Update documentation

.gitignore

@@ -5,4 +5,7 @@
 /site/
 /bin/
 /dist/
-/sing-box
+/sing-box
+/build/
+/*.jar
+/*.aar

Makefile

@@ -71,6 +71,14 @@ test_stdio:
 	go mod tidy && \
 	go test -v -tags "$(TAGS_TEST),force_stdio" .
 
+lib:
+	go run ./cmd/internal/build_libbox
+
+lib_install:
+	go get -v -d
+	go install -v github.com/sagernet/gomobile/cmd/gomobile@v0.0.0-20221130124640-349ebaa752ca
+	go install -v github.com/sagernet/gomobile/cmd/gobind@v0.0.0-20221130124640-349ebaa752ca
+
 clean:
 	rm -rf bin dist sing-box
 	rm -f $(shell go env GOPATH)/sing-box

adapter/router.go

@@ -34,12 +34,15 @@ type Router interface {
 	InterfaceFinder() control.InterfaceFinder
 	DefaultInterface() string
 	AutoDetectInterface() bool
+	AutoDetectInterfaceFunc() control.Func
 	DefaultMark() int
 	NetworkMonitor() tun.NetworkUpdateMonitor
 	InterfaceMonitor() tun.DefaultInterfaceMonitor
 	PackageManager() tun.PackageManager
 	Rules() []Rule
 
+	TimeService
+
 	ClashServer() ClashServer
 	SetClashServer(server ClashServer)
 

adapter/time.go

@@ -0,0 +1,8 @@
+package adapter
+
+import "time"
+
+type TimeService interface {
+	Service
+	TimeFunc() func() time.Time
+}

box.go

@@ -9,6 +9,7 @@ import (
 	"time"
 
 	"github.com/sagernet/sing-box/adapter"
+	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/experimental"
 	"github.com/sagernet/sing-box/inbound"
 	"github.com/sagernet/sing-box/log"
@@ -53,46 +54,52 @@ func New(ctx context.Context, options option.Options) (*Box, error) {
 	var logFactory log.Factory
 	var observableLogFactory log.ObservableFactory
 	var logFile *os.File
+	var logWriter io.Writer
 	if logOptions.Disabled {
 		observableLogFactory = log.NewNOPFactory()
 		logFactory = observableLogFactory
 	} else {
-		var logWriter io.Writer
 		switch logOptions.Output {
-		case "", "stderr":
+		case "":
+			if options.PlatformInterface != nil {
+				logWriter = io.Discard
+			} else {
+				logWriter = os.Stdout
+			}
+		case "stderr":
 			logWriter = os.Stderr
 		case "stdout":
 			logWriter = os.Stdout
 		default:
 			var err error
-			logFile, err = os.OpenFile(logOptions.Output, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0o644)
+			logFile, err = os.OpenFile(C.BasePath(logOptions.Output), os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0o644)
 			if err != nil {
 				return nil, err
 			}
 			logWriter = logFile
 		}
-		logFormatter := log.Formatter{
-			BaseTime:         createdAt,
-			DisableColors:    logOptions.DisableColor || logFile != nil,
-			DisableTimestamp: !logOptions.Timestamp && logFile != nil,
-			FullTimestamp:    logOptions.Timestamp,
-			TimestampFormat:  "-0700 2006-01-02 15:04:05",
-		}
-		if needClashAPI {
-			observableLogFactory = log.NewObservableFactory(logFormatter, logWriter)
-			logFactory = observableLogFactory
-		} else {
-			logFactory = log.NewFactory(logFormatter, logWriter)
-		}
-		if logOptions.Level != "" {
-			logLevel, err := log.ParseLevel(logOptions.Level)
-			if err != nil {
-				return nil, E.Cause(err, "parse log level")
-			}
-			logFactory.SetLevel(logLevel)
-		} else {
-			logFactory.SetLevel(log.LevelTrace)
+	}
+	logFormatter := log.Formatter{
+		BaseTime:         createdAt,
+		DisableColors:    logOptions.DisableColor || logFile != nil,
+		DisableTimestamp: !logOptions.Timestamp && logFile != nil,
+		FullTimestamp:    logOptions.Timestamp,
+		TimestampFormat:  "-0700 2006-01-02 15:04:05",
+	}
+	if needClashAPI {
+		observableLogFactory = log.NewObservableFactory(logFormatter, logWriter, options.PlatformInterface)
+		logFactory = observableLogFactory
+	} else {
+		logFactory = log.NewFactory(logFormatter, logWriter, options.PlatformInterface)
+	}
+	if logOptions.Level != "" {
+		logLevel, err := log.ParseLevel(logOptions.Level)
+		if err != nil {
+			return nil, E.Cause(err, "parse log level")
 		}
+		logFactory.SetLevel(logLevel)
+	} else {
+		logFactory.SetLevel(log.LevelTrace)
 	}
 
 	router, err := route.NewRouter(
@@ -100,7 +107,9 @@ func New(ctx context.Context, options option.Options) (*Box, error) {
 		logFactory,
 		common.PtrValueOrDefault(options.Route),
 		common.PtrValueOrDefault(options.DNS),
+		common.PtrValueOrDefault(options.NTP),
 		options.Inbounds,
+		options.PlatformInterface,
 	)
 	if err != nil {
 		return nil, E.Cause(err, "parse route options")
@@ -120,6 +129,7 @@ func New(ctx context.Context, options option.Options) (*Box, error) {
 			router,
 			logFactory.NewLogger(F.ToString("inbound/", inboundOptions.Type, "[", tag, "]")),
 			inboundOptions,
+			options.PlatformInterface,
 		)
 		if err != nil {
 			return nil, E.Cause(err, "parse inbound[", i, "]")
@@ -255,19 +265,43 @@ func (s *Box) Close() error {
 	default:
 		close(s.done)
 	}
-	for _, in := range s.inbounds {
-		in.Close()
+	var errors error
+	for i, in := range s.inbounds {
+		errors = E.Append(errors, in.Close(), func(err error) error {
+			return E.Cause(err, "close inbound/", in.Type(), "[", i, "]")
+		})
 	}
-	for _, out := range s.outbounds {
-		common.Close(out)
+	for i, out := range s.outbounds {
+		errors = E.Append(errors, common.Close(out), func(err error) error {
+			return E.Cause(err, "close inbound/", out.Type(), "[", i, "]")
+		})
 	}
-	return common.Close(
-		s.router,
-		s.logFactory,
-		s.clashServer,
-		s.v2rayServer,
-		common.PtrOrNil(s.logFile),
-	)
+	if err := common.Close(s.router); err != nil {
+		errors = E.Append(errors, err, func(err error) error {
+			return E.Cause(err, "close router")
+		})
+	}
+	if err := common.Close(s.logFactory); err != nil {
+		errors = E.Append(errors, err, func(err error) error {
+			return E.Cause(err, "close log factory")
+		})
+	}
+	if err := common.Close(s.clashServer); err != nil {
+		errors = E.Append(errors, err, func(err error) error {
+			return E.Cause(err, "close clash api server")
+		})
+	}
+	if err := common.Close(s.v2rayServer); err != nil {
+		errors = E.Append(errors, err, func(err error) error {
+			return E.Cause(err, "close v2ray api server")
+		})
+	}
+	if s.logFile != nil {
+		errors = E.Append(errors, s.logFile.Close(), func(err error) error {
+			return E.Cause(err, "close log file")
+		})
+	}
+	return errors
 }
 
 func (s *Box) Router() adapter.Router {

cmd/internal/build/main.go

@@ -4,11 +4,12 @@ import (
 	"os"
 	"os/exec"
 
+	"github.com/sagernet/sing-box/cmd/internal/build_shared"
 	"github.com/sagernet/sing-box/log"
 )
 
 func main() {
-	findSDK()
+	build_shared.FindSDK()
 
 	command := exec.Command(os.Args[1], os.Args[2:]...)
 	command.Stdout = os.Stdout

cmd/internal/build_libbox/main.go

@@ -0,0 +1,61 @@
+package main
+
+import (
+	"flag"
+	"os"
+	"os/exec"
+	"path/filepath"
+
+	_ "github.com/sagernet/gomobile/asset"
+	"github.com/sagernet/sing-box/cmd/internal/build_shared"
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing/common/rw"
+)
+
+var debugEnabled bool
+
+func init() {
+	flag.BoolVar(&debugEnabled, "debug", false, "enable debug")
+}
+
+func main() {
+	build_shared.FindSDK()
+	build_shared.FindMobile()
+
+	args := []string{
+		"bind",
+		"-v",
+		"-androidapi", "21",
+		"-javapkg=io.nekohasekai",
+		"-libname=box",
+	}
+	if !debugEnabled {
+		args = append(args,
+			"-trimpath", "-ldflags=-s -w -buildid=",
+			"-tags", "with_gvisor,with_quic,with_wireguard,with_utls,with_clash_api,debug",
+		)
+	} else {
+		args = append(args, "-tags", "with_gvisor,with_quic,with_wireguard,with_utls,with_clash_api")
+	}
+
+	args = append(args, "./experimental/libbox")
+
+	command := exec.Command(build_shared.GoBinPath+"/gomobile", args...)
+	command.Stdout = os.Stdout
+	command.Stderr = os.Stderr
+	err := command.Run()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	const name = "libbox.aar"
+	copyPath := filepath.Join("..", "sing-box-for-android", "app", "libs")
+	if rw.FileExists(copyPath) {
+		copyPath, _ = filepath.Abs(copyPath)
+		err = rw.CopyFile(name, filepath.Join(copyPath, name))
+		if err != nil {
+			log.Fatal(err)
+		}
+		log.Info("copied to ", copyPath)
+	}
+}

cmd/internal/build_shared/sdk.go

@@ -1,6 +1,7 @@
-package main
+package build_shared
 
 import (
+	"go/build"
 	"os"
 	"path/filepath"
 	"runtime"
@@ -18,7 +19,7 @@ var (
 	androidNDKPath string
 )
 
-func findSDK() {
+func FindSDK() {
 	searchPath := []string{
 		"$ANDROID_HOME",
 		"$HOME/Android/Sdk",
@@ -79,3 +80,13 @@ func findNDK() bool {
 	}
 	return false
 }
+
+var GoBinPath string
+
+func FindMobile() {
+	goBin := filepath.Join(build.Default.GOPATH, "bin")
+	if !rw.FileExists(goBin + "/" + "gobind") {
+		log.Fatal("missing gomobile installation")
+	}
+	GoBinPath = goBin
+}

common/dialer/default.go

@@ -70,15 +70,7 @@ func NewDefault(router adapter.Router, options option.DialerOptions) *DefaultDia
 		dialer.Control = control.Append(dialer.Control, bindFunc)
 		listener.Control = control.Append(listener.Control, bindFunc)
 	} else if router.AutoDetectInterface() {
-		const useInterfaceName = C.IsLinux
-		bindFunc := control.BindToInterfaceFunc(router.InterfaceFinder(), func(network string, address string) (interfaceName string, interfaceIndex int) {
-			remoteAddr := M.ParseSocksaddr(address).Addr
-			if C.IsLinux {
-				return router.InterfaceMonitor().DefaultInterfaceName(remoteAddr), -1
-			} else {
-				return "", router.InterfaceMonitor().DefaultInterfaceIndex(remoteAddr)
-			}
-		})
+		bindFunc := router.AutoDetectInterfaceFunc()
 		dialer.Control = control.Append(dialer.Control, bindFunc)
 		listener.Control = control.Append(listener.Control, bindFunc)
 	} else if router.DefaultInterface() != "" {

common/tls/client.go

@@ -34,7 +34,7 @@ func NewClient(router adapter.Router, serverAddress string, options option.Outbo
 	} else if options.UTLS != nil && options.UTLS.Enabled {
 		return NewUTLSClient(router, serverAddress, options)
 	} else {
-		return NewSTDClient(serverAddress, options)
+		return NewSTDClient(router, serverAddress, options)
 	}
 }
 

common/tls/config.go

@@ -25,6 +25,10 @@ type Config interface {
 	Clone() Config
 }
 
+type ConfigWithSessionIDGenerator interface {
+	SetSessionIDGenerator(generator func(clientHello []byte, sessionID []byte) error)
+}
+
 type ServerConfig interface {
 	Config
 	adapter.Service

common/tls/ech_client.go

@@ -90,6 +90,7 @@ func NewECHClient(router adapter.Router, serverAddress string, options option.Ou
 	}
 
 	var tlsConfig cftls.Config
+	tlsConfig.Time = router.TimeFunc()
 	if options.DisableSNI {
 		tlsConfig.ServerName = "127.0.0.1"
 	} else {

common/tls/mkcert.go

@@ -11,7 +11,10 @@ import (
 	"time"
 )
 
-func GenerateKeyPair(serverName string) (*tls.Certificate, error) {
+func GenerateKeyPair(timeFunc func() time.Time, serverName string) (*tls.Certificate, error) {
+	if timeFunc == nil {
+		timeFunc = time.Now
+	}
 	key, err := rsa.GenerateKey(rand.Reader, 2048)
 	if err != nil {
 		return nil, err
@@ -22,8 +25,8 @@ func GenerateKeyPair(serverName string) (*tls.Certificate, error) {
 	}
 	template := &x509.Certificate{
 		SerialNumber:          serialNumber,
-		NotBefore:             time.Now().Add(time.Hour * -1),
-		NotAfter:              time.Now().Add(time.Hour),
+		NotBefore:             timeFunc().Add(time.Hour * -1),
+		NotAfter:              timeFunc().Add(time.Hour),
 		KeyUsage:              x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,
 		ExtKeyUsage:           []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
 		BasicConstraintsValid: true,

common/tls/server.go

@@ -5,17 +5,18 @@ import (
 	"crypto/tls"
 	"net"
 
+	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/common/badtls"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 )
 
-func NewServer(ctx context.Context, logger log.Logger, options option.InboundTLSOptions) (ServerConfig, error) {
+func NewServer(ctx context.Context, router adapter.Router, logger log.Logger, options option.InboundTLSOptions) (ServerConfig, error) {
 	if !options.Enabled {
 		return nil, nil
 	}
-	return NewSTDServer(ctx, logger, options)
+	return NewSTDServer(ctx, router, logger, options)
 }
 
 func ServerHandshake(ctx context.Context, conn net.Conn, config ServerConfig) (Conn, error) {

common/tls/std_client.go

@@ -7,6 +7,7 @@ import (
 	"net/netip"
 	"os"
 
+	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/option"
 	E "github.com/sagernet/sing/common/exceptions"
 )
@@ -43,7 +44,7 @@ func (s *STDClientConfig) Clone() Config {
 	return &STDClientConfig{s.config.Clone()}
 }
 
-func NewSTDClient(serverAddress string, options option.OutboundTLSOptions) (Config, error) {
+func NewSTDClient(router adapter.Router, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
 	var serverName string
 	if options.ServerName != "" {
 		serverName = options.ServerName
@@ -57,6 +58,7 @@ func NewSTDClient(serverAddress string, options option.OutboundTLSOptions) (Conf
 	}
 
 	var tlsConfig tls.Config
+	tlsConfig.Time = router.TimeFunc()
 	if options.DisableSNI {
 		tlsConfig.ServerName = "127.0.0.1"
 	} else {

common/tls/std_server.go

@@ -156,7 +156,7 @@ func (c *STDServerConfig) Close() error {
 	return nil
 }
 
-func NewSTDServer(ctx context.Context, logger log.Logger, options option.InboundTLSOptions) (ServerConfig, error) {
+func NewSTDServer(ctx context.Context, router adapter.Router, logger log.Logger, options option.InboundTLSOptions) (ServerConfig, error) {
 	if !options.Enabled {
 		return nil, nil
 	}
@@ -175,6 +175,7 @@ func NewSTDServer(ctx context.Context, logger log.Logger, options option.Inbound
 	} else {
 		tlsConfig = &tls.Config{}
 	}
+	tlsConfig.Time = router.TimeFunc()
 	if options.ServerName != "" {
 		tlsConfig.ServerName = options.ServerName
 	}
@@ -230,7 +231,7 @@ func NewSTDServer(ctx context.Context, logger log.Logger, options option.Inbound
 		}
 		if certificate == nil && key == nil && options.Insecure {
 			tlsConfig.GetCertificate = func(info *tls.ClientHelloInfo) (*tls.Certificate, error) {
-				return GenerateKeyPair(info.ServerName)
+				return GenerateKeyPair(router.TimeFunc(), info.ServerName)
 			}
 		} else {
 			if certificate == nil {

common/tls/utls_client.go

@@ -12,8 +12,7 @@ import (
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/option"
 	E "github.com/sagernet/sing/common/exceptions"
-
-	utls "github.com/refraction-networking/utls"
+	utls "github.com/sagernet/utls"
 )
 
 type UTLSClientConfig struct {
@@ -45,6 +44,10 @@ func (e *UTLSClientConfig) Client(conn net.Conn) Conn {
 	return &utlsConnWrapper{utls.UClient(conn, e.config.Clone(), e.id)}
 }
 
+func (e *UTLSClientConfig) SetSessionIDGenerator(generator func(clientHello []byte, sessionID []byte) error) {
+	e.config.SessionIDGenerator = generator
+}
+
 type utlsConnWrapper struct {
 	*utls.UConn
 }
@@ -88,6 +91,7 @@ func NewUTLSClient(router adapter.Router, serverAddress string, options option.O
 	}
 
 	var tlsConfig utls.Config
+	tlsConfig.Time = router.TimeFunc()
 	if options.DisableSNI {
 		tlsConfig.ServerName = "127.0.0.1"
 	} else {

constant/path.go

@@ -3,13 +3,28 @@ package constant
 import (
 	"os"
 	"path/filepath"
+	"strings"
 
 	"github.com/sagernet/sing/common/rw"
 )
 
 const dirName = "sing-box"
 
-var resourcePaths []string
+var (
+	basePath      string
+	resourcePaths []string
+)
+
+func BasePath(name string) string {
+	if basePath == "" || strings.HasPrefix(name, "/") {
+		return name
+	}
+	return filepath.Join(basePath, name)
+}
+
+func SetBasePath(path string) {
+	basePath = path
+}
 
 func FindPath(name string) (string, bool) {
 	name = os.ExpandEnv(name)

constant/version.go

@@ -1,3 +1,3 @@
 package constant
 
-var Version = "1.2-beta3"
+var Version = "1.2-beta4"

docs/changelog.md

@@ -1,3 +1,9 @@
+#### 1.2-beta4
+
+* Add [NTP service](/configuration/ntp)
+* Add Add multiple server names and multi-user support for shadowtls
+* Add strict mode support for shadowtls v3
+
 #### 1.2-beta3
 
 * Update QUIC v2 version number and initial salt

docs/configuration/inbound/shadowtls.md

@@ -9,11 +9,25 @@
 
   "version": 3,
   "password": "fuck me till the daylight",
+  "users": [
+    {
+      "name": "sekai",
+      "password": "8JCsPssfgS8tiRwiMlhARg=="
+    }
+  ],
   "handshake": {
     "server": "google.com",
     "server_port": 443,
     
     ... // Dial Fields
+  },
+  "handshake_for_server_name": {
+    "example.com": {
+      "server": "example.com",
+      "server_port": 443,
+
+      ... // Dial Fields
+    }
   }
 }
 ```
@@ -36,12 +50,25 @@ ShadowTLS protocol version.
 
 #### password
 
-Set password.
+ShadowTLS password.
 
-Only available in the ShadowTLS v2/v3 protocol.
+Only available in the ShadowTLS protocol 2.
+
+
+#### users
+
+ShadowTLS users.
+
+Only available in the ShadowTLS protocol 3.
 
 #### handshake
 
 ==Required==
 
-Handshake server address and [Dial options](/configuration/shared/dial).
+Handshake server address and [Dial options](/configuration/shared/dial).
+
+#### handshake
+
+Handshake server address and [Dial options](/configuration/shared/dial) for specific server name.
+
+Only available in the ShadowTLS protocol 2/3.

docs/configuration/inbound/shadowtls.zh.md

@@ -9,11 +9,25 @@
 
   "version": 3,
   "password": "fuck me till the daylight",
+  "users": [
+    {
+      "name": "sekai",
+      "password": "8JCsPssfgS8tiRwiMlhARg=="
+    }
+  ],
   "handshake": {
     "server": "google.com",
     "server_port": 443,
 
     ... // 拨号字段
+  },
+  "handshake_for_server_name": {
+    "example.com": {
+      "server": "example.com",
+      "server_port": 443,
+      
+      ... // 拨号字段
+    }
   }
 }
 ```
@@ -36,12 +50,26 @@ ShadowTLS 协议版本。
 
 #### password
 
-设置密码。
+ShadowTLS 密码。
 
-仅在 ShadowTLS v2/v3 协议中可用。
+仅在 ShadowTLS 协议版本 2 中可用。
+
+#### users
+
+ShadowTLS 用户。
+
+仅在 ShadowTLS 协议版本 3 中可用。
 
 #### handshake
 
 ==必填==
 
 握手服务器地址和 [拨号参数](/zh/configuration/shared/dial/)。
+
+#### handshake
+
+==必填==
+
+对于特定服务器名称的握手服务器地址和 [拨号参数](/zh/configuration/shared/dial/)。
+
+仅在 ShadowTLS 协议版本 2/3 中可用。

docs/configuration/index.md

@@ -8,6 +8,7 @@ sing-box uses JSON for configuration files.
 {
   "log": {},
   "dns": {},
+  "ntp": {},
   "inbounds": [],
   "outbounds": [],
   "route": {},
@@ -21,6 +22,7 @@ sing-box uses JSON for configuration files.
 |----------------|--------------------------------|
 | `log`          | [Log](./log)                   |
 | `dns`          | [DNS](./dns)                   |
+| `ntp`          | [NTP](./ntp)                   |
 | `inbounds`     | [Inbound](./inbound)           |
 | `outbounds`    | [Outbound](./outbound)         |
 | `route`        | [Route](./route)               |

docs/configuration/ntp/index.md

@@ -0,0 +1,50 @@
+# NTP
+
+Built-in NTP client service.
+
+If enabled, it will provide time for protocols like TLS/Shadowsocks/VMess, which is useful for environments where time
+synchronization is not possible.
+
+### Structure
+
+```json
+{
+  "ntp": {
+    "enabled": false,
+    "server": "ntp.apple.com",
+    "server_port": 123,
+    "interval": "30m",
+    
+    ... // Dial Fields
+  }
+}
+
+```
+
+### Fields
+
+#### enabled
+
+Enable NTP service.
+
+#### server
+
+==Required==
+
+NTP server address.
+
+#### server_port
+
+NTP server port.
+
+123 is used by default.
+
+#### interval
+
+Time synchronization interval.
+
+30 minutes is used by default.
+
+### Dial Fields
+
+See [Dial Fields](/configuration/shared/dial) for details.

docs/configuration/ntp/index.zh.md

@@ -0,0 +1,49 @@
+# NTP
+
+内建的 NTP 客户端服务。
+
+如果启用，它将为像 TLS/Shadowsocks/VMess 这样的协议提供时间，这对于无法进行时间同步的环境很有用。
+
+### 结构
+
+```json
+{
+  "ntp": {
+    "enabled": false,
+    "server": "ntp.apple.com",
+    "server_port": 123,
+    "interval": "30m",
+    
+    ... // 拨号字段
+  }
+}
+
+```
+
+### 字段
+
+#### enabled
+
+启用 NTP 服务。
+
+#### server
+
+==必填==
+
+NTP 服务器地址。
+
+#### server_port
+
+NTP 服务器端口。
+
+默认使用 123。
+
+#### interval
+
+时间同步间隔。
+
+默认使用 30 分钟。
+
+### 拨号字段
+
+参阅 [拨号字段](/zh/configuration/shared/dial/)。

experimental/clashapi/server.go

@@ -42,7 +42,6 @@ type Server struct {
 	httpServer     *http.Server
 	trafficManager *trafficontrol.Manager
 	urlTestHistory *urltest.HistoryStorage
-	tcpListener    net.Listener
 	mode           string
 	storeSelected  bool
 	cacheFile      adapter.ClashCacheFile
@@ -71,6 +70,11 @@ func NewServer(router adapter.Router, logFactory log.ObservableFactory, options
 		if cachePath == "" {
 			cachePath = "cache.db"
 		}
+		if foundPath, loaded := C.FindPath(cachePath); loaded {
+			cachePath = foundPath
+		} else {
+			cachePath = C.BasePath(cachePath)
+		}
 		cacheFile, err := cachefile.Open(cachePath)
 		if err != nil {
 			return nil, E.Cause(err, "open cache file")
@@ -103,7 +107,7 @@ func NewServer(router adapter.Router, logFactory log.ObservableFactory, options
 	})
 	if options.ExternalUI != "" {
 		chiRouter.Group(func(r chi.Router) {
-			fs := http.StripPrefix("/ui", http.FileServer(http.Dir(os.ExpandEnv(options.ExternalUI))))
+			fs := http.StripPrefix("/ui", http.FileServer(http.Dir(C.BasePath(os.ExpandEnv(options.ExternalUI)))))
 			r.Get("/ui", http.RedirectHandler("/ui/", http.StatusTemporaryRedirect).ServeHTTP)
 			r.Get("/ui/*", func(w http.ResponseWriter, r *http.Request) {
 				fs.ServeHTTP(w, r)
@@ -119,7 +123,6 @@ func (s *Server) Start() error {
 		return E.Cause(err, "external controller listen error")
 	}
 	s.logger.Info("restful api listening at ", listener.Addr())
-	s.tcpListener = listener
 	go func() {
 		err = s.httpServer.Serve(listener)
 		if err != nil && !errors.Is(err, http.ErrServerClosed) {
@@ -132,7 +135,6 @@ func (s *Server) Start() error {
 func (s *Server) Close() error {
 	return common.Close(
 		common.PtrOrNil(s.httpServer),
-		s.tcpListener,
 		s.trafficManager,
 		s.cacheFile,
 	)

experimental/libbox/config.go

@@ -0,0 +1,15 @@
+package libbox
+
+import (
+	"github.com/sagernet/sing-box/option"
+	E "github.com/sagernet/sing/common/exceptions"
+)
+
+func parseConfig(configContent string) (option.Options, error) {
+	var options option.Options
+	err := options.UnmarshalJSON([]byte(configContent))
+	if err != nil {
+		return option.Options{}, E.Cause(err, "decode config")
+	}
+	return options, nil
+}

experimental/libbox/internal/procfs/procfs.go

@@ -0,0 +1,148 @@
+package procfs
+
+import (
+	"bufio"
+	"encoding/binary"
+	"encoding/hex"
+	"fmt"
+	"net"
+	"net/netip"
+	"os"
+	"strconv"
+	"strings"
+	"unsafe"
+
+	N "github.com/sagernet/sing/common/network"
+)
+
+var (
+	netIndexOfLocal = -1
+	netIndexOfUid   = -1
+	nativeEndian    binary.ByteOrder
+)
+
+func init() {
+	var x uint32 = 0x01020304
+	if *(*byte)(unsafe.Pointer(&x)) == 0x01 {
+		nativeEndian = binary.BigEndian
+	} else {
+		nativeEndian = binary.LittleEndian
+	}
+}
+
+func ResolveSocketByProcSearch(network string, source, _ netip.AddrPort) int32 {
+	if netIndexOfLocal < 0 || netIndexOfUid < 0 {
+		return -1
+	}
+
+	path := "/proc/net/"
+
+	if network == N.NetworkTCP {
+		path += "tcp"
+	} else {
+		path += "udp"
+	}
+
+	if source.Addr().Is6() {
+		path += "6"
+	}
+
+	sIP := source.Addr().AsSlice()
+	if len(sIP) == 0 {
+		return -1
+	}
+
+	var bytes [2]byte
+	binary.BigEndian.PutUint16(bytes[:], source.Port())
+	local := fmt.Sprintf("%s:%s", hex.EncodeToString(nativeEndianIP(sIP)), hex.EncodeToString(bytes[:]))
+
+	file, err := os.Open(path)
+	if err != nil {
+		return -1
+	}
+
+	defer file.Close()
+
+	reader := bufio.NewReader(file)
+
+	for {
+		row, _, err := reader.ReadLine()
+		if err != nil {
+			return -1
+		}
+
+		fields := strings.Fields(string(row))
+
+		if len(fields) <= netIndexOfLocal || len(fields) <= netIndexOfUid {
+			continue
+		}
+
+		if strings.EqualFold(local, fields[netIndexOfLocal]) {
+			uid, err := strconv.Atoi(fields[netIndexOfUid])
+			if err != nil {
+				return -1
+			}
+
+			return int32(uid)
+		}
+	}
+}
+
+func nativeEndianIP(ip net.IP) []byte {
+	result := make([]byte, len(ip))
+
+	for i := 0; i < len(ip); i += 4 {
+		value := binary.BigEndian.Uint32(ip[i:])
+
+		nativeEndian.PutUint32(result[i:], value)
+	}
+
+	return result
+}
+
+func init() {
+	file, err := os.Open("/proc/net/tcp")
+	if err != nil {
+		return
+	}
+
+	defer file.Close()
+
+	reader := bufio.NewReader(file)
+
+	header, _, err := reader.ReadLine()
+	if err != nil {
+		return
+	}
+
+	columns := strings.Fields(string(header))
+
+	var txQueue, rxQueue, tr, tmWhen bool
+
+	for idx, col := range columns {
+		offset := 0
+
+		if txQueue && rxQueue {
+			offset--
+		}
+
+		if tr && tmWhen {
+			offset--
+		}
+
+		switch col {
+		case "tx_queue":
+			txQueue = true
+		case "rx_queue":
+			rxQueue = true
+		case "tr":
+			tr = true
+		case "tm->when":
+			tmWhen = true
+		case "local_address":
+			netIndexOfLocal = idx + offset
+		case "uid":
+			netIndexOfUid = idx + offset
+		}
+	}
+}

experimental/libbox/iterator.go

@@ -0,0 +1,31 @@
+package libbox
+
+import "github.com/sagernet/sing/common"
+
+type StringIterator interface {
+	Next() string
+	HasNext() bool
+}
+
+var _ StringIterator = (*iterator[string])(nil)
+
+type iterator[T any] struct {
+	values []T
+}
+
+func newIterator[T any](values []T) *iterator[T] {
+	return &iterator[T]{values}
+}
+
+func (i *iterator[T]) Next() T {
+	if len(i.values) == 0 {
+		return common.DefaultValue[T]()
+	}
+	nextValue := i.values[0]
+	i.values = i.values[1:]
+	return nextValue
+}
+
+func (i *iterator[T]) HasNext() bool {
+	return len(i.values) > 0
+}

experimental/libbox/platform.go

@@ -0,0 +1,16 @@
+package libbox
+
+type PlatformInterface interface {
+	AutoDetectInterfaceControl(fd int32) error
+	OpenTun(options TunOptions) (TunInterface, error)
+	WriteLog(message string)
+	UseProcFS() bool
+	FindConnectionOwner(ipProtocol int32, sourceAddress string, sourcePort int32, destinationAddress string, destinationPort int32) (int32, error)
+	PackageNameByUid(uid int32) (string, error)
+	UIDByPackageName(packageName string) (int32, error)
+}
+
+type TunInterface interface {
+	FileDescriptor() int32
+	Close() error
+}

experimental/libbox/platform/interface.go

@@ -0,0 +1,16 @@
+package platform
+
+import (
+	"io"
+
+	"github.com/sagernet/sing-box/common/process"
+	"github.com/sagernet/sing-tun"
+	"github.com/sagernet/sing/common/control"
+)
+
+type Interface interface {
+	AutoDetectInterfaceControl() control.Func
+	OpenTun(options tun.Options) (tun.Tun, error)
+	process.Searcher
+	io.Writer
+}

experimental/libbox/pprof.go

@@ -0,0 +1,35 @@
+//go:build debug
+
+package libbox
+
+import (
+	"net"
+	"net/http"
+	_ "net/http/pprof"
+	"strconv"
+)
+
+type PProfServer struct {
+	server *http.Server
+}
+
+func NewPProfServer(port int) *PProfServer {
+	return &PProfServer{
+		&http.Server{
+			Addr: ":" + strconv.Itoa(port),
+		},
+	}
+}
+
+func (s *PProfServer) Start() error {
+	ln, err := net.Listen("tcp", s.server.Addr)
+	if err != nil {
+		return err
+	}
+	go s.server.Serve(ln)
+	return nil
+}
+
+func (s *PProfServer) Close() error {
+	return s.server.Close()
+}

experimental/libbox/pprof_stub.go

@@ -0,0 +1,21 @@
+//go:build !debug
+
+package libbox
+
+import (
+	"os"
+)
+
+type PProfServer struct{}
+
+func NewPProfServer(port int) *PProfServer {
+	return &PProfServer{}
+}
+
+func (s *PProfServer) Start() error {
+	return os.ErrInvalid
+}
+
+func (s *PProfServer) Close() error {
+	return os.ErrInvalid
+}

experimental/libbox/service.go

@@ -0,0 +1,120 @@
+package libbox
+
+import (
+	"context"
+	"net/netip"
+	"os"
+	"syscall"
+
+	"github.com/sagernet/sing-box"
+	"github.com/sagernet/sing-box/common/process"
+	"github.com/sagernet/sing-box/experimental/libbox/internal/procfs"
+	"github.com/sagernet/sing-box/experimental/libbox/platform"
+	"github.com/sagernet/sing-tun"
+	"github.com/sagernet/sing/common/control"
+	E "github.com/sagernet/sing/common/exceptions"
+	N "github.com/sagernet/sing/common/network"
+)
+
+type BoxService struct {
+	ctx      context.Context
+	cancel   context.CancelFunc
+	instance *box.Box
+}
+
+func NewService(configContent string, platformInterface PlatformInterface) (*BoxService, error) {
+	options, err := parseConfig(configContent)
+	if err != nil {
+		return nil, err
+	}
+	options.PlatformInterface = &platformInterfaceWrapper{platformInterface, platformInterface.UseProcFS()}
+	ctx, cancel := context.WithCancel(context.Background())
+	instance, err := box.New(ctx, options)
+	if err != nil {
+		cancel()
+		return nil, E.Cause(err, "create service")
+	}
+	return &BoxService{
+		ctx:      ctx,
+		cancel:   cancel,
+		instance: instance,
+	}, nil
+}
+
+func (s *BoxService) Start() error {
+	return s.instance.Start()
+}
+
+func (s *BoxService) Close() error {
+	s.cancel()
+	return s.instance.Close()
+}
+
+var _ platform.Interface = (*platformInterfaceWrapper)(nil)
+
+type platformInterfaceWrapper struct {
+	iif       PlatformInterface
+	useProcFS bool
+}
+
+func (w *platformInterfaceWrapper) AutoDetectInterfaceControl() control.Func {
+	return func(network, address string, conn syscall.RawConn) error {
+		return control.Raw(conn, func(fd uintptr) error {
+			return w.iif.AutoDetectInterfaceControl(int32(fd))
+		})
+	}
+}
+
+func (w *platformInterfaceWrapper) OpenTun(options tun.Options) (tun.Tun, error) {
+	if len(options.IncludeUID) > 0 || len(options.ExcludeUID) > 0 {
+		return nil, E.New("android: unsupported uid options")
+	}
+	if len(options.IncludeAndroidUser) > 0 {
+		return nil, E.New("android: unsupported android_user option")
+	}
+
+	optionsWrapper := tunOptions(options)
+	tunInterface, err := w.iif.OpenTun(&optionsWrapper)
+	if err != nil {
+		return nil, err
+	}
+	tunFd := tunInterface.FileDescriptor()
+	return &nativeTun{
+		tunFd:   int(tunFd),
+		tunFile: os.NewFile(uintptr(tunFd), "tun"),
+		tunMTU:  options.MTU,
+		closer:  tunInterface,
+	}, nil
+}
+
+func (w *platformInterfaceWrapper) Write(p []byte) (n int, err error) {
+	w.iif.WriteLog(string(p))
+	return len(p), nil
+}
+
+func (w *platformInterfaceWrapper) FindProcessInfo(ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*process.Info, error) {
+	var uid int32
+	if w.useProcFS {
+		uid = procfs.ResolveSocketByProcSearch(network, source, destination)
+		if uid == -1 {
+			return nil, E.New("procfs: not found")
+		}
+	} else {
+		var ipProtocol int32
+		switch N.NetworkName(network) {
+		case N.NetworkTCP:
+			ipProtocol = syscall.IPPROTO_TCP
+		case N.NetworkUDP:
+			ipProtocol = syscall.IPPROTO_UDP
+		default:
+			return nil, E.New("unknown network: ", network)
+		}
+		var err error
+		uid, err = w.iif.FindConnectionOwner(ipProtocol, source.Addr().String(), int32(source.Port()), destination.Addr().String(), int32(destination.Port()))
+		if err != nil {
+			return nil, err
+		}
+	}
+	packageName, _ := w.iif.PackageNameByUid(uid)
+	return &process.Info{UserId: uid, PackageName: packageName}, nil
+}

experimental/libbox/setup.go

@@ -0,0 +1,7 @@
+package libbox
+
+import C "github.com/sagernet/sing-box/constant"
+
+func SetBasePath(path string) {
+	C.SetBasePath(path)
+}

experimental/libbox/tun.go

@@ -0,0 +1,109 @@
+package libbox
+
+import (
+	"io"
+	"net/netip"
+	"os"
+
+	"github.com/sagernet/sing-tun"
+	"github.com/sagernet/sing/common"
+	E "github.com/sagernet/sing/common/exceptions"
+)
+
+type TunOptions interface {
+	GetInet4Address() RoutePrefixIterator
+	GetInet6Address() RoutePrefixIterator
+	GetDNSServerAddress() (string, error)
+	GetMTU() int32
+	GetAutoRoute() bool
+	GetStrictRoute() bool
+	GetInet4RouteAddress() RoutePrefixIterator
+	GetInet6RouteAddress() RoutePrefixIterator
+	GetIncludePackage() StringIterator
+	GetExcludePackage() StringIterator
+}
+
+type RoutePrefix struct {
+	Address string
+	Prefix  int32
+}
+
+type RoutePrefixIterator interface {
+	Next() *RoutePrefix
+	HasNext() bool
+}
+
+func mapRoutePrefix(prefixes []netip.Prefix) RoutePrefixIterator {
+	return newIterator(common.Map(prefixes, func(prefix netip.Prefix) *RoutePrefix {
+		return &RoutePrefix{
+			Address: prefix.Addr().String(),
+			Prefix:  int32(prefix.Bits()),
+		}
+	}))
+}
+
+var _ TunOptions = (*tunOptions)(nil)
+
+type tunOptions tun.Options
+
+func (o *tunOptions) GetInet4Address() RoutePrefixIterator {
+	return mapRoutePrefix(o.Inet4Address)
+}
+
+func (o *tunOptions) GetInet6Address() RoutePrefixIterator {
+	return mapRoutePrefix(o.Inet6Address)
+}
+
+func (o *tunOptions) GetDNSServerAddress() (string, error) {
+	if len(o.Inet4Address) == 0 || o.Inet4Address[0].Bits() == 32 {
+		return "", E.New("need one more IPv4 address for DNS hijacking")
+	}
+	return o.Inet4Address[0].Addr().Next().String(), nil
+}
+
+func (o *tunOptions) GetMTU() int32 {
+	return int32(o.MTU)
+}
+
+func (o *tunOptions) GetAutoRoute() bool {
+	return o.AutoRoute
+}
+
+func (o *tunOptions) GetStrictRoute() bool {
+	return o.StrictRoute
+}
+
+func (o *tunOptions) GetInet4RouteAddress() RoutePrefixIterator {
+	return mapRoutePrefix(o.Inet4RouteAddress)
+}
+
+func (o *tunOptions) GetInet6RouteAddress() RoutePrefixIterator {
+	return mapRoutePrefix(o.Inet6RouteAddress)
+}
+
+func (o *tunOptions) GetIncludePackage() StringIterator {
+	return newIterator(o.IncludePackage)
+}
+
+func (o *tunOptions) GetExcludePackage() StringIterator {
+	return newIterator(o.ExcludePackage)
+}
+
+type nativeTun struct {
+	tunFd   int
+	tunFile *os.File
+	tunMTU  uint32
+	closer  io.Closer
+}
+
+func (t *nativeTun) Read(p []byte) (n int, err error) {
+	return t.tunFile.Read(p)
+}
+
+func (t *nativeTun) Write(p []byte) (n int, err error) {
+	return t.tunFile.Write(p)
+}
+
+func (t *nativeTun) Close() error {
+	return t.closer.Close()
+}

experimental/libbox/tun_gvisor.go

@@ -0,0 +1,19 @@
+//go:build with_gvisor && linux
+
+package libbox
+
+import (
+	"github.com/sagernet/sing-tun"
+
+	"gvisor.dev/gvisor/pkg/tcpip/link/fdbased"
+	"gvisor.dev/gvisor/pkg/tcpip/stack"
+)
+
+var _ tun.GVisorTun = (*nativeTun)(nil)
+
+func (t *nativeTun) NewEndpoint() (stack.LinkEndpoint, error) {
+	return fdbased.New(&fdbased.Options{
+		FDs: []int{t.tunFd},
+		MTU: t.tunMTU,
+	})
+}

go.mod

@@ -14,22 +14,24 @@ require (
 	github.com/go-chi/render v1.0.2
 	github.com/gofrs/uuid v4.4.0+incompatible
 	github.com/hashicorp/yamux v0.1.1
-	github.com/insomniacslk/dhcp v0.0.0-20221215072855-de60144f33f8
+	github.com/insomniacslk/dhcp v0.0.0-20230220010740-598984875576
 	github.com/logrusorgru/aurora v2.0.3+incompatible
 	github.com/mholt/acmez v1.1.0
 	github.com/miekg/dns v1.1.50
 	github.com/oschwald/maxminddb-golang v1.10.0
 	github.com/pires/go-proxyproto v0.6.2
-	github.com/refraction-networking/utls v1.2.2
 	github.com/sagernet/cloudflare-tls v0.0.0-20221031050923-d70792f4c3a0
+	github.com/sagernet/gomobile v0.0.0-20221130124640-349ebaa752ca
 	github.com/sagernet/quic-go v0.0.0-20230202071646-a8c8afb18b32
-	github.com/sagernet/sing v0.1.7-0.20230209132010-5f1ef3441c13
-	github.com/sagernet/sing-dns v0.1.2-0.20230209132355-3c2e2957b455
-	github.com/sagernet/sing-shadowsocks v0.1.1-0.20230202035033-e3123545f2f7
+	github.com/sagernet/sing v0.1.8-0.20230221060643-3401d210384b
+	github.com/sagernet/sing-dns v0.1.4
+	github.com/sagernet/sing-shadowsocks v0.1.2-0.20230221080503-769c01d6bba9
+	github.com/sagernet/sing-shadowtls v0.0.0-20230221123345-78e50cd7b587
 	github.com/sagernet/sing-tun v0.1.1
-	github.com/sagernet/sing-vmess v0.1.1-0.20230212211128-cb4e47dd0acb
+	github.com/sagernet/sing-vmess v0.1.2
 	github.com/sagernet/smux v0.0.0-20220831015742-e0f1988e3195
 	github.com/sagernet/tfo-go v0.0.0-20230207095944-549363a7327d
+	github.com/sagernet/utls v0.0.0-20230220130002-c08891932056
 	github.com/sagernet/websocket v0.0.0-20220913015213-615516348b4e
 	github.com/sagernet/wireguard-go v0.0.0-20221116151939-c99467f53f2c
 	github.com/spf13/cobra v1.6.1
@@ -47,11 +49,9 @@ require (
 	gvisor.dev/gvisor v0.0.0-20220901235040-6ca97ef2ce1c
 )
 
-//replace github.com/sagernet/sing => ../sing
-
 require (
 	github.com/ajg/form v1.5.1 // indirect
-	github.com/andybalholm/brotli v1.0.4 // indirect
+	github.com/andybalholm/brotli v1.0.5 // indirect
 	github.com/cloudflare/circl v1.2.1-0.20221019164342-6ab4dfed8f3c // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0 // indirect
@@ -66,6 +66,7 @@ require (
 	github.com/libdns/libdns v0.2.1 // indirect
 	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
 	github.com/onsi/ginkgo/v2 v2.2.0 // indirect
+	github.com/pierrec/lz4/v4 v4.1.14 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/quic-go/qpack v0.4.0 // indirect
 	github.com/quic-go/qtls-go1-18 v0.2.0 // indirect
@@ -74,7 +75,7 @@ require (
 	github.com/sagernet/go-tun2socks v1.16.12-0.20220818015926-16cb67876a61 // indirect
 	github.com/sagernet/netlink v0.0.0-20220905062125-8043b4a9aa97 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
-	github.com/u-root/uio v0.0.0-20221213070652-c3537552635f // indirect
+	github.com/u-root/uio v0.0.0-20230215032506-9aa6f7e2d72c // indirect
 	github.com/vishvananda/netns v0.0.0-20211101163701-50045581ed74 // indirect
 	go.uber.org/multierr v1.6.0 // indirect
 	golang.org/x/mod v0.6.0 // indirect

go.sum

@@ -4,8 +4,8 @@ github.com/Dreamacro/clash v1.13.0 h1:gF0E0TluE1LCmuhhg0/bjqABYDmSnXkUjXjRhZxyrm
 github.com/Dreamacro/clash v1.13.0/go.mod h1:hf0RkWPsQ0e8oS8WVJBIRocY/1ILYzQQg9zeMwd8LsM=
 github.com/ajg/form v1.5.1 h1:t9c7v8JUKu/XxOGBU0yjNpaMloxGEJhUkqFRq0ibGeU=
 github.com/ajg/form v1.5.1/go.mod h1:uL1WgH+h2mgNtvBq0339dVnzXdBETtL2LeUXaIv25UY=
-github.com/andybalholm/brotli v1.0.4 h1:V7DdXeJtZscaqfNuAdSRuRFzuiKlHSC/Zh3zl9qY3JY=
-github.com/andybalholm/brotli v1.0.4/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig=
+github.com/andybalholm/brotli v1.0.5 h1:8uQZIdzKmjc/iuPu7O2ioW48L81FgatrcpfFmiq/cCs=
+github.com/andybalholm/brotli v1.0.5/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig=
 github.com/benbjohnson/clock v1.1.0 h1:Q92kusRqC1XV2MjkWETPvjJVqKetz1OzxZB7mHJLju8=
 github.com/caddyserver/certmagic v0.17.2 h1:o30seC1T/dBqBCNNGNHWwj2i5/I/FMjBbTAhjADP3nE=
 github.com/caddyserver/certmagic v0.17.2/go.mod h1:ouWUuC490GOLJzkyN35eXfV8bSbwMwSf4bdhkIxtdQE=
@@ -59,8 +59,8 @@ github.com/hugelgupf/socketpair v0.0.0-20190730060125-05d35a94e714/go.mod h1:2Go
 github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
 github.com/inconshreveable/mousetrap v1.0.1 h1:U3uMjPSQEBMNp1lFxmllqCPM6P5u/Xq7Pgzkat/bFNc=
 github.com/inconshreveable/mousetrap v1.0.1/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
-github.com/insomniacslk/dhcp v0.0.0-20221215072855-de60144f33f8 h1:Z72DOke2yOK0Ms4Z2LK1E1OrRJXOxSj5DllTz2FYTRg=
-github.com/insomniacslk/dhcp v0.0.0-20221215072855-de60144f33f8/go.mod h1:m5WMe03WCvWcXjRnhvaAbAAXdCnu20J5P+mmH44ZzpE=
+github.com/insomniacslk/dhcp v0.0.0-20230220010740-598984875576 h1:ehee0+xI4xtJTRJhN+PVA2GzCLB6KRgHRoZMg2lHwJU=
+github.com/insomniacslk/dhcp v0.0.0-20230220010740-598984875576/go.mod h1:yGKD3yZIGAjEZXiIjVQ0SQ09Y/RzETOoqEOi6nXqX0Y=
 github.com/josharian/native v1.0.1-0.20221213033349-c1e37c09b531/go.mod h1:7X/raswPFr05uY3HiLlYeyQntB6OO7E/d2Cu7qoaN2w=
 github.com/josharian/native v1.1.0 h1:uuaP0hAbW7Y4l0ZRQ6C9zfb7Mg1mbFKry/xzDAfmtLA=
 github.com/josharian/native v1.1.0/go.mod h1:7X/raswPFr05uY3HiLlYeyQntB6OO7E/d2Cu7qoaN2w=
@@ -99,6 +99,8 @@ github.com/onsi/ginkgo/v2 v2.2.0/go.mod h1:MEH45j8TBi6u9BMogfbp0stKC5cdGjumZj5Y7
 github.com/onsi/gomega v1.20.1 h1:PA/3qinGoukvymdIDV8pii6tiZgC8kbmJO6Z5+b002Q=
 github.com/oschwald/maxminddb-golang v1.10.0 h1:Xp1u0ZhqkSuopaKmk1WwHtjF0H9Hd9181uj2MQ5Vndg=
 github.com/oschwald/maxminddb-golang v1.10.0/go.mod h1:Y2ELenReaLAZ0b400URyGwvYxHV1dLIxBuyOsyYjHK0=
+github.com/pierrec/lz4/v4 v4.1.14 h1:+fL8AQEZtz/ijeNnpduH0bROTu0O3NZAlPjQxGn8LwE=
+github.com/pierrec/lz4/v4 v4.1.14/go.mod h1:gZWDp/Ze/IJXGXf23ltt2EXimqmTUXEy0GFuRQyBid4=
 github.com/pires/go-proxyproto v0.6.2 h1:KAZ7UteSOt6urjme6ZldyFm4wDe/z0ZUP0Yv0Dos0d8=
 github.com/pires/go-proxyproto v0.6.2/go.mod h1:Odh9VFOZJCf9G8cLW5o435Xf1J95Jw9Gw5rnCjcwzAY=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
@@ -112,33 +114,37 @@ github.com/quic-go/qtls-go1-19 v0.2.0 h1:Cvn2WdhyViFUHoOqK52i51k4nDX8EwIh5VJiVM4
 github.com/quic-go/qtls-go1-19 v0.2.0/go.mod h1:ySOI96ew8lnoKPtSqx2BlI5wCpUVPT05RMAlajtnyOI=
 github.com/quic-go/qtls-go1-20 v0.1.0 h1:d1PK3ErFy9t7zxKsG3NXBJXZjp/kMLoIb3y/kV54oAI=
 github.com/quic-go/qtls-go1-20 v0.1.0/go.mod h1:JKtK6mjbAVcUTN/9jZpvLbGxvdWIKS8uT7EiStoU1SM=
-github.com/refraction-networking/utls v1.2.2 h1:uBE6V173CwG8MQrSBpNZHAix1fxOvuLKYyjFAu3uqo0=
-github.com/refraction-networking/utls v1.2.2/go.mod h1:L1goe44KvhnTfctUffM2isnJpSjPlYShrhXDeZaoYKw=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/sagernet/cloudflare-tls v0.0.0-20221031050923-d70792f4c3a0 h1:KyhtFFt1Jtp5vW2ohNvstvQffTOQ/s5vENuGXzdA+TM=
 github.com/sagernet/cloudflare-tls v0.0.0-20221031050923-d70792f4c3a0/go.mod h1:D4SFEOkJK+4W1v86ZhX0jPM0rAL498fyQAChqMtes/I=
 github.com/sagernet/go-tun2socks v1.16.12-0.20220818015926-16cb67876a61 h1:5+m7c6AkmAylhauulqN/c5dnh8/KssrE9c93TQrXldA=
 github.com/sagernet/go-tun2socks v1.16.12-0.20220818015926-16cb67876a61/go.mod h1:QUQ4RRHD6hGGHdFMEtR8T2P6GS6R3D/CXKdaYHKKXms=
+github.com/sagernet/gomobile v0.0.0-20221130124640-349ebaa752ca h1:w56+kf8BeqLqllrRJ1tdwKc3sCdWOn/DuNHpY9fAiqs=
+github.com/sagernet/gomobile v0.0.0-20221130124640-349ebaa752ca/go.mod h1:5YE39YkJkCcMsfq1jMKkjsrM2GfBoF9JVWnvU89hmvU=
 github.com/sagernet/netlink v0.0.0-20220905062125-8043b4a9aa97 h1:iL5gZI3uFp0X6EslacyapiRz7LLSJyr4RajF/BhMVyE=
 github.com/sagernet/netlink v0.0.0-20220905062125-8043b4a9aa97/go.mod h1:xLnfdiJbSp8rNqYEdIW/6eDO4mVoogml14Bh2hSiFpM=
 github.com/sagernet/quic-go v0.0.0-20230202071646-a8c8afb18b32 h1:tztuJB+giOWNRKQEBVY2oI3PsheTooMdh+/yxemYQYY=
 github.com/sagernet/quic-go v0.0.0-20230202071646-a8c8afb18b32/go.mod h1:QMCkxXAC3CvBgDZVIJp43NWTuwGBScCzMLVLynjERL8=
 github.com/sagernet/sing v0.0.0-20220812082120-05f9836bff8f/go.mod h1:QVsS5L/ZA2Q5UhQwLrn0Trw+msNd/NPGEhBKR/ioWiY=
 github.com/sagernet/sing v0.0.0-20220817130738-ce854cda8522/go.mod h1:QVsS5L/ZA2Q5UhQwLrn0Trw+msNd/NPGEhBKR/ioWiY=
-github.com/sagernet/sing v0.1.7-0.20230209132010-5f1ef3441c13 h1:S/+YvJCEChwnckGhzqSrE/Q2m6aVWhkt1I4Pv2yCMVw=
-github.com/sagernet/sing v0.1.7-0.20230209132010-5f1ef3441c13/go.mod h1:jt1w2u7lJQFFSGLiRrRIs5YWmx4kAPfWuOejuDW9qMk=
-github.com/sagernet/sing-dns v0.1.2-0.20230209132355-3c2e2957b455 h1:VA/j2Jg+JURgKw2C1Dw2tpjfOZwbLXRy8PJRbJS/HEU=
-github.com/sagernet/sing-dns v0.1.2-0.20230209132355-3c2e2957b455/go.mod h1:nonvn66ja+UNrQl3jzJy0EFRn15QUaCFAVXTXf6TgJ4=
-github.com/sagernet/sing-shadowsocks v0.1.1-0.20230202035033-e3123545f2f7 h1:Plup6oEiyLzY3HDqQ+QsUBzgBGdVmcsgf3t8h940z9U=
-github.com/sagernet/sing-shadowsocks v0.1.1-0.20230202035033-e3123545f2f7/go.mod h1:O5LtOs8Ivw686FqLpO0Zu+A0ROVE15VeqEK3yDRRAms=
+github.com/sagernet/sing v0.1.8-0.20230221060643-3401d210384b h1:Ji2AfGlc4j9AitobOx4k3BCj7eS5nSxL1cgaL81zvlo=
+github.com/sagernet/sing v0.1.8-0.20230221060643-3401d210384b/go.mod h1:jt1w2u7lJQFFSGLiRrRIs5YWmx4kAPfWuOejuDW9qMk=
+github.com/sagernet/sing-dns v0.1.4 h1:7VxgeoSCiiazDSaXXQVcvrTBxFpOePPq/4XdgnUDN+0=
+github.com/sagernet/sing-dns v0.1.4/go.mod h1:1+6pCa48B1AI78lD+/i/dLgpw4MwfnsSpZo0Ds8wzzk=
+github.com/sagernet/sing-shadowsocks v0.1.2-0.20230221080503-769c01d6bba9 h1:qS39eA4C7x+zhEkySbASrtmb6ebdy5v0y2M6mgkmSO0=
+github.com/sagernet/sing-shadowsocks v0.1.2-0.20230221080503-769c01d6bba9/go.mod h1:f3mHTy5shnVM9l8UocMlJgC/1G/zdj5FuEuVXhDinGU=
+github.com/sagernet/sing-shadowtls v0.0.0-20230221123345-78e50cd7b587 h1:OjIXlHT2bblZfp+ciupM4xY9+Ccpj9FsuHRtKRBv+Pg=
+github.com/sagernet/sing-shadowtls v0.0.0-20230221123345-78e50cd7b587/go.mod h1:Kn1VUIprdkwCgkS6SXYaLmIpKzQbqBIKJBMY+RvBhYc=
 github.com/sagernet/sing-tun v0.1.1 h1:2Hg3GAyJWzQ7Ua1j74dE+mI06vaqSBO9yD4tkTjggn4=
 github.com/sagernet/sing-tun v0.1.1/go.mod h1:WzW/SkT+Nh9uJn/FIYUE2YJHYuPwfbh8sATOzU9QDGw=
-github.com/sagernet/sing-vmess v0.1.1-0.20230212211128-cb4e47dd0acb h1:oyd3w17fXNmWVYFUe17YVHJW5CLW9X2mxJFDP/IWrAM=
-github.com/sagernet/sing-vmess v0.1.1-0.20230212211128-cb4e47dd0acb/go.mod h1:9KkmnQzTL4Gvv8U2TRAH2BOITCGsGPpHtUPP5sxn5sY=
+github.com/sagernet/sing-vmess v0.1.2 h1:RbOZNAId2LrCai8epMoQXlf0XTrou0bfcw08hNBg6lM=
+github.com/sagernet/sing-vmess v0.1.2/go.mod h1:9NSj8mZTx1JIY/HF9LaYRppUsVkysIN5tEFpNZujXxY=
 github.com/sagernet/smux v0.0.0-20220831015742-e0f1988e3195 h1:5VBIbVw9q7aKbrFdT83mjkyvQ+VaRsQ6yflTepfln38=
 github.com/sagernet/smux v0.0.0-20220831015742-e0f1988e3195/go.mod h1:yedWtra8nyGJ+SyI+ziwuaGMzBatbB10P1IOOZbbSK8=
 github.com/sagernet/tfo-go v0.0.0-20230207095944-549363a7327d h1:trP/l6ZPWvQ/5Gv99Z7/t/v8iYy06akDMejxW1sznUk=
 github.com/sagernet/tfo-go v0.0.0-20230207095944-549363a7327d/go.mod h1:jk6Ii8Y3En+j2KQDLgdgQGwb3M6y7EL567jFnGYhN9g=
+github.com/sagernet/utls v0.0.0-20230220130002-c08891932056 h1:gDXi/0uYe8dA48UyUI1LM2la5QYN0IvsDvR2H2+kFnA=
+github.com/sagernet/utls v0.0.0-20230220130002-c08891932056/go.mod h1:JKQMZq/O2qnZjdrt+B57olmfgEmLtY9iiSIEYtWvoSM=
 github.com/sagernet/websocket v0.0.0-20220913015213-615516348b4e h1:7uw2njHFGE+VpWamge6o56j2RWk4omF6uLKKxMmcWvs=
 github.com/sagernet/websocket v0.0.0-20220913015213-615516348b4e/go.mod h1:45TUl8+gH4SIKr4ykREbxKWTxkDlSzFENzctB1dVRRY=
 github.com/sagernet/wireguard-go v0.0.0-20221116151939-c99467f53f2c h1:vK2wyt9aWYHHvNLWniwijBu/n4pySypiKRhN32u/JGo=
@@ -160,8 +166,8 @@ github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
 github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
-github.com/u-root/uio v0.0.0-20221213070652-c3537552635f h1:dpx1PHxYqAnXzbryJrWP1NQLzEjwcVgFLhkknuFQ7ww=
-github.com/u-root/uio v0.0.0-20221213070652-c3537552635f/go.mod h1:IogEAUBXDEwX7oR/BMmCctShYs80ql4hF0ySdzGxf7E=
+github.com/u-root/uio v0.0.0-20230215032506-9aa6f7e2d72c h1:PHoGTnweZP+KIg/8Zc6+iOesrIF5yHkpb4GBDxHm7yE=
+github.com/u-root/uio v0.0.0-20230215032506-9aa6f7e2d72c/go.mod h1:eLL9Nub3yfAho7qB0MzZizFhTU2QkLeoVsWdHtDW264=
 github.com/vishvananda/netns v0.0.0-20211101163701-50045581ed74 h1:gga7acRE695APm9hlsSMoOoE65U4/TcqNj90mc69Rlg=
 github.com/vishvananda/netns v0.0.0-20211101163701-50045581ed74/go.mod h1:DD4vA1DwXk04H54A1oHXtwZmA0grkVMdPxx/VGLCah0=
 github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=

inbound/builder.go

@@ -5,18 +5,19 @@ import (
 
 	"github.com/sagernet/sing-box/adapter"
 	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/experimental/libbox/platform"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 	E "github.com/sagernet/sing/common/exceptions"
 )
 
-func New(ctx context.Context, router adapter.Router, logger log.ContextLogger, options option.Inbound) (adapter.Inbound, error) {
+func New(ctx context.Context, router adapter.Router, logger log.ContextLogger, options option.Inbound, platformInterface platform.Interface) (adapter.Inbound, error) {
 	if options.Type == "" {
 		return nil, E.New("missing inbound type")
 	}
 	switch options.Type {
 	case C.TypeTun:
-		return NewTun(ctx, router, logger, options.Tag, options.TunOptions)
+		return NewTun(ctx, router, logger, options.Tag, options.TunOptions, platformInterface)
 	case C.TypeRedirect:
 		return NewRedirect(ctx, router, logger, options.Tag, options.RedirectOptions), nil
 	case C.TypeTProxy:

inbound/http.go

@@ -44,7 +44,7 @@ func NewHTTP(ctx context.Context, router adapter.Router, logger log.ContextLogge
 		authenticator: auth.NewAuthenticator(options.Users),
 	}
 	if options.TLS != nil {
-		tlsConfig, err := tls.NewServer(ctx, logger, common.PtrValueOrDefault(options.TLS))
+		tlsConfig, err := tls.NewServer(ctx, router, logger, common.PtrValueOrDefault(options.TLS))
 		if err != nil {
 			return nil, err
 		}

inbound/hysteria.go

@@ -126,7 +126,7 @@ func NewHysteria(ctx context.Context, router adapter.Router, logger log.ContextL
 	if len(options.TLS.ALPN) == 0 {
 		options.TLS.ALPN = []string{hysteria.DefaultALPN}
 	}
-	tlsConfig, err := tls.NewServer(ctx, logger, common.PtrValueOrDefault(options.TLS))
+	tlsConfig, err := tls.NewServer(ctx, router, logger, common.PtrValueOrDefault(options.TLS))
 	if err != nil {
 		return nil, err
 	}

inbound/naive.go

@@ -60,7 +60,7 @@ func NewNaive(ctx context.Context, router adapter.Router, logger log.ContextLogg
 		return nil, E.New("missing users")
 	}
 	if options.TLS != nil {
-		tlsConfig, err := tls.NewServer(ctx, logger, common.PtrValueOrDefault(options.TLS))
+		tlsConfig, err := tls.NewServer(ctx, router, logger, common.PtrValueOrDefault(options.TLS))
 		if err != nil {
 			return nil, err
 		}

inbound/shadowsocks.go

@@ -68,7 +68,7 @@ func newShadowsocks(ctx context.Context, router adapter.Router, logger log.Conte
 	case common.Contains(shadowaead.List, options.Method):
 		inbound.service, err = shadowaead.NewService(options.Method, nil, options.Password, udpTimeout, inbound.upstreamContextHandler())
 	case common.Contains(shadowaead_2022.List, options.Method):
-		inbound.service, err = shadowaead_2022.NewServiceWithPassword(options.Method, options.Password, udpTimeout, inbound.upstreamContextHandler())
+		inbound.service, err = shadowaead_2022.NewServiceWithPassword(options.Method, options.Password, udpTimeout, inbound.upstreamContextHandler(), router.TimeFunc())
 	default:
 		err = E.New("unsupported method: ", options.Method)
 	}

inbound/shadowsocks_multi.go

@@ -57,6 +57,7 @@ func newShadowsocksMulti(ctx context.Context, router adapter.Router, logger log.
 		options.Password,
 		udpTimeout,
 		adapter.NewUpstreamContextHandler(inbound.newConnection, inbound.newPacketConnection, inbound),
+		router.TimeFunc(),
 	)
 	if err != nil {
 		return nil, err

inbound/shadowtls.go

@@ -1,38 +1,22 @@
 package inbound
 
 import (
-	"bytes"
 	"context"
-	"crypto/hmac"
-	"crypto/sha1"
-	"encoding/binary"
-	"encoding/hex"
-	"io"
 	"net"
-	"os"
 
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/common/dialer"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
-	"github.com/sagernet/sing-box/transport/shadowtls"
+	"github.com/sagernet/sing-shadowtls"
 	"github.com/sagernet/sing/common"
-	"github.com/sagernet/sing/common/buf"
-	"github.com/sagernet/sing/common/bufio"
-	E "github.com/sagernet/sing/common/exceptions"
-	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
-	"github.com/sagernet/sing/common/task"
 )
 
 type ShadowTLS struct {
 	myInboundAdapter
-	handshakeDialer N.Dialer
-	handshakeAddr   M.Socksaddr
-	version         int
-	password        string
-	fallbackAfter   int
+	service *shadowtls.Service
 }
 
 func NewShadowTLS(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.ShadowTLSInboundOptions) (*ShadowTLS, error) {
@@ -46,231 +30,41 @@ func NewShadowTLS(ctx context.Context, router adapter.Router, logger log.Context
 			tag:           tag,
 			listenOptions: options.ListenOptions,
 		},
-		handshakeDialer: dialer.New(router, options.Handshake.DialerOptions),
-		handshakeAddr:   options.Handshake.ServerOptions.Build(),
-		password:        options.Password,
 	}
-	inbound.version = options.Version
-	switch options.Version {
-	case 0:
-		fallthrough
-	case 1:
-	case 2:
-		if options.FallbackAfter == nil {
-			inbound.fallbackAfter = 2
-		} else {
-			inbound.fallbackAfter = *options.FallbackAfter
+
+	var handshakeForServerName map[string]shadowtls.HandshakeConfig
+	if options.Version > 1 {
+		handshakeForServerName = make(map[string]shadowtls.HandshakeConfig)
+		for serverName, serverOptions := range options.HandshakeForServerName {
+			handshakeForServerName[serverName] = shadowtls.HandshakeConfig{
+				Server: serverOptions.ServerOptions.Build(),
+				Dialer: dialer.New(router, serverOptions.DialerOptions),
+			}
 		}
-	case 3:
-	default:
-		return nil, E.New("unknown shadowtls protocol version: ", options.Version)
 	}
+	service, err := shadowtls.NewService(shadowtls.ServiceConfig{
+		Version:  options.Version,
+		Password: options.Password,
+		Users: common.Map(options.Users, func(it option.ShadowTLSUser) shadowtls.User {
+			return (shadowtls.User)(it)
+		}),
+		Handshake: shadowtls.HandshakeConfig{
+			Server: options.Handshake.ServerOptions.Build(),
+			Dialer: dialer.New(router, options.Handshake.DialerOptions),
+		},
+		HandshakeForServerName: handshakeForServerName,
+		StrictMode:             options.StrictMode,
+		Handler:                inbound.upstreamContextHandler(),
+		Logger:                 logger,
+	})
+	if err != nil {
+		return nil, err
+	}
+	inbound.service = service
 	inbound.connHandler = inbound
 	return inbound, nil
 }
 
-func (s *ShadowTLS) NewConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
-	handshakeConn, err := s.handshakeDialer.DialContext(ctx, N.NetworkTCP, s.handshakeAddr)
-	if err != nil {
-		return err
-	}
-	switch s.version {
-	case 1:
-		var handshake task.Group
-		handshake.Append("client handshake", func(ctx context.Context) error {
-			return s.copyUntilHandshakeFinished(handshakeConn, conn)
-		})
-		handshake.Append("server handshake", func(ctx context.Context) error {
-			return s.copyUntilHandshakeFinished(conn, handshakeConn)
-		})
-		handshake.FastFail()
-		handshake.Cleanup(func() {
-			handshakeConn.Close()
-		})
-		err = handshake.Run(ctx)
-		if err != nil {
-			return err
-		}
-		return s.newConnection(ctx, conn, metadata)
-	case 2:
-		hashConn := shadowtls.NewHashWriteConn(conn, s.password)
-		go bufio.Copy(hashConn, handshakeConn)
-		var request *buf.Buffer
-		request, err = s.copyUntilHandshakeFinishedV2(ctx, handshakeConn, conn, hashConn, s.fallbackAfter)
-		if err == nil {
-			handshakeConn.Close()
-			return s.newConnection(ctx, bufio.NewCachedConn(shadowtls.NewConn(conn), request), metadata)
-		} else if err == os.ErrPermission {
-			s.logger.WarnContext(ctx, "fallback connection")
-			hashConn.Fallback()
-			return common.Error(bufio.Copy(handshakeConn, conn))
-		} else {
-			return err
-		}
-	default:
-		fallthrough
-	case 3:
-		var clientHelloFrame *buf.Buffer
-		clientHelloFrame, err = shadowtls.ExtractFrame(conn)
-		if err != nil {
-			return E.Cause(err, "read client handshake")
-		}
-		_, err = handshakeConn.Write(clientHelloFrame.Bytes())
-		if err != nil {
-			clientHelloFrame.Release()
-			return E.Cause(err, "write client handshake")
-		}
-		err = shadowtls.VerifyClientHello(clientHelloFrame.Bytes(), s.password)
-		if err != nil {
-			s.logger.WarnContext(ctx, E.Cause(err, "client hello verify failed"))
-			return bufio.CopyConn(ctx, conn, handshakeConn)
-		}
-		s.logger.TraceContext(ctx, "client hello verify success")
-		clientHelloFrame.Release()
-
-		var serverHelloFrame *buf.Buffer
-		serverHelloFrame, err = shadowtls.ExtractFrame(handshakeConn)
-		if err != nil {
-			return E.Cause(err, "read server handshake")
-		}
-
-		_, err = conn.Write(serverHelloFrame.Bytes())
-		if err != nil {
-			serverHelloFrame.Release()
-			return E.Cause(err, "write server handshake")
-		}
-
-		serverRandom := shadowtls.ExtractServerRandom(serverHelloFrame.Bytes())
-
-		if serverRandom == nil {
-			s.logger.WarnContext(ctx, "server random extract failed, will copy bidirectional")
-			return bufio.CopyConn(ctx, conn, handshakeConn)
-		}
-
-		if !shadowtls.IsServerHelloSupportTLS13(serverHelloFrame.Bytes()) {
-			s.logger.WarnContext(ctx, "TLS 1.3 is not supported, will copy bidirectional")
-			return bufio.CopyConn(ctx, conn, handshakeConn)
-		}
-
-		serverHelloFrame.Release()
-		s.logger.TraceContext(ctx, "client authenticated. server random extracted: ", hex.EncodeToString(serverRandom))
-
-		hmacWrite := hmac.New(sha1.New, []byte(s.password))
-		hmacWrite.Write(serverRandom)
-
-		hmacAdd := hmac.New(sha1.New, []byte(s.password))
-		hmacAdd.Write(serverRandom)
-		hmacAdd.Write([]byte("S"))
-
-		hmacVerify := hmac.New(sha1.New, []byte(s.password))
-		hmacVerifyReset := func() {
-			hmacVerify.Reset()
-			hmacVerify.Write(serverRandom)
-			hmacVerify.Write([]byte("C"))
-		}
-
-		var clientFirstFrame *buf.Buffer
-		var group task.Group
-		var handshakeFinished bool
-		group.Append("client handshake relay", func(ctx context.Context) error {
-			clientFrame, cErr := shadowtls.CopyByFrameUntilHMACMatches(conn, handshakeConn, hmacVerify, hmacVerifyReset)
-			if cErr == nil {
-				clientFirstFrame = clientFrame
-				handshakeFinished = true
-				handshakeConn.Close()
-			}
-			return cErr
-		})
-		group.Append("server handshake relay", func(ctx context.Context) error {
-			cErr := shadowtls.CopyByFrameWithModification(handshakeConn, conn, s.password, serverRandom, hmacWrite)
-			if E.IsClosedOrCanceled(cErr) && handshakeFinished {
-				return nil
-			}
-			return cErr
-		})
-		group.Cleanup(func() {
-			handshakeConn.Close()
-		})
-		err = group.Run(ctx)
-		if err != nil {
-			return E.Cause(err, "handshake relay")
-		}
-
-		s.logger.TraceContext(ctx, "handshake relay finished")
-		return s.newConnection(ctx, bufio.NewCachedConn(shadowtls.NewVerifiedConn(conn, hmacAdd, hmacVerify, nil), clientFirstFrame), metadata)
-	}
-}
-
-func (s *ShadowTLS) copyUntilHandshakeFinished(dst io.Writer, src io.Reader) error {
-	const handshake = 0x16
-	const changeCipherSpec = 0x14
-	var hasSeenChangeCipherSpec bool
-	var tlsHdr [5]byte
-	for {
-		_, err := io.ReadFull(src, tlsHdr[:])
-		if err != nil {
-			return err
-		}
-		length := binary.BigEndian.Uint16(tlsHdr[3:])
-		_, err = io.Copy(dst, io.MultiReader(bytes.NewReader(tlsHdr[:]), io.LimitReader(src, int64(length))))
-		if err != nil {
-			return err
-		}
-		if tlsHdr[0] != handshake {
-			if tlsHdr[0] != changeCipherSpec {
-				return E.New("unexpected tls frame type: ", tlsHdr[0])
-			}
-			if !hasSeenChangeCipherSpec {
-				hasSeenChangeCipherSpec = true
-				continue
-			}
-		}
-		if hasSeenChangeCipherSpec {
-			return nil
-		}
-	}
-}
-
-func (s *ShadowTLS) copyUntilHandshakeFinishedV2(ctx context.Context, dst net.Conn, src io.Reader, hash *shadowtls.HashWriteConn, fallbackAfter int) (*buf.Buffer, error) {
-	const applicationData = 0x17
-	var tlsHdr [5]byte
-	var applicationDataCount int
-	for {
-		_, err := io.ReadFull(src, tlsHdr[:])
-		if err != nil {
-			return nil, err
-		}
-		length := binary.BigEndian.Uint16(tlsHdr[3:])
-		if tlsHdr[0] == applicationData {
-			data := buf.NewSize(int(length))
-			_, err = data.ReadFullFrom(src, int(length))
-			if err != nil {
-				data.Release()
-				return nil, err
-			}
-			if hash.HasContent() && length >= 8 {
-				checksum := hash.Sum()
-				if bytes.Equal(data.To(8), checksum) {
-					s.logger.TraceContext(ctx, "match current hashcode")
-					data.Advance(8)
-					return data, nil
-				} else if hash.LastSum() != nil && bytes.Equal(data.To(8), hash.LastSum()) {
-					s.logger.TraceContext(ctx, "match last hashcode")
-					data.Advance(8)
-					return data, nil
-				}
-			}
-			_, err = io.Copy(dst, io.MultiReader(bytes.NewReader(tlsHdr[:]), data))
-			data.Release()
-			applicationDataCount++
-		} else {
-			_, err = io.Copy(dst, io.MultiReader(bytes.NewReader(tlsHdr[:]), io.LimitReader(src, int64(length))))
-		}
-		if err != nil {
-			return nil, err
-		}
-		if applicationDataCount > fallbackAfter {
-			return nil, os.ErrPermission
-		}
-	}
+func (h *ShadowTLS) NewConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
+	return h.service.NewConnection(adapter.WithContext(log.ContextWithNewID(ctx), &metadata), conn, adapter.UpstreamMetadata(metadata))
 }

inbound/tproxy.go

@@ -100,9 +100,10 @@ type tproxyPacketWriter struct {
 
 func (w *tproxyPacketWriter) WritePacket(buffer *buf.Buffer, destination M.Socksaddr) error {
 	defer buffer.Release()
-	if w.destination == destination && w.conn != nil {
-		_, err := w.conn.WriteToUDPAddrPort(buffer.Bytes(), M.AddrPortFromNet(w.source.LocalAddr()))
-		if err == nil {
+	conn := w.conn
+	if w.destination == destination && conn != nil {
+		_, err := conn.WriteToUDPAddrPort(buffer.Bytes(), M.AddrPortFromNet(w.source.LocalAddr()))
+		if err != nil {
 			w.conn = nil
 		}
 		return err

inbound/trojan.go

@@ -49,7 +49,7 @@ func NewTrojan(ctx context.Context, router adapter.Router, logger log.ContextLog
 		users: options.Users,
 	}
 	if options.TLS != nil {
-		tlsConfig, err := tls.NewServer(ctx, logger, common.PtrValueOrDefault(options.TLS))
+		tlsConfig, err := tls.NewServer(ctx, router, logger, common.PtrValueOrDefault(options.TLS))
 		if err != nil {
 			return nil, err
 		}

inbound/tun.go

@@ -10,6 +10,7 @@ import (
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/common/canceler"
 	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/experimental/libbox/platform"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing-tun"
@@ -34,9 +35,10 @@ type Tun struct {
 	stack                  string
 	tunIf                  tun.Tun
 	tunStack               tun.Stack
+	platformInterface      platform.Interface
 }
 
-func NewTun(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.TunInboundOptions) (*Tun, error) {
+func NewTun(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.TunInboundOptions, platformInterface platform.Interface) (*Tun, error) {
 	tunName := options.InterfaceName
 	if tunName == "" {
 		tunName = tun.CalculateInterfaceName("")
@@ -93,6 +95,7 @@ func NewTun(ctx context.Context, router adapter.Router, logger log.ContextLogger
 		endpointIndependentNat: options.EndpointIndependentNat,
 		udpTimeout:             udpTimeout,
 		stack:                  options.Stack,
+		platformInterface:      platformInterface,
 	}, nil
 }
 
@@ -137,17 +140,25 @@ func (t *Tun) Tag() string {
 }
 
 func (t *Tun) Start() error {
-	if C.IsAndroid {
+	if C.IsAndroid && t.platformInterface == nil {
 		t.tunOptions.BuildAndroidRules(t.router.PackageManager(), t)
 	}
-	tunIf, err := tun.Open(t.tunOptions)
+	var (
+		tunInterface tun.Tun
+		err          error
+	)
+	if t.platformInterface != nil {
+		tunInterface, err = t.platformInterface.OpenTun(t.tunOptions)
+	} else {
+		tunInterface, err = tun.Open(t.tunOptions)
+	}
 	if err != nil {
 		return E.Cause(err, "configure tun interface")
 	}
-	t.tunIf = tunIf
+	t.tunIf = tunInterface
 	t.tunStack, err = tun.NewStack(t.stack, tun.StackOptions{
 		Context:                t.ctx,
-		Tun:                    tunIf,
+		Tun:                    tunInterface,
 		MTU:                    t.tunOptions.MTU,
 		Name:                   t.tunOptions.Name,
 		Inet4Address:           t.tunOptions.Inet4Address,

inbound/vmess.go

@@ -50,6 +50,9 @@ func NewVMess(ctx context.Context, router adapter.Router, logger log.ContextLogg
 		users: options.Users,
 	}
 	var serviceOptions []vmess.ServiceOption
+	if timeFunc := router.TimeFunc(); timeFunc != nil {
+		serviceOptions = append(serviceOptions, vmess.ServiceWithTimeFunc(timeFunc))
+	}
 	if options.Transport != nil && options.Transport.Type != "" {
 		serviceOptions = append(serviceOptions, vmess.ServiceWithDisableHeaderProtection())
 	}
@@ -66,7 +69,7 @@ func NewVMess(ctx context.Context, router adapter.Router, logger log.ContextLogg
 		return nil, err
 	}
 	if options.TLS != nil {
-		inbound.tlsConfig, err = tls.NewServer(ctx, logger, common.PtrValueOrDefault(options.TLS))
+		inbound.tlsConfig, err = tls.NewServer(ctx, router, logger, common.PtrValueOrDefault(options.TLS))
 		if err != nil {
 			return nil, err
 		}

log/default.go

@@ -12,16 +12,22 @@ import (
 var _ Factory = (*simpleFactory)(nil)
 
 type simpleFactory struct {
-	formatter Formatter
-	writer    io.Writer
-	level     Level
+	formatter         Formatter
+	platformFormatter Formatter
+	writer            io.Writer
+	platformWriter    io.Writer
+	level             Level
 }
 
-func NewFactory(formatter Formatter, writer io.Writer) Factory {
+func NewFactory(formatter Formatter, writer io.Writer, platformWriter io.Writer) Factory {
 	return &simpleFactory{
 		formatter: formatter,
-		writer:    writer,
-		level:     LevelTrace,
+		platformFormatter: Formatter{
+			BaseTime: formatter.BaseTime,
+		},
+		writer:         writer,
+		platformWriter: platformWriter,
+		level:          LevelTrace,
 	}
 }
 
@@ -53,7 +59,8 @@ func (l *simpleLogger) Log(ctx context.Context, level Level, args []any) {
 	if level > l.level {
 		return
 	}
-	message := l.formatter.Format(ctx, level, l.tag, F.ToString(args...), time.Now())
+	nowTime := time.Now()
+	message := l.formatter.Format(ctx, level, l.tag, F.ToString(args...), nowTime)
 	if level == LevelPanic {
 		panic(message)
 	}
@@ -61,6 +68,9 @@ func (l *simpleLogger) Log(ctx context.Context, level Level, args []any) {
 	if level == LevelFatal {
 		os.Exit(1)
 	}
+	if l.platformWriter != nil {
+		l.platformWriter.Write([]byte(l.platformFormatter.Format(ctx, level, l.tag, F.ToString(args...), nowTime)))
+	}
 }
 
 func (l *simpleLogger) Trace(args ...any) {

log/export.go

@@ -9,7 +9,7 @@ import (
 var std ContextLogger
 
 func init() {
-	std = NewFactory(Formatter{BaseTime: time.Now()}, os.Stderr).Logger()
+	std = NewFactory(Formatter{BaseTime: time.Now()}, os.Stderr, nil).Logger()
 }
 
 func StdLogger() ContextLogger {

log/observable.go

@@ -14,19 +14,25 @@ import (
 var _ Factory = (*observableFactory)(nil)
 
 type observableFactory struct {
-	formatter  Formatter
-	writer     io.Writer
-	level      Level
-	subscriber *observable.Subscriber[Entry]
-	observer   *observable.Observer[Entry]
+	formatter         Formatter
+	platformFormatter Formatter
+	writer            io.Writer
+	platformWriter    io.Writer
+	level             Level
+	subscriber        *observable.Subscriber[Entry]
+	observer          *observable.Observer[Entry]
 }
 
-func NewObservableFactory(formatter Formatter, writer io.Writer) ObservableFactory {
+func NewObservableFactory(formatter Formatter, writer io.Writer, platformWriter io.Writer) ObservableFactory {
 	factory := &observableFactory{
-		formatter:  formatter,
-		writer:     writer,
-		level:      LevelTrace,
-		subscriber: observable.NewSubscriber[Entry](128),
+		formatter: formatter,
+		platformFormatter: Formatter{
+			BaseTime: formatter.BaseTime,
+		},
+		writer:         writer,
+		platformWriter: platformWriter,
+		level:          LevelTrace,
+		subscriber:     observable.NewSubscriber[Entry](128),
 	}
 	factory.observer = observable.NewObserver[Entry](factory.subscriber, 64)
 	return factory
@@ -74,7 +80,8 @@ func (l *observableLogger) Log(ctx context.Context, level Level, args []any) {
 	if level > l.level {
 		return
 	}
-	message, messageSimple := l.formatter.FormatWithSimple(ctx, level, l.tag, F.ToString(args...), time.Now())
+	nowTime := time.Now()
+	message, messageSimple := l.formatter.FormatWithSimple(ctx, level, l.tag, F.ToString(args...), nowTime)
 	if level == LevelPanic {
 		panic(message)
 	}
@@ -83,6 +90,9 @@ func (l *observableLogger) Log(ctx context.Context, level Level, args []any) {
 		os.Exit(1)
 	}
 	l.subscriber.Emit(Entry{level, messageSimple})
+	if l.platformWriter != nil {
+		l.platformWriter.Write([]byte(l.formatter.Format(ctx, level, l.tag, F.ToString(args...), nowTime)))
+	}
 }
 
 func (l *observableLogger) Trace(args ...any) {

log/override.go

@@ -12,7 +12,7 @@ func ContextWithOverrideLevel(ctx context.Context, level Level) context.Context
 
 func OverrideLevelFromContext(origin Level, ctx context.Context) Level {
 	level, loaded := ctx.Value((*overrideLevelKey)(nil)).(Level)
-	if !loaded || origin < level {
+	if !loaded || origin > level {
 		return origin
 	}
 	return level

mkdocs.yml

@@ -43,6 +43,8 @@ nav:
           - configuration/dns/index.md
           - DNS Server: configuration/dns/server.md
           - DNS Rule: configuration/dns/rule.md
+      - NTP:
+          - configuration/ntp/index.md
       - Route:
           - configuration/route/index.md
           - GeoIP: configuration/route/geoip.md
@@ -149,21 +151,27 @@ plugins:
           Features: 特性
           Support: 支持
           Change Log: 更新日志
+
           Configuration: 配置
           Log: 日志
           DNS Server: DNS 服务器
           DNS Rule: DNS 规则
+
           Route: 路由
           Route Rule: 路由规则
           Protocol Sniff: 协议探测
+
           Experimental: 实验性
+
           Shared: 通用
           Listen Fields: 监听字段
           Dial Fields: 拨号字段
           Multiplex: 多路复用
           V2Ray Transport: V2Ray 传输层
+
           Inbound: 入站
           Outbound: 出站
+
           FAQ: 常见问题
           Known Issues: 已知问题
           Examples: 示例

ntp/service.go

@@ -0,0 +1,99 @@
+package ntp
+
+import (
+	"context"
+	"time"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/common/dialer"
+	"github.com/sagernet/sing-box/option"
+	E "github.com/sagernet/sing/common/exceptions"
+	"github.com/sagernet/sing/common/logger"
+	M "github.com/sagernet/sing/common/metadata"
+	N "github.com/sagernet/sing/common/network"
+	"github.com/sagernet/sing/common/ntp"
+)
+
+const timeLayout = "2006-01-02 15:04:05 -0700"
+
+var _ adapter.TimeService = (*Service)(nil)
+
+type Service struct {
+	ctx    context.Context
+	cancel context.CancelFunc
+	server M.Socksaddr
+	dialer N.Dialer
+	logger logger.Logger
+
+	ticker      *time.Ticker
+	clockOffset time.Duration
+}
+
+func NewService(ctx context.Context, router adapter.Router, logger logger.Logger, options option.NTPOptions) *Service {
+	ctx, cancel := context.WithCancel(ctx)
+	server := options.ServerOptions.Build()
+	if server.Port == 0 {
+		server.Port = 123
+	}
+	var interval time.Duration
+	if options.Interval > 0 {
+		interval = time.Duration(options.Interval)
+	} else {
+		interval = 30 * time.Minute
+	}
+	return &Service{
+		ctx:    ctx,
+		cancel: cancel,
+		server: server,
+		dialer: dialer.New(router, options.DialerOptions),
+		logger: logger,
+		ticker: time.NewTicker(interval),
+	}
+}
+
+func (s *Service) Start() error {
+	err := s.update()
+	if err != nil {
+		return E.Cause(err, "initialize time")
+	}
+	s.logger.Info("updated time: ", s.TimeFunc()().Local().Format(timeLayout))
+	go s.loopUpdate()
+	return nil
+}
+
+func (s *Service) Close() error {
+	s.ticker.Stop()
+	s.cancel()
+	return nil
+}
+
+func (s *Service) TimeFunc() func() time.Time {
+	return func() time.Time {
+		return time.Now().Add(s.clockOffset)
+	}
+}
+
+func (s *Service) loopUpdate() {
+	for {
+		select {
+		case <-s.ctx.Done():
+			return
+		case <-s.ticker.C:
+		}
+		err := s.update()
+		if err == nil {
+			s.logger.Debug("updated time: ", s.TimeFunc()().Local().Format(timeLayout))
+		} else {
+			s.logger.Warn("update time: ", err)
+		}
+	}
+}
+
+func (s *Service) update() error {
+	response, err := ntp.Exchange(s.ctx, s.dialer, s.server)
+	if err != nil {
+		return err
+	}
+	s.clockOffset = response.ClockOffset
+	return nil
+}

option/config.go

@@ -5,16 +5,19 @@ import (
 	"strings"
 
 	"github.com/sagernet/sing-box/common/json"
+	"github.com/sagernet/sing-box/experimental/libbox/platform"
 	E "github.com/sagernet/sing/common/exceptions"
 )
 
 type _Options struct {
-	Log          *LogOptions          `json:"log,omitempty"`
-	DNS          *DNSOptions          `json:"dns,omitempty"`
-	Inbounds     []Inbound            `json:"inbounds,omitempty"`
-	Outbounds    []Outbound           `json:"outbounds,omitempty"`
-	Route        *RouteOptions        `json:"route,omitempty"`
-	Experimental *ExperimentalOptions `json:"experimental,omitempty"`
+	Log               *LogOptions          `json:"log,omitempty"`
+	DNS               *DNSOptions          `json:"dns,omitempty"`
+	NTP               *NTPOptions          `json:"ntp,omitempty"`
+	Inbounds          []Inbound            `json:"inbounds,omitempty"`
+	Outbounds         []Outbound           `json:"outbounds,omitempty"`
+	Route             *RouteOptions        `json:"route,omitempty"`
+	Experimental      *ExperimentalOptions `json:"experimental,omitempty"`
+	PlatformInterface platform.Interface   `json:"-"`
 }
 
 type Options _Options

option/ntp.go

@@ -0,0 +1,8 @@
+package option
+
+type NTPOptions struct {
+	Enabled  bool     `json:"enabled"`
+	Interval Duration `json:"interval,omitempty"`
+	ServerOptions
+	DialerOptions
+}

option/shadowtls.go

@@ -2,10 +2,17 @@ package option
 
 type ShadowTLSInboundOptions struct {
 	ListenOptions
-	Version       int                       `json:"version,omitempty"`
-	Password      string                    `json:"password,omitempty"`
-	FallbackAfter *int                      `json:"fallback_after,omitempty"`
-	Handshake     ShadowTLSHandshakeOptions `json:"handshake"`
+	Version                int                                  `json:"version,omitempty"`
+	Password               string                               `json:"password,omitempty"`
+	Users                  []ShadowTLSUser                      `json:"users,omitempty"`
+	Handshake              ShadowTLSHandshakeOptions            `json:"handshake,omitempty"`
+	HandshakeForServerName map[string]ShadowTLSHandshakeOptions `json:"handshake_for_server_name,omitempty"`
+	StrictMode             bool                                 `json:"strict_mode,omitempty"`
+}
+
+type ShadowTLSUser struct {
+	Name     string `json:"name,omitempty"`
+	Password string `json:"password,omitempty"`
 }
 
 type ShadowTLSHandshakeOptions struct {

outbound/shadowsocks.go

@@ -34,7 +34,7 @@ type Shadowsocks struct {
 }
 
 func NewShadowsocks(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.ShadowsocksOutboundOptions) (*Shadowsocks, error) {
-	method, err := shadowimpl.FetchMethod(options.Method, options.Password)
+	method, err := shadowimpl.FetchMethod(options.Method, options.Password, router.TimeFunc())
 	if err != nil {
 		return nil, err
 	}

outbound/shadowtls.go

@@ -2,8 +2,6 @@ package outbound
 
 import (
 	"context"
-	"crypto/hmac"
-	"crypto/sha1"
 	"net"
 	"os"
 
@@ -13,9 +11,8 @@ import (
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
-	"github.com/sagernet/sing-box/transport/shadowtls"
+	"github.com/sagernet/sing-shadowtls"
 	"github.com/sagernet/sing/common"
-	E "github.com/sagernet/sing/common/exceptions"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
 )
@@ -24,11 +21,7 @@ var _ adapter.Outbound = (*ShadowTLS)(nil)
 
 type ShadowTLS struct {
 	myOutboundAdapter
-	dialer     N.Dialer
-	serverAddr M.Socksaddr
-	tlsConfig  tls.Config
-	version    int
-	password   string
+	client *shadowtls.Client
 }
 
 func NewShadowTLS(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.ShadowTLSOutboundOptions) (*ShadowTLS, error) {
@@ -40,84 +33,61 @@ func NewShadowTLS(ctx context.Context, router adapter.Router, logger log.Context
 			logger:   logger,
 			tag:      tag,
 		},
-		dialer:     dialer.New(router, options.DialerOptions),
-		serverAddr: options.ServerOptions.Build(),
-		password:   options.Password,
 	}
 	if options.TLS == nil || !options.TLS.Enabled {
 		return nil, C.ErrTLSRequired
 	}
-	outbound.version = options.Version
-	switch options.Version {
-	case 0:
-		fallthrough
-	case 1:
+	if options.Version == 1 {
 		options.TLS.MinVersion = "1.2"
 		options.TLS.MaxVersion = "1.2"
-	case 2:
-	case 3:
-	default:
-		return nil, E.New("unknown shadowtls protocol version: ", options.Version)
-	}
-	var err error
-	if options.Version != 3 {
-		outbound.tlsConfig, err = tls.NewClient(router, options.Server, common.PtrValueOrDefault(options.TLS))
-	} else {
-		outbound.tlsConfig, err = shadowtls.NewClientTLSConfig(options.Server, common.PtrValueOrDefault(options.TLS), options.Password)
 	}
+	tlsConfig, err := tls.NewClient(router, options.Server, common.PtrValueOrDefault(options.TLS))
 	if err != nil {
 		return nil, err
 	}
+
+	var tlsHandshakeFunc shadowtls.TLSHandshakeFunc
+	switch options.Version {
+	case 1, 2:
+		tlsHandshakeFunc = func(ctx context.Context, conn net.Conn, _ shadowtls.TLSSessionIDGeneratorFunc) error {
+			return common.Error(tls.ClientHandshake(ctx, conn, tlsConfig))
+		}
+	case 3:
+		if idConfig, loaded := tlsConfig.(tls.ConfigWithSessionIDGenerator); loaded {
+			tlsHandshakeFunc = func(ctx context.Context, conn net.Conn, sessionIDGenerator shadowtls.TLSSessionIDGeneratorFunc) error {
+				idConfig.SetSessionIDGenerator(sessionIDGenerator)
+				return common.Error(tls.ClientHandshake(ctx, conn, tlsConfig))
+			}
+		} else {
+			stdTLSConfig, err := tlsConfig.Config()
+			if err != nil {
+				return nil, err
+			}
+			tlsHandshakeFunc = shadowtls.DefaultTLSHandshakeFunc(options.Password, stdTLSConfig)
+		}
+	}
+	client, err := shadowtls.NewClient(shadowtls.ClientConfig{
+		Version:      options.Version,
+		Password:     options.Password,
+		Server:       options.ServerOptions.Build(),
+		Dialer:       dialer.New(router, options.DialerOptions),
+		TLSHandshake: tlsHandshakeFunc,
+		Logger:       logger,
+	})
+	if err != nil {
+		return nil, err
+	}
+	outbound.client = client
 	return outbound, nil
 }
 
 func (s *ShadowTLS) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
 	switch N.NetworkName(network) {
 	case N.NetworkTCP:
+		return s.client.DialContext(ctx)
 	default:
 		return nil, os.ErrInvalid
 	}
-	conn, err := s.dialer.DialContext(ctx, N.NetworkTCP, s.serverAddr)
-	if err != nil {
-		return nil, err
-	}
-	switch s.version {
-	default:
-		fallthrough
-	case 1:
-		_, err = tls.ClientHandshake(ctx, conn, s.tlsConfig)
-		if err != nil {
-			return nil, err
-		}
-		return conn, nil
-	case 2:
-		hashConn := shadowtls.NewHashReadConn(conn, s.password)
-		_, err = tls.ClientHandshake(ctx, hashConn, s.tlsConfig)
-		if err != nil {
-			return nil, err
-		}
-		return shadowtls.NewClientConn(hashConn), nil
-	case 3:
-		streamWrapper := shadowtls.NewStreamWrapper(conn, s.password)
-		_, err = tls.ClientHandshake(ctx, streamWrapper, s.tlsConfig)
-		if err != nil {
-			return nil, err
-		}
-		authorized, serverRandom, readHMAC := streamWrapper.Authorized()
-		if !authorized {
-			return nil, E.New("traffic hijacked or TLS1.3 is not supported")
-		}
-
-		hmacAdd := hmac.New(sha1.New, []byte(s.password))
-		hmacAdd.Write(serverRandom)
-		hmacAdd.Write([]byte("C"))
-
-		hmacVerify := hmac.New(sha1.New, []byte(s.password))
-		hmacVerify.Write(serverRandom)
-		hmacVerify.Write([]byte("S"))
-
-		return shadowtls.NewVerifiedConn(conn, hmacAdd, hmacVerify, readHMAC), nil
-	}
 }
 
 func (s *ShadowTLS) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {

outbound/vmess.go

@@ -74,6 +74,9 @@ func NewVMess(ctx context.Context, router adapter.Router, logger log.ContextLogg
 		return nil, E.New("unknown packet encoding: ", options.PacketEncoding)
 	}
 	var clientOptions []vmess.ClientOption
+	if timeFunc := router.TimeFunc(); timeFunc != nil {
+		clientOptions = append(clientOptions, vmess.ClientWithTimeFunc(timeFunc))
+	}
 	if options.GlobalPadding {
 		clientOptions = append(clientOptions, vmess.ClientWithGlobalPadding())
 	}

route/router.go

@@ -22,7 +22,9 @@ import (
 	"github.com/sagernet/sing-box/common/sniff"
 	"github.com/sagernet/sing-box/common/warning"
 	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/experimental/libbox/platform"
 	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing-box/ntp"
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing-dns"
 	"github.com/sagernet/sing-tun"
@@ -95,11 +97,21 @@ type Router struct {
 	interfaceMonitor                   tun.DefaultInterfaceMonitor
 	packageManager                     tun.PackageManager
 	processSearcher                    process.Searcher
+	timeService                        adapter.TimeService
 	clashServer                        adapter.ClashServer
 	v2rayServer                        adapter.V2RayServer
+	platformInterface                  platform.Interface
 }
 
-func NewRouter(ctx context.Context, logFactory log.Factory, options option.RouteOptions, dnsOptions option.DNSOptions, inbounds []option.Inbound) (*Router, error) {
+func NewRouter(
+	ctx context.Context,
+	logFactory log.Factory,
+	options option.RouteOptions,
+	dnsOptions option.DNSOptions,
+	ntpOptions option.NTPOptions,
+	inbounds []option.Inbound,
+	platformInterface platform.Interface,
+) (*Router, error) {
 	if options.DefaultInterface != "" {
 		warnDefaultInterfaceOnUnsupportedPlatform.Check()
 	}
@@ -127,6 +139,7 @@ func NewRouter(ctx context.Context, logFactory log.Factory, options option.Route
 		autoDetectInterface:   options.AutoDetectInterface,
 		defaultInterface:      options.DefaultInterface,
 		defaultMark:           options.DefaultMark,
+		platformInterface:     platformInterface,
 	}
 	router.dnsClient = dns.NewClient(dnsOptions.DNSClientOptions.DisableCache, dnsOptions.DNSClientOptions.DisableExpire, router.dnsLogger)
 	for i, ruleOptions := range options.Rules {
@@ -248,9 +261,9 @@ func NewRouter(ctx context.Context, logFactory log.Factory, options option.Route
 	router.transportMap = transportMap
 	router.transportDomainStrategy = transportDomainStrategy
 
-	needInterfaceMonitor := options.AutoDetectInterface || common.Any(inbounds, func(inbound option.Inbound) bool {
+	needInterfaceMonitor := platformInterface == nil && (options.AutoDetectInterface || common.Any(inbounds, func(inbound option.Inbound) bool {
 		return inbound.HTTPOptions.SetSystemProxy || inbound.MixedOptions.SetSystemProxy || inbound.TunOptions.AutoRoute
-	})
+	}))
 
 	if needInterfaceMonitor {
 		networkMonitor, err := tun.NewNetworkUpdateMonitor(router)
@@ -272,7 +285,7 @@ func NewRouter(ctx context.Context, logFactory log.Factory, options option.Route
 	}
 
 	needFindProcess := hasRule(options.Rules, isProcessRule) || hasDNSRule(dnsOptions.Rules, isProcessDNSRule) || options.FindProcess
-	needPackageManager := C.IsAndroid && (needFindProcess || common.Any(inbounds, func(inbound option.Inbound) bool {
+	needPackageManager := C.IsAndroid && platformInterface == nil && (needFindProcess || common.Any(inbounds, func(inbound option.Inbound) bool {
 		return len(inbound.TunOptions.IncludePackage) > 0 || len(inbound.TunOptions.ExcludePackage) > 0
 	}))
 	if needPackageManager {
@@ -283,18 +296,25 @@ func NewRouter(ctx context.Context, logFactory log.Factory, options option.Route
 		router.packageManager = packageManager
 	}
 	if needFindProcess {
-		searcher, err := process.NewSearcher(process.Config{
-			Logger:         logFactory.NewLogger("router/process"),
-			PackageManager: router.packageManager,
-		})
-		if err != nil {
-			if err != os.ErrInvalid {
-				router.logger.Warn(E.Cause(err, "create process searcher"))
-			}
+		if platformInterface != nil {
+			router.processSearcher = platformInterface
 		} else {
-			router.processSearcher = searcher
+			searcher, err := process.NewSearcher(process.Config{
+				Logger:         logFactory.NewLogger("router/process"),
+				PackageManager: router.packageManager,
+			})
+			if err != nil {
+				if err != os.ErrInvalid {
+					router.logger.Warn(E.Cause(err, "create process searcher"))
+				}
+			} else {
+				router.processSearcher = searcher
+			}
 		}
 	}
+	if ntpOptions.Enabled {
+		router.timeService = ntp.NewService(ctx, router, logFactory.NewLogger("ntp"), ntpOptions)
+	}
 	return router, nil
 }
 
@@ -453,6 +473,12 @@ func (r *Router) Start() error {
 			return E.Cause(err, "initialize DNS server[", i, "]")
 		}
 	}
+	if r.timeService != nil {
+		err := r.timeService.Start()
+		if err != nil {
+			return E.Cause(err, "initialize time service")
+		}
+	}
 	return nil
 }
 
@@ -480,6 +506,7 @@ func (r *Router) Close() error {
 		r.interfaceMonitor,
 		r.networkMonitor,
 		r.packageManager,
+		r.timeService,
 	)
 }
 
@@ -737,6 +764,21 @@ func (r *Router) AutoDetectInterface() bool {
 	return r.autoDetectInterface
 }
 
+func (r *Router) AutoDetectInterfaceFunc() control.Func {
+	if r.platformInterface != nil {
+		return r.platformInterface.AutoDetectInterfaceControl()
+	} else {
+		return control.BindToInterfaceFunc(r.InterfaceFinder(), func(network string, address string) (interfaceName string, interfaceIndex int) {
+			remoteAddr := M.ParseSocksaddr(address).Addr
+			if C.IsLinux {
+				return r.InterfaceMonitor().DefaultInterfaceName(remoteAddr), -1
+			} else {
+				return "", r.InterfaceMonitor().DefaultInterfaceIndex(remoteAddr)
+			}
+		})
+	}
+}
+
 func (r *Router) DefaultInterface() string {
 	return r.defaultInterface
 }
@@ -761,6 +803,13 @@ func (r *Router) PackageManager() tun.PackageManager {
 	return r.packageManager
 }
 
+func (r *Router) TimeFunc() func() time.Time {
+	if r.timeService == nil {
+		return nil
+	}
+	return r.timeService.TimeFunc()
+}
+
 func (r *Router) ClashServer() adapter.ClashServer {
 	return r.clashServer
 }
@@ -849,6 +898,8 @@ func (r *Router) prepareGeoIPDatabase() error {
 		geoPath = "geoip.db"
 		if foundPath, loaded := C.FindPath(geoPath); loaded {
 			geoPath = foundPath
+		} else {
+			geoPath = C.BasePath(geoPath)
 		}
 	}
 	if !rw.FileExists(geoPath) {
@@ -861,7 +912,7 @@ func (r *Router) prepareGeoIPDatabase() error {
 			}
 			r.logger.Error("download geoip database: ", err)
 			os.Remove(geoPath)
-			time.Sleep(10 * time.Second)
+			// time.Sleep(10 * time.Second)
 		}
 		if err != nil {
 			return err
@@ -884,6 +935,8 @@ func (r *Router) prepareGeositeDatabase() error {
 		geoPath = "geosite.db"
 		if foundPath, loaded := C.FindPath(geoPath); loaded {
 			geoPath = foundPath
+		} else {
+			geoPath = C.BasePath(geoPath)
 		}
 	}
 	if !rw.FileExists(geoPath) {
@@ -896,7 +949,7 @@ func (r *Router) prepareGeositeDatabase() error {
 			}
 			r.logger.Error("download geosite database: ", err)
 			os.Remove(geoPath)
-			time.Sleep(10 * time.Second)
+			// time.Sleep(10 * time.Second)
 		}
 		if err != nil {
 			return err
@@ -950,6 +1003,7 @@ func (r *Router) downloadGeoIPDatabase(savePath string) error {
 			},
 		},
 	}
+	defer httpClient.CloseIdleConnections()
 	response, err := httpClient.Get(downloadURL)
 	if err != nil {
 		return err
@@ -997,6 +1051,7 @@ func (r *Router) downloadGeositeDatabase(savePath string) error {
 			},
 		},
 	}
+	defer httpClient.CloseIdleConnections()
 	response, err := httpClient.Get(downloadURL)
 	if err != nil {
 		return err

test/clash_test.go

@@ -75,7 +75,8 @@ func init() {
 
 	list, err := dockerClient.ImageList(context.Background(), types.ImageListOptions{All: true})
 	if err != nil {
-		panic(err)
+		log.Warn(err)
+		return
 	}
 
 	imageExist := func(image string) bool {

test/go.mod

@@ -10,8 +10,8 @@ require (
 	github.com/docker/docker v20.10.18+incompatible
 	github.com/docker/go-connections v0.4.0
 	github.com/gofrs/uuid v4.4.0+incompatible
-	github.com/sagernet/sing v0.1.7-0.20230209132010-5f1ef3441c13
-	github.com/sagernet/sing-shadowsocks v0.1.1-0.20230202035033-e3123545f2f7
+	github.com/sagernet/sing v0.1.8-0.20230221060643-3401d210384b
+	github.com/sagernet/sing-shadowsocks v0.1.2-0.20230221080503-769c01d6bba9
 	github.com/spyzhov/ajson v0.7.1
 	github.com/stretchr/testify v1.8.1
 	go.uber.org/goleak v1.2.0
@@ -23,7 +23,7 @@ require (
 	github.com/Dreamacro/clash v1.13.0 // indirect
 	github.com/Microsoft/go-winio v0.5.1 // indirect
 	github.com/ajg/form v1.5.1 // indirect
-	github.com/andybalholm/brotli v1.0.4 // indirect
+	github.com/andybalholm/brotli v1.0.5 // indirect
 	github.com/caddyserver/certmagic v0.17.2 // indirect
 	github.com/cloudflare/circl v1.2.1-0.20221019164342-6ab4dfed8f3c // indirect
 	github.com/cretz/bine v0.2.0 // indirect
@@ -41,7 +41,7 @@ require (
 	github.com/google/btree v1.0.1 // indirect
 	github.com/google/pprof v0.0.0-20210407192527-94a9f03dee38 // indirect
 	github.com/hashicorp/yamux v0.1.1 // indirect
-	github.com/insomniacslk/dhcp v0.0.0-20221215072855-de60144f33f8 // indirect
+	github.com/insomniacslk/dhcp v0.0.0-20230220010740-598984875576 // indirect
 	github.com/josharian/native v1.1.0 // indirect
 	github.com/klauspost/compress v1.15.15 // indirect
 	github.com/klauspost/cpuid/v2 v2.1.1 // indirect
@@ -55,6 +55,7 @@ require (
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.0.2 // indirect
 	github.com/oschwald/maxminddb-golang v1.10.0 // indirect
+	github.com/pierrec/lz4/v4 v4.1.14 // indirect
 	github.com/pires/go-proxyproto v0.6.2 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
@@ -62,20 +63,21 @@ require (
 	github.com/quic-go/qtls-go1-18 v0.2.0 // indirect
 	github.com/quic-go/qtls-go1-19 v0.2.0 // indirect
 	github.com/quic-go/qtls-go1-20 v0.1.0 // indirect
-	github.com/refraction-networking/utls v1.2.2 // indirect
 	github.com/sagernet/cloudflare-tls v0.0.0-20221031050923-d70792f4c3a0 // indirect
 	github.com/sagernet/go-tun2socks v1.16.12-0.20220818015926-16cb67876a61 // indirect
 	github.com/sagernet/netlink v0.0.0-20220905062125-8043b4a9aa97 // indirect
 	github.com/sagernet/quic-go v0.0.0-20230202071646-a8c8afb18b32 // indirect
-	github.com/sagernet/sing-dns v0.1.2-0.20230209132355-3c2e2957b455 // indirect
+	github.com/sagernet/sing-dns v0.1.4 // indirect
+	github.com/sagernet/sing-shadowtls v0.0.0-20230221075551-c5ad05179260 // indirect
 	github.com/sagernet/sing-tun v0.1.1 // indirect
-	github.com/sagernet/sing-vmess v0.1.1-0.20230212211128-cb4e47dd0acb // indirect
+	github.com/sagernet/sing-vmess v0.1.2 // indirect
 	github.com/sagernet/smux v0.0.0-20220831015742-e0f1988e3195 // indirect
 	github.com/sagernet/tfo-go v0.0.0-20230207095944-549363a7327d // indirect
+	github.com/sagernet/utls v0.0.0-20230220130002-c08891932056 // indirect
 	github.com/sagernet/websocket v0.0.0-20220913015213-615516348b4e // indirect
 	github.com/sagernet/wireguard-go v0.0.0-20221116151939-c99467f53f2c // indirect
 	github.com/sirupsen/logrus v1.9.0 // indirect
-	github.com/u-root/uio v0.0.0-20221213070652-c3537552635f // indirect
+	github.com/u-root/uio v0.0.0-20230215032506-9aa6f7e2d72c // indirect
 	github.com/vishvananda/netns v0.0.0-20211101163701-50045581ed74 // indirect
 	go.etcd.io/bbolt v1.3.7 // indirect
 	go.uber.org/atomic v1.10.0 // indirect

test/go.sum

@@ -7,8 +7,8 @@ github.com/Microsoft/go-winio v0.5.1 h1:aPJp2QD7OOrhO5tQXqQoGSJc+DjDtWTGLOmNyAm6
 github.com/Microsoft/go-winio v0.5.1/go.mod h1:JPGBdM1cNvN/6ISo+n8V5iA4v8pBzdOpzfwIujj1a84=
 github.com/ajg/form v1.5.1 h1:t9c7v8JUKu/XxOGBU0yjNpaMloxGEJhUkqFRq0ibGeU=
 github.com/ajg/form v1.5.1/go.mod h1:uL1WgH+h2mgNtvBq0339dVnzXdBETtL2LeUXaIv25UY=
-github.com/andybalholm/brotli v1.0.4 h1:V7DdXeJtZscaqfNuAdSRuRFzuiKlHSC/Zh3zl9qY3JY=
-github.com/andybalholm/brotli v1.0.4/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig=
+github.com/andybalholm/brotli v1.0.5 h1:8uQZIdzKmjc/iuPu7O2ioW48L81FgatrcpfFmiq/cCs=
+github.com/andybalholm/brotli v1.0.5/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig=
 github.com/benbjohnson/clock v1.1.0 h1:Q92kusRqC1XV2MjkWETPvjJVqKetz1OzxZB7mHJLju8=
 github.com/caddyserver/certmagic v0.17.2 h1:o30seC1T/dBqBCNNGNHWwj2i5/I/FMjBbTAhjADP3nE=
 github.com/caddyserver/certmagic v0.17.2/go.mod h1:ouWUuC490GOLJzkyN35eXfV8bSbwMwSf4bdhkIxtdQE=
@@ -67,8 +67,8 @@ github.com/hashicorp/yamux v0.1.1 h1:yrQxtgseBDrq9Y652vSRDvsKCJKOUD+GzTS4Y0Y8pvE
 github.com/hashicorp/yamux v0.1.1/go.mod h1:CtWFDAQgb7dxtzFs4tWbplKIe2jSi3+5vKbgIO0SLnQ=
 github.com/hugelgupf/socketpair v0.0.0-20190730060125-05d35a94e714/go.mod h1:2Goc3h8EklBH5mspfHFxBnEoURQCGzQQH1ga9Myjvis=
 github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
-github.com/insomniacslk/dhcp v0.0.0-20221215072855-de60144f33f8 h1:Z72DOke2yOK0Ms4Z2LK1E1OrRJXOxSj5DllTz2FYTRg=
-github.com/insomniacslk/dhcp v0.0.0-20221215072855-de60144f33f8/go.mod h1:m5WMe03WCvWcXjRnhvaAbAAXdCnu20J5P+mmH44ZzpE=
+github.com/insomniacslk/dhcp v0.0.0-20230220010740-598984875576 h1:ehee0+xI4xtJTRJhN+PVA2GzCLB6KRgHRoZMg2lHwJU=
+github.com/insomniacslk/dhcp v0.0.0-20230220010740-598984875576/go.mod h1:yGKD3yZIGAjEZXiIjVQ0SQ09Y/RzETOoqEOi6nXqX0Y=
 github.com/josharian/native v1.0.1-0.20221213033349-c1e37c09b531/go.mod h1:7X/raswPFr05uY3HiLlYeyQntB6OO7E/d2Cu7qoaN2w=
 github.com/josharian/native v1.1.0 h1:uuaP0hAbW7Y4l0ZRQ6C9zfb7Mg1mbFKry/xzDAfmtLA=
 github.com/josharian/native v1.1.0/go.mod h1:7X/raswPFr05uY3HiLlYeyQntB6OO7E/d2Cu7qoaN2w=
@@ -114,6 +114,8 @@ github.com/opencontainers/image-spec v1.0.2 h1:9yCKha/T5XdGtO0q9Q9a6T5NUCsTn/DrB
 github.com/opencontainers/image-spec v1.0.2/go.mod h1:BtxoFyWECRxE4U/7sNtV5W15zMzWCbyJoFRP3s7yZA0=
 github.com/oschwald/maxminddb-golang v1.10.0 h1:Xp1u0ZhqkSuopaKmk1WwHtjF0H9Hd9181uj2MQ5Vndg=
 github.com/oschwald/maxminddb-golang v1.10.0/go.mod h1:Y2ELenReaLAZ0b400URyGwvYxHV1dLIxBuyOsyYjHK0=
+github.com/pierrec/lz4/v4 v4.1.14 h1:+fL8AQEZtz/ijeNnpduH0bROTu0O3NZAlPjQxGn8LwE=
+github.com/pierrec/lz4/v4 v4.1.14/go.mod h1:gZWDp/Ze/IJXGXf23ltt2EXimqmTUXEy0GFuRQyBid4=
 github.com/pires/go-proxyproto v0.6.2 h1:KAZ7UteSOt6urjme6ZldyFm4wDe/z0ZUP0Yv0Dos0d8=
 github.com/pires/go-proxyproto v0.6.2/go.mod h1:Odh9VFOZJCf9G8cLW5o435Xf1J95Jw9Gw5rnCjcwzAY=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
@@ -128,8 +130,6 @@ github.com/quic-go/qtls-go1-19 v0.2.0 h1:Cvn2WdhyViFUHoOqK52i51k4nDX8EwIh5VJiVM4
 github.com/quic-go/qtls-go1-19 v0.2.0/go.mod h1:ySOI96ew8lnoKPtSqx2BlI5wCpUVPT05RMAlajtnyOI=
 github.com/quic-go/qtls-go1-20 v0.1.0 h1:d1PK3ErFy9t7zxKsG3NXBJXZjp/kMLoIb3y/kV54oAI=
 github.com/quic-go/qtls-go1-20 v0.1.0/go.mod h1:JKtK6mjbAVcUTN/9jZpvLbGxvdWIKS8uT7EiStoU1SM=
-github.com/refraction-networking/utls v1.2.2 h1:uBE6V173CwG8MQrSBpNZHAix1fxOvuLKYyjFAu3uqo0=
-github.com/refraction-networking/utls v1.2.2/go.mod h1:L1goe44KvhnTfctUffM2isnJpSjPlYShrhXDeZaoYKw=
 github.com/sagernet/cloudflare-tls v0.0.0-20221031050923-d70792f4c3a0 h1:KyhtFFt1Jtp5vW2ohNvstvQffTOQ/s5vENuGXzdA+TM=
 github.com/sagernet/cloudflare-tls v0.0.0-20221031050923-d70792f4c3a0/go.mod h1:D4SFEOkJK+4W1v86ZhX0jPM0rAL498fyQAChqMtes/I=
 github.com/sagernet/go-tun2socks v1.16.12-0.20220818015926-16cb67876a61 h1:5+m7c6AkmAylhauulqN/c5dnh8/KssrE9c93TQrXldA=
@@ -140,20 +140,24 @@ github.com/sagernet/quic-go v0.0.0-20230202071646-a8c8afb18b32 h1:tztuJB+giOWNRK
 github.com/sagernet/quic-go v0.0.0-20230202071646-a8c8afb18b32/go.mod h1:QMCkxXAC3CvBgDZVIJp43NWTuwGBScCzMLVLynjERL8=
 github.com/sagernet/sing v0.0.0-20220812082120-05f9836bff8f/go.mod h1:QVsS5L/ZA2Q5UhQwLrn0Trw+msNd/NPGEhBKR/ioWiY=
 github.com/sagernet/sing v0.0.0-20220817130738-ce854cda8522/go.mod h1:QVsS5L/ZA2Q5UhQwLrn0Trw+msNd/NPGEhBKR/ioWiY=
-github.com/sagernet/sing v0.1.7-0.20230209132010-5f1ef3441c13 h1:S/+YvJCEChwnckGhzqSrE/Q2m6aVWhkt1I4Pv2yCMVw=
-github.com/sagernet/sing v0.1.7-0.20230209132010-5f1ef3441c13/go.mod h1:jt1w2u7lJQFFSGLiRrRIs5YWmx4kAPfWuOejuDW9qMk=
-github.com/sagernet/sing-dns v0.1.2-0.20230209132355-3c2e2957b455 h1:VA/j2Jg+JURgKw2C1Dw2tpjfOZwbLXRy8PJRbJS/HEU=
-github.com/sagernet/sing-dns v0.1.2-0.20230209132355-3c2e2957b455/go.mod h1:nonvn66ja+UNrQl3jzJy0EFRn15QUaCFAVXTXf6TgJ4=
-github.com/sagernet/sing-shadowsocks v0.1.1-0.20230202035033-e3123545f2f7 h1:Plup6oEiyLzY3HDqQ+QsUBzgBGdVmcsgf3t8h940z9U=
-github.com/sagernet/sing-shadowsocks v0.1.1-0.20230202035033-e3123545f2f7/go.mod h1:O5LtOs8Ivw686FqLpO0Zu+A0ROVE15VeqEK3yDRRAms=
+github.com/sagernet/sing v0.1.8-0.20230221060643-3401d210384b h1:Ji2AfGlc4j9AitobOx4k3BCj7eS5nSxL1cgaL81zvlo=
+github.com/sagernet/sing v0.1.8-0.20230221060643-3401d210384b/go.mod h1:jt1w2u7lJQFFSGLiRrRIs5YWmx4kAPfWuOejuDW9qMk=
+github.com/sagernet/sing-dns v0.1.4 h1:7VxgeoSCiiazDSaXXQVcvrTBxFpOePPq/4XdgnUDN+0=
+github.com/sagernet/sing-dns v0.1.4/go.mod h1:1+6pCa48B1AI78lD+/i/dLgpw4MwfnsSpZo0Ds8wzzk=
+github.com/sagernet/sing-shadowsocks v0.1.2-0.20230221080503-769c01d6bba9 h1:qS39eA4C7x+zhEkySbASrtmb6ebdy5v0y2M6mgkmSO0=
+github.com/sagernet/sing-shadowsocks v0.1.2-0.20230221080503-769c01d6bba9/go.mod h1:f3mHTy5shnVM9l8UocMlJgC/1G/zdj5FuEuVXhDinGU=
+github.com/sagernet/sing-shadowtls v0.0.0-20230221075551-c5ad05179260 h1:RKeyBMI5kRnno3/WGsW4HrGnZkhISQQrnRxAKXbf5Vg=
+github.com/sagernet/sing-shadowtls v0.0.0-20230221075551-c5ad05179260/go.mod h1:Kn1VUIprdkwCgkS6SXYaLmIpKzQbqBIKJBMY+RvBhYc=
 github.com/sagernet/sing-tun v0.1.1 h1:2Hg3GAyJWzQ7Ua1j74dE+mI06vaqSBO9yD4tkTjggn4=
 github.com/sagernet/sing-tun v0.1.1/go.mod h1:WzW/SkT+Nh9uJn/FIYUE2YJHYuPwfbh8sATOzU9QDGw=
-github.com/sagernet/sing-vmess v0.1.1-0.20230212211128-cb4e47dd0acb h1:oyd3w17fXNmWVYFUe17YVHJW5CLW9X2mxJFDP/IWrAM=
-github.com/sagernet/sing-vmess v0.1.1-0.20230212211128-cb4e47dd0acb/go.mod h1:9KkmnQzTL4Gvv8U2TRAH2BOITCGsGPpHtUPP5sxn5sY=
+github.com/sagernet/sing-vmess v0.1.2 h1:RbOZNAId2LrCai8epMoQXlf0XTrou0bfcw08hNBg6lM=
+github.com/sagernet/sing-vmess v0.1.2/go.mod h1:9NSj8mZTx1JIY/HF9LaYRppUsVkysIN5tEFpNZujXxY=
 github.com/sagernet/smux v0.0.0-20220831015742-e0f1988e3195 h1:5VBIbVw9q7aKbrFdT83mjkyvQ+VaRsQ6yflTepfln38=
 github.com/sagernet/smux v0.0.0-20220831015742-e0f1988e3195/go.mod h1:yedWtra8nyGJ+SyI+ziwuaGMzBatbB10P1IOOZbbSK8=
 github.com/sagernet/tfo-go v0.0.0-20230207095944-549363a7327d h1:trP/l6ZPWvQ/5Gv99Z7/t/v8iYy06akDMejxW1sznUk=
 github.com/sagernet/tfo-go v0.0.0-20230207095944-549363a7327d/go.mod h1:jk6Ii8Y3En+j2KQDLgdgQGwb3M6y7EL567jFnGYhN9g=
+github.com/sagernet/utls v0.0.0-20230220130002-c08891932056 h1:gDXi/0uYe8dA48UyUI1LM2la5QYN0IvsDvR2H2+kFnA=
+github.com/sagernet/utls v0.0.0-20230220130002-c08891932056/go.mod h1:JKQMZq/O2qnZjdrt+B57olmfgEmLtY9iiSIEYtWvoSM=
 github.com/sagernet/websocket v0.0.0-20220913015213-615516348b4e h1:7uw2njHFGE+VpWamge6o56j2RWk4omF6uLKKxMmcWvs=
 github.com/sagernet/websocket v0.0.0-20220913015213-615516348b4e/go.mod h1:45TUl8+gH4SIKr4ykREbxKWTxkDlSzFENzctB1dVRRY=
 github.com/sagernet/wireguard-go v0.0.0-20221116151939-c99467f53f2c h1:vK2wyt9aWYHHvNLWniwijBu/n4pySypiKRhN32u/JGo=
@@ -177,8 +181,8 @@ github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
 github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
-github.com/u-root/uio v0.0.0-20221213070652-c3537552635f h1:dpx1PHxYqAnXzbryJrWP1NQLzEjwcVgFLhkknuFQ7ww=
-github.com/u-root/uio v0.0.0-20221213070652-c3537552635f/go.mod h1:IogEAUBXDEwX7oR/BMmCctShYs80ql4hF0ySdzGxf7E=
+github.com/u-root/uio v0.0.0-20230215032506-9aa6f7e2d72c h1:PHoGTnweZP+KIg/8Zc6+iOesrIF5yHkpb4GBDxHm7yE=
+github.com/u-root/uio v0.0.0-20230215032506-9aa6f7e2d72c/go.mod h1:eLL9Nub3yfAho7qB0MzZizFhTU2QkLeoVsWdHtDW264=
 github.com/vishvananda/netns v0.0.0-20211101163701-50045581ed74 h1:gga7acRE695APm9hlsSMoOoE65U4/TcqNj90mc69Rlg=
 github.com/vishvananda/netns v0.0.0-20211101163701-50045581ed74/go.mod h1:DD4vA1DwXk04H54A1oHXtwZmA0grkVMdPxx/VGLCah0=
 github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=

test/shadowtls_test.go

@@ -17,17 +17,23 @@ import (
 
 func TestShadowTLS(t *testing.T) {
 	t.Run("v1", func(t *testing.T) {
-		testShadowTLS(t, 1, "")
+		testShadowTLS(t, 1, "", false)
 	})
 	t.Run("v2", func(t *testing.T) {
-		testShadowTLS(t, 2, "hello")
+		testShadowTLS(t, 2, "hello", false)
 	})
 	t.Run("v3", func(t *testing.T) {
-		testShadowTLS(t, 3, "hello")
+		testShadowTLS(t, 3, "hello", false)
+	})
+	t.Run("v2-utls", func(t *testing.T) {
+		testShadowTLS(t, 2, "hello", true)
+	})
+	t.Run("v3-utls", func(t *testing.T) {
+		testShadowTLS(t, 3, "hello", true)
 	})
 }
 
-func testShadowTLS(t *testing.T, version int, password string) {
+func testShadowTLS(t *testing.T, version int, password string, utlsEanbled bool) {
 	method := shadowaead_2022.List[0]
 	ssPassword := mkBase64(t, 16)
 	startInstance(t, option.Options{
@@ -58,6 +64,7 @@ func testShadowTLS(t *testing.T, version int, password string) {
 					},
 					Version:  version,
 					Password: password,
+					Users:    []option.ShadowTLSUser{{Password: password}},
 				},
 			},
 			{
@@ -82,9 +89,6 @@ func testShadowTLS(t *testing.T, version int, password string) {
 					DialerOptions: option.DialerOptions{
 						Detour: "detour",
 					},
-					MultiplexOptions: &option.MultiplexOptions{
-						Enabled: true,
-					},
 				},
 			},
 			{
@@ -98,6 +102,9 @@ func testShadowTLS(t *testing.T, version int, password string) {
 					TLS: &option.OutboundTLSOptions{
 						Enabled:    true,
 						ServerName: "google.com",
+						UTLS: &option.OutboundUTLSOptions{
+							Enabled: utlsEanbled,
+						},
 					},
 					Version:  version,
 					Password: password,
@@ -117,7 +124,7 @@ func testShadowTLS(t *testing.T, version int, password string) {
 			}},
 		},
 	})
-	testSuit(t, clientPort, testPort)
+	testTCP(t, clientPort, testPort)
 }
 
 func TestShadowTLSFallback(t *testing.T) {

transport/shadowtls/client.go

@@ -1,40 +0,0 @@
-package shadowtls
-
-import (
-	"github.com/sagernet/sing/common/buf"
-	"github.com/sagernet/sing/common/bufio"
-	N "github.com/sagernet/sing/common/network"
-)
-
-var _ N.VectorisedWriter = (*ClientConn)(nil)
-
-type ClientConn struct {
-	*Conn
-	hashConn *HashReadConn
-}
-
-func NewClientConn(hashConn *HashReadConn) *ClientConn {
-	return &ClientConn{NewConn(hashConn.Conn), hashConn}
-}
-
-func (c *ClientConn) Write(p []byte) (n int, err error) {
-	if c.hashConn != nil {
-		sum := c.hashConn.Sum()
-		c.hashConn = nil
-		_, err = bufio.WriteVectorised(c.Conn, [][]byte{sum, p})
-		if err == nil {
-			n = len(p)
-		}
-		return
-	}
-	return c.Conn.Write(p)
-}
-
-func (c *ClientConn) WriteVectorised(buffers []*buf.Buffer) error {
-	if c.hashConn != nil {
-		sum := c.hashConn.Sum()
-		c.hashConn = nil
-		return c.Conn.WriteVectorised(append([]*buf.Buffer{buf.As(sum)}, buffers...))
-	}
-	return c.Conn.WriteVectorised(buffers)
-}

transport/shadowtls/client_v3.go

@@ -1,294 +0,0 @@
-package shadowtls
-
-import (
-	"bytes"
-	"crypto/hmac"
-	"crypto/rand"
-	"crypto/sha1"
-	"crypto/sha256"
-	"encoding/binary"
-	"hash"
-	"io"
-	"net"
-
-	"github.com/sagernet/sing/common"
-	"github.com/sagernet/sing/common/buf"
-	"github.com/sagernet/sing/common/bufio"
-	E "github.com/sagernet/sing/common/exceptions"
-	N "github.com/sagernet/sing/common/network"
-)
-
-const (
-	tlsRandomSize    = 32
-	tlsHeaderSize    = 5
-	tlsSessionIDSize = 32
-
-	clientHello = 1
-	serverHello = 2
-
-	changeCipherSpec = 20
-	alert            = 21
-	handshake        = 22
-	applicationData  = 23
-
-	serverRandomIndex    = tlsHeaderSize + 1 + 3 + 2
-	sessionIDLengthIndex = tlsHeaderSize + 1 + 3 + 2 + tlsRandomSize
-	tlsHmacHeaderSize    = tlsHeaderSize + hmacSize
-	hmacSize             = 4
-)
-
-func generateSessionID(password string) func(clientHello []byte, sessionID []byte) error {
-	return func(clientHello []byte, sessionID []byte) error {
-		const sessionIDStart = 1 + 3 + 2 + tlsRandomSize + 1
-		if len(clientHello) < sessionIDStart+tlsSessionIDSize {
-			return E.New("unexpected client hello length")
-		}
-		_, err := rand.Read(sessionID[:tlsSessionIDSize-hmacSize])
-		if err != nil {
-			return err
-		}
-		hmacSHA1Hash := hmac.New(sha1.New, []byte(password))
-		hmacSHA1Hash.Write(clientHello[:sessionIDStart])
-		hmacSHA1Hash.Write(sessionID)
-		hmacSHA1Hash.Write(clientHello[sessionIDStart+tlsSessionIDSize:])
-		copy(sessionID[tlsSessionIDSize-hmacSize:], hmacSHA1Hash.Sum(nil)[:hmacSize])
-		return nil
-	}
-}
-
-type StreamWrapper struct {
-	net.Conn
-	password     string
-	buffer       *buf.Buffer
-	serverRandom []byte
-	readHMAC     hash.Hash
-	readHMACKey  []byte
-	authorized   bool
-}
-
-func NewStreamWrapper(conn net.Conn, password string) *StreamWrapper {
-	return &StreamWrapper{
-		Conn:     conn,
-		password: password,
-	}
-}
-
-func (w *StreamWrapper) Authorized() (bool, []byte, hash.Hash) {
-	return w.authorized, w.serverRandom, w.readHMAC
-}
-
-func (w *StreamWrapper) Read(p []byte) (n int, err error) {
-	if w.buffer != nil {
-		if !w.buffer.IsEmpty() {
-			return w.buffer.Read(p)
-		}
-		w.buffer.Release()
-		w.buffer = nil
-	}
-	var tlsHeader [tlsHeaderSize]byte
-	_, err = io.ReadFull(w.Conn, tlsHeader[:])
-	if err != nil {
-		return
-	}
-	length := int(binary.BigEndian.Uint16(tlsHeader[3:tlsHeaderSize]))
-	w.buffer = buf.NewSize(tlsHeaderSize + length)
-	common.Must1(w.buffer.Write(tlsHeader[:]))
-	_, err = w.buffer.ReadFullFrom(w.Conn, length)
-	if err != nil {
-		return
-	}
-	buffer := w.buffer.Bytes()
-	switch tlsHeader[0] {
-	case handshake:
-		if len(buffer) > serverRandomIndex+tlsRandomSize && buffer[5] == serverHello {
-			w.serverRandom = make([]byte, tlsRandomSize)
-			copy(w.serverRandom, buffer[serverRandomIndex:serverRandomIndex+tlsRandomSize])
-			w.readHMAC = hmac.New(sha1.New, []byte(w.password))
-			w.readHMAC.Write(w.serverRandom)
-			w.readHMACKey = kdf(w.password, w.serverRandom)
-		}
-	case applicationData:
-		w.authorized = false
-		if len(buffer) > tlsHmacHeaderSize && w.readHMAC != nil {
-			w.readHMAC.Write(buffer[tlsHmacHeaderSize:])
-			if hmac.Equal(w.readHMAC.Sum(nil)[:hmacSize], buffer[tlsHeaderSize:tlsHmacHeaderSize]) {
-				xorSlice(buffer[tlsHmacHeaderSize:], w.readHMACKey)
-				copy(buffer[hmacSize:], buffer[:tlsHeaderSize])
-				binary.BigEndian.PutUint16(buffer[hmacSize+3:], uint16(len(buffer)-tlsHmacHeaderSize))
-				w.buffer.Advance(hmacSize)
-				w.authorized = true
-			}
-		}
-	}
-	return w.buffer.Read(p)
-}
-
-func kdf(password string, serverRandom []byte) []byte {
-	hasher := sha256.New()
-	hasher.Write([]byte(password))
-	hasher.Write(serverRandom)
-	return hasher.Sum(nil)
-}
-
-func xorSlice(data []byte, key []byte) {
-	for i := range data {
-		data[i] ^= key[i%len(key)]
-	}
-}
-
-var _ N.VectorisedWriter = (*VerifiedConn)(nil)
-
-type VerifiedConn struct {
-	net.Conn
-	writer     N.VectorisedWriter
-	hmacAdd    hash.Hash
-	hmacVerify hash.Hash
-	hmacIgnore hash.Hash
-
-	buffer *buf.Buffer
-}
-
-func NewVerifiedConn(
-	conn net.Conn,
-	hmacAdd hash.Hash,
-	hmacVerify hash.Hash,
-	hmacIgnore hash.Hash,
-) *VerifiedConn {
-	return &VerifiedConn{
-		Conn:       conn,
-		writer:     bufio.NewVectorisedWriter(conn),
-		hmacAdd:    hmacAdd,
-		hmacVerify: hmacVerify,
-		hmacIgnore: hmacIgnore,
-	}
-}
-
-func (c *VerifiedConn) Read(b []byte) (n int, err error) {
-	if c.buffer != nil {
-		if !c.buffer.IsEmpty() {
-			return c.buffer.Read(b)
-		}
-		c.buffer.Release()
-		c.buffer = nil
-	}
-	for {
-		var tlsHeader [tlsHeaderSize]byte
-		_, err = io.ReadFull(c.Conn, tlsHeader[:])
-		if err != nil {
-			sendAlert(c.Conn)
-			return
-		}
-		length := int(binary.BigEndian.Uint16(tlsHeader[3:tlsHeaderSize]))
-		c.buffer = buf.NewSize(tlsHeaderSize + length)
-		common.Must1(c.buffer.Write(tlsHeader[:]))
-		_, err = c.buffer.ReadFullFrom(c.Conn, length)
-		if err != nil {
-			return
-		}
-		buffer := c.buffer.Bytes()
-		switch buffer[0] {
-		case alert:
-			err = E.Cause(net.ErrClosed, "remote alert")
-			return
-		case applicationData:
-			if c.hmacIgnore != nil {
-				if verifyApplicationData(buffer, c.hmacIgnore, false) {
-					c.buffer.Release()
-					c.buffer = nil
-					continue
-				} else {
-					c.hmacIgnore = nil
-				}
-			}
-			if !verifyApplicationData(buffer, c.hmacVerify, true) {
-				sendAlert(c.Conn)
-				err = E.New("application data verification failed")
-				return
-			}
-			c.buffer.Advance(tlsHmacHeaderSize)
-		default:
-			sendAlert(c.Conn)
-			err = E.New("unexpected TLS record type: ", buffer[0])
-			return
-		}
-		return c.buffer.Read(b)
-	}
-}
-
-func (c *VerifiedConn) Write(p []byte) (n int, err error) {
-	pTotal := len(p)
-	for len(p) > 0 {
-		var pWrite []byte
-		if len(p) > 16384 {
-			pWrite = p[:16384]
-			p = p[16384:]
-		} else {
-			pWrite = p
-			p = nil
-		}
-		_, err = c.write(pWrite)
-	}
-	if err == nil {
-		n = pTotal
-	}
-	return
-}
-
-func (c *VerifiedConn) write(p []byte) (n int, err error) {
-	var header [tlsHmacHeaderSize]byte
-	header[0] = applicationData
-	header[1] = 3
-	header[2] = 3
-	binary.BigEndian.PutUint16(header[3:tlsHeaderSize], hmacSize+uint16(len(p)))
-	c.hmacAdd.Write(p)
-	hmacHash := c.hmacAdd.Sum(nil)[:hmacSize]
-	c.hmacAdd.Write(hmacHash)
-	copy(header[tlsHeaderSize:], hmacHash)
-	_, err = bufio.WriteVectorised(c.writer, [][]byte{common.Dup(header[:]), p})
-	if err == nil {
-		n = len(p)
-	}
-	return
-}
-
-func (c *VerifiedConn) WriteVectorised(buffers []*buf.Buffer) error {
-	var header [tlsHmacHeaderSize]byte
-	header[0] = applicationData
-	header[1] = 3
-	header[2] = 3
-	binary.BigEndian.PutUint16(header[3:tlsHeaderSize], hmacSize+uint16(buf.LenMulti(buffers)))
-	for _, buffer := range buffers {
-		c.hmacAdd.Write(buffer.Bytes())
-	}
-	c.hmacAdd.Write(c.hmacAdd.Sum(nil)[:hmacSize])
-	copy(header[tlsHeaderSize:], c.hmacAdd.Sum(nil)[:hmacSize])
-	return c.writer.WriteVectorised(append([]*buf.Buffer{buf.As(header[:])}, buffers...))
-}
-
-func verifyApplicationData(frame []byte, hmac hash.Hash, update bool) bool {
-	if frame[1] != 3 || frame[2] != 3 || len(frame) < tlsHmacHeaderSize {
-		return false
-	}
-	hmac.Write(frame[tlsHmacHeaderSize:])
-	hmacHash := hmac.Sum(nil)[:hmacSize]
-	if update {
-		hmac.Write(hmacHash)
-	}
-	return bytes.Equal(frame[tlsHeaderSize:tlsHeaderSize+hmacSize], hmacHash)
-}
-
-func sendAlert(writer io.Writer) {
-	const recordSize = 31
-	record := [recordSize]byte{
-		alert,
-		3,
-		3,
-		0,
-		recordSize - tlsHeaderSize,
-	}
-	_, err := rand.Read(record[tlsHeaderSize:])
-	if err != nil {
-		return
-	}
-	writer.Write(record[:])
-}

transport/shadowtls/config.go

@@ -1,157 +0,0 @@
-package shadowtls
-
-import (
-	"crypto/x509"
-	"net"
-	"net/netip"
-	"os"
-
-	"github.com/sagernet/sing-box/common/tls"
-	"github.com/sagernet/sing-box/option"
-	E "github.com/sagernet/sing/common/exceptions"
-)
-
-var _ tls.Config = (*ClientTLSConfig)(nil)
-
-type ClientTLSConfig struct {
-	config *sTLSConfig
-}
-
-func NewClientTLSConfig(serverAddress string, options option.OutboundTLSOptions, password string) (*ClientTLSConfig, error) {
-	if options.ECH != nil && options.ECH.Enabled {
-		return nil, E.New("ECH is not supported in shadowtls v3")
-	} else if options.UTLS != nil && options.UTLS.Enabled {
-		return nil, E.New("UTLS is not supported in shadowtls v3")
-	}
-
-	var serverName string
-	if options.ServerName != "" {
-		serverName = options.ServerName
-	} else if serverAddress != "" {
-		if _, err := netip.ParseAddr(serverName); err != nil {
-			serverName = serverAddress
-		}
-	}
-	if serverName == "" && !options.Insecure {
-		return nil, E.New("missing server_name or insecure=true")
-	}
-
-	var tlsConfig sTLSConfig
-	tlsConfig.SessionIDGenerator = generateSessionID(password)
-	if options.DisableSNI {
-		tlsConfig.ServerName = "127.0.0.1"
-	} else {
-		tlsConfig.ServerName = serverName
-	}
-	if options.Insecure {
-		tlsConfig.InsecureSkipVerify = options.Insecure
-	} else if options.DisableSNI {
-		tlsConfig.InsecureSkipVerify = true
-		tlsConfig.VerifyConnection = func(state sTLSConnectionState) error {
-			verifyOptions := x509.VerifyOptions{
-				DNSName:       serverName,
-				Intermediates: x509.NewCertPool(),
-			}
-			for _, cert := range state.PeerCertificates[1:] {
-				verifyOptions.Intermediates.AddCert(cert)
-			}
-			_, err := state.PeerCertificates[0].Verify(verifyOptions)
-			return err
-		}
-	}
-	if len(options.ALPN) > 0 {
-		tlsConfig.NextProtos = options.ALPN
-	}
-	if options.MinVersion != "" {
-		minVersion, err := tls.ParseTLSVersion(options.MinVersion)
-		if err != nil {
-			return nil, E.Cause(err, "parse min_version")
-		}
-		tlsConfig.MinVersion = minVersion
-	}
-	if options.MaxVersion != "" {
-		maxVersion, err := tls.ParseTLSVersion(options.MaxVersion)
-		if err != nil {
-			return nil, E.Cause(err, "parse max_version")
-		}
-		tlsConfig.MaxVersion = maxVersion
-	}
-	if options.CipherSuites != nil {
-	find:
-		for _, cipherSuite := range options.CipherSuites {
-			for _, tlsCipherSuite := range sTLSCipherSuites() {
-				if cipherSuite == tlsCipherSuite.Name {
-					tlsConfig.CipherSuites = append(tlsConfig.CipherSuites, tlsCipherSuite.ID)
-					continue find
-				}
-			}
-			return nil, E.New("unknown cipher_suite: ", cipherSuite)
-		}
-	}
-	var certificate []byte
-	if options.Certificate != "" {
-		certificate = []byte(options.Certificate)
-	} else if options.CertificatePath != "" {
-		content, err := os.ReadFile(options.CertificatePath)
-		if err != nil {
-			return nil, E.Cause(err, "read certificate")
-		}
-		certificate = content
-	}
-	if len(certificate) > 0 {
-		certPool := x509.NewCertPool()
-		if !certPool.AppendCertsFromPEM(certificate) {
-			return nil, E.New("failed to parse certificate:\n\n", certificate)
-		}
-		tlsConfig.RootCAs = certPool
-	}
-	return &ClientTLSConfig{&tlsConfig}, nil
-}
-
-func (c *ClientTLSConfig) ServerName() string {
-	return c.config.ServerName
-}
-
-func (c *ClientTLSConfig) SetServerName(serverName string) {
-	c.config.ServerName = serverName
-}
-
-func (c *ClientTLSConfig) NextProtos() []string {
-	return c.config.NextProtos
-}
-
-func (c *ClientTLSConfig) SetNextProtos(nextProto []string) {
-	c.config.NextProtos = nextProto
-}
-
-func (c *ClientTLSConfig) Config() (*tls.STDConfig, error) {
-	return nil, E.New("unsupported usage for ShadowTLS")
-}
-
-func (c *ClientTLSConfig) Client(conn net.Conn) tls.Conn {
-	return &shadowTLSConnWrapper{sTLSClient(conn, c.config)}
-}
-
-func (c *ClientTLSConfig) Clone() tls.Config {
-	return &ClientTLSConfig{c.config.Clone()}
-}
-
-type shadowTLSConnWrapper struct {
-	*sTLSConn
-}
-
-func (c *shadowTLSConnWrapper) ConnectionState() tls.ConnectionState {
-	state := c.sTLSConn.ConnectionState()
-	return tls.ConnectionState{
-		Version:                     state.Version,
-		HandshakeComplete:           state.HandshakeComplete,
-		DidResume:                   state.DidResume,
-		CipherSuite:                 state.CipherSuite,
-		NegotiatedProtocol:          state.NegotiatedProtocol,
-		ServerName:                  state.ServerName,
-		PeerCertificates:            state.PeerCertificates,
-		VerifiedChains:              state.VerifiedChains,
-		SignedCertificateTimestamps: state.SignedCertificateTimestamps,
-		OCSPResponse:                state.OCSPResponse,
-	}
-}

transport/shadowtls/config_119.go

@@ -1,16 +0,0 @@
-//go:build !go1.20
-
-package shadowtls
-
-import sTLS "github.com/sagernet/sing-box/transport/shadowtls/tls_go119"
-
-type (
-	sTLSConfig          = sTLS.Config
-	sTLSConnectionState = sTLS.ConnectionState
-	sTLSConn            = sTLS.Conn
-)
-
-var (
-	sTLSCipherSuites = sTLS.CipherSuites
-	sTLSClient       = sTLS.Client
-)

transport/shadowtls/config_120.go

@@ -1,16 +0,0 @@
-//go:build go1.20
-
-package shadowtls
-
-import sTLS "github.com/sagernet/sing-box/transport/shadowtls/tls"
-
-type (
-	sTLSConfig          = sTLS.Config
-	sTLSConnectionState = sTLS.ConnectionState
-	sTLSConn            = sTLS.Conn
-)
-
-var (
-	sTLSCipherSuites = sTLS.CipherSuites
-	sTLSClient       = sTLS.Client
-)

transport/shadowtls/conn.go

@@ -1,97 +0,0 @@
-package shadowtls
-
-import (
-	"encoding/binary"
-	"io"
-	"net"
-
-	"github.com/sagernet/sing-box/common/tls"
-	"github.com/sagernet/sing/common"
-	"github.com/sagernet/sing/common/buf"
-	"github.com/sagernet/sing/common/bufio"
-	E "github.com/sagernet/sing/common/exceptions"
-	N "github.com/sagernet/sing/common/network"
-)
-
-var _ N.VectorisedWriter = (*Conn)(nil)
-
-type Conn struct {
-	net.Conn
-	writer        N.VectorisedWriter
-	readRemaining int
-}
-
-func NewConn(conn net.Conn) *Conn {
-	return &Conn{
-		Conn:   conn,
-		writer: bufio.NewVectorisedWriter(conn),
-	}
-}
-
-func (c *Conn) Read(p []byte) (n int, err error) {
-	if c.readRemaining > 0 {
-		if len(p) > c.readRemaining {
-			p = p[:c.readRemaining]
-		}
-		n, err = c.Conn.Read(p)
-		c.readRemaining -= n
-		return
-	}
-	var tlsHeader [5]byte
-	_, err = io.ReadFull(c.Conn, common.Dup(tlsHeader[:]))
-	if err != nil {
-		return
-	}
-	length := int(binary.BigEndian.Uint16(tlsHeader[3:5]))
-	if tlsHeader[0] != 23 {
-		return 0, E.New("unexpected TLS record type: ", tlsHeader[0])
-	}
-	readLen := len(p)
-	if readLen > length {
-		readLen = length
-	}
-	n, err = c.Conn.Read(p[:readLen])
-	if err != nil {
-		return
-	}
-	c.readRemaining = length - n
-	return
-}
-
-func (c *Conn) Write(p []byte) (n int, err error) {
-	var header [5]byte
-	defer common.KeepAlive(header)
-	header[0] = 23
-	for len(p) > 16384 {
-		binary.BigEndian.PutUint16(header[1:3], tls.VersionTLS12)
-		binary.BigEndian.PutUint16(header[3:5], uint16(16384))
-		_, err = bufio.WriteVectorised(c.writer, [][]byte{common.Dup(header[:]), p[:16384]})
-		common.KeepAlive(header)
-		if err != nil {
-			return
-		}
-		n += 16384
-		p = p[16384:]
-	}
-	binary.BigEndian.PutUint16(header[1:3], tls.VersionTLS12)
-	binary.BigEndian.PutUint16(header[3:5], uint16(len(p)))
-	_, err = bufio.WriteVectorised(c.writer, [][]byte{common.Dup(header[:]), p})
-	if err == nil {
-		n += len(p)
-	}
-	return
-}
-
-func (c *Conn) WriteVectorised(buffers []*buf.Buffer) error {
-	var header [5]byte
-	defer common.KeepAlive(header)
-	header[0] = 23
-	dataLen := buf.LenMulti(buffers)
-	binary.BigEndian.PutUint16(header[1:3], tls.VersionTLS12)
-	binary.BigEndian.PutUint16(header[3:5], uint16(dataLen))
-	return c.writer.WriteVectorised(append([]*buf.Buffer{buf.As(header[:])}, buffers...))
-}
-
-func (c *Conn) Upstream() any {
-	return c.Conn
-}

transport/shadowtls/hash.go

@@ -1,74 +0,0 @@
-package shadowtls
-
-import (
-	"crypto/hmac"
-	"crypto/sha1"
-	"hash"
-	"net"
-)
-
-type HashReadConn struct {
-	net.Conn
-	hmac hash.Hash
-}
-
-func NewHashReadConn(conn net.Conn, password string) *HashReadConn {
-	return &HashReadConn{
-		conn,
-		hmac.New(sha1.New, []byte(password)),
-	}
-}
-
-func (c *HashReadConn) Read(b []byte) (n int, err error) {
-	n, err = c.Conn.Read(b)
-	if err != nil {
-		return
-	}
-	_, err = c.hmac.Write(b[:n])
-	return
-}
-
-func (c *HashReadConn) Sum() []byte {
-	return c.hmac.Sum(nil)[:8]
-}
-
-type HashWriteConn struct {
-	net.Conn
-	hmac       hash.Hash
-	hasContent bool
-	lastSum    []byte
-}
-
-func NewHashWriteConn(conn net.Conn, password string) *HashWriteConn {
-	return &HashWriteConn{
-		Conn: conn,
-		hmac: hmac.New(sha1.New, []byte(password)),
-	}
-}
-
-func (c *HashWriteConn) Write(p []byte) (n int, err error) {
-	if c.hmac != nil {
-		if c.hasContent {
-			c.lastSum = c.Sum()
-		}
-		c.hmac.Write(p)
-		c.hasContent = true
-	}
-	return c.Conn.Write(p)
-}
-
-func (c *HashWriteConn) Sum() []byte {
-	return c.hmac.Sum(nil)[:8]
-}
-
-func (c *HashWriteConn) LastSum() []byte {
-	return c.lastSum
-}
-
-func (c *HashWriteConn) Fallback() {
-	c.hmac = nil
-}
-
-func (c *HashWriteConn) HasContent() bool {
-	return c.hasContent
-}

transport/shadowtls/server_v3.go

@@ -1,181 +0,0 @@
-package shadowtls
-
-import (
-	"bytes"
-	"crypto/hmac"
-	"crypto/sha1"
-	"encoding/binary"
-	"hash"
-	"io"
-	"net"
-
-	"github.com/sagernet/sing/common"
-	"github.com/sagernet/sing/common/buf"
-	"github.com/sagernet/sing/common/bufio"
-	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/rw"
-)
-
-func ExtractFrame(conn net.Conn) (*buf.Buffer, error) {
-	var tlsHeader [tlsHeaderSize]byte
-	_, err := io.ReadFull(conn, tlsHeader[:])
-	if err != nil {
-		return nil, err
-	}
-	length := int(binary.BigEndian.Uint16(tlsHeader[3:]))
-	buffer := buf.NewSize(tlsHeaderSize + length)
-	common.Must1(buffer.Write(tlsHeader[:]))
-	_, err = buffer.ReadFullFrom(conn, length)
-	if err != nil {
-		buffer.Release()
-	}
-	return buffer, err
-}
-
-func VerifyClientHello(frame []byte, password string) error {
-	const minLen = tlsHeaderSize + 1 + 3 + 2 + tlsRandomSize + 1 + tlsSessionIDSize
-	const hmacIndex = sessionIDLengthIndex + 1 + tlsSessionIDSize - hmacSize
-	if len(frame) < minLen {
-		return io.ErrUnexpectedEOF
-	} else if frame[0] != handshake {
-		return E.New("unexpected record type")
-	} else if frame[5] != clientHello {
-		return E.New("unexpected handshake type")
-	} else if frame[sessionIDLengthIndex] != tlsSessionIDSize {
-		return E.New("unexpected session id length")
-	}
-	hmacSHA1Hash := hmac.New(sha1.New, []byte(password))
-	hmacSHA1Hash.Write(frame[tlsHeaderSize:hmacIndex])
-	hmacSHA1Hash.Write(rw.ZeroBytes[:4])
-	hmacSHA1Hash.Write(frame[hmacIndex+hmacSize:])
-	if !hmac.Equal(frame[hmacIndex:hmacIndex+hmacSize], hmacSHA1Hash.Sum(nil)[:hmacSize]) {
-		return E.New("hmac mismatch")
-	}
-	return nil
-}
-
-func ExtractServerRandom(frame []byte) []byte {
-	const minLen = tlsHeaderSize + 1 + 3 + 2 + tlsRandomSize
-
-	if len(frame) < minLen || frame[0] != handshake || frame[5] != serverHello {
-		return nil
-	}
-
-	serverRandom := make([]byte, tlsRandomSize)
-	copy(serverRandom, frame[serverRandomIndex:serverRandomIndex+tlsRandomSize])
-	return serverRandom
-}
-
-func IsServerHelloSupportTLS13(frame []byte) bool {
-	if len(frame) < sessionIDLengthIndex {
-		return false
-	}
-
-	reader := bytes.NewReader(frame[sessionIDLengthIndex:])
-
-	var sessionIdLength uint8
-	err := binary.Read(reader, binary.BigEndian, &sessionIdLength)
-	if err != nil {
-		return false
-	}
-	_, err = io.CopyN(io.Discard, reader, int64(sessionIdLength))
-	if err != nil {
-		return false
-	}
-
-	_, err = io.CopyN(io.Discard, reader, 3)
-	if err != nil {
-		return false
-	}
-
-	var extensionListLength uint16
-	err = binary.Read(reader, binary.BigEndian, &extensionListLength)
-	if err != nil {
-		return false
-	}
-	for i := uint16(0); i < extensionListLength; i++ {
-		var extensionType uint16
-		err = binary.Read(reader, binary.BigEndian, &extensionType)
-		if err != nil {
-			return false
-		}
-		var extensionLength uint16
-		err = binary.Read(reader, binary.BigEndian, &extensionLength)
-		if err != nil {
-			return false
-		}
-		if extensionType != 43 {
-			_, err = io.CopyN(io.Discard, reader, int64(extensionLength))
-			if err != nil {
-				return false
-			}
-			continue
-		}
-		if extensionLength != 2 {
-			return false
-		}
-		var extensionValue uint16
-		err = binary.Read(reader, binary.BigEndian, &extensionValue)
-		if err != nil {
-			return false
-		}
-		return extensionValue == 0x0304
-	}
-	return false
-}
-
-func CopyByFrameUntilHMACMatches(conn net.Conn, handshakeConn net.Conn, hmacVerify hash.Hash, hmacReset func()) (*buf.Buffer, error) {
-	for {
-		frameBuffer, err := ExtractFrame(conn)
-		if err != nil {
-			return nil, E.Cause(err, "read client record")
-		}
-		frame := frameBuffer.Bytes()
-		if len(frame) > tlsHmacHeaderSize && frame[0] == applicationData {
-			hmacReset()
-			hmacVerify.Write(frame[tlsHmacHeaderSize:])
-			hmacHash := hmacVerify.Sum(nil)[:4]
-			if bytes.Equal(hmacHash, frame[tlsHeaderSize:tlsHmacHeaderSize]) {
-				hmacReset()
-				hmacVerify.Write(frame[tlsHmacHeaderSize:])
-				hmacVerify.Write(frame[tlsHeaderSize:tlsHmacHeaderSize])
-				frameBuffer.Advance(tlsHmacHeaderSize)
-				return frameBuffer, nil
-			}
-		}
-		_, err = handshakeConn.Write(frame)
-		frameBuffer.Release()
-		if err != nil {
-			return nil, E.Cause(err, "write clint frame")
-		}
-	}
-}
-
-func CopyByFrameWithModification(conn net.Conn, handshakeConn net.Conn, password string, serverRandom []byte, hmacWrite hash.Hash) error {
-	writeKey := kdf(password, serverRandom)
-	writer := bufio.NewVectorisedWriter(handshakeConn)
-	for {
-		frameBuffer, err := ExtractFrame(conn)
-		if err != nil {
-			return E.Cause(err, "read server record")
-		}
-		frame := frameBuffer.Bytes()
-		if frame[0] == applicationData {
-			xorSlice(frame[tlsHeaderSize:], writeKey)
-			hmacWrite.Write(frame[tlsHeaderSize:])
-			binary.BigEndian.PutUint16(frame[3:], uint16(len(frame)-tlsHeaderSize+hmacSize))
-			hmacHash := hmacWrite.Sum(nil)[:4]
-			_, err = bufio.WriteVectorised(writer, [][]byte{frame[:tlsHeaderSize], hmacHash, frame[tlsHeaderSize:]})
-			frameBuffer.Release()
-			if err != nil {
-				return E.Cause(err, "write modified server frame")
-			}
-		} else {
-			_, err = handshakeConn.Write(frame)
-			frameBuffer.Release()
-			if err != nil {
-				return E.Cause(err, "write server frame")
-			}
-		}
-	}
-}

transport/shadowtls/tls/README.md

@@ -1,5 +0,0 @@
-# tls
-
-crypto/tls fork for shadowtls v3
-
-version: go1.20.0

transport/shadowtls/tls/alert.go

@@ -1,99 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package tls
-
-import "strconv"
-
-type alert uint8
-
-const (
-	// alert level
-	alertLevelWarning = 1
-	alertLevelError   = 2
-)
-
-const (
-	alertCloseNotify                  alert = 0
-	alertUnexpectedMessage            alert = 10
-	alertBadRecordMAC                 alert = 20
-	alertDecryptionFailed             alert = 21
-	alertRecordOverflow               alert = 22
-	alertDecompressionFailure         alert = 30
-	alertHandshakeFailure             alert = 40
-	alertBadCertificate               alert = 42
-	alertUnsupportedCertificate       alert = 43
-	alertCertificateRevoked           alert = 44
-	alertCertificateExpired           alert = 45
-	alertCertificateUnknown           alert = 46
-	alertIllegalParameter             alert = 47
-	alertUnknownCA                    alert = 48
-	alertAccessDenied                 alert = 49
-	alertDecodeError                  alert = 50
-	alertDecryptError                 alert = 51
-	alertExportRestriction            alert = 60
-	alertProtocolVersion              alert = 70
-	alertInsufficientSecurity         alert = 71
-	alertInternalError                alert = 80
-	alertInappropriateFallback        alert = 86
-	alertUserCanceled                 alert = 90
-	alertNoRenegotiation              alert = 100
-	alertMissingExtension             alert = 109
-	alertUnsupportedExtension         alert = 110
-	alertCertificateUnobtainable      alert = 111
-	alertUnrecognizedName             alert = 112
-	alertBadCertificateStatusResponse alert = 113
-	alertBadCertificateHashValue      alert = 114
-	alertUnknownPSKIdentity           alert = 115
-	alertCertificateRequired          alert = 116
-	alertNoApplicationProtocol        alert = 120
-)
-
-var alertText = map[alert]string{
-	alertCloseNotify:                  "close notify",
-	alertUnexpectedMessage:            "unexpected message",
-	alertBadRecordMAC:                 "bad record MAC",
-	alertDecryptionFailed:             "decryption failed",
-	alertRecordOverflow:               "record overflow",
-	alertDecompressionFailure:         "decompression failure",
-	alertHandshakeFailure:             "handshake failure",
-	alertBadCertificate:               "bad certificate",
-	alertUnsupportedCertificate:       "unsupported certificate",
-	alertCertificateRevoked:           "revoked certificate",
-	alertCertificateExpired:           "expired certificate",
-	alertCertificateUnknown:           "unknown certificate",
-	alertIllegalParameter:             "illegal parameter",
-	alertUnknownCA:                    "unknown certificate authority",
-	alertAccessDenied:                 "access denied",
-	alertDecodeError:                  "error decoding message",
-	alertDecryptError:                 "error decrypting message",
-	alertExportRestriction:            "export restriction",
-	alertProtocolVersion:              "protocol version not supported",
-	alertInsufficientSecurity:         "insufficient security level",
-	alertInternalError:                "internal error",
-	alertInappropriateFallback:        "inappropriate fallback",
-	alertUserCanceled:                 "user canceled",
-	alertNoRenegotiation:              "no renegotiation",
-	alertMissingExtension:             "missing extension",
-	alertUnsupportedExtension:         "unsupported extension",
-	alertCertificateUnobtainable:      "certificate unobtainable",
-	alertUnrecognizedName:             "unrecognized name",
-	alertBadCertificateStatusResponse: "bad certificate status response",
-	alertBadCertificateHashValue:      "bad certificate hash value",
-	alertUnknownPSKIdentity:           "unknown PSK identity",
-	alertCertificateRequired:          "certificate required",
-	alertNoApplicationProtocol:        "no application protocol",
-}
-
-func (e alert) String() string {
-	s, ok := alertText[e]
-	if ok {
-		return "tls: " + s
-	}
-	return "tls: alert(" + strconv.Itoa(int(e)) + ")"
-}
-
-func (e alert) Error() string {
-	return e.String()
-}

transport/shadowtls/tls/auth.go

@@ -1,293 +0,0 @@
-// Copyright 2017 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package tls
-
-import (
-	"bytes"
-	"crypto"
-	"crypto/ecdsa"
-	"crypto/ed25519"
-	"crypto/elliptic"
-	"crypto/rsa"
-	"errors"
-	"fmt"
-	"hash"
-	"io"
-)
-
-// verifyHandshakeSignature verifies a signature against pre-hashed
-// (if required) handshake contents.
-func verifyHandshakeSignature(sigType uint8, pubkey crypto.PublicKey, hashFunc crypto.Hash, signed, sig []byte) error {
-	switch sigType {
-	case signatureECDSA:
-		pubKey, ok := pubkey.(*ecdsa.PublicKey)
-		if !ok {
-			return fmt.Errorf("expected an ECDSA public key, got %T", pubkey)
-		}
-		if !ecdsa.VerifyASN1(pubKey, signed, sig) {
-			return errors.New("ECDSA verification failure")
-		}
-	case signatureEd25519:
-		pubKey, ok := pubkey.(ed25519.PublicKey)
-		if !ok {
-			return fmt.Errorf("expected an Ed25519 public key, got %T", pubkey)
-		}
-		if !ed25519.Verify(pubKey, signed, sig) {
-			return errors.New("Ed25519 verification failure")
-		}
-	case signaturePKCS1v15:
-		pubKey, ok := pubkey.(*rsa.PublicKey)
-		if !ok {
-			return fmt.Errorf("expected an RSA public key, got %T", pubkey)
-		}
-		if err := rsa.VerifyPKCS1v15(pubKey, hashFunc, signed, sig); err != nil {
-			return err
-		}
-	case signatureRSAPSS:
-		pubKey, ok := pubkey.(*rsa.PublicKey)
-		if !ok {
-			return fmt.Errorf("expected an RSA public key, got %T", pubkey)
-		}
-		signOpts := &rsa.PSSOptions{SaltLength: rsa.PSSSaltLengthEqualsHash}
-		if err := rsa.VerifyPSS(pubKey, hashFunc, signed, sig, signOpts); err != nil {
-			return err
-		}
-	default:
-		return errors.New("internal error: unknown signature type")
-	}
-	return nil
-}
-
-const (
-	serverSignatureContext = "TLS 1.3, server CertificateVerify\x00"
-	clientSignatureContext = "TLS 1.3, client CertificateVerify\x00"
-)
-
-var signaturePadding = []byte{
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-}
-
-// signedMessage returns the pre-hashed (if necessary) message to be signed by
-// certificate keys in TLS 1.3. See RFC 8446, Section 4.4.3.
-func signedMessage(sigHash crypto.Hash, context string, transcript hash.Hash) []byte {
-	if sigHash == directSigning {
-		b := &bytes.Buffer{}
-		b.Write(signaturePadding)
-		io.WriteString(b, context)
-		b.Write(transcript.Sum(nil))
-		return b.Bytes()
-	}
-	h := sigHash.New()
-	h.Write(signaturePadding)
-	io.WriteString(h, context)
-	h.Write(transcript.Sum(nil))
-	return h.Sum(nil)
-}
-
-// typeAndHashFromSignatureScheme returns the corresponding signature type and
-// crypto.Hash for a given TLS SignatureScheme.
-func typeAndHashFromSignatureScheme(signatureAlgorithm SignatureScheme) (sigType uint8, hash crypto.Hash, err error) {
-	switch signatureAlgorithm {
-	case PKCS1WithSHA1, PKCS1WithSHA256, PKCS1WithSHA384, PKCS1WithSHA512:
-		sigType = signaturePKCS1v15
-	case PSSWithSHA256, PSSWithSHA384, PSSWithSHA512:
-		sigType = signatureRSAPSS
-	case ECDSAWithSHA1, ECDSAWithP256AndSHA256, ECDSAWithP384AndSHA384, ECDSAWithP521AndSHA512:
-		sigType = signatureECDSA
-	case Ed25519:
-		sigType = signatureEd25519
-	default:
-		return 0, 0, fmt.Errorf("unsupported signature algorithm: %v", signatureAlgorithm)
-	}
-	switch signatureAlgorithm {
-	case PKCS1WithSHA1, ECDSAWithSHA1:
-		hash = crypto.SHA1
-	case PKCS1WithSHA256, PSSWithSHA256, ECDSAWithP256AndSHA256:
-		hash = crypto.SHA256
-	case PKCS1WithSHA384, PSSWithSHA384, ECDSAWithP384AndSHA384:
-		hash = crypto.SHA384
-	case PKCS1WithSHA512, PSSWithSHA512, ECDSAWithP521AndSHA512:
-		hash = crypto.SHA512
-	case Ed25519:
-		hash = directSigning
-	default:
-		return 0, 0, fmt.Errorf("unsupported signature algorithm: %v", signatureAlgorithm)
-	}
-	return sigType, hash, nil
-}
-
-// legacyTypeAndHashFromPublicKey returns the fixed signature type and crypto.Hash for
-// a given public key used with TLS 1.0 and 1.1, before the introduction of
-// signature algorithm negotiation.
-func legacyTypeAndHashFromPublicKey(pub crypto.PublicKey) (sigType uint8, hash crypto.Hash, err error) {
-	switch pub.(type) {
-	case *rsa.PublicKey:
-		return signaturePKCS1v15, crypto.MD5SHA1, nil
-	case *ecdsa.PublicKey:
-		return signatureECDSA, crypto.SHA1, nil
-	case ed25519.PublicKey:
-		// RFC 8422 specifies support for Ed25519 in TLS 1.0 and 1.1,
-		// but it requires holding on to a handshake transcript to do a
-		// full signature, and not even OpenSSL bothers with the
-		// complexity, so we can't even test it properly.
-		return 0, 0, fmt.Errorf("tls: Ed25519 public keys are not supported before TLS 1.2")
-	default:
-		return 0, 0, fmt.Errorf("tls: unsupported public key: %T", pub)
-	}
-}
-
-var rsaSignatureSchemes = []struct {
-	scheme          SignatureScheme
-	minModulusBytes int
-	maxVersion      uint16
-}{
-	// RSA-PSS is used with PSSSaltLengthEqualsHash, and requires
-	//    emLen >= hLen + sLen + 2
-	{PSSWithSHA256, crypto.SHA256.Size()*2 + 2, VersionTLS13},
-	{PSSWithSHA384, crypto.SHA384.Size()*2 + 2, VersionTLS13},
-	{PSSWithSHA512, crypto.SHA512.Size()*2 + 2, VersionTLS13},
-	// PKCS #1 v1.5 uses prefixes from hashPrefixes in crypto/rsa, and requires
-	//    emLen >= len(prefix) + hLen + 11
-	// TLS 1.3 dropped support for PKCS #1 v1.5 in favor of RSA-PSS.
-	{PKCS1WithSHA256, 19 + crypto.SHA256.Size() + 11, VersionTLS12},
-	{PKCS1WithSHA384, 19 + crypto.SHA384.Size() + 11, VersionTLS12},
-	{PKCS1WithSHA512, 19 + crypto.SHA512.Size() + 11, VersionTLS12},
-	{PKCS1WithSHA1, 15 + crypto.SHA1.Size() + 11, VersionTLS12},
-}
-
-// signatureSchemesForCertificate returns the list of supported SignatureSchemes
-// for a given certificate, based on the public key and the protocol version,
-// and optionally filtered by its explicit SupportedSignatureAlgorithms.
-//
-// This function must be kept in sync with supportedSignatureAlgorithms.
-// FIPS filtering is applied in the caller, selectSignatureScheme.
-func signatureSchemesForCertificate(version uint16, cert *Certificate) []SignatureScheme {
-	priv, ok := cert.PrivateKey.(crypto.Signer)
-	if !ok {
-		return nil
-	}
-
-	var sigAlgs []SignatureScheme
-	switch pub := priv.Public().(type) {
-	case *ecdsa.PublicKey:
-		if version != VersionTLS13 {
-			// In TLS 1.2 and earlier, ECDSA algorithms are not
-			// constrained to a single curve.
-			sigAlgs = []SignatureScheme{
-				ECDSAWithP256AndSHA256,
-				ECDSAWithP384AndSHA384,
-				ECDSAWithP521AndSHA512,
-				ECDSAWithSHA1,
-			}
-			break
-		}
-		switch pub.Curve {
-		case elliptic.P256():
-			sigAlgs = []SignatureScheme{ECDSAWithP256AndSHA256}
-		case elliptic.P384():
-			sigAlgs = []SignatureScheme{ECDSAWithP384AndSHA384}
-		case elliptic.P521():
-			sigAlgs = []SignatureScheme{ECDSAWithP521AndSHA512}
-		default:
-			return nil
-		}
-	case *rsa.PublicKey:
-		size := pub.Size()
-		sigAlgs = make([]SignatureScheme, 0, len(rsaSignatureSchemes))
-		for _, candidate := range rsaSignatureSchemes {
-			if size >= candidate.minModulusBytes && version <= candidate.maxVersion {
-				sigAlgs = append(sigAlgs, candidate.scheme)
-			}
-		}
-	case ed25519.PublicKey:
-		sigAlgs = []SignatureScheme{Ed25519}
-	default:
-		return nil
-	}
-
-	if cert.SupportedSignatureAlgorithms != nil {
-		var filteredSigAlgs []SignatureScheme
-		for _, sigAlg := range sigAlgs {
-			if isSupportedSignatureAlgorithm(sigAlg, cert.SupportedSignatureAlgorithms) {
-				filteredSigAlgs = append(filteredSigAlgs, sigAlg)
-			}
-		}
-		return filteredSigAlgs
-	}
-	return sigAlgs
-}
-
-// selectSignatureScheme picks a SignatureScheme from the peer's preference list
-// that works with the selected certificate. It's only called for protocol
-// versions that support signature algorithms, so TLS 1.2 and 1.3.
-func selectSignatureScheme(vers uint16, c *Certificate, peerAlgs []SignatureScheme) (SignatureScheme, error) {
-	supportedAlgs := signatureSchemesForCertificate(vers, c)
-	if len(supportedAlgs) == 0 {
-		return 0, unsupportedCertificateError(c)
-	}
-	if len(peerAlgs) == 0 && vers == VersionTLS12 {
-		// For TLS 1.2, if the client didn't send signature_algorithms then we
-		// can assume that it supports SHA1. See RFC 5246, Section 7.4.1.4.1.
-		peerAlgs = []SignatureScheme{PKCS1WithSHA1, ECDSAWithSHA1}
-	}
-	// Pick signature scheme in the peer's preference order, as our
-	// preference order is not configurable.
-	for _, preferredAlg := range peerAlgs {
-		if needFIPS() && !isSupportedSignatureAlgorithm(preferredAlg, fipsSupportedSignatureAlgorithms) {
-			continue
-		}
-		if isSupportedSignatureAlgorithm(preferredAlg, supportedAlgs) {
-			return preferredAlg, nil
-		}
-	}
-	return 0, errors.New("tls: peer doesn't support any of the certificate's signature algorithms")
-}
-
-// unsupportedCertificateError returns a helpful error for certificates with
-// an unsupported private key.
-func unsupportedCertificateError(cert *Certificate) error {
-	switch cert.PrivateKey.(type) {
-	case rsa.PrivateKey, ecdsa.PrivateKey:
-		return fmt.Errorf("tls: unsupported certificate: private key is %T, expected *%T",
-			cert.PrivateKey, cert.PrivateKey)
-	case *ed25519.PrivateKey:
-		return fmt.Errorf("tls: unsupported certificate: private key is *ed25519.PrivateKey, expected ed25519.PrivateKey")
-	}
-
-	signer, ok := cert.PrivateKey.(crypto.Signer)
-	if !ok {
-		return fmt.Errorf("tls: certificate private key (%T) does not implement crypto.Signer",
-			cert.PrivateKey)
-	}
-
-	switch pub := signer.Public().(type) {
-	case *ecdsa.PublicKey:
-		switch pub.Curve {
-		case elliptic.P256():
-		case elliptic.P384():
-		case elliptic.P521():
-		default:
-			return fmt.Errorf("tls: unsupported certificate curve (%s)", pub.Curve.Params().Name)
-		}
-	case *rsa.PublicKey:
-		return fmt.Errorf("tls: certificate RSA key size too small for supported signature algorithms")
-	case ed25519.PublicKey:
-	default:
-		return fmt.Errorf("tls: unsupported certificate key (%T)", pub)
-	}
-
-	if cert.SupportedSignatureAlgorithms != nil {
-		return fmt.Errorf("tls: peer doesn't support the certificate custom signature algorithms")
-	}
-
-	return fmt.Errorf("tls: internal error: unsupported key (%T)", cert.PrivateKey)
-}

transport/shadowtls/tls/boring.go

@@ -1,98 +0,0 @@
-// Copyright 2017 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build boringcrypto
-
-package tls
-
-import (
-	"crypto/internal/boring/fipstls"
-)
-
-// needFIPS returns fipstls.Required(); it avoids a new import in common.go.
-func needFIPS() bool {
-	return fipstls.Required()
-}
-
-// fipsMinVersion replaces c.minVersion in FIPS-only mode.
-func fipsMinVersion(c *Config) uint16 {
-	// FIPS requires TLS 1.2.
-	return VersionTLS12
-}
-
-// fipsMaxVersion replaces c.maxVersion in FIPS-only mode.
-func fipsMaxVersion(c *Config) uint16 {
-	// FIPS requires TLS 1.2.
-	return VersionTLS12
-}
-
-// default defaultFIPSCurvePreferences is the FIPS-allowed curves,
-// in preference order (most preferable first).
-var defaultFIPSCurvePreferences = []CurveID{CurveP256, CurveP384, CurveP521}
-
-// fipsCurvePreferences replaces c.curvePreferences in FIPS-only mode.
-func fipsCurvePreferences(c *Config) []CurveID {
-	if c == nil || len(c.CurvePreferences) == 0 {
-		return defaultFIPSCurvePreferences
-	}
-	var list []CurveID
-	for _, id := range c.CurvePreferences {
-		for _, allowed := range defaultFIPSCurvePreferences {
-			if id == allowed {
-				list = append(list, id)
-				break
-			}
-		}
-	}
-	return list
-}
-
-// defaultCipherSuitesFIPS are the FIPS-allowed cipher suites.
-var defaultCipherSuitesFIPS = []uint16{
-	TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
-	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
-	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
-	TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
-	TLS_RSA_WITH_AES_128_GCM_SHA256,
-	TLS_RSA_WITH_AES_256_GCM_SHA384,
-}
-
-// fipsCipherSuites replaces c.cipherSuites in FIPS-only mode.
-func fipsCipherSuites(c *Config) []uint16 {
-	if c == nil || c.CipherSuites == nil {
-		return defaultCipherSuitesFIPS
-	}
-	list := make([]uint16, 0, len(defaultCipherSuitesFIPS))
-	for _, id := range c.CipherSuites {
-		for _, allowed := range defaultCipherSuitesFIPS {
-			if id == allowed {
-				list = append(list, id)
-				break
-			}
-		}
-	}
-	return list
-}
-
-// fipsSupportedSignatureAlgorithms currently are a subset of
-// defaultSupportedSignatureAlgorithms without Ed25519 and SHA-1.
-var fipsSupportedSignatureAlgorithms = []SignatureScheme{
-	PSSWithSHA256,
-	PSSWithSHA384,
-	PSSWithSHA512,
-	PKCS1WithSHA256,
-	ECDSAWithP256AndSHA256,
-	PKCS1WithSHA384,
-	ECDSAWithP384AndSHA384,
-	PKCS1WithSHA512,
-	ECDSAWithP521AndSHA512,
-}
-
-// supportedSignatureAlgorithms returns the supported signature algorithms.
-func supportedSignatureAlgorithms() []SignatureScheme {
-	if !needFIPS() {
-		return defaultSupportedSignatureAlgorithms
-	}
-	return fipsSupportedSignatureAlgorithms
-}

transport/shadowtls/tls/cache.go

@@ -1,95 +0,0 @@
-// Copyright 2022 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package tls
-
-import (
-	"crypto/x509"
-	"runtime"
-	"sync"
-	"sync/atomic"
-)
-
-type cacheEntry struct {
-	refs atomic.Int64
-	cert *x509.Certificate
-}
-
-// certCache implements an intern table for reference counted x509.Certificates,
-// implemented in a similar fashion to BoringSSL's CRYPTO_BUFFER_POOL. This
-// allows for a single x509.Certificate to be kept in memory and referenced from
-// multiple Conns. Returned references should not be mutated by callers. Certificates
-// are still safe to use after they are removed from the cache.
-//
-// Certificates are returned wrapped in a activeCert struct that should be held by
-// the caller. When references to the activeCert are freed, the number of references
-// to the certificate in the cache is decremented. Once the number of references
-// reaches zero, the entry is evicted from the cache.
-//
-// The main difference between this implementation and CRYPTO_BUFFER_POOL is that
-// CRYPTO_BUFFER_POOL is a more  generic structure which supports blobs of data,
-// rather than specific structures. Since we only care about x509.Certificates,
-// certCache is implemented as a specific cache, rather than a generic one.
-//
-// See https://boringssl.googlesource.com/boringssl/+/master/include/openssl/pool.h
-// and https://boringssl.googlesource.com/boringssl/+/master/crypto/pool/pool.c
-// for the BoringSSL reference.
-type certCache struct {
-	sync.Map
-}
-
-var clientCertCache = new(certCache)
-
-// activeCert is a handle to a certificate held in the cache. Once there are
-// no alive activeCerts for a given certificate, the certificate is removed
-// from the cache by a finalizer.
-type activeCert struct {
-	cert *x509.Certificate
-}
-
-// active increments the number of references to the entry, wraps the
-// certificate in the entry in a activeCert, and sets the finalizer.
-//
-// Note that there is a race between active and the finalizer set on the
-// returned activeCert, triggered if active is called after the ref count is
-// decremented such that refs may be > 0 when evict is called. We consider this
-// safe, since the caller holding an activeCert for an entry that is no longer
-// in the cache is fine, with the only side effect being the memory overhead of
-// there being more than one distinct reference to a certificate alive at once.
-func (cc *certCache) active(e *cacheEntry) *activeCert {
-	e.refs.Add(1)
-	a := &activeCert{e.cert}
-	runtime.SetFinalizer(a, func(_ *activeCert) {
-		if e.refs.Add(-1) == 0 {
-			cc.evict(e)
-		}
-	})
-	return a
-}
-
-// evict removes a cacheEntry from the cache.
-func (cc *certCache) evict(e *cacheEntry) {
-	cc.Delete(string(e.cert.Raw))
-}
-
-// newCert returns a x509.Certificate parsed from der. If there is already a copy
-// of the certificate in the cache, a reference to the existing certificate will
-// be returned. Otherwise, a fresh certificate will be added to the cache, and
-// the reference returned. The returned reference should not be mutated.
-func (cc *certCache) newCert(der []byte) (*activeCert, error) {
-	if entry, ok := cc.Load(string(der)); ok {
-		return cc.active(entry.(*cacheEntry)), nil
-	}
-
-	cert, err := x509.ParseCertificate(der)
-	if err != nil {
-		return nil, err
-	}
-
-	entry := &cacheEntry{cert: cert}
-	if entry, loaded := cc.LoadOrStore(string(der), entry); loaded {
-		return cc.active(entry.(*cacheEntry)), nil
-	}
-	return cc.active(entry), nil
-}

transport/shadowtls/tls/cipher_suites.go

@@ -1,701 +0,0 @@
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package tls
-
-import (
-	"crypto"
-	"crypto/aes"
-	"crypto/cipher"
-	"crypto/des"
-	"crypto/hmac"
-	"crypto/rc4"
-	"crypto/sha1"
-	"crypto/sha256"
-	"fmt"
-	"hash"
-	"runtime"
-
-	"golang.org/x/crypto/chacha20poly1305"
-	"golang.org/x/sys/cpu"
-)
-
-// CipherSuite is a TLS cipher suite. Note that most functions in this package
-// accept and expose cipher suite IDs instead of this type.
-type CipherSuite struct {
-	ID   uint16
-	Name string
-
-	// Supported versions is the list of TLS protocol versions that can
-	// negotiate this cipher suite.
-	SupportedVersions []uint16
-
-	// Insecure is true if the cipher suite has known security issues
-	// due to its primitives, design, or implementation.
-	Insecure bool
-}
-
-var (
-	supportedUpToTLS12 = []uint16{VersionTLS10, VersionTLS11, VersionTLS12}
-	supportedOnlyTLS12 = []uint16{VersionTLS12}
-	supportedOnlyTLS13 = []uint16{VersionTLS13}
-)
-
-// CipherSuites returns a list of cipher suites currently implemented by this
-// package, excluding those with security issues, which are returned by
-// InsecureCipherSuites.
-//
-// The list is sorted by ID. Note that the default cipher suites selected by
-// this package might depend on logic that can't be captured by a static list,
-// and might not match those returned by this function.
-func CipherSuites() []*CipherSuite {
-	return []*CipherSuite{
-		{TLS_RSA_WITH_AES_128_CBC_SHA, "TLS_RSA_WITH_AES_128_CBC_SHA", supportedUpToTLS12, false},
-		{TLS_RSA_WITH_AES_256_CBC_SHA, "TLS_RSA_WITH_AES_256_CBC_SHA", supportedUpToTLS12, false},
-		{TLS_RSA_WITH_AES_128_GCM_SHA256, "TLS_RSA_WITH_AES_128_GCM_SHA256", supportedOnlyTLS12, false},
-		{TLS_RSA_WITH_AES_256_GCM_SHA384, "TLS_RSA_WITH_AES_256_GCM_SHA384", supportedOnlyTLS12, false},
-
-		{TLS_AES_128_GCM_SHA256, "TLS_AES_128_GCM_SHA256", supportedOnlyTLS13, false},
-		{TLS_AES_256_GCM_SHA384, "TLS_AES_256_GCM_SHA384", supportedOnlyTLS13, false},
-		{TLS_CHACHA20_POLY1305_SHA256, "TLS_CHACHA20_POLY1305_SHA256", supportedOnlyTLS13, false},
-
-		{TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA", supportedUpToTLS12, false},
-		{TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA", supportedUpToTLS12, false},
-		{TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA", supportedUpToTLS12, false},
-		{TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA", supportedUpToTLS12, false},
-		{TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256", supportedOnlyTLS12, false},
-		{TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384", supportedOnlyTLS12, false},
-		{TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256", supportedOnlyTLS12, false},
-		{TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384", supportedOnlyTLS12, false},
-		{TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256, "TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256", supportedOnlyTLS12, false},
-		{TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256, "TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256", supportedOnlyTLS12, false},
-	}
-}
-
-// InsecureCipherSuites returns a list of cipher suites currently implemented by
-// this package and which have security issues.
-//
-// Most applications should not use the cipher suites in this list, and should
-// only use those returned by CipherSuites.
-func InsecureCipherSuites() []*CipherSuite {
-	// This list includes RC4, CBC_SHA256, and 3DES cipher suites. See
-	// cipherSuitesPreferenceOrder for details.
-	return []*CipherSuite{
-		{TLS_RSA_WITH_RC4_128_SHA, "TLS_RSA_WITH_RC4_128_SHA", supportedUpToTLS12, true},
-		{TLS_RSA_WITH_3DES_EDE_CBC_SHA, "TLS_RSA_WITH_3DES_EDE_CBC_SHA", supportedUpToTLS12, true},
-		{TLS_RSA_WITH_AES_128_CBC_SHA256, "TLS_RSA_WITH_AES_128_CBC_SHA256", supportedOnlyTLS12, true},
-		{TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, "TLS_ECDHE_ECDSA_WITH_RC4_128_SHA", supportedUpToTLS12, true},
-		{TLS_ECDHE_RSA_WITH_RC4_128_SHA, "TLS_ECDHE_RSA_WITH_RC4_128_SHA", supportedUpToTLS12, true},
-		{TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, "TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA", supportedUpToTLS12, true},
-		{TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256", supportedOnlyTLS12, true},
-		{TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256", supportedOnlyTLS12, true},
-	}
-}
-
-// CipherSuiteName returns the standard name for the passed cipher suite ID
-// (e.g. "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256"), or a fallback representation
-// of the ID value if the cipher suite is not implemented by this package.
-func CipherSuiteName(id uint16) string {
-	for _, c := range CipherSuites() {
-		if c.ID == id {
-			return c.Name
-		}
-	}
-	for _, c := range InsecureCipherSuites() {
-		if c.ID == id {
-			return c.Name
-		}
-	}
-	return fmt.Sprintf("0x%04X", id)
-}
-
-const (
-	// suiteECDHE indicates that the cipher suite involves elliptic curve
-	// Diffie-Hellman. This means that it should only be selected when the
-	// client indicates that it supports ECC with a curve and point format
-	// that we're happy with.
-	suiteECDHE = 1 << iota
-	// suiteECSign indicates that the cipher suite involves an ECDSA or
-	// EdDSA signature and therefore may only be selected when the server's
-	// certificate is ECDSA or EdDSA. If this is not set then the cipher suite
-	// is RSA based.
-	suiteECSign
-	// suiteTLS12 indicates that the cipher suite should only be advertised
-	// and accepted when using TLS 1.2.
-	suiteTLS12
-	// suiteSHA384 indicates that the cipher suite uses SHA384 as the
-	// handshake hash.
-	suiteSHA384
-)
-
-// A cipherSuite is a TLS 1.0–1.2 cipher suite, and defines the key exchange
-// mechanism, as well as the cipher+MAC pair or the AEAD.
-type cipherSuite struct {
-	id uint16
-	// the lengths, in bytes, of the key material needed for each component.
-	keyLen int
-	macLen int
-	ivLen  int
-	ka     func(version uint16) keyAgreement
-	// flags is a bitmask of the suite* values, above.
-	flags  int
-	cipher func(key, iv []byte, isRead bool) any
-	mac    func(key []byte) hash.Hash
-	aead   func(key, fixedNonce []byte) aead
-}
-
-var cipherSuites = []*cipherSuite{ // TODO: replace with a map, since the order doesn't matter.
-	{TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305, 32, 0, 12, ecdheRSAKA, suiteECDHE | suiteTLS12, nil, nil, aeadChaCha20Poly1305},
-	{TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305, 32, 0, 12, ecdheECDSAKA, suiteECDHE | suiteECSign | suiteTLS12, nil, nil, aeadChaCha20Poly1305},
-	{TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, 16, 0, 4, ecdheRSAKA, suiteECDHE | suiteTLS12, nil, nil, aeadAESGCM},
-	{TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, 16, 0, 4, ecdheECDSAKA, suiteECDHE | suiteECSign | suiteTLS12, nil, nil, aeadAESGCM},
-	{TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, 32, 0, 4, ecdheRSAKA, suiteECDHE | suiteTLS12 | suiteSHA384, nil, nil, aeadAESGCM},
-	{TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, 32, 0, 4, ecdheECDSAKA, suiteECDHE | suiteECSign | suiteTLS12 | suiteSHA384, nil, nil, aeadAESGCM},
-	{TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, 16, 32, 16, ecdheRSAKA, suiteECDHE | suiteTLS12, cipherAES, macSHA256, nil},
-	{TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, 16, 20, 16, ecdheRSAKA, suiteECDHE, cipherAES, macSHA1, nil},
-	{TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, 16, 32, 16, ecdheECDSAKA, suiteECDHE | suiteECSign | suiteTLS12, cipherAES, macSHA256, nil},
-	{TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, 16, 20, 16, ecdheECDSAKA, suiteECDHE | suiteECSign, cipherAES, macSHA1, nil},
-	{TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, 32, 20, 16, ecdheRSAKA, suiteECDHE, cipherAES, macSHA1, nil},
-	{TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, 32, 20, 16, ecdheECDSAKA, suiteECDHE | suiteECSign, cipherAES, macSHA1, nil},
-	{TLS_RSA_WITH_AES_128_GCM_SHA256, 16, 0, 4, rsaKA, suiteTLS12, nil, nil, aeadAESGCM},
-	{TLS_RSA_WITH_AES_256_GCM_SHA384, 32, 0, 4, rsaKA, suiteTLS12 | suiteSHA384, nil, nil, aeadAESGCM},
-	{TLS_RSA_WITH_AES_128_CBC_SHA256, 16, 32, 16, rsaKA, suiteTLS12, cipherAES, macSHA256, nil},
-	{TLS_RSA_WITH_AES_128_CBC_SHA, 16, 20, 16, rsaKA, 0, cipherAES, macSHA1, nil},
-	{TLS_RSA_WITH_AES_256_CBC_SHA, 32, 20, 16, rsaKA, 0, cipherAES, macSHA1, nil},
-	{TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, 24, 20, 8, ecdheRSAKA, suiteECDHE, cipher3DES, macSHA1, nil},
-	{TLS_RSA_WITH_3DES_EDE_CBC_SHA, 24, 20, 8, rsaKA, 0, cipher3DES, macSHA1, nil},
-	{TLS_RSA_WITH_RC4_128_SHA, 16, 20, 0, rsaKA, 0, cipherRC4, macSHA1, nil},
-	{TLS_ECDHE_RSA_WITH_RC4_128_SHA, 16, 20, 0, ecdheRSAKA, suiteECDHE, cipherRC4, macSHA1, nil},
-	{TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, 16, 20, 0, ecdheECDSAKA, suiteECDHE | suiteECSign, cipherRC4, macSHA1, nil},
-}
-
-// selectCipherSuite returns the first TLS 1.0–1.2 cipher suite from ids which
-// is also in supportedIDs and passes the ok filter.
-func selectCipherSuite(ids, supportedIDs []uint16, ok func(*cipherSuite) bool) *cipherSuite {
-	for _, id := range ids {
-		candidate := cipherSuiteByID(id)
-		if candidate == nil || !ok(candidate) {
-			continue
-		}
-
-		for _, suppID := range supportedIDs {
-			if id == suppID {
-				return candidate
-			}
-		}
-	}
-	return nil
-}
-
-// A cipherSuiteTLS13 defines only the pair of the AEAD algorithm and hash
-// algorithm to be used with HKDF. See RFC 8446, Appendix B.4.
-type cipherSuiteTLS13 struct {
-	id     uint16
-	keyLen int
-	aead   func(key, fixedNonce []byte) aead
-	hash   crypto.Hash
-}
-
-var cipherSuitesTLS13 = []*cipherSuiteTLS13{ // TODO: replace with a map.
-	{TLS_AES_128_GCM_SHA256, 16, aeadAESGCMTLS13, crypto.SHA256},
-	{TLS_CHACHA20_POLY1305_SHA256, 32, aeadChaCha20Poly1305, crypto.SHA256},
-	{TLS_AES_256_GCM_SHA384, 32, aeadAESGCMTLS13, crypto.SHA384},
-}
-
-// cipherSuitesPreferenceOrder is the order in which we'll select (on the
-// server) or advertise (on the client) TLS 1.0–1.2 cipher suites.
-//
-// Cipher suites are filtered but not reordered based on the application and
-// peer's preferences, meaning we'll never select a suite lower in this list if
-// any higher one is available. This makes it more defensible to keep weaker
-// cipher suites enabled, especially on the server side where we get the last
-// word, since there are no known downgrade attacks on cipher suites selection.
-//
-// The list is sorted by applying the following priority rules, stopping at the
-// first (most important) applicable one:
-//
-//   - Anything else comes before RC4
-//
-//     RC4 has practically exploitable biases. See https://www.rc4nomore.com.
-//
-//   - Anything else comes before CBC_SHA256
-//
-//     SHA-256 variants of the CBC ciphersuites don't implement any Lucky13
-//     countermeasures. See http://www.isg.rhul.ac.uk/tls/Lucky13.html and
-//     https://www.imperialviolet.org/2013/02/04/luckythirteen.html.
-//
-//   - Anything else comes before 3DES
-//
-//     3DES has 64-bit blocks, which makes it fundamentally susceptible to
-//     birthday attacks. See https://sweet32.info.
-//
-//   - ECDHE comes before anything else
-//
-//     Once we got the broken stuff out of the way, the most important
-//     property a cipher suite can have is forward secrecy. We don't
-//     implement FFDHE, so that means ECDHE.
-//
-//   - AEADs come before CBC ciphers
-//
-//     Even with Lucky13 countermeasures, MAC-then-Encrypt CBC cipher suites
-//     are fundamentally fragile, and suffered from an endless sequence of
-//     padding oracle attacks. See https://eprint.iacr.org/2015/1129,
-//     https://www.imperialviolet.org/2014/12/08/poodleagain.html, and
-//     https://blog.cloudflare.com/yet-another-padding-oracle-in-openssl-cbc-ciphersuites/.
-//
-//   - AES comes before ChaCha20
-//
-//     When AES hardware is available, AES-128-GCM and AES-256-GCM are faster
-//     than ChaCha20Poly1305.
-//
-//     When AES hardware is not available, AES-128-GCM is one or more of: much
-//     slower, way more complex, and less safe (because not constant time)
-//     than ChaCha20Poly1305.
-//
-//     We use this list if we think both peers have AES hardware, and
-//     cipherSuitesPreferenceOrderNoAES otherwise.
-//
-//   - AES-128 comes before AES-256
-//
-//     The only potential advantages of AES-256 are better multi-target
-//     margins, and hypothetical post-quantum properties. Neither apply to
-//     TLS, and AES-256 is slower due to its four extra rounds (which don't
-//     contribute to the advantages above).
-//
-//   - ECDSA comes before RSA
-//
-//     The relative order of ECDSA and RSA cipher suites doesn't matter,
-//     as they depend on the certificate. Pick one to get a stable order.
-var cipherSuitesPreferenceOrder = []uint16{
-	// AEADs w/ ECDHE
-	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
-	TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
-	TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305, TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
-
-	// CBC w/ ECDHE
-	TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
-	TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
-
-	// AEADs w/o ECDHE
-	TLS_RSA_WITH_AES_128_GCM_SHA256,
-	TLS_RSA_WITH_AES_256_GCM_SHA384,
-
-	// CBC w/o ECDHE
-	TLS_RSA_WITH_AES_128_CBC_SHA,
-	TLS_RSA_WITH_AES_256_CBC_SHA,
-
-	// 3DES
-	TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,
-	TLS_RSA_WITH_3DES_EDE_CBC_SHA,
-
-	// CBC_SHA256
-	TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
-	TLS_RSA_WITH_AES_128_CBC_SHA256,
-
-	// RC4
-	TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, TLS_ECDHE_RSA_WITH_RC4_128_SHA,
-	TLS_RSA_WITH_RC4_128_SHA,
-}
-
-var cipherSuitesPreferenceOrderNoAES = []uint16{
-	// ChaCha20Poly1305
-	TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305, TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
-
-	// AES-GCM w/ ECDHE
-	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
-	TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
-
-	// The rest of cipherSuitesPreferenceOrder.
-	TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
-	TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
-	TLS_RSA_WITH_AES_128_GCM_SHA256,
-	TLS_RSA_WITH_AES_256_GCM_SHA384,
-	TLS_RSA_WITH_AES_128_CBC_SHA,
-	TLS_RSA_WITH_AES_256_CBC_SHA,
-	TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,
-	TLS_RSA_WITH_3DES_EDE_CBC_SHA,
-	TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
-	TLS_RSA_WITH_AES_128_CBC_SHA256,
-	TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, TLS_ECDHE_RSA_WITH_RC4_128_SHA,
-	TLS_RSA_WITH_RC4_128_SHA,
-}
-
-// disabledCipherSuites are not used unless explicitly listed in
-// Config.CipherSuites. They MUST be at the end of cipherSuitesPreferenceOrder.
-var disabledCipherSuites = []uint16{
-	// CBC_SHA256
-	TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
-	TLS_RSA_WITH_AES_128_CBC_SHA256,
-
-	// RC4
-	TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, TLS_ECDHE_RSA_WITH_RC4_128_SHA,
-	TLS_RSA_WITH_RC4_128_SHA,
-}
-
-var (
-	defaultCipherSuitesLen = len(cipherSuitesPreferenceOrder) - len(disabledCipherSuites)
-	defaultCipherSuites    = cipherSuitesPreferenceOrder[:defaultCipherSuitesLen]
-)
-
-// defaultCipherSuitesTLS13 is also the preference order, since there are no
-// disabled by default TLS 1.3 cipher suites. The same AES vs ChaCha20 logic as
-// cipherSuitesPreferenceOrder applies.
-var defaultCipherSuitesTLS13 = []uint16{
-	TLS_AES_128_GCM_SHA256,
-	TLS_AES_256_GCM_SHA384,
-	TLS_CHACHA20_POLY1305_SHA256,
-}
-
-var defaultCipherSuitesTLS13NoAES = []uint16{
-	TLS_CHACHA20_POLY1305_SHA256,
-	TLS_AES_128_GCM_SHA256,
-	TLS_AES_256_GCM_SHA384,
-}
-
-var (
-	hasGCMAsmAMD64 = cpu.X86.HasAES && cpu.X86.HasPCLMULQDQ
-	hasGCMAsmARM64 = cpu.ARM64.HasAES && cpu.ARM64.HasPMULL
-	// Keep in sync with crypto/aes/cipher_s390x.go.
-	hasGCMAsmS390X = cpu.S390X.HasAES && cpu.S390X.HasAESCBC && cpu.S390X.HasAESCTR &&
-		(cpu.S390X.HasGHASH || cpu.S390X.HasAESGCM)
-
-	hasAESGCMHardwareSupport = runtime.GOARCH == "amd64" && hasGCMAsmAMD64 ||
-		runtime.GOARCH == "arm64" && hasGCMAsmARM64 ||
-		runtime.GOARCH == "s390x" && hasGCMAsmS390X
-)
-
-var aesgcmCiphers = map[uint16]bool{
-	// TLS 1.2
-	TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256:   true,
-	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384:   true,
-	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256: true,
-	TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384: true,
-	// TLS 1.3
-	TLS_AES_128_GCM_SHA256: true,
-	TLS_AES_256_GCM_SHA384: true,
-}
-
-var nonAESGCMAEADCiphers = map[uint16]bool{
-	// TLS 1.2
-	TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305:   true,
-	TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305: true,
-	// TLS 1.3
-	TLS_CHACHA20_POLY1305_SHA256: true,
-}
-
-// aesgcmPreferred returns whether the first known cipher in the preference list
-// is an AES-GCM cipher, implying the peer has hardware support for it.
-func aesgcmPreferred(ciphers []uint16) bool {
-	for _, cID := range ciphers {
-		if c := cipherSuiteByID(cID); c != nil {
-			return aesgcmCiphers[cID]
-		}
-		if c := cipherSuiteTLS13ByID(cID); c != nil {
-			return aesgcmCiphers[cID]
-		}
-	}
-	return false
-}
-
-func cipherRC4(key, iv []byte, isRead bool) any {
-	cipher, _ := rc4.NewCipher(key)
-	return cipher
-}
-
-func cipher3DES(key, iv []byte, isRead bool) any {
-	block, _ := des.NewTripleDESCipher(key)
-	if isRead {
-		return cipher.NewCBCDecrypter(block, iv)
-	}
-	return cipher.NewCBCEncrypter(block, iv)
-}
-
-func cipherAES(key, iv []byte, isRead bool) any {
-	block, _ := aes.NewCipher(key)
-	if isRead {
-		return cipher.NewCBCDecrypter(block, iv)
-	}
-	return cipher.NewCBCEncrypter(block, iv)
-}
-
-// macSHA1 returns a SHA-1 based constant time MAC.
-func macSHA1(key []byte) hash.Hash {
-	h := sha1.New
-	// The BoringCrypto SHA1 does not have a constant-time
-	// checksum function, so don't try to use it.
-	// if !boring.Enabled {
-	h = newConstantTimeHash(h)
-	//}
-	return hmac.New(h, key)
-}
-
-// macSHA256 returns a SHA-256 based MAC. This is only supported in TLS 1.2 and
-// is currently only used in disabled-by-default cipher suites.
-func macSHA256(key []byte) hash.Hash {
-	return hmac.New(sha256.New, key)
-}
-
-type aead interface {
-	cipher.AEAD
-
-	// explicitNonceLen returns the number of bytes of explicit nonce
-	// included in each record. This is eight for older AEADs and
-	// zero for modern ones.
-	explicitNonceLen() int
-}
-
-const (
-	aeadNonceLength   = 12
-	noncePrefixLength = 4
-)
-
-// prefixNonceAEAD wraps an AEAD and prefixes a fixed portion of the nonce to
-// each call.
-type prefixNonceAEAD struct {
-	// nonce contains the fixed part of the nonce in the first four bytes.
-	nonce [aeadNonceLength]byte
-	aead  cipher.AEAD
-}
-
-func (f *prefixNonceAEAD) NonceSize() int        { return aeadNonceLength - noncePrefixLength }
-func (f *prefixNonceAEAD) Overhead() int         { return f.aead.Overhead() }
-func (f *prefixNonceAEAD) explicitNonceLen() int { return f.NonceSize() }
-
-func (f *prefixNonceAEAD) Seal(out, nonce, plaintext, additionalData []byte) []byte {
-	copy(f.nonce[4:], nonce)
-	return f.aead.Seal(out, f.nonce[:], plaintext, additionalData)
-}
-
-func (f *prefixNonceAEAD) Open(out, nonce, ciphertext, additionalData []byte) ([]byte, error) {
-	copy(f.nonce[4:], nonce)
-	return f.aead.Open(out, f.nonce[:], ciphertext, additionalData)
-}
-
-// xorNonceAEAD wraps an AEAD by XORing in a fixed pattern to the nonce
-// before each call.
-type xorNonceAEAD struct {
-	nonceMask [aeadNonceLength]byte
-	aead      cipher.AEAD
-}
-
-func (f *xorNonceAEAD) NonceSize() int        { return 8 } // 64-bit sequence number
-func (f *xorNonceAEAD) Overhead() int         { return f.aead.Overhead() }
-func (f *xorNonceAEAD) explicitNonceLen() int { return 0 }
-
-func (f *xorNonceAEAD) Seal(out, nonce, plaintext, additionalData []byte) []byte {
-	for i, b := range nonce {
-		f.nonceMask[4+i] ^= b
-	}
-	result := f.aead.Seal(out, f.nonceMask[:], plaintext, additionalData)
-	for i, b := range nonce {
-		f.nonceMask[4+i] ^= b
-	}
-
-	return result
-}
-
-func (f *xorNonceAEAD) Open(out, nonce, ciphertext, additionalData []byte) ([]byte, error) {
-	for i, b := range nonce {
-		f.nonceMask[4+i] ^= b
-	}
-	result, err := f.aead.Open(out, f.nonceMask[:], ciphertext, additionalData)
-	for i, b := range nonce {
-		f.nonceMask[4+i] ^= b
-	}
-
-	return result, err
-}
-
-func aeadAESGCM(key, noncePrefix []byte) aead {
-	if len(noncePrefix) != noncePrefixLength {
-		panic("tls: internal error: wrong nonce length")
-	}
-	aes, err := aes.NewCipher(key)
-	if err != nil {
-		panic(err)
-	}
-	var aead cipher.AEAD
-	//if boring.Enabled {
-	//	aead, err = boring.NewGCMTLS(aes)
-	//} else {
-	//	boring.Unreachable()
-	aead, err = cipher.NewGCM(aes)
-	//}
-	if err != nil {
-		panic(err)
-	}
-
-	ret := &prefixNonceAEAD{aead: aead}
-	copy(ret.nonce[:], noncePrefix)
-	return ret
-}
-
-func aeadAESGCMTLS13(key, nonceMask []byte) aead {
-	if len(nonceMask) != aeadNonceLength {
-		panic("tls: internal error: wrong nonce length")
-	}
-	aes, err := aes.NewCipher(key)
-	if err != nil {
-		panic(err)
-	}
-	aead, err := cipher.NewGCM(aes)
-	if err != nil {
-		panic(err)
-	}
-
-	ret := &xorNonceAEAD{aead: aead}
-	copy(ret.nonceMask[:], nonceMask)
-	return ret
-}
-
-func aeadChaCha20Poly1305(key, nonceMask []byte) aead {
-	if len(nonceMask) != aeadNonceLength {
-		panic("tls: internal error: wrong nonce length")
-	}
-	aead, err := chacha20poly1305.New(key)
-	if err != nil {
-		panic(err)
-	}
-
-	ret := &xorNonceAEAD{aead: aead}
-	copy(ret.nonceMask[:], nonceMask)
-	return ret
-}
-
-type constantTimeHash interface {
-	hash.Hash
-	ConstantTimeSum(b []byte) []byte
-}
-
-// cthWrapper wraps any hash.Hash that implements ConstantTimeSum, and replaces
-// with that all calls to Sum. It's used to obtain a ConstantTimeSum-based HMAC.
-type cthWrapper struct {
-	h constantTimeHash
-}
-
-func (c *cthWrapper) Size() int                   { return c.h.Size() }
-func (c *cthWrapper) BlockSize() int              { return c.h.BlockSize() }
-func (c *cthWrapper) Reset()                      { c.h.Reset() }
-func (c *cthWrapper) Write(p []byte) (int, error) { return c.h.Write(p) }
-func (c *cthWrapper) Sum(b []byte) []byte         { return c.h.ConstantTimeSum(b) }
-
-func newConstantTimeHash(h func() hash.Hash) func() hash.Hash {
-	// boring.Unreachable()
-	return func() hash.Hash {
-		return &cthWrapper{h().(constantTimeHash)}
-	}
-}
-
-// tls10MAC implements the TLS 1.0 MAC function. RFC 2246, Section 6.2.3.
-func tls10MAC(h hash.Hash, out, seq, header, data, extra []byte) []byte {
-	h.Reset()
-	h.Write(seq)
-	h.Write(header)
-	h.Write(data)
-	res := h.Sum(out)
-	if extra != nil {
-		h.Write(extra)
-	}
-	return res
-}
-
-func rsaKA(version uint16) keyAgreement {
-	return rsaKeyAgreement{}
-}
-
-func ecdheECDSAKA(version uint16) keyAgreement {
-	return &ecdheKeyAgreement{
-		isRSA:   false,
-		version: version,
-	}
-}
-
-func ecdheRSAKA(version uint16) keyAgreement {
-	return &ecdheKeyAgreement{
-		isRSA:   true,
-		version: version,
-	}
-}
-
-// mutualCipherSuite returns a cipherSuite given a list of supported
-// ciphersuites and the id requested by the peer.
-func mutualCipherSuite(have []uint16, want uint16) *cipherSuite {
-	for _, id := range have {
-		if id == want {
-			return cipherSuiteByID(id)
-		}
-	}
-	return nil
-}
-
-func cipherSuiteByID(id uint16) *cipherSuite {
-	for _, cipherSuite := range cipherSuites {
-		if cipherSuite.id == id {
-			return cipherSuite
-		}
-	}
-	return nil
-}
-
-func mutualCipherSuiteTLS13(have []uint16, want uint16) *cipherSuiteTLS13 {
-	for _, id := range have {
-		if id == want {
-			return cipherSuiteTLS13ByID(id)
-		}
-	}
-	return nil
-}
-
-func cipherSuiteTLS13ByID(id uint16) *cipherSuiteTLS13 {
-	for _, cipherSuite := range cipherSuitesTLS13 {
-		if cipherSuite.id == id {
-			return cipherSuite
-		}
-	}
-	return nil
-}
-
-// A list of cipher suite IDs that are, or have been, implemented by this
-// package.
-//
-// See https://www.iana.org/assignments/tls-parameters/tls-parameters.xml
-const (
-	// TLS 1.0 - 1.2 cipher suites.
-	TLS_RSA_WITH_RC4_128_SHA                      uint16 = 0x0005
-	TLS_RSA_WITH_3DES_EDE_CBC_SHA                 uint16 = 0x000a
-	TLS_RSA_WITH_AES_128_CBC_SHA                  uint16 = 0x002f
-	TLS_RSA_WITH_AES_256_CBC_SHA                  uint16 = 0x0035
-	TLS_RSA_WITH_AES_128_CBC_SHA256               uint16 = 0x003c
-	TLS_RSA_WITH_AES_128_GCM_SHA256               uint16 = 0x009c
-	TLS_RSA_WITH_AES_256_GCM_SHA384               uint16 = 0x009d
-	TLS_ECDHE_ECDSA_WITH_RC4_128_SHA              uint16 = 0xc007
-	TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA          uint16 = 0xc009
-	TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA          uint16 = 0xc00a
-	TLS_ECDHE_RSA_WITH_RC4_128_SHA                uint16 = 0xc011
-	TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA           uint16 = 0xc012
-	TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA            uint16 = 0xc013
-	TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA            uint16 = 0xc014
-	TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256       uint16 = 0xc023
-	TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256         uint16 = 0xc027
-	TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256         uint16 = 0xc02f
-	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256       uint16 = 0xc02b
-	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384         uint16 = 0xc030
-	TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384       uint16 = 0xc02c
-	TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256   uint16 = 0xcca8
-	TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 uint16 = 0xcca9
-
-	// TLS 1.3 cipher suites.
-	TLS_AES_128_GCM_SHA256       uint16 = 0x1301
-	TLS_AES_256_GCM_SHA384       uint16 = 0x1302
-	TLS_CHACHA20_POLY1305_SHA256 uint16 = 0x1303
-
-	// TLS_FALLBACK_SCSV isn't a standard cipher suite but an indicator
-	// that the client is doing version fallback. See RFC 7507.
-	TLS_FALLBACK_SCSV uint16 = 0x5600
-
-	// Legacy names for the corresponding cipher suites with the correct _SHA256
-	// suffix, retained for backward compatibility.
-	TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305   = TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
-	TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305 = TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256
-)

transport/shadowtls/tls/common_string.go

@@ -1,116 +0,0 @@
-// Code generated by "stringer -type=SignatureScheme,CurveID,ClientAuthType -output=common_string.go"; DO NOT EDIT.
-
-package tls
-
-import "strconv"
-
-func _() {
-	// An "invalid array index" compiler error signifies that the constant values have changed.
-	// Re-run the stringer command to generate them again.
-	var x [1]struct{}
-	_ = x[PKCS1WithSHA256-1025]
-	_ = x[PKCS1WithSHA384-1281]
-	_ = x[PKCS1WithSHA512-1537]
-	_ = x[PSSWithSHA256-2052]
-	_ = x[PSSWithSHA384-2053]
-	_ = x[PSSWithSHA512-2054]
-	_ = x[ECDSAWithP256AndSHA256-1027]
-	_ = x[ECDSAWithP384AndSHA384-1283]
-	_ = x[ECDSAWithP521AndSHA512-1539]
-	_ = x[Ed25519-2055]
-	_ = x[PKCS1WithSHA1-513]
-	_ = x[ECDSAWithSHA1-515]
-}
-
-const (
-	_SignatureScheme_name_0 = "PKCS1WithSHA1"
-	_SignatureScheme_name_1 = "ECDSAWithSHA1"
-	_SignatureScheme_name_2 = "PKCS1WithSHA256"
-	_SignatureScheme_name_3 = "ECDSAWithP256AndSHA256"
-	_SignatureScheme_name_4 = "PKCS1WithSHA384"
-	_SignatureScheme_name_5 = "ECDSAWithP384AndSHA384"
-	_SignatureScheme_name_6 = "PKCS1WithSHA512"
-	_SignatureScheme_name_7 = "ECDSAWithP521AndSHA512"
-	_SignatureScheme_name_8 = "PSSWithSHA256PSSWithSHA384PSSWithSHA512Ed25519"
-)
-
-var (
-	_SignatureScheme_index_8 = [...]uint8{0, 13, 26, 39, 46}
-)
-
-func (i SignatureScheme) String() string {
-	switch {
-	case i == 513:
-		return _SignatureScheme_name_0
-	case i == 515:
-		return _SignatureScheme_name_1
-	case i == 1025:
-		return _SignatureScheme_name_2
-	case i == 1027:
-		return _SignatureScheme_name_3
-	case i == 1281:
-		return _SignatureScheme_name_4
-	case i == 1283:
-		return _SignatureScheme_name_5
-	case i == 1537:
-		return _SignatureScheme_name_6
-	case i == 1539:
-		return _SignatureScheme_name_7
-	case 2052 <= i && i <= 2055:
-		i -= 2052
-		return _SignatureScheme_name_8[_SignatureScheme_index_8[i]:_SignatureScheme_index_8[i+1]]
-	default:
-		return "SignatureScheme(" + strconv.FormatInt(int64(i), 10) + ")"
-	}
-}
-func _() {
-	// An "invalid array index" compiler error signifies that the constant values have changed.
-	// Re-run the stringer command to generate them again.
-	var x [1]struct{}
-	_ = x[CurveP256-23]
-	_ = x[CurveP384-24]
-	_ = x[CurveP521-25]
-	_ = x[X25519-29]
-}
-
-const (
-	_CurveID_name_0 = "CurveP256CurveP384CurveP521"
-	_CurveID_name_1 = "X25519"
-)
-
-var (
-	_CurveID_index_0 = [...]uint8{0, 9, 18, 27}
-)
-
-func (i CurveID) String() string {
-	switch {
-	case 23 <= i && i <= 25:
-		i -= 23
-		return _CurveID_name_0[_CurveID_index_0[i]:_CurveID_index_0[i+1]]
-	case i == 29:
-		return _CurveID_name_1
-	default:
-		return "CurveID(" + strconv.FormatInt(int64(i), 10) + ")"
-	}
-}
-func _() {
-	// An "invalid array index" compiler error signifies that the constant values have changed.
-	// Re-run the stringer command to generate them again.
-	var x [1]struct{}
-	_ = x[NoClientCert-0]
-	_ = x[RequestClientCert-1]
-	_ = x[RequireAnyClientCert-2]
-	_ = x[VerifyClientCertIfGiven-3]
-	_ = x[RequireAndVerifyClientCert-4]
-}
-
-const _ClientAuthType_name = "NoClientCertRequestClientCertRequireAnyClientCertVerifyClientCertIfGivenRequireAndVerifyClientCert"
-
-var _ClientAuthType_index = [...]uint8{0, 12, 29, 49, 72, 98}
-
-func (i ClientAuthType) String() string {
-	if i < 0 || i >= ClientAuthType(len(_ClientAuthType_index)-1) {
-		return "ClientAuthType(" + strconv.FormatInt(int64(i), 10) + ")"
-	}
-	return _ClientAuthType_name[_ClientAuthType_index[i]:_ClientAuthType_index[i+1]]
-}

transport/shadowtls/tls/handshake_client_tls13.go

@@ -1,692 +0,0 @@
-// Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package tls
-
-import (
-	"bytes"
-	"context"
-	"crypto"
-	"crypto/hmac"
-	"crypto/rsa"
-	"errors"
-	"hash"
-	"time"
-
-	"crypto/ecdh"
-)
-
-type clientHandshakeStateTLS13 struct {
-	c           *Conn
-	ctx         context.Context
-	serverHello *serverHelloMsg
-	hello       *clientHelloMsg
-	ecdheKey    *ecdh.PrivateKey
-
-	session     *ClientSessionState
-	earlySecret []byte
-	binderKey   []byte
-
-	certReq       *certificateRequestMsgTLS13
-	usingPSK      bool
-	sentDummyCCS  bool
-	suite         *cipherSuiteTLS13
-	transcript    hash.Hash
-	masterSecret  []byte
-	trafficSecret []byte // client_application_traffic_secret_0
-}
-
-// handshake requires hs.c, hs.hello, hs.serverHello, hs.ecdheKey, and,
-// optionally, hs.session, hs.earlySecret and hs.binderKey to be set.
-func (hs *clientHandshakeStateTLS13) handshake() error {
-	c := hs.c
-
-	if needFIPS() {
-		return errors.New("tls: internal error: TLS 1.3 reached in FIPS mode")
-	}
-
-	// The server must not select TLS 1.3 in a renegotiation. See RFC 8446,
-	// sections 4.1.2 and 4.1.3.
-	if c.handshakes > 0 {
-		c.sendAlert(alertProtocolVersion)
-		return errors.New("tls: server selected TLS 1.3 in a renegotiation")
-	}
-
-	// Consistency check on the presence of a keyShare and its parameters.
-	if hs.ecdheKey == nil || len(hs.hello.keyShares) != 1 {
-		return c.sendAlert(alertInternalError)
-	}
-
-	if err := hs.checkServerHelloOrHRR(); err != nil {
-		return err
-	}
-
-	hs.transcript = hs.suite.hash.New()
-	hs.transcript.Write(hs.hello.marshal())
-
-	if bytes.Equal(hs.serverHello.random, helloRetryRequestRandom) {
-		if err := hs.sendDummyChangeCipherSpec(); err != nil {
-			return err
-		}
-		if err := hs.processHelloRetryRequest(); err != nil {
-			return err
-		}
-	}
-
-	hs.transcript.Write(hs.serverHello.marshal())
-
-	c.buffering = true
-	if err := hs.processServerHello(); err != nil {
-		return err
-	}
-	if err := hs.sendDummyChangeCipherSpec(); err != nil {
-		return err
-	}
-	if err := hs.establishHandshakeKeys(); err != nil {
-		return err
-	}
-	if err := hs.readServerParameters(); err != nil {
-		return err
-	}
-	if err := hs.readServerCertificate(); err != nil {
-		return err
-	}
-	if err := hs.readServerFinished(); err != nil {
-		return err
-	}
-	if err := hs.sendClientCertificate(); err != nil {
-		return err
-	}
-	if err := hs.sendClientFinished(); err != nil {
-		return err
-	}
-	if _, err := c.flush(); err != nil {
-		return err
-	}
-
-	c.isHandshakeComplete.Store(true)
-
-	return nil
-}
-
-// checkServerHelloOrHRR does validity checks that apply to both ServerHello and
-// HelloRetryRequest messages. It sets hs.suite.
-func (hs *clientHandshakeStateTLS13) checkServerHelloOrHRR() error {
-	c := hs.c
-
-	if hs.serverHello.supportedVersion == 0 {
-		c.sendAlert(alertMissingExtension)
-		return errors.New("tls: server selected TLS 1.3 using the legacy version field")
-	}
-
-	if hs.serverHello.supportedVersion != VersionTLS13 {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: server selected an invalid version after a HelloRetryRequest")
-	}
-
-	if hs.serverHello.vers != VersionTLS12 {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: server sent an incorrect legacy version")
-	}
-
-	if hs.serverHello.ocspStapling ||
-		hs.serverHello.ticketSupported ||
-		hs.serverHello.secureRenegotiationSupported ||
-		len(hs.serverHello.secureRenegotiation) != 0 ||
-		len(hs.serverHello.alpnProtocol) != 0 ||
-		len(hs.serverHello.scts) != 0 {
-		c.sendAlert(alertUnsupportedExtension)
-		return errors.New("tls: server sent a ServerHello extension forbidden in TLS 1.3")
-	}
-
-	if !bytes.Equal(hs.hello.sessionId, hs.serverHello.sessionId) {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: server did not echo the legacy session ID")
-	}
-
-	if hs.serverHello.compressionMethod != compressionNone {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: server selected unsupported compression format")
-	}
-
-	selectedSuite := mutualCipherSuiteTLS13(hs.hello.cipherSuites, hs.serverHello.cipherSuite)
-	if hs.suite != nil && selectedSuite != hs.suite {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: server changed cipher suite after a HelloRetryRequest")
-	}
-	if selectedSuite == nil {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: server chose an unconfigured cipher suite")
-	}
-	hs.suite = selectedSuite
-	c.cipherSuite = hs.suite.id
-
-	return nil
-}
-
-// sendDummyChangeCipherSpec sends a ChangeCipherSpec record for compatibility
-// with middleboxes that didn't implement TLS correctly. See RFC 8446, Appendix D.4.
-func (hs *clientHandshakeStateTLS13) sendDummyChangeCipherSpec() error {
-	if hs.sentDummyCCS {
-		return nil
-	}
-	hs.sentDummyCCS = true
-
-	_, err := hs.c.writeRecord(recordTypeChangeCipherSpec, []byte{1})
-	return err
-}
-
-// processHelloRetryRequest handles the HRR in hs.serverHello, modifies and
-// resends hs.hello, and reads the new ServerHello into hs.serverHello.
-func (hs *clientHandshakeStateTLS13) processHelloRetryRequest() error {
-	c := hs.c
-
-	// The first ClientHello gets double-hashed into the transcript upon a
-	// HelloRetryRequest. (The idea is that the server might offload transcript
-	// storage to the client in the cookie.) See RFC 8446, Section 4.4.1.
-	chHash := hs.transcript.Sum(nil)
-	hs.transcript.Reset()
-	hs.transcript.Write([]byte{typeMessageHash, 0, 0, uint8(len(chHash))})
-	hs.transcript.Write(chHash)
-	hs.transcript.Write(hs.serverHello.marshal())
-
-	// The only HelloRetryRequest extensions we support are key_share and
-	// cookie, and clients must abort the handshake if the HRR would not result
-	// in any change in the ClientHello.
-	if hs.serverHello.selectedGroup == 0 && hs.serverHello.cookie == nil {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: server sent an unnecessary HelloRetryRequest message")
-	}
-
-	if hs.serverHello.cookie != nil {
-		hs.hello.cookie = hs.serverHello.cookie
-	}
-
-	if hs.serverHello.serverShare.group != 0 {
-		c.sendAlert(alertDecodeError)
-		return errors.New("tls: received malformed key_share extension")
-	}
-
-	// If the server sent a key_share extension selecting a group, ensure it's
-	// a group we advertised but did not send a key share for, and send a key
-	// share for it this time.
-	if curveID := hs.serverHello.selectedGroup; curveID != 0 {
-		curveOK := false
-		for _, id := range hs.hello.supportedCurves {
-			if id == curveID {
-				curveOK = true
-				break
-			}
-		}
-		if !curveOK {
-			c.sendAlert(alertIllegalParameter)
-			return errors.New("tls: server selected unsupported group")
-		}
-		if sentID, _ := curveIDForCurve(hs.ecdheKey.Curve()); sentID == curveID {
-			c.sendAlert(alertIllegalParameter)
-			return errors.New("tls: server sent an unnecessary HelloRetryRequest key_share")
-		}
-		if _, ok := curveForCurveID(curveID); !ok {
-			c.sendAlert(alertInternalError)
-			return errors.New("tls: CurvePreferences includes unsupported curve")
-		}
-		key, err := generateECDHEKey(c.config.rand(), curveID)
-		if err != nil {
-			c.sendAlert(alertInternalError)
-			return err
-		}
-		hs.ecdheKey = key
-		hs.hello.keyShares = []keyShare{{group: curveID, data: key.PublicKey().Bytes()}}
-	}
-
-	hs.hello.raw = nil
-	if len(hs.hello.pskIdentities) > 0 {
-		pskSuite := cipherSuiteTLS13ByID(hs.session.cipherSuite)
-		if pskSuite == nil {
-			return c.sendAlert(alertInternalError)
-		}
-		if pskSuite.hash == hs.suite.hash {
-			// Update binders and obfuscated_ticket_age.
-			ticketAge := uint32(c.config.time().Sub(hs.session.receivedAt) / time.Millisecond)
-			hs.hello.pskIdentities[0].obfuscatedTicketAge = ticketAge + hs.session.ageAdd
-
-			transcript := hs.suite.hash.New()
-			transcript.Write([]byte{typeMessageHash, 0, 0, uint8(len(chHash))})
-			transcript.Write(chHash)
-			transcript.Write(hs.serverHello.marshal())
-			transcript.Write(hs.hello.marshalWithoutBinders())
-			pskBinders := [][]byte{hs.suite.finishedHash(hs.binderKey, transcript)}
-			hs.hello.updateBinders(pskBinders)
-		} else {
-			// Server selected a cipher suite incompatible with the PSK.
-			hs.hello.pskIdentities = nil
-			hs.hello.pskBinders = nil
-		}
-	}
-
-	hs.transcript.Write(hs.hello.marshal())
-	if _, err := c.writeRecord(recordTypeHandshake, hs.hello.marshal()); err != nil {
-		return err
-	}
-
-	msg, err := c.readHandshake()
-	if err != nil {
-		return err
-	}
-
-	serverHello, ok := msg.(*serverHelloMsg)
-	if !ok {
-		c.sendAlert(alertUnexpectedMessage)
-		return unexpectedMessageError(serverHello, msg)
-	}
-	hs.serverHello = serverHello
-
-	if err := hs.checkServerHelloOrHRR(); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (hs *clientHandshakeStateTLS13) processServerHello() error {
-	c := hs.c
-
-	if bytes.Equal(hs.serverHello.random, helloRetryRequestRandom) {
-		c.sendAlert(alertUnexpectedMessage)
-		return errors.New("tls: server sent two HelloRetryRequest messages")
-	}
-
-	if len(hs.serverHello.cookie) != 0 {
-		c.sendAlert(alertUnsupportedExtension)
-		return errors.New("tls: server sent a cookie in a normal ServerHello")
-	}
-
-	if hs.serverHello.selectedGroup != 0 {
-		c.sendAlert(alertDecodeError)
-		return errors.New("tls: malformed key_share extension")
-	}
-
-	if hs.serverHello.serverShare.group == 0 {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: server did not send a key share")
-	}
-	if sentID, _ := curveIDForCurve(hs.ecdheKey.Curve()); hs.serverHello.serverShare.group != sentID {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: server selected unsupported group")
-	}
-
-	if !hs.serverHello.selectedIdentityPresent {
-		return nil
-	}
-
-	if int(hs.serverHello.selectedIdentity) >= len(hs.hello.pskIdentities) {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: server selected an invalid PSK")
-	}
-
-	if len(hs.hello.pskIdentities) != 1 || hs.session == nil {
-		return c.sendAlert(alertInternalError)
-	}
-	pskSuite := cipherSuiteTLS13ByID(hs.session.cipherSuite)
-	if pskSuite == nil {
-		return c.sendAlert(alertInternalError)
-	}
-	if pskSuite.hash != hs.suite.hash {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: server selected an invalid PSK and cipher suite pair")
-	}
-
-	hs.usingPSK = true
-	c.didResume = true
-	c.peerCertificates = hs.session.serverCertificates
-	c.verifiedChains = hs.session.verifiedChains
-	c.ocspResponse = hs.session.ocspResponse
-	c.scts = hs.session.scts
-	return nil
-}
-
-func (hs *clientHandshakeStateTLS13) establishHandshakeKeys() error {
-	c := hs.c
-
-	peerKey, err := hs.ecdheKey.Curve().NewPublicKey(hs.serverHello.serverShare.data)
-	if err != nil {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: invalid server key share")
-	}
-	sharedKey, err := hs.ecdheKey.ECDH(peerKey)
-	if err != nil {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: invalid server key share")
-	}
-
-	earlySecret := hs.earlySecret
-	if !hs.usingPSK {
-		earlySecret = hs.suite.extract(nil, nil)
-	}
-	handshakeSecret := hs.suite.extract(sharedKey,
-		hs.suite.deriveSecret(earlySecret, "derived", nil))
-
-	clientSecret := hs.suite.deriveSecret(handshakeSecret,
-		clientHandshakeTrafficLabel, hs.transcript)
-	c.out.setTrafficSecret(hs.suite, clientSecret)
-	serverSecret := hs.suite.deriveSecret(handshakeSecret,
-		serverHandshakeTrafficLabel, hs.transcript)
-	c.in.setTrafficSecret(hs.suite, serverSecret)
-
-	err = c.config.writeKeyLog(keyLogLabelClientHandshake, hs.hello.random, clientSecret)
-	if err != nil {
-		c.sendAlert(alertInternalError)
-		return err
-	}
-	err = c.config.writeKeyLog(keyLogLabelServerHandshake, hs.hello.random, serverSecret)
-	if err != nil {
-		c.sendAlert(alertInternalError)
-		return err
-	}
-
-	hs.masterSecret = hs.suite.extract(nil,
-		hs.suite.deriveSecret(handshakeSecret, "derived", nil))
-
-	return nil
-}
-
-func (hs *clientHandshakeStateTLS13) readServerParameters() error {
-	c := hs.c
-
-	msg, err := c.readHandshake()
-	if err != nil {
-		return err
-	}
-
-	encryptedExtensions, ok := msg.(*encryptedExtensionsMsg)
-	if !ok {
-		c.sendAlert(alertUnexpectedMessage)
-		return unexpectedMessageError(encryptedExtensions, msg)
-	}
-	hs.transcript.Write(encryptedExtensions.marshal())
-
-	if err := checkALPN(hs.hello.alpnProtocols, encryptedExtensions.alpnProtocol); err != nil {
-		c.sendAlert(alertUnsupportedExtension)
-		return err
-	}
-	c.clientProtocol = encryptedExtensions.alpnProtocol
-
-	return nil
-}
-
-func (hs *clientHandshakeStateTLS13) readServerCertificate() error {
-	c := hs.c
-
-	// Either a PSK or a certificate is always used, but not both.
-	// See RFC 8446, Section 4.1.1.
-	if hs.usingPSK {
-		// Make sure the connection is still being verified whether or not this
-		// is a resumption. Resumptions currently don't reverify certificates so
-		// they don't call verifyServerCertificate. See Issue 31641.
-		if c.config.VerifyConnection != nil {
-			if err := c.config.VerifyConnection(c.connectionStateLocked()); err != nil {
-				c.sendAlert(alertBadCertificate)
-				return err
-			}
-		}
-		return nil
-	}
-
-	msg, err := c.readHandshake()
-	if err != nil {
-		return err
-	}
-
-	certReq, ok := msg.(*certificateRequestMsgTLS13)
-	if ok {
-		hs.transcript.Write(certReq.marshal())
-
-		hs.certReq = certReq
-
-		msg, err = c.readHandshake()
-		if err != nil {
-			return err
-		}
-	}
-
-	certMsg, ok := msg.(*certificateMsgTLS13)
-	if !ok {
-		c.sendAlert(alertUnexpectedMessage)
-		return unexpectedMessageError(certMsg, msg)
-	}
-	if len(certMsg.certificate.Certificate) == 0 {
-		c.sendAlert(alertDecodeError)
-		return errors.New("tls: received empty certificates message")
-	}
-	hs.transcript.Write(certMsg.marshal())
-
-	c.scts = certMsg.certificate.SignedCertificateTimestamps
-	c.ocspResponse = certMsg.certificate.OCSPStaple
-
-	if err := c.verifyServerCertificate(certMsg.certificate.Certificate); err != nil {
-		return err
-	}
-
-	msg, err = c.readHandshake()
-	if err != nil {
-		return err
-	}
-
-	certVerify, ok := msg.(*certificateVerifyMsg)
-	if !ok {
-		c.sendAlert(alertUnexpectedMessage)
-		return unexpectedMessageError(certVerify, msg)
-	}
-
-	// See RFC 8446, Section 4.4.3.
-	if !isSupportedSignatureAlgorithm(certVerify.signatureAlgorithm, supportedSignatureAlgorithms()) {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: certificate used with invalid signature algorithm")
-	}
-	sigType, sigHash, err := typeAndHashFromSignatureScheme(certVerify.signatureAlgorithm)
-	if err != nil {
-		return c.sendAlert(alertInternalError)
-	}
-	if sigType == signaturePKCS1v15 || sigHash == crypto.SHA1 {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: certificate used with invalid signature algorithm")
-	}
-	signed := signedMessage(sigHash, serverSignatureContext, hs.transcript)
-	if err := verifyHandshakeSignature(sigType, c.peerCertificates[0].PublicKey,
-		sigHash, signed, certVerify.signature); err != nil {
-		c.sendAlert(alertDecryptError)
-		return errors.New("tls: invalid signature by the server certificate: " + err.Error())
-	}
-
-	hs.transcript.Write(certVerify.marshal())
-
-	return nil
-}
-
-func (hs *clientHandshakeStateTLS13) readServerFinished() error {
-	c := hs.c
-
-	msg, err := c.readHandshake()
-	if err != nil {
-		return err
-	}
-
-	finished, ok := msg.(*finishedMsg)
-	if !ok {
-		c.sendAlert(alertUnexpectedMessage)
-		return unexpectedMessageError(finished, msg)
-	}
-
-	expectedMAC := hs.suite.finishedHash(c.in.trafficSecret, hs.transcript)
-	if !hmac.Equal(expectedMAC, finished.verifyData) {
-		c.sendAlert(alertDecryptError)
-		return errors.New("tls: invalid server finished hash")
-	}
-
-	hs.transcript.Write(finished.marshal())
-
-	// Derive secrets that take context through the server Finished.
-
-	hs.trafficSecret = hs.suite.deriveSecret(hs.masterSecret,
-		clientApplicationTrafficLabel, hs.transcript)
-	serverSecret := hs.suite.deriveSecret(hs.masterSecret,
-		serverApplicationTrafficLabel, hs.transcript)
-	c.in.setTrafficSecret(hs.suite, serverSecret)
-
-	err = c.config.writeKeyLog(keyLogLabelClientTraffic, hs.hello.random, hs.trafficSecret)
-	if err != nil {
-		c.sendAlert(alertInternalError)
-		return err
-	}
-	err = c.config.writeKeyLog(keyLogLabelServerTraffic, hs.hello.random, serverSecret)
-	if err != nil {
-		c.sendAlert(alertInternalError)
-		return err
-	}
-
-	c.ekm = hs.suite.exportKeyingMaterial(hs.masterSecret, hs.transcript)
-
-	return nil
-}
-
-func (hs *clientHandshakeStateTLS13) sendClientCertificate() error {
-	c := hs.c
-
-	if hs.certReq == nil {
-		return nil
-	}
-
-	cert, err := c.getClientCertificate(&CertificateRequestInfo{
-		AcceptableCAs:    hs.certReq.certificateAuthorities,
-		SignatureSchemes: hs.certReq.supportedSignatureAlgorithms,
-		Version:          c.vers,
-		ctx:              hs.ctx,
-	})
-	if err != nil {
-		return err
-	}
-
-	certMsg := new(certificateMsgTLS13)
-
-	certMsg.certificate = *cert
-	certMsg.scts = hs.certReq.scts && len(cert.SignedCertificateTimestamps) > 0
-	certMsg.ocspStapling = hs.certReq.ocspStapling && len(cert.OCSPStaple) > 0
-
-	hs.transcript.Write(certMsg.marshal())
-	if _, err := c.writeRecord(recordTypeHandshake, certMsg.marshal()); err != nil {
-		return err
-	}
-
-	// If we sent an empty certificate message, skip the CertificateVerify.
-	if len(cert.Certificate) == 0 {
-		return nil
-	}
-
-	certVerifyMsg := new(certificateVerifyMsg)
-	certVerifyMsg.hasSignatureAlgorithm = true
-
-	certVerifyMsg.signatureAlgorithm, err = selectSignatureScheme(c.vers, cert, hs.certReq.supportedSignatureAlgorithms)
-	if err != nil {
-		// getClientCertificate returned a certificate incompatible with the
-		// CertificateRequestInfo supported signature algorithms.
-		c.sendAlert(alertHandshakeFailure)
-		return err
-	}
-
-	sigType, sigHash, err := typeAndHashFromSignatureScheme(certVerifyMsg.signatureAlgorithm)
-	if err != nil {
-		return c.sendAlert(alertInternalError)
-	}
-
-	signed := signedMessage(sigHash, clientSignatureContext, hs.transcript)
-	signOpts := crypto.SignerOpts(sigHash)
-	if sigType == signatureRSAPSS {
-		signOpts = &rsa.PSSOptions{SaltLength: rsa.PSSSaltLengthEqualsHash, Hash: sigHash}
-	}
-	sig, err := cert.PrivateKey.(crypto.Signer).Sign(c.config.rand(), signed, signOpts)
-	if err != nil {
-		c.sendAlert(alertInternalError)
-		return errors.New("tls: failed to sign handshake: " + err.Error())
-	}
-	certVerifyMsg.signature = sig
-
-	hs.transcript.Write(certVerifyMsg.marshal())
-	if _, err := c.writeRecord(recordTypeHandshake, certVerifyMsg.marshal()); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (hs *clientHandshakeStateTLS13) sendClientFinished() error {
-	c := hs.c
-
-	finished := &finishedMsg{
-		verifyData: hs.suite.finishedHash(c.out.trafficSecret, hs.transcript),
-	}
-
-	hs.transcript.Write(finished.marshal())
-	if _, err := c.writeRecord(recordTypeHandshake, finished.marshal()); err != nil {
-		return err
-	}
-
-	c.out.setTrafficSecret(hs.suite, hs.trafficSecret)
-
-	if !c.config.SessionTicketsDisabled && c.config.ClientSessionCache != nil {
-		c.resumptionSecret = hs.suite.deriveSecret(hs.masterSecret,
-			resumptionLabel, hs.transcript)
-	}
-
-	return nil
-}
-
-func (c *Conn) handleNewSessionTicket(msg *newSessionTicketMsgTLS13) error {
-	if !c.isClient {
-		c.sendAlert(alertUnexpectedMessage)
-		return errors.New("tls: received new session ticket from a client")
-	}
-
-	if c.config.SessionTicketsDisabled || c.config.ClientSessionCache == nil {
-		return nil
-	}
-
-	// See RFC 8446, Section 4.6.1.
-	if msg.lifetime == 0 {
-		return nil
-	}
-	lifetime := time.Duration(msg.lifetime) * time.Second
-	if lifetime > maxSessionTicketLifetime {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: received a session ticket with invalid lifetime")
-	}
-
-	cipherSuite := cipherSuiteTLS13ByID(c.cipherSuite)
-	if cipherSuite == nil || c.resumptionSecret == nil {
-		return c.sendAlert(alertInternalError)
-	}
-
-	// Save the resumption_master_secret and nonce instead of deriving the PSK
-	// to do the least amount of work on NewSessionTicket messages before we
-	// know if the ticket will be used. Forward secrecy of resumed connections
-	// is guaranteed by the requirement for pskModeDHE.
-	session := &ClientSessionState{
-		sessionTicket:      msg.label,
-		vers:               c.vers,
-		cipherSuite:        c.cipherSuite,
-		masterSecret:       c.resumptionSecret,
-		serverCertificates: c.peerCertificates,
-		verifiedChains:     c.verifiedChains,
-		receivedAt:         c.config.time(),
-		nonce:              msg.nonce,
-		useBy:              c.config.time().Add(lifetime),
-		ageAdd:             msg.ageAdd,
-		ocspResponse:       c.ocspResponse,
-		scts:               c.scts,
-	}
-
-	cacheKey := clientSessionCacheKey(c.conn.RemoteAddr(), c.config)
-	c.config.ClientSessionCache.Put(cacheKey, session)
-
-	return nil
-}

transport/shadowtls/tls/handshake_server.go

@@ -1,880 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package tls
-
-import (
-	"context"
-	"crypto"
-	"crypto/ecdsa"
-	"crypto/ed25519"
-	"crypto/rsa"
-	"crypto/subtle"
-	"crypto/x509"
-	"errors"
-	"fmt"
-	"hash"
-	"io"
-	"time"
-)
-
-// serverHandshakeState contains details of a server handshake in progress.
-// It's discarded once the handshake has completed.
-type serverHandshakeState struct {
-	c            *Conn
-	ctx          context.Context
-	clientHello  *clientHelloMsg
-	hello        *serverHelloMsg
-	suite        *cipherSuite
-	ecdheOk      bool
-	ecSignOk     bool
-	rsaDecryptOk bool
-	rsaSignOk    bool
-	sessionState *sessionState
-	finishedHash finishedHash
-	masterSecret []byte
-	cert         *Certificate
-}
-
-// serverHandshake performs a TLS handshake as a server.
-func (c *Conn) serverHandshake(ctx context.Context) error {
-	clientHello, err := c.readClientHello(ctx)
-	if err != nil {
-		return err
-	}
-
-	if c.vers == VersionTLS13 {
-		hs := serverHandshakeStateTLS13{
-			c:           c,
-			ctx:         ctx,
-			clientHello: clientHello,
-		}
-		return hs.handshake()
-	}
-
-	hs := serverHandshakeState{
-		c:           c,
-		ctx:         ctx,
-		clientHello: clientHello,
-	}
-	return hs.handshake()
-}
-
-func (hs *serverHandshakeState) handshake() error {
-	c := hs.c
-
-	if err := hs.processClientHello(); err != nil {
-		return err
-	}
-
-	// For an overview of TLS handshaking, see RFC 5246, Section 7.3.
-	c.buffering = true
-	if hs.checkForResumption() {
-		// The client has included a session ticket and so we do an abbreviated handshake.
-		c.didResume = true
-		if err := hs.doResumeHandshake(); err != nil {
-			return err
-		}
-		if err := hs.establishKeys(); err != nil {
-			return err
-		}
-		if err := hs.sendSessionTicket(); err != nil {
-			return err
-		}
-		if err := hs.sendFinished(c.serverFinished[:]); err != nil {
-			return err
-		}
-		if _, err := c.flush(); err != nil {
-			return err
-		}
-		c.clientFinishedIsFirst = false
-		if err := hs.readFinished(nil); err != nil {
-			return err
-		}
-	} else {
-		// The client didn't include a session ticket, or it wasn't
-		// valid so we do a full handshake.
-		if err := hs.pickCipherSuite(); err != nil {
-			return err
-		}
-		if err := hs.doFullHandshake(); err != nil {
-			return err
-		}
-		if err := hs.establishKeys(); err != nil {
-			return err
-		}
-		if err := hs.readFinished(c.clientFinished[:]); err != nil {
-			return err
-		}
-		c.clientFinishedIsFirst = true
-		c.buffering = true
-		if err := hs.sendSessionTicket(); err != nil {
-			return err
-		}
-		if err := hs.sendFinished(nil); err != nil {
-			return err
-		}
-		if _, err := c.flush(); err != nil {
-			return err
-		}
-	}
-
-	c.ekm = ekmFromMasterSecret(c.vers, hs.suite, hs.masterSecret, hs.clientHello.random, hs.hello.random)
-	c.isHandshakeComplete.Store(true)
-
-	return nil
-}
-
-// readClientHello reads a ClientHello message and selects the protocol version.
-func (c *Conn) readClientHello(ctx context.Context) (*clientHelloMsg, error) {
-	msg, err := c.readHandshake()
-	if err != nil {
-		return nil, err
-	}
-	clientHello, ok := msg.(*clientHelloMsg)
-	if !ok {
-		c.sendAlert(alertUnexpectedMessage)
-		return nil, unexpectedMessageError(clientHello, msg)
-	}
-
-	var configForClient *Config
-	originalConfig := c.config
-	if c.config.GetConfigForClient != nil {
-		chi := clientHelloInfo(ctx, c, clientHello)
-		if configForClient, err = c.config.GetConfigForClient(chi); err != nil {
-			c.sendAlert(alertInternalError)
-			return nil, err
-		} else if configForClient != nil {
-			c.config = configForClient
-		}
-	}
-	c.ticketKeys = originalConfig.ticketKeys(configForClient)
-
-	clientVersions := clientHello.supportedVersions
-	if len(clientHello.supportedVersions) == 0 {
-		clientVersions = supportedVersionsFromMax(clientHello.vers)
-	}
-	c.vers, ok = c.config.mutualVersion(roleServer, clientVersions)
-	if !ok {
-		c.sendAlert(alertProtocolVersion)
-		return nil, fmt.Errorf("tls: client offered only unsupported versions: %x", clientVersions)
-	}
-	c.haveVers = true
-	c.in.version = c.vers
-	c.out.version = c.vers
-
-	return clientHello, nil
-}
-
-func (hs *serverHandshakeState) processClientHello() error {
-	c := hs.c
-
-	hs.hello = new(serverHelloMsg)
-	hs.hello.vers = c.vers
-
-	foundCompression := false
-	// We only support null compression, so check that the client offered it.
-	for _, compression := range hs.clientHello.compressionMethods {
-		if compression == compressionNone {
-			foundCompression = true
-			break
-		}
-	}
-
-	if !foundCompression {
-		c.sendAlert(alertHandshakeFailure)
-		return errors.New("tls: client does not support uncompressed connections")
-	}
-
-	hs.hello.random = make([]byte, 32)
-	serverRandom := hs.hello.random
-	// Downgrade protection canaries. See RFC 8446, Section 4.1.3.
-	maxVers := c.config.maxSupportedVersion(roleServer)
-	if maxVers >= VersionTLS12 && c.vers < maxVers || testingOnlyForceDowngradeCanary {
-		if c.vers == VersionTLS12 {
-			copy(serverRandom[24:], downgradeCanaryTLS12)
-		} else {
-			copy(serverRandom[24:], downgradeCanaryTLS11)
-		}
-		serverRandom = serverRandom[:24]
-	}
-	_, err := io.ReadFull(c.config.rand(), serverRandom)
-	if err != nil {
-		c.sendAlert(alertInternalError)
-		return err
-	}
-
-	if len(hs.clientHello.secureRenegotiation) != 0 {
-		c.sendAlert(alertHandshakeFailure)
-		return errors.New("tls: initial handshake had non-empty renegotiation extension")
-	}
-
-	hs.hello.secureRenegotiationSupported = hs.clientHello.secureRenegotiationSupported
-	hs.hello.compressionMethod = compressionNone
-	if len(hs.clientHello.serverName) > 0 {
-		c.serverName = hs.clientHello.serverName
-	}
-
-	selectedProto, err := negotiateALPN(c.config.NextProtos, hs.clientHello.alpnProtocols)
-	if err != nil {
-		c.sendAlert(alertNoApplicationProtocol)
-		return err
-	}
-	hs.hello.alpnProtocol = selectedProto
-	c.clientProtocol = selectedProto
-
-	hs.cert, err = c.config.getCertificate(clientHelloInfo(hs.ctx, c, hs.clientHello))
-	if err != nil {
-		if err == errNoCertificates {
-			c.sendAlert(alertUnrecognizedName)
-		} else {
-			c.sendAlert(alertInternalError)
-		}
-		return err
-	}
-	if hs.clientHello.scts {
-		hs.hello.scts = hs.cert.SignedCertificateTimestamps
-	}
-
-	hs.ecdheOk = supportsECDHE(c.config, hs.clientHello.supportedCurves, hs.clientHello.supportedPoints)
-
-	if hs.ecdheOk && len(hs.clientHello.supportedPoints) > 0 {
-		// Although omitting the ec_point_formats extension is permitted, some
-		// old OpenSSL version will refuse to handshake if not present.
-		//
-		// Per RFC 4492, section 5.1.2, implementations MUST support the
-		// uncompressed point format. See golang.org/issue/31943.
-		hs.hello.supportedPoints = []uint8{pointFormatUncompressed}
-	}
-
-	if priv, ok := hs.cert.PrivateKey.(crypto.Signer); ok {
-		switch priv.Public().(type) {
-		case *ecdsa.PublicKey:
-			hs.ecSignOk = true
-		case ed25519.PublicKey:
-			hs.ecSignOk = true
-		case *rsa.PublicKey:
-			hs.rsaSignOk = true
-		default:
-			c.sendAlert(alertInternalError)
-			return fmt.Errorf("tls: unsupported signing key type (%T)", priv.Public())
-		}
-	}
-	if priv, ok := hs.cert.PrivateKey.(crypto.Decrypter); ok {
-		switch priv.Public().(type) {
-		case *rsa.PublicKey:
-			hs.rsaDecryptOk = true
-		default:
-			c.sendAlert(alertInternalError)
-			return fmt.Errorf("tls: unsupported decryption key type (%T)", priv.Public())
-		}
-	}
-
-	return nil
-}
-
-// negotiateALPN picks a shared ALPN protocol that both sides support in server
-// preference order. If ALPN is not configured or the peer doesn't support it,
-// it returns "" and no error.
-func negotiateALPN(serverProtos, clientProtos []string) (string, error) {
-	if len(serverProtos) == 0 || len(clientProtos) == 0 {
-		return "", nil
-	}
-	var http11fallback bool
-	for _, s := range serverProtos {
-		for _, c := range clientProtos {
-			if s == c {
-				return s, nil
-			}
-			if s == "h2" && c == "http/1.1" {
-				http11fallback = true
-			}
-		}
-	}
-	// As a special case, let http/1.1 clients connect to h2 servers as if they
-	// didn't support ALPN. We used not to enforce protocol overlap, so over
-	// time a number of HTTP servers were configured with only "h2", but
-	// expected to accept connections from "http/1.1" clients. See Issue 46310.
-	if http11fallback {
-		return "", nil
-	}
-	return "", fmt.Errorf("tls: client requested unsupported application protocols (%s)", clientProtos)
-}
-
-// supportsECDHE returns whether ECDHE key exchanges can be used with this
-// pre-TLS 1.3 client.
-func supportsECDHE(c *Config, supportedCurves []CurveID, supportedPoints []uint8) bool {
-	supportsCurve := false
-	for _, curve := range supportedCurves {
-		if c.supportsCurve(curve) {
-			supportsCurve = true
-			break
-		}
-	}
-
-	supportsPointFormat := false
-	for _, pointFormat := range supportedPoints {
-		if pointFormat == pointFormatUncompressed {
-			supportsPointFormat = true
-			break
-		}
-	}
-	// Per RFC 8422, Section 5.1.2, if the Supported Point Formats extension is
-	// missing, uncompressed points are supported. If supportedPoints is empty,
-	// the extension must be missing, as an empty extension body is rejected by
-	// the parser. See https://go.dev/issue/49126.
-	if len(supportedPoints) == 0 {
-		supportsPointFormat = true
-	}
-
-	return supportsCurve && supportsPointFormat
-}
-
-func (hs *serverHandshakeState) pickCipherSuite() error {
-	c := hs.c
-
-	preferenceOrder := cipherSuitesPreferenceOrder
-	if !hasAESGCMHardwareSupport || !aesgcmPreferred(hs.clientHello.cipherSuites) {
-		preferenceOrder = cipherSuitesPreferenceOrderNoAES
-	}
-
-	configCipherSuites := c.config.cipherSuites()
-	preferenceList := make([]uint16, 0, len(configCipherSuites))
-	for _, suiteID := range preferenceOrder {
-		for _, id := range configCipherSuites {
-			if id == suiteID {
-				preferenceList = append(preferenceList, id)
-				break
-			}
-		}
-	}
-
-	hs.suite = selectCipherSuite(preferenceList, hs.clientHello.cipherSuites, hs.cipherSuiteOk)
-	if hs.suite == nil {
-		c.sendAlert(alertHandshakeFailure)
-		return errors.New("tls: no cipher suite supported by both client and server")
-	}
-	c.cipherSuite = hs.suite.id
-
-	for _, id := range hs.clientHello.cipherSuites {
-		if id == TLS_FALLBACK_SCSV {
-			// The client is doing a fallback connection. See RFC 7507.
-			if hs.clientHello.vers < c.config.maxSupportedVersion(roleServer) {
-				c.sendAlert(alertInappropriateFallback)
-				return errors.New("tls: client using inappropriate protocol fallback")
-			}
-			break
-		}
-	}
-
-	return nil
-}
-
-func (hs *serverHandshakeState) cipherSuiteOk(c *cipherSuite) bool {
-	if c.flags&suiteECDHE != 0 {
-		if !hs.ecdheOk {
-			return false
-		}
-		if c.flags&suiteECSign != 0 {
-			if !hs.ecSignOk {
-				return false
-			}
-		} else if !hs.rsaSignOk {
-			return false
-		}
-	} else if !hs.rsaDecryptOk {
-		return false
-	}
-	if hs.c.vers < VersionTLS12 && c.flags&suiteTLS12 != 0 {
-		return false
-	}
-	return true
-}
-
-// checkForResumption reports whether we should perform resumption on this connection.
-func (hs *serverHandshakeState) checkForResumption() bool {
-	c := hs.c
-
-	if c.config.SessionTicketsDisabled {
-		return false
-	}
-
-	plaintext, usedOldKey := c.decryptTicket(hs.clientHello.sessionTicket)
-	if plaintext == nil {
-		return false
-	}
-	hs.sessionState = &sessionState{usedOldKey: usedOldKey}
-	ok := hs.sessionState.unmarshal(plaintext)
-	if !ok {
-		return false
-	}
-
-	createdAt := time.Unix(int64(hs.sessionState.createdAt), 0)
-	if c.config.time().Sub(createdAt) > maxSessionTicketLifetime {
-		return false
-	}
-
-	// Never resume a session for a different TLS version.
-	if c.vers != hs.sessionState.vers {
-		return false
-	}
-
-	cipherSuiteOk := false
-	// Check that the client is still offering the ciphersuite in the session.
-	for _, id := range hs.clientHello.cipherSuites {
-		if id == hs.sessionState.cipherSuite {
-			cipherSuiteOk = true
-			break
-		}
-	}
-	if !cipherSuiteOk {
-		return false
-	}
-
-	// Check that we also support the ciphersuite from the session.
-	hs.suite = selectCipherSuite([]uint16{hs.sessionState.cipherSuite},
-		c.config.cipherSuites(), hs.cipherSuiteOk)
-	if hs.suite == nil {
-		return false
-	}
-
-	sessionHasClientCerts := len(hs.sessionState.certificates) != 0
-	needClientCerts := requiresClientCert(c.config.ClientAuth)
-	if needClientCerts && !sessionHasClientCerts {
-		return false
-	}
-	if sessionHasClientCerts && c.config.ClientAuth == NoClientCert {
-		return false
-	}
-
-	return true
-}
-
-func (hs *serverHandshakeState) doResumeHandshake() error {
-	c := hs.c
-
-	hs.hello.cipherSuite = hs.suite.id
-	c.cipherSuite = hs.suite.id
-	// We echo the client's session ID in the ServerHello to let it know
-	// that we're doing a resumption.
-	hs.hello.sessionId = hs.clientHello.sessionId
-	hs.hello.ticketSupported = hs.sessionState.usedOldKey
-	hs.finishedHash = newFinishedHash(c.vers, hs.suite)
-	hs.finishedHash.discardHandshakeBuffer()
-	hs.finishedHash.Write(hs.clientHello.marshal())
-	hs.finishedHash.Write(hs.hello.marshal())
-	if _, err := c.writeRecord(recordTypeHandshake, hs.hello.marshal()); err != nil {
-		return err
-	}
-
-	if err := c.processCertsFromClient(Certificate{
-		Certificate: hs.sessionState.certificates,
-	}); err != nil {
-		return err
-	}
-
-	if c.config.VerifyConnection != nil {
-		if err := c.config.VerifyConnection(c.connectionStateLocked()); err != nil {
-			c.sendAlert(alertBadCertificate)
-			return err
-		}
-	}
-
-	hs.masterSecret = hs.sessionState.masterSecret
-
-	return nil
-}
-
-func (hs *serverHandshakeState) doFullHandshake() error {
-	c := hs.c
-
-	if hs.clientHello.ocspStapling && len(hs.cert.OCSPStaple) > 0 {
-		hs.hello.ocspStapling = true
-	}
-
-	hs.hello.ticketSupported = hs.clientHello.ticketSupported && !c.config.SessionTicketsDisabled
-	hs.hello.cipherSuite = hs.suite.id
-
-	hs.finishedHash = newFinishedHash(hs.c.vers, hs.suite)
-	if c.config.ClientAuth == NoClientCert {
-		// No need to keep a full record of the handshake if client
-		// certificates won't be used.
-		hs.finishedHash.discardHandshakeBuffer()
-	}
-	hs.finishedHash.Write(hs.clientHello.marshal())
-	hs.finishedHash.Write(hs.hello.marshal())
-	if _, err := c.writeRecord(recordTypeHandshake, hs.hello.marshal()); err != nil {
-		return err
-	}
-
-	certMsg := new(certificateMsg)
-	certMsg.certificates = hs.cert.Certificate
-	hs.finishedHash.Write(certMsg.marshal())
-	if _, err := c.writeRecord(recordTypeHandshake, certMsg.marshal()); err != nil {
-		return err
-	}
-
-	if hs.hello.ocspStapling {
-		certStatus := new(certificateStatusMsg)
-		certStatus.response = hs.cert.OCSPStaple
-		hs.finishedHash.Write(certStatus.marshal())
-		if _, err := c.writeRecord(recordTypeHandshake, certStatus.marshal()); err != nil {
-			return err
-		}
-	}
-
-	keyAgreement := hs.suite.ka(c.vers)
-	skx, err := keyAgreement.generateServerKeyExchange(c.config, hs.cert, hs.clientHello, hs.hello)
-	if err != nil {
-		c.sendAlert(alertHandshakeFailure)
-		return err
-	}
-	if skx != nil {
-		hs.finishedHash.Write(skx.marshal())
-		if _, err := c.writeRecord(recordTypeHandshake, skx.marshal()); err != nil {
-			return err
-		}
-	}
-
-	var certReq *certificateRequestMsg
-	if c.config.ClientAuth >= RequestClientCert {
-		// Request a client certificate
-		certReq = new(certificateRequestMsg)
-		certReq.certificateTypes = []byte{
-			byte(certTypeRSASign),
-			byte(certTypeECDSASign),
-		}
-		if c.vers >= VersionTLS12 {
-			certReq.hasSignatureAlgorithm = true
-			certReq.supportedSignatureAlgorithms = supportedSignatureAlgorithms()
-		}
-
-		// An empty list of certificateAuthorities signals to
-		// the client that it may send any certificate in response
-		// to our request. When we know the CAs we trust, then
-		// we can send them down, so that the client can choose
-		// an appropriate certificate to give to us.
-		if c.config.ClientCAs != nil {
-			certReq.certificateAuthorities = c.config.ClientCAs.Subjects()
-		}
-		hs.finishedHash.Write(certReq.marshal())
-		if _, err := c.writeRecord(recordTypeHandshake, certReq.marshal()); err != nil {
-			return err
-		}
-	}
-
-	helloDone := new(serverHelloDoneMsg)
-	hs.finishedHash.Write(helloDone.marshal())
-	if _, err := c.writeRecord(recordTypeHandshake, helloDone.marshal()); err != nil {
-		return err
-	}
-
-	if _, err := c.flush(); err != nil {
-		return err
-	}
-
-	var pub crypto.PublicKey // public key for client auth, if any
-
-	msg, err := c.readHandshake()
-	if err != nil {
-		return err
-	}
-
-	// If we requested a client certificate, then the client must send a
-	// certificate message, even if it's empty.
-	if c.config.ClientAuth >= RequestClientCert {
-		certMsg, ok := msg.(*certificateMsg)
-		if !ok {
-			c.sendAlert(alertUnexpectedMessage)
-			return unexpectedMessageError(certMsg, msg)
-		}
-		hs.finishedHash.Write(certMsg.marshal())
-
-		if err := c.processCertsFromClient(Certificate{
-			Certificate: certMsg.certificates,
-		}); err != nil {
-			return err
-		}
-		if len(certMsg.certificates) != 0 {
-			pub = c.peerCertificates[0].PublicKey
-		}
-
-		msg, err = c.readHandshake()
-		if err != nil {
-			return err
-		}
-	}
-	if c.config.VerifyConnection != nil {
-		if err := c.config.VerifyConnection(c.connectionStateLocked()); err != nil {
-			c.sendAlert(alertBadCertificate)
-			return err
-		}
-	}
-
-	// Get client key exchange
-	ckx, ok := msg.(*clientKeyExchangeMsg)
-	if !ok {
-		c.sendAlert(alertUnexpectedMessage)
-		return unexpectedMessageError(ckx, msg)
-	}
-	hs.finishedHash.Write(ckx.marshal())
-
-	preMasterSecret, err := keyAgreement.processClientKeyExchange(c.config, hs.cert, ckx, c.vers)
-	if err != nil {
-		c.sendAlert(alertHandshakeFailure)
-		return err
-	}
-	hs.masterSecret = masterFromPreMasterSecret(c.vers, hs.suite, preMasterSecret, hs.clientHello.random, hs.hello.random)
-	if err := c.config.writeKeyLog(keyLogLabelTLS12, hs.clientHello.random, hs.masterSecret); err != nil {
-		c.sendAlert(alertInternalError)
-		return err
-	}
-
-	// If we received a client cert in response to our certificate request message,
-	// the client will send us a certificateVerifyMsg immediately after the
-	// clientKeyExchangeMsg. This message is a digest of all preceding
-	// handshake-layer messages that is signed using the private key corresponding
-	// to the client's certificate. This allows us to verify that the client is in
-	// possession of the private key of the certificate.
-	if len(c.peerCertificates) > 0 {
-		msg, err = c.readHandshake()
-		if err != nil {
-			return err
-		}
-		certVerify, ok := msg.(*certificateVerifyMsg)
-		if !ok {
-			c.sendAlert(alertUnexpectedMessage)
-			return unexpectedMessageError(certVerify, msg)
-		}
-
-		var sigType uint8
-		var sigHash crypto.Hash
-		if c.vers >= VersionTLS12 {
-			if !isSupportedSignatureAlgorithm(certVerify.signatureAlgorithm, certReq.supportedSignatureAlgorithms) {
-				c.sendAlert(alertIllegalParameter)
-				return errors.New("tls: client certificate used with invalid signature algorithm")
-			}
-			sigType, sigHash, err = typeAndHashFromSignatureScheme(certVerify.signatureAlgorithm)
-			if err != nil {
-				return c.sendAlert(alertInternalError)
-			}
-		} else {
-			sigType, sigHash, err = legacyTypeAndHashFromPublicKey(pub)
-			if err != nil {
-				c.sendAlert(alertIllegalParameter)
-				return err
-			}
-		}
-
-		signed := hs.finishedHash.hashForClientCertificate(sigType, sigHash)
-		if err := verifyHandshakeSignature(sigType, pub, sigHash, signed, certVerify.signature); err != nil {
-			c.sendAlert(alertDecryptError)
-			return errors.New("tls: invalid signature by the client certificate: " + err.Error())
-		}
-
-		hs.finishedHash.Write(certVerify.marshal())
-	}
-
-	hs.finishedHash.discardHandshakeBuffer()
-
-	return nil
-}
-
-func (hs *serverHandshakeState) establishKeys() error {
-	c := hs.c
-
-	clientMAC, serverMAC, clientKey, serverKey, clientIV, serverIV := keysFromMasterSecret(c.vers, hs.suite, hs.masterSecret, hs.clientHello.random, hs.hello.random, hs.suite.macLen, hs.suite.keyLen, hs.suite.ivLen)
-
-	var clientCipher, serverCipher any
-	var clientHash, serverHash hash.Hash
-
-	if hs.suite.aead == nil {
-		clientCipher = hs.suite.cipher(clientKey, clientIV, true /* for reading */)
-		clientHash = hs.suite.mac(clientMAC)
-		serverCipher = hs.suite.cipher(serverKey, serverIV, false /* not for reading */)
-		serverHash = hs.suite.mac(serverMAC)
-	} else {
-		clientCipher = hs.suite.aead(clientKey, clientIV)
-		serverCipher = hs.suite.aead(serverKey, serverIV)
-	}
-
-	c.in.prepareCipherSpec(c.vers, clientCipher, clientHash)
-	c.out.prepareCipherSpec(c.vers, serverCipher, serverHash)
-
-	return nil
-}
-
-func (hs *serverHandshakeState) readFinished(out []byte) error {
-	c := hs.c
-
-	if err := c.readChangeCipherSpec(); err != nil {
-		return err
-	}
-
-	msg, err := c.readHandshake()
-	if err != nil {
-		return err
-	}
-	clientFinished, ok := msg.(*finishedMsg)
-	if !ok {
-		c.sendAlert(alertUnexpectedMessage)
-		return unexpectedMessageError(clientFinished, msg)
-	}
-
-	verify := hs.finishedHash.clientSum(hs.masterSecret)
-	if len(verify) != len(clientFinished.verifyData) ||
-		subtle.ConstantTimeCompare(verify, clientFinished.verifyData) != 1 {
-		c.sendAlert(alertHandshakeFailure)
-		return errors.New("tls: client's Finished message is incorrect")
-	}
-
-	hs.finishedHash.Write(clientFinished.marshal())
-	copy(out, verify)
-	return nil
-}
-
-func (hs *serverHandshakeState) sendSessionTicket() error {
-	// ticketSupported is set in a resumption handshake if the
-	// ticket from the client was encrypted with an old session
-	// ticket key and thus a refreshed ticket should be sent.
-	if !hs.hello.ticketSupported {
-		return nil
-	}
-
-	c := hs.c
-	m := new(newSessionTicketMsg)
-
-	createdAt := uint64(c.config.time().Unix())
-	if hs.sessionState != nil {
-		// If this is re-wrapping an old key, then keep
-		// the original time it was created.
-		createdAt = hs.sessionState.createdAt
-	}
-
-	var certsFromClient [][]byte
-	for _, cert := range c.peerCertificates {
-		certsFromClient = append(certsFromClient, cert.Raw)
-	}
-	state := sessionState{
-		vers:         c.vers,
-		cipherSuite:  hs.suite.id,
-		createdAt:    createdAt,
-		masterSecret: hs.masterSecret,
-		certificates: certsFromClient,
-	}
-	var err error
-	m.ticket, err = c.encryptTicket(state.marshal())
-	if err != nil {
-		return err
-	}
-
-	hs.finishedHash.Write(m.marshal())
-	if _, err := c.writeRecord(recordTypeHandshake, m.marshal()); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (hs *serverHandshakeState) sendFinished(out []byte) error {
-	c := hs.c
-
-	if _, err := c.writeRecord(recordTypeChangeCipherSpec, []byte{1}); err != nil {
-		return err
-	}
-
-	finished := new(finishedMsg)
-	finished.verifyData = hs.finishedHash.serverSum(hs.masterSecret)
-	hs.finishedHash.Write(finished.marshal())
-	if _, err := c.writeRecord(recordTypeHandshake, finished.marshal()); err != nil {
-		return err
-	}
-
-	copy(out, finished.verifyData)
-
-	return nil
-}
-
-// processCertsFromClient takes a chain of client certificates either from a
-// Certificates message or from a sessionState and verifies them. It returns
-// the public key of the leaf certificate.
-func (c *Conn) processCertsFromClient(certificate Certificate) error {
-	certificates := certificate.Certificate
-	certs := make([]*x509.Certificate, len(certificates))
-	var err error
-	for i, asn1Data := range certificates {
-		if certs[i], err = x509.ParseCertificate(asn1Data); err != nil {
-			c.sendAlert(alertBadCertificate)
-			return errors.New("tls: failed to parse client certificate: " + err.Error())
-		}
-	}
-
-	if len(certs) == 0 && requiresClientCert(c.config.ClientAuth) {
-		c.sendAlert(alertBadCertificate)
-		return errors.New("tls: client didn't provide a certificate")
-	}
-
-	if c.config.ClientAuth >= VerifyClientCertIfGiven && len(certs) > 0 {
-		opts := x509.VerifyOptions{
-			Roots:         c.config.ClientCAs,
-			CurrentTime:   c.config.time(),
-			Intermediates: x509.NewCertPool(),
-			KeyUsages:     []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth},
-		}
-
-		for _, cert := range certs[1:] {
-			opts.Intermediates.AddCert(cert)
-		}
-
-		chains, err := certs[0].Verify(opts)
-		if err != nil {
-			c.sendAlert(alertBadCertificate)
-			return &CertificateVerificationError{UnverifiedCertificates: certs, Err: err}
-		}
-
-		c.verifiedChains = chains
-	}
-
-	c.peerCertificates = certs
-	c.ocspResponse = certificate.OCSPStaple
-	c.scts = certificate.SignedCertificateTimestamps
-
-	if len(certs) > 0 {
-		switch certs[0].PublicKey.(type) {
-		case *ecdsa.PublicKey, *rsa.PublicKey, ed25519.PublicKey:
-		default:
-			c.sendAlert(alertUnsupportedCertificate)
-			return fmt.Errorf("tls: client certificate contains an unsupported public key of type %T", certs[0].PublicKey)
-		}
-	}
-
-	if c.config.VerifyPeerCertificate != nil {
-		if err := c.config.VerifyPeerCertificate(certificates, c.verifiedChains); err != nil {
-			c.sendAlert(alertBadCertificate)
-			return err
-		}
-	}
-
-	return nil
-}
-
-func clientHelloInfo(ctx context.Context, c *Conn, clientHello *clientHelloMsg) *ClientHelloInfo {
-	supportedVersions := clientHello.supportedVersions
-	if len(clientHello.supportedVersions) == 0 {
-		supportedVersions = supportedVersionsFromMax(clientHello.vers)
-	}
-
-	return &ClientHelloInfo{
-		CipherSuites:      clientHello.cipherSuites,
-		ServerName:        clientHello.serverName,
-		SupportedCurves:   clientHello.supportedCurves,
-		SupportedPoints:   clientHello.supportedPoints,
-		SignatureSchemes:  clientHello.supportedSignatureAlgorithms,
-		SupportedProtos:   clientHello.alpnProtocols,
-		SupportedVersions: supportedVersions,
-		Conn:              c.conn,
-		config:            c.config,
-		ctx:               ctx,
-	}
-}

transport/shadowtls/tls/handshake_server_tls13.go

@@ -1,880 +0,0 @@
-// Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package tls
-
-import (
-	"bytes"
-	"context"
-	"crypto"
-	"crypto/hmac"
-	"crypto/rsa"
-	"encoding/binary"
-	"errors"
-	"hash"
-	"io"
-	"time"
-)
-
-// maxClientPSKIdentities is the number of client PSK identities the server will
-// attempt to validate. It will ignore the rest not to let cheap ClientHello
-// messages cause too much work in session ticket decryption attempts.
-const maxClientPSKIdentities = 5
-
-type serverHandshakeStateTLS13 struct {
-	c               *Conn
-	ctx             context.Context
-	clientHello     *clientHelloMsg
-	hello           *serverHelloMsg
-	sentDummyCCS    bool
-	usingPSK        bool
-	suite           *cipherSuiteTLS13
-	cert            *Certificate
-	sigAlg          SignatureScheme
-	earlySecret     []byte
-	sharedKey       []byte
-	handshakeSecret []byte
-	masterSecret    []byte
-	trafficSecret   []byte // client_application_traffic_secret_0
-	transcript      hash.Hash
-	clientFinished  []byte
-}
-
-func (hs *serverHandshakeStateTLS13) handshake() error {
-	c := hs.c
-
-	if needFIPS() {
-		return errors.New("tls: internal error: TLS 1.3 reached in FIPS mode")
-	}
-
-	// For an overview of the TLS 1.3 handshake, see RFC 8446, Section 2.
-	if err := hs.processClientHello(); err != nil {
-		return err
-	}
-	if err := hs.checkForResumption(); err != nil {
-		return err
-	}
-	if err := hs.pickCertificate(); err != nil {
-		return err
-	}
-	c.buffering = true
-	if err := hs.sendServerParameters(); err != nil {
-		return err
-	}
-	if err := hs.sendServerCertificate(); err != nil {
-		return err
-	}
-	if err := hs.sendServerFinished(); err != nil {
-		return err
-	}
-	// Note that at this point we could start sending application data without
-	// waiting for the client's second flight, but the application might not
-	// expect the lack of replay protection of the ClientHello parameters.
-	if _, err := c.flush(); err != nil {
-		return err
-	}
-	if err := hs.readClientCertificate(); err != nil {
-		return err
-	}
-	if err := hs.readClientFinished(); err != nil {
-		return err
-	}
-
-	c.isHandshakeComplete.Store(true)
-
-	return nil
-}
-
-func (hs *serverHandshakeStateTLS13) processClientHello() error {
-	c := hs.c
-
-	hs.hello = new(serverHelloMsg)
-
-	// TLS 1.3 froze the ServerHello.legacy_version field, and uses
-	// supported_versions instead. See RFC 8446, sections 4.1.3 and 4.2.1.
-	hs.hello.vers = VersionTLS12
-	hs.hello.supportedVersion = c.vers
-
-	if len(hs.clientHello.supportedVersions) == 0 {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: client used the legacy version field to negotiate TLS 1.3")
-	}
-
-	// Abort if the client is doing a fallback and landing lower than what we
-	// support. See RFC 7507, which however does not specify the interaction
-	// with supported_versions. The only difference is that with
-	// supported_versions a client has a chance to attempt a [TLS 1.2, TLS 1.4]
-	// handshake in case TLS 1.3 is broken but 1.2 is not. Alas, in that case,
-	// it will have to drop the TLS_FALLBACK_SCSV protection if it falls back to
-	// TLS 1.2, because a TLS 1.3 server would abort here. The situation before
-	// supported_versions was not better because there was just no way to do a
-	// TLS 1.4 handshake without risking the server selecting TLS 1.3.
-	for _, id := range hs.clientHello.cipherSuites {
-		if id == TLS_FALLBACK_SCSV {
-			// Use c.vers instead of max(supported_versions) because an attacker
-			// could defeat this by adding an arbitrary high version otherwise.
-			if c.vers < c.config.maxSupportedVersion(roleServer) {
-				c.sendAlert(alertInappropriateFallback)
-				return errors.New("tls: client using inappropriate protocol fallback")
-			}
-			break
-		}
-	}
-
-	if len(hs.clientHello.compressionMethods) != 1 ||
-		hs.clientHello.compressionMethods[0] != compressionNone {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: TLS 1.3 client supports illegal compression methods")
-	}
-
-	hs.hello.random = make([]byte, 32)
-	if _, err := io.ReadFull(c.config.rand(), hs.hello.random); err != nil {
-		c.sendAlert(alertInternalError)
-		return err
-	}
-
-	if len(hs.clientHello.secureRenegotiation) != 0 {
-		c.sendAlert(alertHandshakeFailure)
-		return errors.New("tls: initial handshake had non-empty renegotiation extension")
-	}
-
-	if hs.clientHello.earlyData {
-		// See RFC 8446, Section 4.2.10 for the complicated behavior required
-		// here. The scenario is that a different server at our address offered
-		// to accept early data in the past, which we can't handle. For now, all
-		// 0-RTT enabled session tickets need to expire before a Go server can
-		// replace a server or join a pool. That's the same requirement that
-		// applies to mixing or replacing with any TLS 1.2 server.
-		c.sendAlert(alertUnsupportedExtension)
-		return errors.New("tls: client sent unexpected early data")
-	}
-
-	hs.hello.sessionId = hs.clientHello.sessionId
-	hs.hello.compressionMethod = compressionNone
-
-	preferenceList := defaultCipherSuitesTLS13
-	if !hasAESGCMHardwareSupport || !aesgcmPreferred(hs.clientHello.cipherSuites) {
-		preferenceList = defaultCipherSuitesTLS13NoAES
-	}
-	for _, suiteID := range preferenceList {
-		hs.suite = mutualCipherSuiteTLS13(hs.clientHello.cipherSuites, suiteID)
-		if hs.suite != nil {
-			break
-		}
-	}
-	if hs.suite == nil {
-		c.sendAlert(alertHandshakeFailure)
-		return errors.New("tls: no cipher suite supported by both client and server")
-	}
-	c.cipherSuite = hs.suite.id
-	hs.hello.cipherSuite = hs.suite.id
-	hs.transcript = hs.suite.hash.New()
-
-	// Pick the ECDHE group in server preference order, but give priority to
-	// groups with a key share, to avoid a HelloRetryRequest round-trip.
-	var selectedGroup CurveID
-	var clientKeyShare *keyShare
-GroupSelection:
-	for _, preferredGroup := range c.config.curvePreferences() {
-		for _, ks := range hs.clientHello.keyShares {
-			if ks.group == preferredGroup {
-				selectedGroup = ks.group
-				clientKeyShare = &ks
-				break GroupSelection
-			}
-		}
-		if selectedGroup != 0 {
-			continue
-		}
-		for _, group := range hs.clientHello.supportedCurves {
-			if group == preferredGroup {
-				selectedGroup = group
-				break
-			}
-		}
-	}
-	if selectedGroup == 0 {
-		c.sendAlert(alertHandshakeFailure)
-		return errors.New("tls: no ECDHE curve supported by both client and server")
-	}
-	if clientKeyShare == nil {
-		if err := hs.doHelloRetryRequest(selectedGroup); err != nil {
-			return err
-		}
-		clientKeyShare = &hs.clientHello.keyShares[0]
-	}
-
-	if _, ok := curveForCurveID(selectedGroup); !ok {
-		c.sendAlert(alertInternalError)
-		return errors.New("tls: CurvePreferences includes unsupported curve")
-	}
-	key, err := generateECDHEKey(c.config.rand(), selectedGroup)
-	if err != nil {
-		c.sendAlert(alertInternalError)
-		return err
-	}
-	hs.hello.serverShare = keyShare{group: selectedGroup, data: key.PublicKey().Bytes()}
-	peerKey, err := key.Curve().NewPublicKey(clientKeyShare.data)
-	if err != nil {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: invalid client key share")
-	}
-	hs.sharedKey, err = key.ECDH(peerKey)
-	if err != nil {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: invalid client key share")
-	}
-
-	c.serverName = hs.clientHello.serverName
-	return nil
-}
-
-func (hs *serverHandshakeStateTLS13) checkForResumption() error {
-	c := hs.c
-
-	if c.config.SessionTicketsDisabled {
-		return nil
-	}
-
-	modeOK := false
-	for _, mode := range hs.clientHello.pskModes {
-		if mode == pskModeDHE {
-			modeOK = true
-			break
-		}
-	}
-	if !modeOK {
-		return nil
-	}
-
-	if len(hs.clientHello.pskIdentities) != len(hs.clientHello.pskBinders) {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: invalid or missing PSK binders")
-	}
-	if len(hs.clientHello.pskIdentities) == 0 {
-		return nil
-	}
-
-	for i, identity := range hs.clientHello.pskIdentities {
-		if i >= maxClientPSKIdentities {
-			break
-		}
-
-		plaintext, _ := c.decryptTicket(identity.label)
-		if plaintext == nil {
-			continue
-		}
-		sessionState := new(sessionStateTLS13)
-		if ok := sessionState.unmarshal(plaintext); !ok {
-			continue
-		}
-
-		createdAt := time.Unix(int64(sessionState.createdAt), 0)
-		if c.config.time().Sub(createdAt) > maxSessionTicketLifetime {
-			continue
-		}
-
-		// We don't check the obfuscated ticket age because it's affected by
-		// clock skew and it's only a freshness signal useful for shrinking the
-		// window for replay attacks, which don't affect us as we don't do 0-RTT.
-
-		pskSuite := cipherSuiteTLS13ByID(sessionState.cipherSuite)
-		if pskSuite == nil || pskSuite.hash != hs.suite.hash {
-			continue
-		}
-
-		// PSK connections don't re-establish client certificates, but carry
-		// them over in the session ticket. Ensure the presence of client certs
-		// in the ticket is consistent with the configured requirements.
-		sessionHasClientCerts := len(sessionState.certificate.Certificate) != 0
-		needClientCerts := requiresClientCert(c.config.ClientAuth)
-		if needClientCerts && !sessionHasClientCerts {
-			continue
-		}
-		if sessionHasClientCerts && c.config.ClientAuth == NoClientCert {
-			continue
-		}
-
-		psk := hs.suite.expandLabel(sessionState.resumptionSecret, "resumption",
-			nil, hs.suite.hash.Size())
-		hs.earlySecret = hs.suite.extract(psk, nil)
-		binderKey := hs.suite.deriveSecret(hs.earlySecret, resumptionBinderLabel, nil)
-		// Clone the transcript in case a HelloRetryRequest was recorded.
-		transcript := cloneHash(hs.transcript, hs.suite.hash)
-		if transcript == nil {
-			c.sendAlert(alertInternalError)
-			return errors.New("tls: internal error: failed to clone hash")
-		}
-		transcript.Write(hs.clientHello.marshalWithoutBinders())
-		pskBinder := hs.suite.finishedHash(binderKey, transcript)
-		if !hmac.Equal(hs.clientHello.pskBinders[i], pskBinder) {
-			c.sendAlert(alertDecryptError)
-			return errors.New("tls: invalid PSK binder")
-		}
-
-		c.didResume = true
-		if err := c.processCertsFromClient(sessionState.certificate); err != nil {
-			return err
-		}
-
-		hs.hello.selectedIdentityPresent = true
-		hs.hello.selectedIdentity = uint16(i)
-		hs.usingPSK = true
-		return nil
-	}
-
-	return nil
-}
-
-// cloneHash uses the encoding.BinaryMarshaler and encoding.BinaryUnmarshaler
-// interfaces implemented by standard library hashes to clone the state of in
-// to a new instance of h. It returns nil if the operation fails.
-func cloneHash(in hash.Hash, h crypto.Hash) hash.Hash {
-	// Recreate the interface to avoid importing encoding.
-	type binaryMarshaler interface {
-		MarshalBinary() (data []byte, err error)
-		UnmarshalBinary(data []byte) error
-	}
-	marshaler, ok := in.(binaryMarshaler)
-	if !ok {
-		return nil
-	}
-	state, err := marshaler.MarshalBinary()
-	if err != nil {
-		return nil
-	}
-	out := h.New()
-	unmarshaler, ok := out.(binaryMarshaler)
-	if !ok {
-		return nil
-	}
-	if err := unmarshaler.UnmarshalBinary(state); err != nil {
-		return nil
-	}
-	return out
-}
-
-func (hs *serverHandshakeStateTLS13) pickCertificate() error {
-	c := hs.c
-
-	// Only one of PSK and certificates are used at a time.
-	if hs.usingPSK {
-		return nil
-	}
-
-	// signature_algorithms is required in TLS 1.3. See RFC 8446, Section 4.2.3.
-	if len(hs.clientHello.supportedSignatureAlgorithms) == 0 {
-		return c.sendAlert(alertMissingExtension)
-	}
-
-	certificate, err := c.config.getCertificate(clientHelloInfo(hs.ctx, c, hs.clientHello))
-	if err != nil {
-		if err == errNoCertificates {
-			c.sendAlert(alertUnrecognizedName)
-		} else {
-			c.sendAlert(alertInternalError)
-		}
-		return err
-	}
-	hs.sigAlg, err = selectSignatureScheme(c.vers, certificate, hs.clientHello.supportedSignatureAlgorithms)
-	if err != nil {
-		// getCertificate returned a certificate that is unsupported or
-		// incompatible with the client's signature algorithms.
-		c.sendAlert(alertHandshakeFailure)
-		return err
-	}
-	hs.cert = certificate
-
-	return nil
-}
-
-// sendDummyChangeCipherSpec sends a ChangeCipherSpec record for compatibility
-// with middleboxes that didn't implement TLS correctly. See RFC 8446, Appendix D.4.
-func (hs *serverHandshakeStateTLS13) sendDummyChangeCipherSpec() error {
-	if hs.sentDummyCCS {
-		return nil
-	}
-	hs.sentDummyCCS = true
-
-	_, err := hs.c.writeRecord(recordTypeChangeCipherSpec, []byte{1})
-	return err
-}
-
-func (hs *serverHandshakeStateTLS13) doHelloRetryRequest(selectedGroup CurveID) error {
-	c := hs.c
-
-	// The first ClientHello gets double-hashed into the transcript upon a
-	// HelloRetryRequest. See RFC 8446, Section 4.4.1.
-	hs.transcript.Write(hs.clientHello.marshal())
-	chHash := hs.transcript.Sum(nil)
-	hs.transcript.Reset()
-	hs.transcript.Write([]byte{typeMessageHash, 0, 0, uint8(len(chHash))})
-	hs.transcript.Write(chHash)
-
-	helloRetryRequest := &serverHelloMsg{
-		vers:              hs.hello.vers,
-		random:            helloRetryRequestRandom,
-		sessionId:         hs.hello.sessionId,
-		cipherSuite:       hs.hello.cipherSuite,
-		compressionMethod: hs.hello.compressionMethod,
-		supportedVersion:  hs.hello.supportedVersion,
-		selectedGroup:     selectedGroup,
-	}
-
-	hs.transcript.Write(helloRetryRequest.marshal())
-	if _, err := c.writeRecord(recordTypeHandshake, helloRetryRequest.marshal()); err != nil {
-		return err
-	}
-
-	if err := hs.sendDummyChangeCipherSpec(); err != nil {
-		return err
-	}
-
-	msg, err := c.readHandshake()
-	if err != nil {
-		return err
-	}
-
-	clientHello, ok := msg.(*clientHelloMsg)
-	if !ok {
-		c.sendAlert(alertUnexpectedMessage)
-		return unexpectedMessageError(clientHello, msg)
-	}
-
-	if len(clientHello.keyShares) != 1 || clientHello.keyShares[0].group != selectedGroup {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: client sent invalid key share in second ClientHello")
-	}
-
-	if clientHello.earlyData {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: client indicated early data in second ClientHello")
-	}
-
-	if illegalClientHelloChange(clientHello, hs.clientHello) {
-		c.sendAlert(alertIllegalParameter)
-		return errors.New("tls: client illegally modified second ClientHello")
-	}
-
-	hs.clientHello = clientHello
-	return nil
-}
-
-// illegalClientHelloChange reports whether the two ClientHello messages are
-// different, with the exception of the changes allowed before and after a
-// HelloRetryRequest. See RFC 8446, Section 4.1.2.
-func illegalClientHelloChange(ch, ch1 *clientHelloMsg) bool {
-	if len(ch.supportedVersions) != len(ch1.supportedVersions) ||
-		len(ch.cipherSuites) != len(ch1.cipherSuites) ||
-		len(ch.supportedCurves) != len(ch1.supportedCurves) ||
-		len(ch.supportedSignatureAlgorithms) != len(ch1.supportedSignatureAlgorithms) ||
-		len(ch.supportedSignatureAlgorithmsCert) != len(ch1.supportedSignatureAlgorithmsCert) ||
-		len(ch.alpnProtocols) != len(ch1.alpnProtocols) {
-		return true
-	}
-	for i := range ch.supportedVersions {
-		if ch.supportedVersions[i] != ch1.supportedVersions[i] {
-			return true
-		}
-	}
-	for i := range ch.cipherSuites {
-		if ch.cipherSuites[i] != ch1.cipherSuites[i] {
-			return true
-		}
-	}
-	for i := range ch.supportedCurves {
-		if ch.supportedCurves[i] != ch1.supportedCurves[i] {
-			return true
-		}
-	}
-	for i := range ch.supportedSignatureAlgorithms {
-		if ch.supportedSignatureAlgorithms[i] != ch1.supportedSignatureAlgorithms[i] {
-			return true
-		}
-	}
-	for i := range ch.supportedSignatureAlgorithmsCert {
-		if ch.supportedSignatureAlgorithmsCert[i] != ch1.supportedSignatureAlgorithmsCert[i] {
-			return true
-		}
-	}
-	for i := range ch.alpnProtocols {
-		if ch.alpnProtocols[i] != ch1.alpnProtocols[i] {
-			return true
-		}
-	}
-	return ch.vers != ch1.vers ||
-		!bytes.Equal(ch.random, ch1.random) ||
-		!bytes.Equal(ch.sessionId, ch1.sessionId) ||
-		!bytes.Equal(ch.compressionMethods, ch1.compressionMethods) ||
-		ch.serverName != ch1.serverName ||
-		ch.ocspStapling != ch1.ocspStapling ||
-		!bytes.Equal(ch.supportedPoints, ch1.supportedPoints) ||
-		ch.ticketSupported != ch1.ticketSupported ||
-		!bytes.Equal(ch.sessionTicket, ch1.sessionTicket) ||
-		ch.secureRenegotiationSupported != ch1.secureRenegotiationSupported ||
-		!bytes.Equal(ch.secureRenegotiation, ch1.secureRenegotiation) ||
-		ch.scts != ch1.scts ||
-		!bytes.Equal(ch.cookie, ch1.cookie) ||
-		!bytes.Equal(ch.pskModes, ch1.pskModes)
-}
-
-func (hs *serverHandshakeStateTLS13) sendServerParameters() error {
-	c := hs.c
-
-	hs.transcript.Write(hs.clientHello.marshal())
-	hs.transcript.Write(hs.hello.marshal())
-	if _, err := c.writeRecord(recordTypeHandshake, hs.hello.marshal()); err != nil {
-		return err
-	}
-
-	if err := hs.sendDummyChangeCipherSpec(); err != nil {
-		return err
-	}
-
-	earlySecret := hs.earlySecret
-	if earlySecret == nil {
-		earlySecret = hs.suite.extract(nil, nil)
-	}
-	hs.handshakeSecret = hs.suite.extract(hs.sharedKey,
-		hs.suite.deriveSecret(earlySecret, "derived", nil))
-
-	clientSecret := hs.suite.deriveSecret(hs.handshakeSecret,
-		clientHandshakeTrafficLabel, hs.transcript)
-	c.in.setTrafficSecret(hs.suite, clientSecret)
-	serverSecret := hs.suite.deriveSecret(hs.handshakeSecret,
-		serverHandshakeTrafficLabel, hs.transcript)
-	c.out.setTrafficSecret(hs.suite, serverSecret)
-
-	err := c.config.writeKeyLog(keyLogLabelClientHandshake, hs.clientHello.random, clientSecret)
-	if err != nil {
-		c.sendAlert(alertInternalError)
-		return err
-	}
-	err = c.config.writeKeyLog(keyLogLabelServerHandshake, hs.clientHello.random, serverSecret)
-	if err != nil {
-		c.sendAlert(alertInternalError)
-		return err
-	}
-
-	encryptedExtensions := new(encryptedExtensionsMsg)
-
-	selectedProto, err := negotiateALPN(c.config.NextProtos, hs.clientHello.alpnProtocols)
-	if err != nil {
-		c.sendAlert(alertNoApplicationProtocol)
-		return err
-	}
-	encryptedExtensions.alpnProtocol = selectedProto
-	c.clientProtocol = selectedProto
-
-	hs.transcript.Write(encryptedExtensions.marshal())
-	if _, err := c.writeRecord(recordTypeHandshake, encryptedExtensions.marshal()); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (hs *serverHandshakeStateTLS13) requestClientCert() bool {
-	return hs.c.config.ClientAuth >= RequestClientCert && !hs.usingPSK
-}
-
-func (hs *serverHandshakeStateTLS13) sendServerCertificate() error {
-	c := hs.c
-
-	// Only one of PSK and certificates are used at a time.
-	if hs.usingPSK {
-		return nil
-	}
-
-	if hs.requestClientCert() {
-		// Request a client certificate
-		certReq := new(certificateRequestMsgTLS13)
-		certReq.ocspStapling = true
-		certReq.scts = true
-		certReq.supportedSignatureAlgorithms = supportedSignatureAlgorithms()
-		if c.config.ClientCAs != nil {
-			certReq.certificateAuthorities = c.config.ClientCAs.Subjects()
-		}
-
-		hs.transcript.Write(certReq.marshal())
-		if _, err := c.writeRecord(recordTypeHandshake, certReq.marshal()); err != nil {
-			return err
-		}
-	}
-
-	certMsg := new(certificateMsgTLS13)
-
-	certMsg.certificate = *hs.cert
-	certMsg.scts = hs.clientHello.scts && len(hs.cert.SignedCertificateTimestamps) > 0
-	certMsg.ocspStapling = hs.clientHello.ocspStapling && len(hs.cert.OCSPStaple) > 0
-
-	hs.transcript.Write(certMsg.marshal())
-	if _, err := c.writeRecord(recordTypeHandshake, certMsg.marshal()); err != nil {
-		return err
-	}
-
-	certVerifyMsg := new(certificateVerifyMsg)
-	certVerifyMsg.hasSignatureAlgorithm = true
-	certVerifyMsg.signatureAlgorithm = hs.sigAlg
-
-	sigType, sigHash, err := typeAndHashFromSignatureScheme(hs.sigAlg)
-	if err != nil {
-		return c.sendAlert(alertInternalError)
-	}
-
-	signed := signedMessage(sigHash, serverSignatureContext, hs.transcript)
-	signOpts := crypto.SignerOpts(sigHash)
-	if sigType == signatureRSAPSS {
-		signOpts = &rsa.PSSOptions{SaltLength: rsa.PSSSaltLengthEqualsHash, Hash: sigHash}
-	}
-	sig, err := hs.cert.PrivateKey.(crypto.Signer).Sign(c.config.rand(), signed, signOpts)
-	if err != nil {
-		public := hs.cert.PrivateKey.(crypto.Signer).Public()
-		if rsaKey, ok := public.(*rsa.PublicKey); ok && sigType == signatureRSAPSS &&
-			rsaKey.N.BitLen()/8 < sigHash.Size()*2+2 { // key too small for RSA-PSS
-			c.sendAlert(alertHandshakeFailure)
-		} else {
-			c.sendAlert(alertInternalError)
-		}
-		return errors.New("tls: failed to sign handshake: " + err.Error())
-	}
-	certVerifyMsg.signature = sig
-
-	hs.transcript.Write(certVerifyMsg.marshal())
-	if _, err := c.writeRecord(recordTypeHandshake, certVerifyMsg.marshal()); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (hs *serverHandshakeStateTLS13) sendServerFinished() error {
-	c := hs.c
-
-	finished := &finishedMsg{
-		verifyData: hs.suite.finishedHash(c.out.trafficSecret, hs.transcript),
-	}
-
-	hs.transcript.Write(finished.marshal())
-	if _, err := c.writeRecord(recordTypeHandshake, finished.marshal()); err != nil {
-		return err
-	}
-
-	// Derive secrets that take context through the server Finished.
-
-	hs.masterSecret = hs.suite.extract(nil,
-		hs.suite.deriveSecret(hs.handshakeSecret, "derived", nil))
-
-	hs.trafficSecret = hs.suite.deriveSecret(hs.masterSecret,
-		clientApplicationTrafficLabel, hs.transcript)
-	serverSecret := hs.suite.deriveSecret(hs.masterSecret,
-		serverApplicationTrafficLabel, hs.transcript)
-	c.out.setTrafficSecret(hs.suite, serverSecret)
-
-	err := c.config.writeKeyLog(keyLogLabelClientTraffic, hs.clientHello.random, hs.trafficSecret)
-	if err != nil {
-		c.sendAlert(alertInternalError)
-		return err
-	}
-	err = c.config.writeKeyLog(keyLogLabelServerTraffic, hs.clientHello.random, serverSecret)
-	if err != nil {
-		c.sendAlert(alertInternalError)
-		return err
-	}
-
-	c.ekm = hs.suite.exportKeyingMaterial(hs.masterSecret, hs.transcript)
-
-	// If we did not request client certificates, at this point we can
-	// precompute the client finished and roll the transcript forward to send
-	// session tickets in our first flight.
-	if !hs.requestClientCert() {
-		if err := hs.sendSessionTickets(); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (hs *serverHandshakeStateTLS13) shouldSendSessionTickets() bool {
-	if hs.c.config.SessionTicketsDisabled {
-		return false
-	}
-
-	// Don't send tickets the client wouldn't use. See RFC 8446, Section 4.2.9.
-	for _, pskMode := range hs.clientHello.pskModes {
-		if pskMode == pskModeDHE {
-			return true
-		}
-	}
-	return false
-}
-
-func (hs *serverHandshakeStateTLS13) sendSessionTickets() error {
-	c := hs.c
-
-	hs.clientFinished = hs.suite.finishedHash(c.in.trafficSecret, hs.transcript)
-	finishedMsg := &finishedMsg{
-		verifyData: hs.clientFinished,
-	}
-	hs.transcript.Write(finishedMsg.marshal())
-
-	if !hs.shouldSendSessionTickets() {
-		return nil
-	}
-
-	resumptionSecret := hs.suite.deriveSecret(hs.masterSecret,
-		resumptionLabel, hs.transcript)
-
-	m := new(newSessionTicketMsgTLS13)
-
-	var certsFromClient [][]byte
-	for _, cert := range c.peerCertificates {
-		certsFromClient = append(certsFromClient, cert.Raw)
-	}
-	state := sessionStateTLS13{
-		cipherSuite:      hs.suite.id,
-		createdAt:        uint64(c.config.time().Unix()),
-		resumptionSecret: resumptionSecret,
-		certificate: Certificate{
-			Certificate:                 certsFromClient,
-			OCSPStaple:                  c.ocspResponse,
-			SignedCertificateTimestamps: c.scts,
-		},
-	}
-	var err error
-	m.label, err = c.encryptTicket(state.marshal())
-	if err != nil {
-		return err
-	}
-	m.lifetime = uint32(maxSessionTicketLifetime / time.Second)
-
-	// ticket_age_add is a random 32-bit value. See RFC 8446, section 4.6.1
-	// The value is not stored anywhere; we never need to check the ticket age
-	// because 0-RTT is not supported.
-	ageAdd := make([]byte, 4)
-	_, err = hs.c.config.rand().Read(ageAdd)
-	if err != nil {
-		return err
-	}
-	m.ageAdd = binary.LittleEndian.Uint32(ageAdd)
-
-	// ticket_nonce, which must be unique per connection, is always left at
-	// zero because we only ever send one ticket per connection.
-
-	if _, err := c.writeRecord(recordTypeHandshake, m.marshal()); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (hs *serverHandshakeStateTLS13) readClientCertificate() error {
-	c := hs.c
-
-	if !hs.requestClientCert() {
-		// Make sure the connection is still being verified whether or not
-		// the server requested a client certificate.
-		if c.config.VerifyConnection != nil {
-			if err := c.config.VerifyConnection(c.connectionStateLocked()); err != nil {
-				c.sendAlert(alertBadCertificate)
-				return err
-			}
-		}
-		return nil
-	}
-
-	// If we requested a client certificate, then the client must send a
-	// certificate message. If it's empty, no CertificateVerify is sent.
-
-	msg, err := c.readHandshake()
-	if err != nil {
-		return err
-	}
-
-	certMsg, ok := msg.(*certificateMsgTLS13)
-	if !ok {
-		c.sendAlert(alertUnexpectedMessage)
-		return unexpectedMessageError(certMsg, msg)
-	}
-	hs.transcript.Write(certMsg.marshal())
-
-	if err := c.processCertsFromClient(certMsg.certificate); err != nil {
-		return err
-	}
-
-	if c.config.VerifyConnection != nil {
-		if err := c.config.VerifyConnection(c.connectionStateLocked()); err != nil {
-			c.sendAlert(alertBadCertificate)
-			return err
-		}
-	}
-
-	if len(certMsg.certificate.Certificate) != 0 {
-		msg, err = c.readHandshake()
-		if err != nil {
-			return err
-		}
-
-		certVerify, ok := msg.(*certificateVerifyMsg)
-		if !ok {
-			c.sendAlert(alertUnexpectedMessage)
-			return unexpectedMessageError(certVerify, msg)
-		}
-
-		// See RFC 8446, Section 4.4.3.
-		if !isSupportedSignatureAlgorithm(certVerify.signatureAlgorithm, supportedSignatureAlgorithms()) {
-			c.sendAlert(alertIllegalParameter)
-			return errors.New("tls: client certificate used with invalid signature algorithm")
-		}
-		sigType, sigHash, err := typeAndHashFromSignatureScheme(certVerify.signatureAlgorithm)
-		if err != nil {
-			return c.sendAlert(alertInternalError)
-		}
-		if sigType == signaturePKCS1v15 || sigHash == crypto.SHA1 {
-			c.sendAlert(alertIllegalParameter)
-			return errors.New("tls: client certificate used with invalid signature algorithm")
-		}
-		signed := signedMessage(sigHash, clientSignatureContext, hs.transcript)
-		if err := verifyHandshakeSignature(sigType, c.peerCertificates[0].PublicKey,
-			sigHash, signed, certVerify.signature); err != nil {
-			c.sendAlert(alertDecryptError)
-			return errors.New("tls: invalid signature by the client certificate: " + err.Error())
-		}
-
-		hs.transcript.Write(certVerify.marshal())
-	}
-
-	// If we waited until the client certificates to send session tickets, we
-	// are ready to do it now.
-	if err := hs.sendSessionTickets(); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (hs *serverHandshakeStateTLS13) readClientFinished() error {
-	c := hs.c
-
-	msg, err := c.readHandshake()
-	if err != nil {
-		return err
-	}
-
-	finished, ok := msg.(*finishedMsg)
-	if !ok {
-		c.sendAlert(alertUnexpectedMessage)
-		return unexpectedMessageError(finished, msg)
-	}
-
-	if !hmac.Equal(hs.clientFinished, finished.verifyData) {
-		c.sendAlert(alertDecryptError)
-		return errors.New("tls: invalid client finished hash")
-	}
-
-	c.in.setTrafficSecret(hs.suite, hs.trafficSecret)
-
-	return nil
-}

transport/shadowtls/tls/key_agreement.go

@@ -1,369 +0,0 @@
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package tls
-
-import (
-	"crypto"
-	"crypto/md5"
-	"crypto/rsa"
-	"crypto/sha1"
-	"crypto/x509"
-	"errors"
-	"fmt"
-	"io"
-
-	"crypto/ecdh"
-)
-
-// a keyAgreement implements the client and server side of a TLS key agreement
-// protocol by generating and processing key exchange messages.
-type keyAgreement interface {
-	// On the server side, the first two methods are called in order.
-
-	// In the case that the key agreement protocol doesn't use a
-	// ServerKeyExchange message, generateServerKeyExchange can return nil,
-	// nil.
-	generateServerKeyExchange(*Config, *Certificate, *clientHelloMsg, *serverHelloMsg) (*serverKeyExchangeMsg, error)
-	processClientKeyExchange(*Config, *Certificate, *clientKeyExchangeMsg, uint16) ([]byte, error)
-
-	// On the client side, the next two methods are called in order.
-
-	// This method may not be called if the server doesn't send a
-	// ServerKeyExchange message.
-	processServerKeyExchange(*Config, *clientHelloMsg, *serverHelloMsg, *x509.Certificate, *serverKeyExchangeMsg) error
-	generateClientKeyExchange(*Config, *clientHelloMsg, *x509.Certificate) ([]byte, *clientKeyExchangeMsg, error)
-}
-
-var (
-	errClientKeyExchange = errors.New("tls: invalid ClientKeyExchange message")
-	errServerKeyExchange = errors.New("tls: invalid ServerKeyExchange message")
-)
-
-// rsaKeyAgreement implements the standard TLS key agreement where the client
-// encrypts the pre-master secret to the server's public key.
-type rsaKeyAgreement struct{}
-
-func (ka rsaKeyAgreement) generateServerKeyExchange(config *Config, cert *Certificate, clientHello *clientHelloMsg, hello *serverHelloMsg) (*serverKeyExchangeMsg, error) {
-	return nil, nil
-}
-
-func (ka rsaKeyAgreement) processClientKeyExchange(config *Config, cert *Certificate, ckx *clientKeyExchangeMsg, version uint16) ([]byte, error) {
-	if len(ckx.ciphertext) < 2 {
-		return nil, errClientKeyExchange
-	}
-	ciphertextLen := int(ckx.ciphertext[0])<<8 | int(ckx.ciphertext[1])
-	if ciphertextLen != len(ckx.ciphertext)-2 {
-		return nil, errClientKeyExchange
-	}
-	ciphertext := ckx.ciphertext[2:]
-
-	priv, ok := cert.PrivateKey.(crypto.Decrypter)
-	if !ok {
-		return nil, errors.New("tls: certificate private key does not implement crypto.Decrypter")
-	}
-	// Perform constant time RSA PKCS #1 v1.5 decryption
-	preMasterSecret, err := priv.Decrypt(config.rand(), ciphertext, &rsa.PKCS1v15DecryptOptions{SessionKeyLen: 48})
-	if err != nil {
-		return nil, err
-	}
-	// We don't check the version number in the premaster secret. For one,
-	// by checking it, we would leak information about the validity of the
-	// encrypted pre-master secret. Secondly, it provides only a small
-	// benefit against a downgrade attack and some implementations send the
-	// wrong version anyway. See the discussion at the end of section
-	// 7.4.7.1 of RFC 4346.
-	return preMasterSecret, nil
-}
-
-func (ka rsaKeyAgreement) processServerKeyExchange(config *Config, clientHello *clientHelloMsg, serverHello *serverHelloMsg, cert *x509.Certificate, skx *serverKeyExchangeMsg) error {
-	return errors.New("tls: unexpected ServerKeyExchange")
-}
-
-func (ka rsaKeyAgreement) generateClientKeyExchange(config *Config, clientHello *clientHelloMsg, cert *x509.Certificate) ([]byte, *clientKeyExchangeMsg, error) {
-	preMasterSecret := make([]byte, 48)
-	preMasterSecret[0] = byte(clientHello.vers >> 8)
-	preMasterSecret[1] = byte(clientHello.vers)
-	_, err := io.ReadFull(config.rand(), preMasterSecret[2:])
-	if err != nil {
-		return nil, nil, err
-	}
-
-	rsaKey, ok := cert.PublicKey.(*rsa.PublicKey)
-	if !ok {
-		return nil, nil, errors.New("tls: server certificate contains incorrect key type for selected ciphersuite")
-	}
-	encrypted, err := rsa.EncryptPKCS1v15(config.rand(), rsaKey, preMasterSecret)
-	if err != nil {
-		return nil, nil, err
-	}
-	ckx := new(clientKeyExchangeMsg)
-	ckx.ciphertext = make([]byte, len(encrypted)+2)
-	ckx.ciphertext[0] = byte(len(encrypted) >> 8)
-	ckx.ciphertext[1] = byte(len(encrypted))
-	copy(ckx.ciphertext[2:], encrypted)
-	return preMasterSecret, ckx, nil
-}
-
-// sha1Hash calculates a SHA1 hash over the given byte slices.
-func sha1Hash(slices [][]byte) []byte {
-	hsha1 := sha1.New()
-	for _, slice := range slices {
-		hsha1.Write(slice)
-	}
-	return hsha1.Sum(nil)
-}
-
-// md5SHA1Hash implements TLS 1.0's hybrid hash function which consists of the
-// concatenation of an MD5 and SHA1 hash.
-func md5SHA1Hash(slices [][]byte) []byte {
-	md5sha1 := make([]byte, md5.Size+sha1.Size)
-	hmd5 := md5.New()
-	for _, slice := range slices {
-		hmd5.Write(slice)
-	}
-	copy(md5sha1, hmd5.Sum(nil))
-	copy(md5sha1[md5.Size:], sha1Hash(slices))
-	return md5sha1
-}
-
-// hashForServerKeyExchange hashes the given slices and returns their digest
-// using the given hash function (for >= TLS 1.2) or using a default based on
-// the sigType (for earlier TLS versions). For Ed25519 signatures, which don't
-// do pre-hashing, it returns the concatenation of the slices.
-func hashForServerKeyExchange(sigType uint8, hashFunc crypto.Hash, version uint16, slices ...[]byte) []byte {
-	if sigType == signatureEd25519 {
-		var signed []byte
-		for _, slice := range slices {
-			signed = append(signed, slice...)
-		}
-		return signed
-	}
-	if version >= VersionTLS12 {
-		h := hashFunc.New()
-		for _, slice := range slices {
-			h.Write(slice)
-		}
-		digest := h.Sum(nil)
-		return digest
-	}
-	if sigType == signatureECDSA {
-		return sha1Hash(slices)
-	}
-	return md5SHA1Hash(slices)
-}
-
-// ecdheKeyAgreement implements a TLS key agreement where the server
-// generates an ephemeral EC public/private key pair and signs it. The
-// pre-master secret is then calculated using ECDH. The signature may
-// be ECDSA, Ed25519 or RSA.
-type ecdheKeyAgreement struct {
-	version uint16
-	isRSA   bool
-	key     *ecdh.PrivateKey
-
-	// ckx and preMasterSecret are generated in processServerKeyExchange
-	// and returned in generateClientKeyExchange.
-	ckx             *clientKeyExchangeMsg
-	preMasterSecret []byte
-}
-
-func (ka *ecdheKeyAgreement) generateServerKeyExchange(config *Config, cert *Certificate, clientHello *clientHelloMsg, hello *serverHelloMsg) (*serverKeyExchangeMsg, error) {
-	var curveID CurveID
-	for _, c := range clientHello.supportedCurves {
-		if config.supportsCurve(c) {
-			curveID = c
-			break
-		}
-	}
-
-	if curveID == 0 {
-		return nil, errors.New("tls: no supported elliptic curves offered")
-	}
-	if _, ok := curveForCurveID(curveID); !ok {
-		return nil, errors.New("tls: CurvePreferences includes unsupported curve")
-	}
-
-	key, err := generateECDHEKey(config.rand(), curveID)
-	if err != nil {
-		return nil, err
-	}
-	ka.key = key
-
-	// See RFC 4492, Section 5.4.
-	ecdhePublic := key.PublicKey().Bytes()
-	serverECDHEParams := make([]byte, 1+2+1+len(ecdhePublic))
-	serverECDHEParams[0] = 3 // named curve
-	serverECDHEParams[1] = byte(curveID >> 8)
-	serverECDHEParams[2] = byte(curveID)
-	serverECDHEParams[3] = byte(len(ecdhePublic))
-	copy(serverECDHEParams[4:], ecdhePublic)
-
-	priv, ok := cert.PrivateKey.(crypto.Signer)
-	if !ok {
-		return nil, fmt.Errorf("tls: certificate private key of type %T does not implement crypto.Signer", cert.PrivateKey)
-	}
-
-	var signatureAlgorithm SignatureScheme
-	var sigType uint8
-	var sigHash crypto.Hash
-	if ka.version >= VersionTLS12 {
-		signatureAlgorithm, err = selectSignatureScheme(ka.version, cert, clientHello.supportedSignatureAlgorithms)
-		if err != nil {
-			return nil, err
-		}
-		sigType, sigHash, err = typeAndHashFromSignatureScheme(signatureAlgorithm)
-		if err != nil {
-			return nil, err
-		}
-	} else {
-		sigType, sigHash, err = legacyTypeAndHashFromPublicKey(priv.Public())
-		if err != nil {
-			return nil, err
-		}
-	}
-	if (sigType == signaturePKCS1v15 || sigType == signatureRSAPSS) != ka.isRSA {
-		return nil, errors.New("tls: certificate cannot be used with the selected cipher suite")
-	}
-
-	signed := hashForServerKeyExchange(sigType, sigHash, ka.version, clientHello.random, hello.random, serverECDHEParams)
-
-	signOpts := crypto.SignerOpts(sigHash)
-	if sigType == signatureRSAPSS {
-		signOpts = &rsa.PSSOptions{SaltLength: rsa.PSSSaltLengthEqualsHash, Hash: sigHash}
-	}
-	sig, err := priv.Sign(config.rand(), signed, signOpts)
-	if err != nil {
-		return nil, errors.New("tls: failed to sign ECDHE parameters: " + err.Error())
-	}
-
-	skx := new(serverKeyExchangeMsg)
-	sigAndHashLen := 0
-	if ka.version >= VersionTLS12 {
-		sigAndHashLen = 2
-	}
-	skx.key = make([]byte, len(serverECDHEParams)+sigAndHashLen+2+len(sig))
-	copy(skx.key, serverECDHEParams)
-	k := skx.key[len(serverECDHEParams):]
-	if ka.version >= VersionTLS12 {
-		k[0] = byte(signatureAlgorithm >> 8)
-		k[1] = byte(signatureAlgorithm)
-		k = k[2:]
-	}
-	k[0] = byte(len(sig) >> 8)
-	k[1] = byte(len(sig))
-	copy(k[2:], sig)
-
-	return skx, nil
-}
-
-func (ka *ecdheKeyAgreement) processClientKeyExchange(config *Config, cert *Certificate, ckx *clientKeyExchangeMsg, version uint16) ([]byte, error) {
-	if len(ckx.ciphertext) == 0 || int(ckx.ciphertext[0]) != len(ckx.ciphertext)-1 {
-		return nil, errClientKeyExchange
-	}
-
-	peerKey, err := ka.key.Curve().NewPublicKey(ckx.ciphertext[1:])
-	if err != nil {
-		return nil, errClientKeyExchange
-	}
-	preMasterSecret, err := ka.key.ECDH(peerKey)
-	if err != nil {
-		return nil, errClientKeyExchange
-	}
-
-	return preMasterSecret, nil
-}
-
-func (ka *ecdheKeyAgreement) processServerKeyExchange(config *Config, clientHello *clientHelloMsg, serverHello *serverHelloMsg, cert *x509.Certificate, skx *serverKeyExchangeMsg) error {
-	if len(skx.key) < 4 {
-		return errServerKeyExchange
-	}
-	if skx.key[0] != 3 { // named curve
-		return errors.New("tls: server selected unsupported curve")
-	}
-	curveID := CurveID(skx.key[1])<<8 | CurveID(skx.key[2])
-
-	publicLen := int(skx.key[3])
-	if publicLen+4 > len(skx.key) {
-		return errServerKeyExchange
-	}
-	serverECDHEParams := skx.key[:4+publicLen]
-	publicKey := serverECDHEParams[4:]
-
-	sig := skx.key[4+publicLen:]
-	if len(sig) < 2 {
-		return errServerKeyExchange
-	}
-
-	if _, ok := curveForCurveID(curveID); !ok {
-		return errors.New("tls: server selected unsupported curve")
-	}
-
-	key, err := generateECDHEKey(config.rand(), curveID)
-	if err != nil {
-		return err
-	}
-	ka.key = key
-
-	peerKey, err := key.Curve().NewPublicKey(publicKey)
-	if err != nil {
-		return errServerKeyExchange
-	}
-	ka.preMasterSecret, err = key.ECDH(peerKey)
-	if err != nil {
-		return errServerKeyExchange
-	}
-
-	ourPublicKey := key.PublicKey().Bytes()
-	ka.ckx = new(clientKeyExchangeMsg)
-	ka.ckx.ciphertext = make([]byte, 1+len(ourPublicKey))
-	ka.ckx.ciphertext[0] = byte(len(ourPublicKey))
-	copy(ka.ckx.ciphertext[1:], ourPublicKey)
-
-	var sigType uint8
-	var sigHash crypto.Hash
-	if ka.version >= VersionTLS12 {
-		signatureAlgorithm := SignatureScheme(sig[0])<<8 | SignatureScheme(sig[1])
-		sig = sig[2:]
-		if len(sig) < 2 {
-			return errServerKeyExchange
-		}
-
-		if !isSupportedSignatureAlgorithm(signatureAlgorithm, clientHello.supportedSignatureAlgorithms) {
-			return errors.New("tls: certificate used with invalid signature algorithm")
-		}
-		sigType, sigHash, err = typeAndHashFromSignatureScheme(signatureAlgorithm)
-		if err != nil {
-			return err
-		}
-	} else {
-		sigType, sigHash, err = legacyTypeAndHashFromPublicKey(cert.PublicKey)
-		if err != nil {
-			return err
-		}
-	}
-	if (sigType == signaturePKCS1v15 || sigType == signatureRSAPSS) != ka.isRSA {
-		return errServerKeyExchange
-	}
-
-	sigLen := int(sig[0])<<8 | int(sig[1])
-	if sigLen+2 != len(sig) {
-		return errServerKeyExchange
-	}
-	sig = sig[2:]
-
-	signed := hashForServerKeyExchange(sigType, sigHash, ka.version, clientHello.random, serverHello.random, serverECDHEParams)
-	if err := verifyHandshakeSignature(sigType, cert.PublicKey, sigHash, signed, sig); err != nil {
-		return errors.New("tls: invalid signature by the server certificate: " + err.Error())
-	}
-	return nil
-}
-
-func (ka *ecdheKeyAgreement) generateClientKeyExchange(config *Config, clientHello *clientHelloMsg, cert *x509.Certificate) ([]byte, *clientKeyExchangeMsg, error) {
-	if ka.ckx == nil {
-		return nil, nil, errors.New("tls: missing ServerKeyExchange message")
-	}
-
-	return ka.preMasterSecret, ka.ckx, nil
-}

transport/shadowtls/tls/key_schedule.go

@@ -1,141 +0,0 @@
-// Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package tls
-
-import (
-	"crypto/hmac"
-	"errors"
-	"hash"
-	"io"
-
-	"crypto/ecdh"
-	"golang.org/x/crypto/cryptobyte"
-	"golang.org/x/crypto/hkdf"
-)
-
-// This file contains the functions necessary to compute the TLS 1.3 key
-// schedule. See RFC 8446, Section 7.
-
-const (
-	resumptionBinderLabel         = "res binder"
-	clientHandshakeTrafficLabel   = "c hs traffic"
-	serverHandshakeTrafficLabel   = "s hs traffic"
-	clientApplicationTrafficLabel = "c ap traffic"
-	serverApplicationTrafficLabel = "s ap traffic"
-	exporterLabel                 = "exp master"
-	resumptionLabel               = "res master"
-	trafficUpdateLabel            = "traffic upd"
-)
-
-// expandLabel implements HKDF-Expand-Label from RFC 8446, Section 7.1.
-func (c *cipherSuiteTLS13) expandLabel(secret []byte, label string, context []byte, length int) []byte {
-	var hkdfLabel cryptobyte.Builder
-	hkdfLabel.AddUint16(uint16(length))
-	hkdfLabel.AddUint8LengthPrefixed(func(b *cryptobyte.Builder) {
-		b.AddBytes([]byte("tls13 "))
-		b.AddBytes([]byte(label))
-	})
-	hkdfLabel.AddUint8LengthPrefixed(func(b *cryptobyte.Builder) {
-		b.AddBytes(context)
-	})
-	out := make([]byte, length)
-	n, err := hkdf.Expand(c.hash.New, secret, hkdfLabel.BytesOrPanic()).Read(out)
-	if err != nil || n != length {
-		panic("tls: HKDF-Expand-Label invocation failed unexpectedly")
-	}
-	return out
-}
-
-// deriveSecret implements Derive-Secret from RFC 8446, Section 7.1.
-func (c *cipherSuiteTLS13) deriveSecret(secret []byte, label string, transcript hash.Hash) []byte {
-	if transcript == nil {
-		transcript = c.hash.New()
-	}
-	return c.expandLabel(secret, label, transcript.Sum(nil), c.hash.Size())
-}
-
-// extract implements HKDF-Extract with the cipher suite hash.
-func (c *cipherSuiteTLS13) extract(newSecret, currentSecret []byte) []byte {
-	if newSecret == nil {
-		newSecret = make([]byte, c.hash.Size())
-	}
-	return hkdf.Extract(c.hash.New, newSecret, currentSecret)
-}
-
-// nextTrafficSecret generates the next traffic secret, given the current one,
-// according to RFC 8446, Section 7.2.
-func (c *cipherSuiteTLS13) nextTrafficSecret(trafficSecret []byte) []byte {
-	return c.expandLabel(trafficSecret, trafficUpdateLabel, nil, c.hash.Size())
-}
-
-// trafficKey generates traffic keys according to RFC 8446, Section 7.3.
-func (c *cipherSuiteTLS13) trafficKey(trafficSecret []byte) (key, iv []byte) {
-	key = c.expandLabel(trafficSecret, "key", nil, c.keyLen)
-	iv = c.expandLabel(trafficSecret, "iv", nil, aeadNonceLength)
-	return
-}
-
-// finishedHash generates the Finished verify_data or PskBinderEntry according
-// to RFC 8446, Section 4.4.4. See sections 4.4 and 4.2.11.2 for the baseKey
-// selection.
-func (c *cipherSuiteTLS13) finishedHash(baseKey []byte, transcript hash.Hash) []byte {
-	finishedKey := c.expandLabel(baseKey, "finished", nil, c.hash.Size())
-	verifyData := hmac.New(c.hash.New, finishedKey)
-	verifyData.Write(transcript.Sum(nil))
-	return verifyData.Sum(nil)
-}
-
-// exportKeyingMaterial implements RFC5705 exporters for TLS 1.3 according to
-// RFC 8446, Section 7.5.
-func (c *cipherSuiteTLS13) exportKeyingMaterial(masterSecret []byte, transcript hash.Hash) func(string, []byte, int) ([]byte, error) {
-	expMasterSecret := c.deriveSecret(masterSecret, exporterLabel, transcript)
-	return func(label string, context []byte, length int) ([]byte, error) {
-		secret := c.deriveSecret(expMasterSecret, label, nil)
-		h := c.hash.New()
-		h.Write(context)
-		return c.expandLabel(secret, "exporter", h.Sum(nil), length), nil
-	}
-}
-
-// generateECDHEKey returns a PrivateKey that implements Diffie-Hellman
-// according to RFC 8446, Section 4.2.8.2.
-func generateECDHEKey(rand io.Reader, curveID CurveID) (*ecdh.PrivateKey, error) {
-	curve, ok := curveForCurveID(curveID)
-	if !ok {
-		return nil, errors.New("tls: internal error: unsupported curve")
-	}
-
-	return curve.GenerateKey(rand)
-}
-
-func curveForCurveID(id CurveID) (ecdh.Curve, bool) {
-	switch id {
-	case X25519:
-		return ecdh.X25519(), true
-	case CurveP256:
-		return ecdh.P256(), true
-	case CurveP384:
-		return ecdh.P384(), true
-	case CurveP521:
-		return ecdh.P521(), true
-	default:
-		return nil, false
-	}
-}
-
-func curveIDForCurve(curve ecdh.Curve) (CurveID, bool) {
-	switch curve {
-	case ecdh.X25519():
-		return X25519, true
-	case ecdh.P256():
-		return CurveP256, true
-	case ecdh.P384():
-		return CurveP384, true
-	case ecdh.P521():
-		return CurveP521, true
-	default:
-		return 0, false
-	}
-}

transport/shadowtls/tls/notboring.go

@@ -1,20 +0,0 @@
-// Copyright 2022 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build !boringcrypto
-
-package tls
-
-func needFIPS() bool { return false }
-
-func supportedSignatureAlgorithms() []SignatureScheme {
-	return defaultSupportedSignatureAlgorithms
-}
-
-func fipsMinVersion(c *Config) uint16          { panic("fipsMinVersion") }
-func fipsMaxVersion(c *Config) uint16          { panic("fipsMaxVersion") }
-func fipsCurvePreferences(c *Config) []CurveID { panic("fipsCurvePreferences") }
-func fipsCipherSuites(c *Config) []uint16      { panic("fipsCipherSuites") }
-
-var fipsSupportedSignatureAlgorithms []SignatureScheme

transport/shadowtls/tls/prf.go

@@ -1,285 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package tls
-
-import (
-	"crypto"
-	"crypto/hmac"
-	"crypto/md5"
-	"crypto/sha1"
-	"crypto/sha256"
-	"crypto/sha512"
-	"errors"
-	"fmt"
-	"hash"
-)
-
-// Split a premaster secret in two as specified in RFC 4346, Section 5.
-func splitPreMasterSecret(secret []byte) (s1, s2 []byte) {
-	s1 = secret[0 : (len(secret)+1)/2]
-	s2 = secret[len(secret)/2:]
-	return
-}
-
-// pHash implements the P_hash function, as defined in RFC 4346, Section 5.
-func pHash(result, secret, seed []byte, hash func() hash.Hash) {
-	h := hmac.New(hash, secret)
-	h.Write(seed)
-	a := h.Sum(nil)
-
-	j := 0
-	for j < len(result) {
-		h.Reset()
-		h.Write(a)
-		h.Write(seed)
-		b := h.Sum(nil)
-		copy(result[j:], b)
-		j += len(b)
-
-		h.Reset()
-		h.Write(a)
-		a = h.Sum(nil)
-	}
-}
-
-// prf10 implements the TLS 1.0 pseudo-random function, as defined in RFC 2246, Section 5.
-func prf10(result, secret, label, seed []byte) {
-	hashSHA1 := sha1.New
-	hashMD5 := md5.New
-
-	labelAndSeed := make([]byte, len(label)+len(seed))
-	copy(labelAndSeed, label)
-	copy(labelAndSeed[len(label):], seed)
-
-	s1, s2 := splitPreMasterSecret(secret)
-	pHash(result, s1, labelAndSeed, hashMD5)
-	result2 := make([]byte, len(result))
-	pHash(result2, s2, labelAndSeed, hashSHA1)
-
-	for i, b := range result2 {
-		result[i] ^= b
-	}
-}
-
-// prf12 implements the TLS 1.2 pseudo-random function, as defined in RFC 5246, Section 5.
-func prf12(hashFunc func() hash.Hash) func(result, secret, label, seed []byte) {
-	return func(result, secret, label, seed []byte) {
-		labelAndSeed := make([]byte, len(label)+len(seed))
-		copy(labelAndSeed, label)
-		copy(labelAndSeed[len(label):], seed)
-
-		pHash(result, secret, labelAndSeed, hashFunc)
-	}
-}
-
-const (
-	masterSecretLength   = 48 // Length of a master secret in TLS 1.1.
-	finishedVerifyLength = 12 // Length of verify_data in a Finished message.
-)
-
-var (
-	masterSecretLabel   = []byte("master secret")
-	keyExpansionLabel   = []byte("key expansion")
-	clientFinishedLabel = []byte("client finished")
-	serverFinishedLabel = []byte("server finished")
-)
-
-func prfAndHashForVersion(version uint16, suite *cipherSuite) (func(result, secret, label, seed []byte), crypto.Hash) {
-	switch version {
-	case VersionTLS10, VersionTLS11:
-		return prf10, crypto.Hash(0)
-	case VersionTLS12:
-		if suite.flags&suiteSHA384 != 0 {
-			return prf12(sha512.New384), crypto.SHA384
-		}
-		return prf12(sha256.New), crypto.SHA256
-	default:
-		panic("unknown version")
-	}
-}
-
-func prfForVersion(version uint16, suite *cipherSuite) func(result, secret, label, seed []byte) {
-	prf, _ := prfAndHashForVersion(version, suite)
-	return prf
-}
-
-// masterFromPreMasterSecret generates the master secret from the pre-master
-// secret. See RFC 5246, Section 8.1.
-func masterFromPreMasterSecret(version uint16, suite *cipherSuite, preMasterSecret, clientRandom, serverRandom []byte) []byte {
-	seed := make([]byte, 0, len(clientRandom)+len(serverRandom))
-	seed = append(seed, clientRandom...)
-	seed = append(seed, serverRandom...)
-
-	masterSecret := make([]byte, masterSecretLength)
-	prfForVersion(version, suite)(masterSecret, preMasterSecret, masterSecretLabel, seed)
-	return masterSecret
-}
-
-// keysFromMasterSecret generates the connection keys from the master
-// secret, given the lengths of the MAC key, cipher key and IV, as defined in
-// RFC 2246, Section 6.3.
-func keysFromMasterSecret(version uint16, suite *cipherSuite, masterSecret, clientRandom, serverRandom []byte, macLen, keyLen, ivLen int) (clientMAC, serverMAC, clientKey, serverKey, clientIV, serverIV []byte) {
-	seed := make([]byte, 0, len(serverRandom)+len(clientRandom))
-	seed = append(seed, serverRandom...)
-	seed = append(seed, clientRandom...)
-
-	n := 2*macLen + 2*keyLen + 2*ivLen
-	keyMaterial := make([]byte, n)
-	prfForVersion(version, suite)(keyMaterial, masterSecret, keyExpansionLabel, seed)
-	clientMAC = keyMaterial[:macLen]
-	keyMaterial = keyMaterial[macLen:]
-	serverMAC = keyMaterial[:macLen]
-	keyMaterial = keyMaterial[macLen:]
-	clientKey = keyMaterial[:keyLen]
-	keyMaterial = keyMaterial[keyLen:]
-	serverKey = keyMaterial[:keyLen]
-	keyMaterial = keyMaterial[keyLen:]
-	clientIV = keyMaterial[:ivLen]
-	keyMaterial = keyMaterial[ivLen:]
-	serverIV = keyMaterial[:ivLen]
-	return
-}
-
-func newFinishedHash(version uint16, cipherSuite *cipherSuite) finishedHash {
-	var buffer []byte
-	if version >= VersionTLS12 {
-		buffer = []byte{}
-	}
-
-	prf, hash := prfAndHashForVersion(version, cipherSuite)
-	if hash != 0 {
-		return finishedHash{hash.New(), hash.New(), nil, nil, buffer, version, prf}
-	}
-
-	return finishedHash{sha1.New(), sha1.New(), md5.New(), md5.New(), buffer, version, prf}
-}
-
-// A finishedHash calculates the hash of a set of handshake messages suitable
-// for including in a Finished message.
-type finishedHash struct {
-	client hash.Hash
-	server hash.Hash
-
-	// Prior to TLS 1.2, an additional MD5 hash is required.
-	clientMD5 hash.Hash
-	serverMD5 hash.Hash
-
-	// In TLS 1.2, a full buffer is sadly required.
-	buffer []byte
-
-	version uint16
-	prf     func(result, secret, label, seed []byte)
-}
-
-func (h *finishedHash) Write(msg []byte) (n int, err error) {
-	h.client.Write(msg)
-	h.server.Write(msg)
-
-	if h.version < VersionTLS12 {
-		h.clientMD5.Write(msg)
-		h.serverMD5.Write(msg)
-	}
-
-	if h.buffer != nil {
-		h.buffer = append(h.buffer, msg...)
-	}
-
-	return len(msg), nil
-}
-
-func (h finishedHash) Sum() []byte {
-	if h.version >= VersionTLS12 {
-		return h.client.Sum(nil)
-	}
-
-	out := make([]byte, 0, md5.Size+sha1.Size)
-	out = h.clientMD5.Sum(out)
-	return h.client.Sum(out)
-}
-
-// clientSum returns the contents of the verify_data member of a client's
-// Finished message.
-func (h finishedHash) clientSum(masterSecret []byte) []byte {
-	out := make([]byte, finishedVerifyLength)
-	h.prf(out, masterSecret, clientFinishedLabel, h.Sum())
-	return out
-}
-
-// serverSum returns the contents of the verify_data member of a server's
-// Finished message.
-func (h finishedHash) serverSum(masterSecret []byte) []byte {
-	out := make([]byte, finishedVerifyLength)
-	h.prf(out, masterSecret, serverFinishedLabel, h.Sum())
-	return out
-}
-
-// hashForClientCertificate returns the handshake messages so far, pre-hashed if
-// necessary, suitable for signing by a TLS client certificate.
-func (h finishedHash) hashForClientCertificate(sigType uint8, hashAlg crypto.Hash) []byte {
-	if (h.version >= VersionTLS12 || sigType == signatureEd25519) && h.buffer == nil {
-		panic("tls: handshake hash for a client certificate requested after discarding the handshake buffer")
-	}
-
-	if sigType == signatureEd25519 {
-		return h.buffer
-	}
-
-	if h.version >= VersionTLS12 {
-		hash := hashAlg.New()
-		hash.Write(h.buffer)
-		return hash.Sum(nil)
-	}
-
-	if sigType == signatureECDSA {
-		return h.server.Sum(nil)
-	}
-
-	return h.Sum()
-}
-
-// discardHandshakeBuffer is called when there is no more need to
-// buffer the entirety of the handshake messages.
-func (h *finishedHash) discardHandshakeBuffer() {
-	h.buffer = nil
-}
-
-// noExportedKeyingMaterial is used as a value of
-// ConnectionState.ekm when renegotiation is enabled and thus
-// we wish to fail all key-material export requests.
-func noExportedKeyingMaterial(label string, context []byte, length int) ([]byte, error) {
-	return nil, errors.New("crypto/tls: ExportKeyingMaterial is unavailable when renegotiation is enabled")
-}
-
-// ekmFromMasterSecret generates exported keying material as defined in RFC 5705.
-func ekmFromMasterSecret(version uint16, suite *cipherSuite, masterSecret, clientRandom, serverRandom []byte) func(string, []byte, int) ([]byte, error) {
-	return func(label string, context []byte, length int) ([]byte, error) {
-		switch label {
-		case "client finished", "server finished", "master secret", "key expansion":
-			// These values are reserved and may not be used.
-			return nil, fmt.Errorf("crypto/tls: reserved ExportKeyingMaterial label: %s", label)
-		}
-
-		seedLen := len(serverRandom) + len(clientRandom)
-		if context != nil {
-			seedLen += 2 + len(context)
-		}
-		seed := make([]byte, 0, seedLen)
-
-		seed = append(seed, clientRandom...)
-		seed = append(seed, serverRandom...)
-
-		if context != nil {
-			if len(context) >= 1<<16 {
-				return nil, fmt.Errorf("crypto/tls: ExportKeyingMaterial context too long")
-			}
-			seed = append(seed, byte(len(context)>>8), byte(len(context)))
-			seed = append(seed, context...)
-		}
-
-		keyMaterial := make([]byte, length)
-		prfForVersion(version, suite)(keyMaterial, masterSecret, []byte(label), seed)
-		return keyMaterial, nil
-	}
-}

transport/shadowtls/tls/ticket.go

@@ -1,185 +0,0 @@
-// Copyright 2012 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package tls
-
-import (
-	"bytes"
-	"crypto/aes"
-	"crypto/cipher"
-	"crypto/hmac"
-	"crypto/sha256"
-	"crypto/subtle"
-	"errors"
-	"io"
-
-	"golang.org/x/crypto/cryptobyte"
-)
-
-// sessionState contains the information that is serialized into a session
-// ticket in order to later resume a connection.
-type sessionState struct {
-	vers         uint16
-	cipherSuite  uint16
-	createdAt    uint64
-	masterSecret []byte // opaque master_secret<1..2^16-1>;
-	// struct { opaque certificate<1..2^24-1> } Certificate;
-	certificates [][]byte // Certificate certificate_list<0..2^24-1>;
-
-	// usedOldKey is true if the ticket from which this session came from
-	// was encrypted with an older key and thus should be refreshed.
-	usedOldKey bool
-}
-
-func (m *sessionState) marshal() []byte {
-	var b cryptobyte.Builder
-	b.AddUint16(m.vers)
-	b.AddUint16(m.cipherSuite)
-	addUint64(&b, m.createdAt)
-	b.AddUint16LengthPrefixed(func(b *cryptobyte.Builder) {
-		b.AddBytes(m.masterSecret)
-	})
-	b.AddUint24LengthPrefixed(func(b *cryptobyte.Builder) {
-		for _, cert := range m.certificates {
-			b.AddUint24LengthPrefixed(func(b *cryptobyte.Builder) {
-				b.AddBytes(cert)
-			})
-		}
-	})
-	return b.BytesOrPanic()
-}
-
-func (m *sessionState) unmarshal(data []byte) bool {
-	*m = sessionState{usedOldKey: m.usedOldKey}
-	s := cryptobyte.String(data)
-	if ok := s.ReadUint16(&m.vers) &&
-		s.ReadUint16(&m.cipherSuite) &&
-		readUint64(&s, &m.createdAt) &&
-		readUint16LengthPrefixed(&s, &m.masterSecret) &&
-		len(m.masterSecret) != 0; !ok {
-		return false
-	}
-	var certList cryptobyte.String
-	if !s.ReadUint24LengthPrefixed(&certList) {
-		return false
-	}
-	for !certList.Empty() {
-		var cert []byte
-		if !readUint24LengthPrefixed(&certList, &cert) {
-			return false
-		}
-		m.certificates = append(m.certificates, cert)
-	}
-	return s.Empty()
-}
-
-// sessionStateTLS13 is the content of a TLS 1.3 session ticket. Its first
-// version (revision = 0) doesn't carry any of the information needed for 0-RTT
-// validation and the nonce is always empty.
-type sessionStateTLS13 struct {
-	// uint8 version  = 0x0304;
-	// uint8 revision = 0;
-	cipherSuite      uint16
-	createdAt        uint64
-	resumptionSecret []byte      // opaque resumption_master_secret<1..2^8-1>;
-	certificate      Certificate // CertificateEntry certificate_list<0..2^24-1>;
-}
-
-func (m *sessionStateTLS13) marshal() []byte {
-	var b cryptobyte.Builder
-	b.AddUint16(VersionTLS13)
-	b.AddUint8(0) // revision
-	b.AddUint16(m.cipherSuite)
-	addUint64(&b, m.createdAt)
-	b.AddUint8LengthPrefixed(func(b *cryptobyte.Builder) {
-		b.AddBytes(m.resumptionSecret)
-	})
-	marshalCertificate(&b, m.certificate)
-	return b.BytesOrPanic()
-}
-
-func (m *sessionStateTLS13) unmarshal(data []byte) bool {
-	*m = sessionStateTLS13{}
-	s := cryptobyte.String(data)
-	var version uint16
-	var revision uint8
-	return s.ReadUint16(&version) &&
-		version == VersionTLS13 &&
-		s.ReadUint8(&revision) &&
-		revision == 0 &&
-		s.ReadUint16(&m.cipherSuite) &&
-		readUint64(&s, &m.createdAt) &&
-		readUint8LengthPrefixed(&s, &m.resumptionSecret) &&
-		len(m.resumptionSecret) != 0 &&
-		unmarshalCertificate(&s, &m.certificate) &&
-		s.Empty()
-}
-
-func (c *Conn) encryptTicket(state []byte) ([]byte, error) {
-	if len(c.ticketKeys) == 0 {
-		return nil, errors.New("tls: internal error: session ticket keys unavailable")
-	}
-
-	encrypted := make([]byte, ticketKeyNameLen+aes.BlockSize+len(state)+sha256.Size)
-	keyName := encrypted[:ticketKeyNameLen]
-	iv := encrypted[ticketKeyNameLen : ticketKeyNameLen+aes.BlockSize]
-	macBytes := encrypted[len(encrypted)-sha256.Size:]
-
-	if _, err := io.ReadFull(c.config.rand(), iv); err != nil {
-		return nil, err
-	}
-	key := c.ticketKeys[0]
-	copy(keyName, key.keyName[:])
-	block, err := aes.NewCipher(key.aesKey[:])
-	if err != nil {
-		return nil, errors.New("tls: failed to create cipher while encrypting ticket: " + err.Error())
-	}
-	cipher.NewCTR(block, iv).XORKeyStream(encrypted[ticketKeyNameLen+aes.BlockSize:], state)
-
-	mac := hmac.New(sha256.New, key.hmacKey[:])
-	mac.Write(encrypted[:len(encrypted)-sha256.Size])
-	mac.Sum(macBytes[:0])
-
-	return encrypted, nil
-}
-
-func (c *Conn) decryptTicket(encrypted []byte) (plaintext []byte, usedOldKey bool) {
-	if len(encrypted) < ticketKeyNameLen+aes.BlockSize+sha256.Size {
-		return nil, false
-	}
-
-	keyName := encrypted[:ticketKeyNameLen]
-	iv := encrypted[ticketKeyNameLen : ticketKeyNameLen+aes.BlockSize]
-	macBytes := encrypted[len(encrypted)-sha256.Size:]
-	ciphertext := encrypted[ticketKeyNameLen+aes.BlockSize : len(encrypted)-sha256.Size]
-
-	keyIndex := -1
-	for i, candidateKey := range c.ticketKeys {
-		if bytes.Equal(keyName, candidateKey.keyName[:]) {
-			keyIndex = i
-			break
-		}
-	}
-	if keyIndex == -1 {
-		return nil, false
-	}
-	key := &c.ticketKeys[keyIndex]
-
-	mac := hmac.New(sha256.New, key.hmacKey[:])
-	mac.Write(encrypted[:len(encrypted)-sha256.Size])
-	expected := mac.Sum(nil)
-
-	if subtle.ConstantTimeCompare(macBytes, expected) != 1 {
-		return nil, false
-	}
-
-	block, err := aes.NewCipher(key.aesKey[:])
-	if err != nil {
-		return nil, false
-	}
-	plaintext = make([]byte, len(ciphertext))
-	cipher.NewCTR(block, iv).XORKeyStream(plaintext, ciphertext)
-
-	return plaintext, keyIndex > 0
-}

transport/shadowtls/tls/tls.go

@@ -1,356 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package tls partially implements TLS 1.2, as specified in RFC 5246,
-// and TLS 1.3, as specified in RFC 8446.
-package tls
-
-// BUG(agl): The crypto/tls package only implements some countermeasures
-// against Lucky13 attacks on CBC-mode encryption, and only on SHA1
-// variants. See http://www.isg.rhul.ac.uk/tls/TLStiming.pdf and
-// https://www.imperialviolet.org/2013/02/04/luckythirteen.html.
-
-import (
-	"bytes"
-	"context"
-	"crypto"
-	"crypto/ecdsa"
-	"crypto/ed25519"
-	"crypto/rsa"
-	"crypto/x509"
-	"encoding/pem"
-	"errors"
-	"fmt"
-	"net"
-	"os"
-	"strings"
-)
-
-// Server returns a new TLS server side connection
-// using conn as the underlying transport.
-// The configuration config must be non-nil and must include
-// at least one certificate or else set GetCertificate.
-func Server(conn net.Conn, config *Config) *Conn {
-	c := &Conn{
-		conn:   conn,
-		config: config,
-	}
-	c.handshakeFn = c.serverHandshake
-	return c
-}
-
-// Client returns a new TLS client side connection
-// using conn as the underlying transport.
-// The config cannot be nil: users must set either ServerName or
-// InsecureSkipVerify in the config.
-func Client(conn net.Conn, config *Config) *Conn {
-	c := &Conn{
-		conn:     conn,
-		config:   config,
-		isClient: true,
-	}
-	c.handshakeFn = c.clientHandshake
-	return c
-}
-
-// A listener implements a network listener (net.Listener) for TLS connections.
-type listener struct {
-	net.Listener
-	config *Config
-}
-
-// Accept waits for and returns the next incoming TLS connection.
-// The returned connection is of type *Conn.
-func (l *listener) Accept() (net.Conn, error) {
-	c, err := l.Listener.Accept()
-	if err != nil {
-		return nil, err
-	}
-	return Server(c, l.config), nil
-}
-
-// NewListener creates a Listener which accepts connections from an inner
-// Listener and wraps each connection with Server.
-// The configuration config must be non-nil and must include
-// at least one certificate or else set GetCertificate.
-func NewListener(inner net.Listener, config *Config) net.Listener {
-	l := new(listener)
-	l.Listener = inner
-	l.config = config
-	return l
-}
-
-// Listen creates a TLS listener accepting connections on the
-// given network address using net.Listen.
-// The configuration config must be non-nil and must include
-// at least one certificate or else set GetCertificate.
-func Listen(network, laddr string, config *Config) (net.Listener, error) {
-	if config == nil || len(config.Certificates) == 0 &&
-		config.GetCertificate == nil && config.GetConfigForClient == nil {
-		return nil, errors.New("tls: neither Certificates, GetCertificate, nor GetConfigForClient set in Config")
-	}
-	l, err := net.Listen(network, laddr)
-	if err != nil {
-		return nil, err
-	}
-	return NewListener(l, config), nil
-}
-
-type timeoutError struct{}
-
-func (timeoutError) Error() string   { return "tls: DialWithDialer timed out" }
-func (timeoutError) Timeout() bool   { return true }
-func (timeoutError) Temporary() bool { return true }
-
-// DialWithDialer connects to the given network address using dialer.Dial and
-// then initiates a TLS handshake, returning the resulting TLS connection. Any
-// timeout or deadline given in the dialer apply to connection and TLS
-// handshake as a whole.
-//
-// DialWithDialer interprets a nil configuration as equivalent to the zero
-// configuration; see the documentation of Config for the defaults.
-//
-// DialWithDialer uses context.Background internally; to specify the context,
-// use Dialer.DialContext with NetDialer set to the desired dialer.
-func DialWithDialer(dialer *net.Dialer, network, addr string, config *Config) (*Conn, error) {
-	return dial(context.Background(), dialer, network, addr, config)
-}
-
-func dial(ctx context.Context, netDialer *net.Dialer, network, addr string, config *Config) (*Conn, error) {
-	if netDialer.Timeout != 0 {
-		var cancel context.CancelFunc
-		ctx, cancel = context.WithTimeout(ctx, netDialer.Timeout)
-		defer cancel()
-	}
-
-	if !netDialer.Deadline.IsZero() {
-		var cancel context.CancelFunc
-		ctx, cancel = context.WithDeadline(ctx, netDialer.Deadline)
-		defer cancel()
-	}
-
-	rawConn, err := netDialer.DialContext(ctx, network, addr)
-	if err != nil {
-		return nil, err
-	}
-
-	colonPos := strings.LastIndex(addr, ":")
-	if colonPos == -1 {
-		colonPos = len(addr)
-	}
-	hostname := addr[:colonPos]
-
-	if config == nil {
-		config = defaultConfig()
-	}
-	// If no ServerName is set, infer the ServerName
-	// from the hostname we're connecting to.
-	if config.ServerName == "" {
-		// Make a copy to avoid polluting argument or default.
-		c := config.Clone()
-		c.ServerName = hostname
-		config = c
-	}
-
-	conn := Client(rawConn, config)
-	if err := conn.HandshakeContext(ctx); err != nil {
-		rawConn.Close()
-		return nil, err
-	}
-	return conn, nil
-}
-
-// Dial connects to the given network address using net.Dial
-// and then initiates a TLS handshake, returning the resulting
-// TLS connection.
-// Dial interprets a nil configuration as equivalent to
-// the zero configuration; see the documentation of Config
-// for the defaults.
-func Dial(network, addr string, config *Config) (*Conn, error) {
-	return DialWithDialer(new(net.Dialer), network, addr, config)
-}
-
-// Dialer dials TLS connections given a configuration and a Dialer for the
-// underlying connection.
-type Dialer struct {
-	// NetDialer is the optional dialer to use for the TLS connections'
-	// underlying TCP connections.
-	// A nil NetDialer is equivalent to the net.Dialer zero value.
-	NetDialer *net.Dialer
-
-	// Config is the TLS configuration to use for new connections.
-	// A nil configuration is equivalent to the zero
-	// configuration; see the documentation of Config for the
-	// defaults.
-	Config *Config
-}
-
-// Dial connects to the given network address and initiates a TLS
-// handshake, returning the resulting TLS connection.
-//
-// The returned Conn, if any, will always be of type *Conn.
-//
-// Dial uses context.Background internally; to specify the context,
-// use DialContext.
-func (d *Dialer) Dial(network, addr string) (net.Conn, error) {
-	return d.DialContext(context.Background(), network, addr)
-}
-
-func (d *Dialer) netDialer() *net.Dialer {
-	if d.NetDialer != nil {
-		return d.NetDialer
-	}
-	return new(net.Dialer)
-}
-
-// DialContext connects to the given network address and initiates a TLS
-// handshake, returning the resulting TLS connection.
-//
-// The provided Context must be non-nil. If the context expires before
-// the connection is complete, an error is returned. Once successfully
-// connected, any expiration of the context will not affect the
-// connection.
-//
-// The returned Conn, if any, will always be of type *Conn.
-func (d *Dialer) DialContext(ctx context.Context, network, addr string) (net.Conn, error) {
-	c, err := dial(ctx, d.netDialer(), network, addr, d.Config)
-	if err != nil {
-		// Don't return c (a typed nil) in an interface.
-		return nil, err
-	}
-	return c, nil
-}
-
-// LoadX509KeyPair reads and parses a public/private key pair from a pair
-// of files. The files must contain PEM encoded data. The certificate file
-// may contain intermediate certificates following the leaf certificate to
-// form a certificate chain. On successful return, Certificate.Leaf will
-// be nil because the parsed form of the certificate is not retained.
-func LoadX509KeyPair(certFile, keyFile string) (Certificate, error) {
-	certPEMBlock, err := os.ReadFile(certFile)
-	if err != nil {
-		return Certificate{}, err
-	}
-	keyPEMBlock, err := os.ReadFile(keyFile)
-	if err != nil {
-		return Certificate{}, err
-	}
-	return X509KeyPair(certPEMBlock, keyPEMBlock)
-}
-
-// X509KeyPair parses a public/private key pair from a pair of
-// PEM encoded data. On successful return, Certificate.Leaf will be nil because
-// the parsed form of the certificate is not retained.
-func X509KeyPair(certPEMBlock, keyPEMBlock []byte) (Certificate, error) {
-	fail := func(err error) (Certificate, error) { return Certificate{}, err }
-
-	var cert Certificate
-	var skippedBlockTypes []string
-	for {
-		var certDERBlock *pem.Block
-		certDERBlock, certPEMBlock = pem.Decode(certPEMBlock)
-		if certDERBlock == nil {
-			break
-		}
-		if certDERBlock.Type == "CERTIFICATE" {
-			cert.Certificate = append(cert.Certificate, certDERBlock.Bytes)
-		} else {
-			skippedBlockTypes = append(skippedBlockTypes, certDERBlock.Type)
-		}
-	}
-
-	if len(cert.Certificate) == 0 {
-		if len(skippedBlockTypes) == 0 {
-			return fail(errors.New("tls: failed to find any PEM data in certificate input"))
-		}
-		if len(skippedBlockTypes) == 1 && strings.HasSuffix(skippedBlockTypes[0], "PRIVATE KEY") {
-			return fail(errors.New("tls: failed to find certificate PEM data in certificate input, but did find a private key; PEM inputs may have been switched"))
-		}
-		return fail(fmt.Errorf("tls: failed to find \"CERTIFICATE\" PEM block in certificate input after skipping PEM blocks of the following types: %v", skippedBlockTypes))
-	}
-
-	skippedBlockTypes = skippedBlockTypes[:0]
-	var keyDERBlock *pem.Block
-	for {
-		keyDERBlock, keyPEMBlock = pem.Decode(keyPEMBlock)
-		if keyDERBlock == nil {
-			if len(skippedBlockTypes) == 0 {
-				return fail(errors.New("tls: failed to find any PEM data in key input"))
-			}
-			if len(skippedBlockTypes) == 1 && skippedBlockTypes[0] == "CERTIFICATE" {
-				return fail(errors.New("tls: found a certificate rather than a key in the PEM for the private key"))
-			}
-			return fail(fmt.Errorf("tls: failed to find PEM block with type ending in \"PRIVATE KEY\" in key input after skipping PEM blocks of the following types: %v", skippedBlockTypes))
-		}
-		if keyDERBlock.Type == "PRIVATE KEY" || strings.HasSuffix(keyDERBlock.Type, " PRIVATE KEY") {
-			break
-		}
-		skippedBlockTypes = append(skippedBlockTypes, keyDERBlock.Type)
-	}
-
-	// We don't need to parse the public key for TLS, but we so do anyway
-	// to check that it looks sane and matches the private key.
-	x509Cert, err := x509.ParseCertificate(cert.Certificate[0])
-	if err != nil {
-		return fail(err)
-	}
-
-	cert.PrivateKey, err = parsePrivateKey(keyDERBlock.Bytes)
-	if err != nil {
-		return fail(err)
-	}
-
-	switch pub := x509Cert.PublicKey.(type) {
-	case *rsa.PublicKey:
-		priv, ok := cert.PrivateKey.(*rsa.PrivateKey)
-		if !ok {
-			return fail(errors.New("tls: private key type does not match public key type"))
-		}
-		if pub.N.Cmp(priv.N) != 0 {
-			return fail(errors.New("tls: private key does not match public key"))
-		}
-	case *ecdsa.PublicKey:
-		priv, ok := cert.PrivateKey.(*ecdsa.PrivateKey)
-		if !ok {
-			return fail(errors.New("tls: private key type does not match public key type"))
-		}
-		if pub.X.Cmp(priv.X) != 0 || pub.Y.Cmp(priv.Y) != 0 {
-			return fail(errors.New("tls: private key does not match public key"))
-		}
-	case ed25519.PublicKey:
-		priv, ok := cert.PrivateKey.(ed25519.PrivateKey)
-		if !ok {
-			return fail(errors.New("tls: private key type does not match public key type"))
-		}
-		if !bytes.Equal(priv.Public().(ed25519.PublicKey), pub) {
-			return fail(errors.New("tls: private key does not match public key"))
-		}
-	default:
-		return fail(errors.New("tls: unknown public key algorithm"))
-	}
-
-	return cert, nil
-}
-
-// Attempt to parse the given private key DER block. OpenSSL 0.9.8 generates
-// PKCS #1 private keys by default, while OpenSSL 1.0.0 generates PKCS #8 keys.
-// OpenSSL ecparam generates SEC1 EC private keys for ECDSA. We try all three.
-func parsePrivateKey(der []byte) (crypto.PrivateKey, error) {
-	if key, err := x509.ParsePKCS1PrivateKey(der); err == nil {
-		return key, nil
-	}
-	if key, err := x509.ParsePKCS8PrivateKey(der); err == nil {
-		switch key := key.(type) {
-		case *rsa.PrivateKey, *ecdsa.PrivateKey, ed25519.PrivateKey:
-			return key, nil
-		default:
-			return nil, errors.New("tls: found unknown private key type in PKCS#8 wrapping")
-		}
-	}
-	if key, err := x509.ParseECPrivateKey(der); err == nil {
-		return key, nil
-	}
-
-	return nil, errors.New("tls: failed to parse private key")
-}

transport/shadowtls/tls_go119/README.md

@@ -1,5 +0,0 @@
-# tls
-
-crypto/tls fork for shadowtls v3
-
-version: go1.19.5

transport/shadowtls/tls_go119/alert.go

@@ -1,99 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package tls
-
-import "strconv"
-
-type alert uint8
-
-const (
-	// alert level
-	alertLevelWarning = 1
-	alertLevelError   = 2
-)
-
-const (
-	alertCloseNotify                  alert = 0
-	alertUnexpectedMessage            alert = 10
-	alertBadRecordMAC                 alert = 20
-	alertDecryptionFailed             alert = 21
-	alertRecordOverflow               alert = 22
-	alertDecompressionFailure         alert = 30
-	alertHandshakeFailure             alert = 40
-	alertBadCertificate               alert = 42
-	alertUnsupportedCertificate       alert = 43
-	alertCertificateRevoked           alert = 44
-	alertCertificateExpired           alert = 45
-	alertCertificateUnknown           alert = 46
-	alertIllegalParameter             alert = 47
-	alertUnknownCA                    alert = 48
-	alertAccessDenied                 alert = 49
-	alertDecodeError                  alert = 50
-	alertDecryptError                 alert = 51
-	alertExportRestriction            alert = 60
-	alertProtocolVersion              alert = 70
-	alertInsufficientSecurity         alert = 71
-	alertInternalError                alert = 80
-	alertInappropriateFallback        alert = 86
-	alertUserCanceled                 alert = 90
-	alertNoRenegotiation              alert = 100
-	alertMissingExtension             alert = 109
-	alertUnsupportedExtension         alert = 110
-	alertCertificateUnobtainable      alert = 111
-	alertUnrecognizedName             alert = 112
-	alertBadCertificateStatusResponse alert = 113
-	alertBadCertificateHashValue      alert = 114
-	alertUnknownPSKIdentity           alert = 115
-	alertCertificateRequired          alert = 116
-	alertNoApplicationProtocol        alert = 120
-)
-
-var alertText = map[alert]string{
-	alertCloseNotify:                  "close notify",
-	alertUnexpectedMessage:            "unexpected message",
-	alertBadRecordMAC:                 "bad record MAC",
-	alertDecryptionFailed:             "decryption failed",
-	alertRecordOverflow:               "record overflow",
-	alertDecompressionFailure:         "decompression failure",
-	alertHandshakeFailure:             "handshake failure",
-	alertBadCertificate:               "bad certificate",
-	alertUnsupportedCertificate:       "unsupported certificate",
-	alertCertificateRevoked:           "revoked certificate",
-	alertCertificateExpired:           "expired certificate",
-	alertCertificateUnknown:           "unknown certificate",
-	alertIllegalParameter:             "illegal parameter",
-	alertUnknownCA:                    "unknown certificate authority",
-	alertAccessDenied:                 "access denied",
-	alertDecodeError:                  "error decoding message",
-	alertDecryptError:                 "error decrypting message",
-	alertExportRestriction:            "export restriction",
-	alertProtocolVersion:              "protocol version not supported",
-	alertInsufficientSecurity:         "insufficient security level",
-	alertInternalError:                "internal error",
-	alertInappropriateFallback:        "inappropriate fallback",
-	alertUserCanceled:                 "user canceled",
-	alertNoRenegotiation:              "no renegotiation",
-	alertMissingExtension:             "missing extension",
-	alertUnsupportedExtension:         "unsupported extension",
-	alertCertificateUnobtainable:      "certificate unobtainable",
-	alertUnrecognizedName:             "unrecognized name",
-	alertBadCertificateStatusResponse: "bad certificate status response",
-	alertBadCertificateHashValue:      "bad certificate hash value",
-	alertUnknownPSKIdentity:           "unknown PSK identity",
-	alertCertificateRequired:          "certificate required",
-	alertNoApplicationProtocol:        "no application protocol",
-}
-
-func (e alert) String() string {
-	s, ok := alertText[e]
-	if ok {
-		return "tls: " + s
-	}
-	return "tls: alert(" + strconv.Itoa(int(e)) + ")"
-}
-
-func (e alert) Error() string {
-	return e.String()
-}

transport/shadowtls/tls_go119/auth.go

@@ -1,293 +0,0 @@
-// Copyright 2017 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package tls
-
-import (
-	"bytes"
-	"crypto"
-	"crypto/ecdsa"
-	"crypto/ed25519"
-	"crypto/elliptic"
-	"crypto/rsa"
-	"errors"
-	"fmt"
-	"hash"
-	"io"
-)
-
-// verifyHandshakeSignature verifies a signature against pre-hashed
-// (if required) handshake contents.
-func verifyHandshakeSignature(sigType uint8, pubkey crypto.PublicKey, hashFunc crypto.Hash, signed, sig []byte) error {
-	switch sigType {
-	case signatureECDSA:
-		pubKey, ok := pubkey.(*ecdsa.PublicKey)
-		if !ok {
-			return fmt.Errorf("expected an ECDSA public key, got %T", pubkey)
-		}
-		if !ecdsa.VerifyASN1(pubKey, signed, sig) {
-			return errors.New("ECDSA verification failure")
-		}
-	case signatureEd25519:
-		pubKey, ok := pubkey.(ed25519.PublicKey)
-		if !ok {
-			return fmt.Errorf("expected an Ed25519 public key, got %T", pubkey)
-		}
-		if !ed25519.Verify(pubKey, signed, sig) {
-			return errors.New("Ed25519 verification failure")
-		}
-	case signaturePKCS1v15:
-		pubKey, ok := pubkey.(*rsa.PublicKey)
-		if !ok {
-			return fmt.Errorf("expected an RSA public key, got %T", pubkey)
-		}
-		if err := rsa.VerifyPKCS1v15(pubKey, hashFunc, signed, sig); err != nil {
-			return err
-		}
-	case signatureRSAPSS:
-		pubKey, ok := pubkey.(*rsa.PublicKey)
-		if !ok {
-			return fmt.Errorf("expected an RSA public key, got %T", pubkey)
-		}
-		signOpts := &rsa.PSSOptions{SaltLength: rsa.PSSSaltLengthEqualsHash}
-		if err := rsa.VerifyPSS(pubKey, hashFunc, signed, sig, signOpts); err != nil {
-			return err
-		}
-	default:
-		return errors.New("internal error: unknown signature type")
-	}
-	return nil
-}
-
-const (
-	serverSignatureContext = "TLS 1.3, server CertificateVerify\x00"
-	clientSignatureContext = "TLS 1.3, client CertificateVerify\x00"
-)
-
-var signaturePadding = []byte{
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-}
-
-// signedMessage returns the pre-hashed (if necessary) message to be signed by
-// certificate keys in TLS 1.3. See RFC 8446, Section 4.4.3.
-func signedMessage(sigHash crypto.Hash, context string, transcript hash.Hash) []byte {
-	if sigHash == directSigning {
-		b := &bytes.Buffer{}
-		b.Write(signaturePadding)
-		io.WriteString(b, context)
-		b.Write(transcript.Sum(nil))
-		return b.Bytes()
-	}
-	h := sigHash.New()
-	h.Write(signaturePadding)
-	io.WriteString(h, context)
-	h.Write(transcript.Sum(nil))
-	return h.Sum(nil)
-}
-
-// typeAndHashFromSignatureScheme returns the corresponding signature type and
-// crypto.Hash for a given TLS SignatureScheme.
-func typeAndHashFromSignatureScheme(signatureAlgorithm SignatureScheme) (sigType uint8, hash crypto.Hash, err error) {
-	switch signatureAlgorithm {
-	case PKCS1WithSHA1, PKCS1WithSHA256, PKCS1WithSHA384, PKCS1WithSHA512:
-		sigType = signaturePKCS1v15
-	case PSSWithSHA256, PSSWithSHA384, PSSWithSHA512:
-		sigType = signatureRSAPSS
-	case ECDSAWithSHA1, ECDSAWithP256AndSHA256, ECDSAWithP384AndSHA384, ECDSAWithP521AndSHA512:
-		sigType = signatureECDSA
-	case Ed25519:
-		sigType = signatureEd25519
-	default:
-		return 0, 0, fmt.Errorf("unsupported signature algorithm: %v", signatureAlgorithm)
-	}
-	switch signatureAlgorithm {
-	case PKCS1WithSHA1, ECDSAWithSHA1:
-		hash = crypto.SHA1
-	case PKCS1WithSHA256, PSSWithSHA256, ECDSAWithP256AndSHA256:
-		hash = crypto.SHA256
-	case PKCS1WithSHA384, PSSWithSHA384, ECDSAWithP384AndSHA384:
-		hash = crypto.SHA384
-	case PKCS1WithSHA512, PSSWithSHA512, ECDSAWithP521AndSHA512:
-		hash = crypto.SHA512
-	case Ed25519:
-		hash = directSigning
-	default:
-		return 0, 0, fmt.Errorf("unsupported signature algorithm: %v", signatureAlgorithm)
-	}
-	return sigType, hash, nil
-}
-
-// legacyTypeAndHashFromPublicKey returns the fixed signature type and crypto.Hash for
-// a given public key used with TLS 1.0 and 1.1, before the introduction of
-// signature algorithm negotiation.
-func legacyTypeAndHashFromPublicKey(pub crypto.PublicKey) (sigType uint8, hash crypto.Hash, err error) {
-	switch pub.(type) {
-	case *rsa.PublicKey:
-		return signaturePKCS1v15, crypto.MD5SHA1, nil
-	case *ecdsa.PublicKey:
-		return signatureECDSA, crypto.SHA1, nil
-	case ed25519.PublicKey:
-		// RFC 8422 specifies support for Ed25519 in TLS 1.0 and 1.1,
-		// but it requires holding on to a handshake transcript to do a
-		// full signature, and not even OpenSSL bothers with the
-		// complexity, so we can't even test it properly.
-		return 0, 0, fmt.Errorf("tls: Ed25519 public keys are not supported before TLS 1.2")
-	default:
-		return 0, 0, fmt.Errorf("tls: unsupported public key: %T", pub)
-	}
-}
-
-var rsaSignatureSchemes = []struct {
-	scheme          SignatureScheme
-	minModulusBytes int
-	maxVersion      uint16
-}{
-	// RSA-PSS is used with PSSSaltLengthEqualsHash, and requires
-	//    emLen >= hLen + sLen + 2
-	{PSSWithSHA256, crypto.SHA256.Size()*2 + 2, VersionTLS13},
-	{PSSWithSHA384, crypto.SHA384.Size()*2 + 2, VersionTLS13},
-	{PSSWithSHA512, crypto.SHA512.Size()*2 + 2, VersionTLS13},
-	// PKCS #1 v1.5 uses prefixes from hashPrefixes in crypto/rsa, and requires
-	//    emLen >= len(prefix) + hLen + 11
-	// TLS 1.3 dropped support for PKCS #1 v1.5 in favor of RSA-PSS.
-	{PKCS1WithSHA256, 19 + crypto.SHA256.Size() + 11, VersionTLS12},
-	{PKCS1WithSHA384, 19 + crypto.SHA384.Size() + 11, VersionTLS12},
-	{PKCS1WithSHA512, 19 + crypto.SHA512.Size() + 11, VersionTLS12},
-	{PKCS1WithSHA1, 15 + crypto.SHA1.Size() + 11, VersionTLS12},
-}
-
-// signatureSchemesForCertificate returns the list of supported SignatureSchemes
-// for a given certificate, based on the public key and the protocol version,
-// and optionally filtered by its explicit SupportedSignatureAlgorithms.
-//
-// This function must be kept in sync with supportedSignatureAlgorithms.
-// FIPS filtering is applied in the caller, selectSignatureScheme.
-func signatureSchemesForCertificate(version uint16, cert *Certificate) []SignatureScheme {
-	priv, ok := cert.PrivateKey.(crypto.Signer)
-	if !ok {
-		return nil
-	}
-
-	var sigAlgs []SignatureScheme
-	switch pub := priv.Public().(type) {
-	case *ecdsa.PublicKey:
-		if version != VersionTLS13 {
-			// In TLS 1.2 and earlier, ECDSA algorithms are not
-			// constrained to a single curve.
-			sigAlgs = []SignatureScheme{
-				ECDSAWithP256AndSHA256,
-				ECDSAWithP384AndSHA384,
-				ECDSAWithP521AndSHA512,
-				ECDSAWithSHA1,
-			}
-			break
-		}
-		switch pub.Curve {
-		case elliptic.P256():
-			sigAlgs = []SignatureScheme{ECDSAWithP256AndSHA256}
-		case elliptic.P384():
-			sigAlgs = []SignatureScheme{ECDSAWithP384AndSHA384}
-		case elliptic.P521():
-			sigAlgs = []SignatureScheme{ECDSAWithP521AndSHA512}
-		default:
-			return nil
-		}
-	case *rsa.PublicKey:
-		size := pub.Size()
-		sigAlgs = make([]SignatureScheme, 0, len(rsaSignatureSchemes))
-		for _, candidate := range rsaSignatureSchemes {
-			if size >= candidate.minModulusBytes && version <= candidate.maxVersion {
-				sigAlgs = append(sigAlgs, candidate.scheme)
-			}
-		}
-	case ed25519.PublicKey:
-		sigAlgs = []SignatureScheme{Ed25519}
-	default:
-		return nil
-	}
-
-	if cert.SupportedSignatureAlgorithms != nil {
-		var filteredSigAlgs []SignatureScheme
-		for _, sigAlg := range sigAlgs {
-			if isSupportedSignatureAlgorithm(sigAlg, cert.SupportedSignatureAlgorithms) {
-				filteredSigAlgs = append(filteredSigAlgs, sigAlg)
-			}
-		}
-		return filteredSigAlgs
-	}
-	return sigAlgs
-}
-
-// selectSignatureScheme picks a SignatureScheme from the peer's preference list
-// that works with the selected certificate. It's only called for protocol
-// versions that support signature algorithms, so TLS 1.2 and 1.3.
-func selectSignatureScheme(vers uint16, c *Certificate, peerAlgs []SignatureScheme) (SignatureScheme, error) {
-	supportedAlgs := signatureSchemesForCertificate(vers, c)
-	if len(supportedAlgs) == 0 {
-		return 0, unsupportedCertificateError(c)
-	}
-	if len(peerAlgs) == 0 && vers == VersionTLS12 {
-		// For TLS 1.2, if the client didn't send signature_algorithms then we
-		// can assume that it supports SHA1. See RFC 5246, Section 7.4.1.4.1.
-		peerAlgs = []SignatureScheme{PKCS1WithSHA1, ECDSAWithSHA1}
-	}
-	// Pick signature scheme in the peer's preference order, as our
-	// preference order is not configurable.
-	for _, preferredAlg := range peerAlgs {
-		if needFIPS() && !isSupportedSignatureAlgorithm(preferredAlg, fipsSupportedSignatureAlgorithms) {
-			continue
-		}
-		if isSupportedSignatureAlgorithm(preferredAlg, supportedAlgs) {
-			return preferredAlg, nil
-		}
-	}
-	return 0, errors.New("tls: peer doesn't support any of the certificate's signature algorithms")
-}
-
-// unsupportedCertificateError returns a helpful error for certificates with
-// an unsupported private key.
-func unsupportedCertificateError(cert *Certificate) error {
-	switch cert.PrivateKey.(type) {
-	case rsa.PrivateKey, ecdsa.PrivateKey:
-		return fmt.Errorf("tls: unsupported certificate: private key is %T, expected *%T",
-			cert.PrivateKey, cert.PrivateKey)
-	case *ed25519.PrivateKey:
-		return fmt.Errorf("tls: unsupported certificate: private key is *ed25519.PrivateKey, expected ed25519.PrivateKey")
-	}
-
-	signer, ok := cert.PrivateKey.(crypto.Signer)
-	if !ok {
-		return fmt.Errorf("tls: certificate private key (%T) does not implement crypto.Signer",
-			cert.PrivateKey)
-	}
-
-	switch pub := signer.Public().(type) {
-	case *ecdsa.PublicKey:
-		switch pub.Curve {
-		case elliptic.P256():
-		case elliptic.P384():
-		case elliptic.P521():
-		default:
-			return fmt.Errorf("tls: unsupported certificate curve (%s)", pub.Curve.Params().Name)
-		}
-	case *rsa.PublicKey:
-		return fmt.Errorf("tls: certificate RSA key size too small for supported signature algorithms")
-	case ed25519.PublicKey:
-	default:
-		return fmt.Errorf("tls: unsupported certificate key (%T)", pub)
-	}
-
-	if cert.SupportedSignatureAlgorithms != nil {
-		return fmt.Errorf("tls: peer doesn't support the certificate custom signature algorithms")
-	}
-
-	return fmt.Errorf("tls: internal error: unsupported key (%T)", cert.PrivateKey)
-}

transport/shadowtls/tls_go119/boring.go

@@ -1,98 +0,0 @@
-// Copyright 2017 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build boringcrypto
-
-package tls
-
-import (
-	"crypto/internal/boring/fipstls"
-)
-
-// needFIPS returns fipstls.Required(); it avoids a new import in common.go.
-func needFIPS() bool {
-	return fipstls.Required()
-}
-
-// fipsMinVersion replaces c.minVersion in FIPS-only mode.
-func fipsMinVersion(c *Config) uint16 {
-	// FIPS requires TLS 1.2.
-	return VersionTLS12
-}
-
-// fipsMaxVersion replaces c.maxVersion in FIPS-only mode.
-func fipsMaxVersion(c *Config) uint16 {
-	// FIPS requires TLS 1.2.
-	return VersionTLS12
-}
-
-// default defaultFIPSCurvePreferences is the FIPS-allowed curves,
-// in preference order (most preferable first).
-var defaultFIPSCurvePreferences = []CurveID{CurveP256, CurveP384, CurveP521}
-
-// fipsCurvePreferences replaces c.curvePreferences in FIPS-only mode.
-func fipsCurvePreferences(c *Config) []CurveID {
-	if c == nil || len(c.CurvePreferences) == 0 {
-		return defaultFIPSCurvePreferences
-	}
-	var list []CurveID
-	for _, id := range c.CurvePreferences {
-		for _, allowed := range defaultFIPSCurvePreferences {
-			if id == allowed {
-				list = append(list, id)
-				break
-			}
-		}
-	}
-	return list
-}
-
-// defaultCipherSuitesFIPS are the FIPS-allowed cipher suites.
-var defaultCipherSuitesFIPS = []uint16{
-	TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
-	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
-	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
-	TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
-	TLS_RSA_WITH_AES_128_GCM_SHA256,
-	TLS_RSA_WITH_AES_256_GCM_SHA384,
-}
-
-// fipsCipherSuites replaces c.cipherSuites in FIPS-only mode.
-func fipsCipherSuites(c *Config) []uint16 {
-	if c == nil || c.CipherSuites == nil {
-		return defaultCipherSuitesFIPS
-	}
-	list := make([]uint16, 0, len(defaultCipherSuitesFIPS))
-	for _, id := range c.CipherSuites {
-		for _, allowed := range defaultCipherSuitesFIPS {
-			if id == allowed {
-				list = append(list, id)
-				break
-			}
-		}
-	}
-	return list
-}
-
-// fipsSupportedSignatureAlgorithms currently are a subset of
-// defaultSupportedSignatureAlgorithms without Ed25519 and SHA-1.
-var fipsSupportedSignatureAlgorithms = []SignatureScheme{
-	PSSWithSHA256,
-	PSSWithSHA384,
-	PSSWithSHA512,
-	PKCS1WithSHA256,
-	ECDSAWithP256AndSHA256,
-	PKCS1WithSHA384,
-	ECDSAWithP384AndSHA384,
-	PKCS1WithSHA512,
-	ECDSAWithP521AndSHA512,
-}
-
-// supportedSignatureAlgorithms returns the supported signature algorithms.
-func supportedSignatureAlgorithms() []SignatureScheme {
-	if !needFIPS() {
-		return defaultSupportedSignatureAlgorithms
-	}
-	return fipsSupportedSignatureAlgorithms
-}

transport/shadowtls/tls_go119/cipher_suites.go

@@ -1,701 +0,0 @@
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package tls
-
-import (
-	"crypto"
-	"crypto/aes"
-	"crypto/cipher"
-	"crypto/des"
-	"crypto/hmac"
-	"crypto/rc4"
-	"crypto/sha1"
-	"crypto/sha256"
-	"fmt"
-	"hash"
-	"runtime"
-
-	"golang.org/x/crypto/chacha20poly1305"
-	"golang.org/x/sys/cpu"
-)
-
-// CipherSuite is a TLS cipher suite. Note that most functions in this package
-// accept and expose cipher suite IDs instead of this type.
-type CipherSuite struct {
-	ID   uint16
-	Name string
-
-	// Supported versions is the list of TLS protocol versions that can
-	// negotiate this cipher suite.
-	SupportedVersions []uint16
-
-	// Insecure is true if the cipher suite has known security issues
-	// due to its primitives, design, or implementation.
-	Insecure bool
-}
-
-var (
-	supportedUpToTLS12 = []uint16{VersionTLS10, VersionTLS11, VersionTLS12}
-	supportedOnlyTLS12 = []uint16{VersionTLS12}
-	supportedOnlyTLS13 = []uint16{VersionTLS13}
-)
-
-// CipherSuites returns a list of cipher suites currently implemented by this
-// package, excluding those with security issues, which are returned by
-// InsecureCipherSuites.
-//
-// The list is sorted by ID. Note that the default cipher suites selected by
-// this package might depend on logic that can't be captured by a static list,
-// and might not match those returned by this function.
-func CipherSuites() []*CipherSuite {
-	return []*CipherSuite{
-		{TLS_RSA_WITH_AES_128_CBC_SHA, "TLS_RSA_WITH_AES_128_CBC_SHA", supportedUpToTLS12, false},
-		{TLS_RSA_WITH_AES_256_CBC_SHA, "TLS_RSA_WITH_AES_256_CBC_SHA", supportedUpToTLS12, false},
-		{TLS_RSA_WITH_AES_128_GCM_SHA256, "TLS_RSA_WITH_AES_128_GCM_SHA256", supportedOnlyTLS12, false},
-		{TLS_RSA_WITH_AES_256_GCM_SHA384, "TLS_RSA_WITH_AES_256_GCM_SHA384", supportedOnlyTLS12, false},
-
-		{TLS_AES_128_GCM_SHA256, "TLS_AES_128_GCM_SHA256", supportedOnlyTLS13, false},
-		{TLS_AES_256_GCM_SHA384, "TLS_AES_256_GCM_SHA384", supportedOnlyTLS13, false},
-		{TLS_CHACHA20_POLY1305_SHA256, "TLS_CHACHA20_POLY1305_SHA256", supportedOnlyTLS13, false},
-
-		{TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA", supportedUpToTLS12, false},
-		{TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA", supportedUpToTLS12, false},
-		{TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA", supportedUpToTLS12, false},
-		{TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA", supportedUpToTLS12, false},
-		{TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256", supportedOnlyTLS12, false},
-		{TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384", supportedOnlyTLS12, false},
-		{TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256", supportedOnlyTLS12, false},
-		{TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384", supportedOnlyTLS12, false},
-		{TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256, "TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256", supportedOnlyTLS12, false},
-		{TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256, "TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256", supportedOnlyTLS12, false},
-	}
-}
-
-// InsecureCipherSuites returns a list of cipher suites currently implemented by
-// this package and which have security issues.
-//
-// Most applications should not use the cipher suites in this list, and should
-// only use those returned by CipherSuites.
-func InsecureCipherSuites() []*CipherSuite {
-	// This list includes RC4, CBC_SHA256, and 3DES cipher suites. See
-	// cipherSuitesPreferenceOrder for details.
-	return []*CipherSuite{
-		{TLS_RSA_WITH_RC4_128_SHA, "TLS_RSA_WITH_RC4_128_SHA", supportedUpToTLS12, true},
-		{TLS_RSA_WITH_3DES_EDE_CBC_SHA, "TLS_RSA_WITH_3DES_EDE_CBC_SHA", supportedUpToTLS12, true},
-		{TLS_RSA_WITH_AES_128_CBC_SHA256, "TLS_RSA_WITH_AES_128_CBC_SHA256", supportedOnlyTLS12, true},
-		{TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, "TLS_ECDHE_ECDSA_WITH_RC4_128_SHA", supportedUpToTLS12, true},
-		{TLS_ECDHE_RSA_WITH_RC4_128_SHA, "TLS_ECDHE_RSA_WITH_RC4_128_SHA", supportedUpToTLS12, true},
-		{TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, "TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA", supportedUpToTLS12, true},
-		{TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256", supportedOnlyTLS12, true},
-		{TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256", supportedOnlyTLS12, true},
-	}
-}
-
-// CipherSuiteName returns the standard name for the passed cipher suite ID
-// (e.g. "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256"), or a fallback representation
-// of the ID value if the cipher suite is not implemented by this package.
-func CipherSuiteName(id uint16) string {
-	for _, c := range CipherSuites() {
-		if c.ID == id {
-			return c.Name
-		}
-	}
-	for _, c := range InsecureCipherSuites() {
-		if c.ID == id {
-			return c.Name
-		}
-	}
-	return fmt.Sprintf("0x%04X", id)
-}
-
-const (
-	// suiteECDHE indicates that the cipher suite involves elliptic curve
-	// Diffie-Hellman. This means that it should only be selected when the
-	// client indicates that it supports ECC with a curve and point format
-	// that we're happy with.
-	suiteECDHE = 1 << iota
-	// suiteECSign indicates that the cipher suite involves an ECDSA or
-	// EdDSA signature and therefore may only be selected when the server's
-	// certificate is ECDSA or EdDSA. If this is not set then the cipher suite
-	// is RSA based.
-	suiteECSign
-	// suiteTLS12 indicates that the cipher suite should only be advertised
-	// and accepted when using TLS 1.2.
-	suiteTLS12
-	// suiteSHA384 indicates that the cipher suite uses SHA384 as the
-	// handshake hash.
-	suiteSHA384
-)
-
-// A cipherSuite is a TLS 1.0–1.2 cipher suite, and defines the key exchange
-// mechanism, as well as the cipher+MAC pair or the AEAD.
-type cipherSuite struct {
-	id uint16
-	// the lengths, in bytes, of the key material needed for each component.
-	keyLen int
-	macLen int
-	ivLen  int
-	ka     func(version uint16) keyAgreement
-	// flags is a bitmask of the suite* values, above.
-	flags  int
-	cipher func(key, iv []byte, isRead bool) any
-	mac    func(key []byte) hash.Hash
-	aead   func(key, fixedNonce []byte) aead
-}
-
-var cipherSuites = []*cipherSuite{ // TODO: replace with a map, since the order doesn't matter.
-	{TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305, 32, 0, 12, ecdheRSAKA, suiteECDHE | suiteTLS12, nil, nil, aeadChaCha20Poly1305},
-	{TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305, 32, 0, 12, ecdheECDSAKA, suiteECDHE | suiteECSign | suiteTLS12, nil, nil, aeadChaCha20Poly1305},
-	{TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, 16, 0, 4, ecdheRSAKA, suiteECDHE | suiteTLS12, nil, nil, aeadAESGCM},
-	{TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, 16, 0, 4, ecdheECDSAKA, suiteECDHE | suiteECSign | suiteTLS12, nil, nil, aeadAESGCM},
-	{TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, 32, 0, 4, ecdheRSAKA, suiteECDHE | suiteTLS12 | suiteSHA384, nil, nil, aeadAESGCM},
-	{TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, 32, 0, 4, ecdheECDSAKA, suiteECDHE | suiteECSign | suiteTLS12 | suiteSHA384, nil, nil, aeadAESGCM},
-	{TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, 16, 32, 16, ecdheRSAKA, suiteECDHE | suiteTLS12, cipherAES, macSHA256, nil},
-	{TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, 16, 20, 16, ecdheRSAKA, suiteECDHE, cipherAES, macSHA1, nil},
-	{TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, 16, 32, 16, ecdheECDSAKA, suiteECDHE | suiteECSign | suiteTLS12, cipherAES, macSHA256, nil},
-	{TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, 16, 20, 16, ecdheECDSAKA, suiteECDHE | suiteECSign, cipherAES, macSHA1, nil},
-	{TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, 32, 20, 16, ecdheRSAKA, suiteECDHE, cipherAES, macSHA1, nil},
-	{TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, 32, 20, 16, ecdheECDSAKA, suiteECDHE | suiteECSign, cipherAES, macSHA1, nil},
-	{TLS_RSA_WITH_AES_128_GCM_SHA256, 16, 0, 4, rsaKA, suiteTLS12, nil, nil, aeadAESGCM},
-	{TLS_RSA_WITH_AES_256_GCM_SHA384, 32, 0, 4, rsaKA, suiteTLS12 | suiteSHA384, nil, nil, aeadAESGCM},
-	{TLS_RSA_WITH_AES_128_CBC_SHA256, 16, 32, 16, rsaKA, suiteTLS12, cipherAES, macSHA256, nil},
-	{TLS_RSA_WITH_AES_128_CBC_SHA, 16, 20, 16, rsaKA, 0, cipherAES, macSHA1, nil},
-	{TLS_RSA_WITH_AES_256_CBC_SHA, 32, 20, 16, rsaKA, 0, cipherAES, macSHA1, nil},
-	{TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, 24, 20, 8, ecdheRSAKA, suiteECDHE, cipher3DES, macSHA1, nil},
-	{TLS_RSA_WITH_3DES_EDE_CBC_SHA, 24, 20, 8, rsaKA, 0, cipher3DES, macSHA1, nil},
-	{TLS_RSA_WITH_RC4_128_SHA, 16, 20, 0, rsaKA, 0, cipherRC4, macSHA1, nil},
-	{TLS_ECDHE_RSA_WITH_RC4_128_SHA, 16, 20, 0, ecdheRSAKA, suiteECDHE, cipherRC4, macSHA1, nil},
-	{TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, 16, 20, 0, ecdheECDSAKA, suiteECDHE | suiteECSign, cipherRC4, macSHA1, nil},
-}
-
-// selectCipherSuite returns the first TLS 1.0–1.2 cipher suite from ids which
-// is also in supportedIDs and passes the ok filter.
-func selectCipherSuite(ids, supportedIDs []uint16, ok func(*cipherSuite) bool) *cipherSuite {
-	for _, id := range ids {
-		candidate := cipherSuiteByID(id)
-		if candidate == nil || !ok(candidate) {
-			continue
-		}
-
-		for _, suppID := range supportedIDs {
-			if id == suppID {
-				return candidate
-			}
-		}
-	}
-	return nil
-}
-
-// A cipherSuiteTLS13 defines only the pair of the AEAD algorithm and hash
-// algorithm to be used with HKDF. See RFC 8446, Appendix B.4.
-type cipherSuiteTLS13 struct {
-	id     uint16
-	keyLen int
-	aead   func(key, fixedNonce []byte) aead
-	hash   crypto.Hash
-}
-
-var cipherSuitesTLS13 = []*cipherSuiteTLS13{ // TODO: replace with a map.
-	{TLS_AES_128_GCM_SHA256, 16, aeadAESGCMTLS13, crypto.SHA256},
-	{TLS_CHACHA20_POLY1305_SHA256, 32, aeadChaCha20Poly1305, crypto.SHA256},
-	{TLS_AES_256_GCM_SHA384, 32, aeadAESGCMTLS13, crypto.SHA384},
-}
-
-// cipherSuitesPreferenceOrder is the order in which we'll select (on the
-// server) or advertise (on the client) TLS 1.0–1.2 cipher suites.
-//
-// Cipher suites are filtered but not reordered based on the application and
-// peer's preferences, meaning we'll never select a suite lower in this list if
-// any higher one is available. This makes it more defensible to keep weaker
-// cipher suites enabled, especially on the server side where we get the last
-// word, since there are no known downgrade attacks on cipher suites selection.
-//
-// The list is sorted by applying the following priority rules, stopping at the
-// first (most important) applicable one:
-//
-//   - Anything else comes before RC4
-//
-//     RC4 has practically exploitable biases. See https://www.rc4nomore.com.
-//
-//   - Anything else comes before CBC_SHA256
-//
-//     SHA-256 variants of the CBC ciphersuites don't implement any Lucky13
-//     countermeasures. See http://www.isg.rhul.ac.uk/tls/Lucky13.html and
-//     https://www.imperialviolet.org/2013/02/04/luckythirteen.html.
-//
-//   - Anything else comes before 3DES
-//
-//     3DES has 64-bit blocks, which makes it fundamentally susceptible to
-//     birthday attacks. See https://sweet32.info.
-//
-//   - ECDHE comes before anything else
-//
-//     Once we got the broken stuff out of the way, the most important
-//     property a cipher suite can have is forward secrecy. We don't
-//     implement FFDHE, so that means ECDHE.
-//
-//   - AEADs come before CBC ciphers
-//
-//     Even with Lucky13 countermeasures, MAC-then-Encrypt CBC cipher suites
-//     are fundamentally fragile, and suffered from an endless sequence of
-//     padding oracle attacks. See https://eprint.iacr.org/2015/1129,
-//     https://www.imperialviolet.org/2014/12/08/poodleagain.html, and
-//     https://blog.cloudflare.com/yet-another-padding-oracle-in-openssl-cbc-ciphersuites/.
-//
-//   - AES comes before ChaCha20
-//
-//     When AES hardware is available, AES-128-GCM and AES-256-GCM are faster
-//     than ChaCha20Poly1305.
-//
-//     When AES hardware is not available, AES-128-GCM is one or more of: much
-//     slower, way more complex, and less safe (because not constant time)
-//     than ChaCha20Poly1305.
-//
-//     We use this list if we think both peers have AES hardware, and
-//     cipherSuitesPreferenceOrderNoAES otherwise.
-//
-//   - AES-128 comes before AES-256
-//
-//     The only potential advantages of AES-256 are better multi-target
-//     margins, and hypothetical post-quantum properties. Neither apply to
-//     TLS, and AES-256 is slower due to its four extra rounds (which don't
-//     contribute to the advantages above).
-//
-//   - ECDSA comes before RSA
-//
-//     The relative order of ECDSA and RSA cipher suites doesn't matter,
-//     as they depend on the certificate. Pick one to get a stable order.
-var cipherSuitesPreferenceOrder = []uint16{
-	// AEADs w/ ECDHE
-	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
-	TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
-	TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305, TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
-
-	// CBC w/ ECDHE
-	TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
-	TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
-
-	// AEADs w/o ECDHE
-	TLS_RSA_WITH_AES_128_GCM_SHA256,
-	TLS_RSA_WITH_AES_256_GCM_SHA384,
-
-	// CBC w/o ECDHE
-	TLS_RSA_WITH_AES_128_CBC_SHA,
-	TLS_RSA_WITH_AES_256_CBC_SHA,
-
-	// 3DES
-	TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,
-	TLS_RSA_WITH_3DES_EDE_CBC_SHA,
-
-	// CBC_SHA256
-	TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
-	TLS_RSA_WITH_AES_128_CBC_SHA256,
-
-	// RC4
-	TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, TLS_ECDHE_RSA_WITH_RC4_128_SHA,
-	TLS_RSA_WITH_RC4_128_SHA,
-}
-
-var cipherSuitesPreferenceOrderNoAES = []uint16{
-	// ChaCha20Poly1305
-	TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305, TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
-
-	// AES-GCM w/ ECDHE
-	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
-	TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
-
-	// The rest of cipherSuitesPreferenceOrder.
-	TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
-	TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
-	TLS_RSA_WITH_AES_128_GCM_SHA256,
-	TLS_RSA_WITH_AES_256_GCM_SHA384,
-	TLS_RSA_WITH_AES_128_CBC_SHA,
-	TLS_RSA_WITH_AES_256_CBC_SHA,
-	TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,
-	TLS_RSA_WITH_3DES_EDE_CBC_SHA,
-	TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
-	TLS_RSA_WITH_AES_128_CBC_SHA256,
-	TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, TLS_ECDHE_RSA_WITH_RC4_128_SHA,
-	TLS_RSA_WITH_RC4_128_SHA,
-}
-
-// disabledCipherSuites are not used unless explicitly listed in
-// Config.CipherSuites. They MUST be at the end of cipherSuitesPreferenceOrder.
-var disabledCipherSuites = []uint16{
-	// CBC_SHA256
-	TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
-	TLS_RSA_WITH_AES_128_CBC_SHA256,
-
-	// RC4
-	TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, TLS_ECDHE_RSA_WITH_RC4_128_SHA,
-	TLS_RSA_WITH_RC4_128_SHA,
-}
-
-var (
-	defaultCipherSuitesLen = len(cipherSuitesPreferenceOrder) - len(disabledCipherSuites)
-	defaultCipherSuites    = cipherSuitesPreferenceOrder[:defaultCipherSuitesLen]
-)
-
-// defaultCipherSuitesTLS13 is also the preference order, since there are no
-// disabled by default TLS 1.3 cipher suites. The same AES vs ChaCha20 logic as
-// cipherSuitesPreferenceOrder applies.
-var defaultCipherSuitesTLS13 = []uint16{
-	TLS_AES_128_GCM_SHA256,
-	TLS_AES_256_GCM_SHA384,
-	TLS_CHACHA20_POLY1305_SHA256,
-}
-
-var defaultCipherSuitesTLS13NoAES = []uint16{
-	TLS_CHACHA20_POLY1305_SHA256,
-	TLS_AES_128_GCM_SHA256,
-	TLS_AES_256_GCM_SHA384,
-}
-
-var (
-	hasGCMAsmAMD64 = cpu.X86.HasAES && cpu.X86.HasPCLMULQDQ
-	hasGCMAsmARM64 = cpu.ARM64.HasAES && cpu.ARM64.HasPMULL
-	// Keep in sync with crypto/aes/cipher_s390x.go.
-	hasGCMAsmS390X = cpu.S390X.HasAES && cpu.S390X.HasAESCBC && cpu.S390X.HasAESCTR &&
-		(cpu.S390X.HasGHASH || cpu.S390X.HasAESGCM)
-
-	hasAESGCMHardwareSupport = runtime.GOARCH == "amd64" && hasGCMAsmAMD64 ||
-		runtime.GOARCH == "arm64" && hasGCMAsmARM64 ||
-		runtime.GOARCH == "s390x" && hasGCMAsmS390X
-)
-
-var aesgcmCiphers = map[uint16]bool{
-	// TLS 1.2
-	TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256:   true,
-	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384:   true,
-	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256: true,
-	TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384: true,
-	// TLS 1.3
-	TLS_AES_128_GCM_SHA256: true,
-	TLS_AES_256_GCM_SHA384: true,
-}
-
-var nonAESGCMAEADCiphers = map[uint16]bool{
-	// TLS 1.2
-	TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305:   true,
-	TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305: true,
-	// TLS 1.3
-	TLS_CHACHA20_POLY1305_SHA256: true,
-}
-
-// aesgcmPreferred returns whether the first known cipher in the preference list
-// is an AES-GCM cipher, implying the peer has hardware support for it.
-func aesgcmPreferred(ciphers []uint16) bool {
-	for _, cID := range ciphers {
-		if c := cipherSuiteByID(cID); c != nil {
-			return aesgcmCiphers[cID]
-		}
-		if c := cipherSuiteTLS13ByID(cID); c != nil {
-			return aesgcmCiphers[cID]
-		}
-	}
-	return false
-}
-
-func cipherRC4(key, iv []byte, isRead bool) any {
-	cipher, _ := rc4.NewCipher(key)
-	return cipher
-}
-
-func cipher3DES(key, iv []byte, isRead bool) any {
-	block, _ := des.NewTripleDESCipher(key)
-	if isRead {
-		return cipher.NewCBCDecrypter(block, iv)
-	}
-	return cipher.NewCBCEncrypter(block, iv)
-}
-
-func cipherAES(key, iv []byte, isRead bool) any {
-	block, _ := aes.NewCipher(key)
-	if isRead {
-		return cipher.NewCBCDecrypter(block, iv)
-	}
-	return cipher.NewCBCEncrypter(block, iv)
-}
-
-// macSHA1 returns a SHA-1 based constant time MAC.
-func macSHA1(key []byte) hash.Hash {
-	h := sha1.New
-	// The BoringCrypto SHA1 does not have a constant-time
-	// checksum function, so don't try to use it.
-	// if !boring.Enabled {
-	h = newConstantTimeHash(h)
-	//}
-	return hmac.New(h, key)
-}
-
-// macSHA256 returns a SHA-256 based MAC. This is only supported in TLS 1.2 and
-// is currently only used in disabled-by-default cipher suites.
-func macSHA256(key []byte) hash.Hash {
-	return hmac.New(sha256.New, key)
-}
-
-type aead interface {
-	cipher.AEAD
-
-	// explicitNonceLen returns the number of bytes of explicit nonce
-	// included in each record. This is eight for older AEADs and
-	// zero for modern ones.
-	explicitNonceLen() int
-}
-
-const (
-	aeadNonceLength   = 12
-	noncePrefixLength = 4
-)
-
-// prefixNonceAEAD wraps an AEAD and prefixes a fixed portion of the nonce to
-// each call.
-type prefixNonceAEAD struct {
-	// nonce contains the fixed part of the nonce in the first four bytes.
-	nonce [aeadNonceLength]byte
-	aead  cipher.AEAD
-}
-
-func (f *prefixNonceAEAD) NonceSize() int        { return aeadNonceLength - noncePrefixLength }
-func (f *prefixNonceAEAD) Overhead() int         { return f.aead.Overhead() }
-func (f *prefixNonceAEAD) explicitNonceLen() int { return f.NonceSize() }
-
-func (f *prefixNonceAEAD) Seal(out, nonce, plaintext, additionalData []byte) []byte {
-	copy(f.nonce[4:], nonce)
-	return f.aead.Seal(out, f.nonce[:], plaintext, additionalData)
-}
-
-func (f *prefixNonceAEAD) Open(out, nonce, ciphertext, additionalData []byte) ([]byte, error) {
-	copy(f.nonce[4:], nonce)
-	return f.aead.Open(out, f.nonce[:], ciphertext, additionalData)
-}
-
-// xoredNonceAEAD wraps an AEAD by XORing in a fixed pattern to the nonce
-// before each call.
-type xorNonceAEAD struct {
-	nonceMask [aeadNonceLength]byte
-	aead      cipher.AEAD
-}
-
-func (f *xorNonceAEAD) NonceSize() int        { return 8 } // 64-bit sequence number
-func (f *xorNonceAEAD) Overhead() int         { return f.aead.Overhead() }
-func (f *xorNonceAEAD) explicitNonceLen() int { return 0 }
-
-func (f *xorNonceAEAD) Seal(out, nonce, plaintext, additionalData []byte) []byte {
-	for i, b := range nonce {
-		f.nonceMask[4+i] ^= b
-	}
-	result := f.aead.Seal(out, f.nonceMask[:], plaintext, additionalData)
-	for i, b := range nonce {
-		f.nonceMask[4+i] ^= b
-	}
-
-	return result
-}
-
-func (f *xorNonceAEAD) Open(out, nonce, ciphertext, additionalData []byte) ([]byte, error) {
-	for i, b := range nonce {
-		f.nonceMask[4+i] ^= b
-	}
-	result, err := f.aead.Open(out, f.nonceMask[:], ciphertext, additionalData)
-	for i, b := range nonce {
-		f.nonceMask[4+i] ^= b
-	}
-
-	return result, err
-}
-
-func aeadAESGCM(key, noncePrefix []byte) aead {
-	if len(noncePrefix) != noncePrefixLength {
-		panic("tls: internal error: wrong nonce length")
-	}
-	aes, err := aes.NewCipher(key)
-	if err != nil {
-		panic(err)
-	}
-	var aead cipher.AEAD
-	//if boring.Enabled {
-	//	aead, err = boring.NewGCMTLS(aes)
-	//} else {
-	//	boring.Unreachable()
-	aead, err = cipher.NewGCM(aes)
-	//}
-	if err != nil {
-		panic(err)
-	}
-
-	ret := &prefixNonceAEAD{aead: aead}
-	copy(ret.nonce[:], noncePrefix)
-	return ret
-}
-
-func aeadAESGCMTLS13(key, nonceMask []byte) aead {
-	if len(nonceMask) != aeadNonceLength {
-		panic("tls: internal error: wrong nonce length")
-	}
-	aes, err := aes.NewCipher(key)
-	if err != nil {
-		panic(err)
-	}
-	aead, err := cipher.NewGCM(aes)
-	if err != nil {
-		panic(err)
-	}
-
-	ret := &xorNonceAEAD{aead: aead}
-	copy(ret.nonceMask[:], nonceMask)
-	return ret
-}
-
-func aeadChaCha20Poly1305(key, nonceMask []byte) aead {
-	if len(nonceMask) != aeadNonceLength {
-		panic("tls: internal error: wrong nonce length")
-	}
-	aead, err := chacha20poly1305.New(key)
-	if err != nil {
-		panic(err)
-	}
-
-	ret := &xorNonceAEAD{aead: aead}
-	copy(ret.nonceMask[:], nonceMask)
-	return ret
-}
-
-type constantTimeHash interface {
-	hash.Hash
-	ConstantTimeSum(b []byte) []byte
-}
-
-// cthWrapper wraps any hash.Hash that implements ConstantTimeSum, and replaces
-// with that all calls to Sum. It's used to obtain a ConstantTimeSum-based HMAC.
-type cthWrapper struct {
-	h constantTimeHash
-}
-
-func (c *cthWrapper) Size() int                   { return c.h.Size() }
-func (c *cthWrapper) BlockSize() int              { return c.h.BlockSize() }
-func (c *cthWrapper) Reset()                      { c.h.Reset() }
-func (c *cthWrapper) Write(p []byte) (int, error) { return c.h.Write(p) }
-func (c *cthWrapper) Sum(b []byte) []byte         { return c.h.ConstantTimeSum(b) }
-
-func newConstantTimeHash(h func() hash.Hash) func() hash.Hash {
-	// boring.Unreachable()
-	return func() hash.Hash {
-		return &cthWrapper{h().(constantTimeHash)}
-	}
-}
-
-// tls10MAC implements the TLS 1.0 MAC function. RFC 2246, Section 6.2.3.
-func tls10MAC(h hash.Hash, out, seq, header, data, extra []byte) []byte {
-	h.Reset()
-	h.Write(seq)
-	h.Write(header)
-	h.Write(data)
-	res := h.Sum(out)
-	if extra != nil {
-		h.Write(extra)
-	}
-	return res
-}
-
-func rsaKA(version uint16) keyAgreement {
-	return rsaKeyAgreement{}
-}
-
-func ecdheECDSAKA(version uint16) keyAgreement {
-	return &ecdheKeyAgreement{
-		isRSA:   false,
-		version: version,
-	}
-}
-
-func ecdheRSAKA(version uint16) keyAgreement {
-	return &ecdheKeyAgreement{
-		isRSA:   true,
-		version: version,
-	}
-}
-
-// mutualCipherSuite returns a cipherSuite given a list of supported
-// ciphersuites and the id requested by the peer.
-func mutualCipherSuite(have []uint16, want uint16) *cipherSuite {
-	for _, id := range have {
-		if id == want {
-			return cipherSuiteByID(id)
-		}
-	}
-	return nil
-}
-
-func cipherSuiteByID(id uint16) *cipherSuite {
-	for _, cipherSuite := range cipherSuites {
-		if cipherSuite.id == id {
-			return cipherSuite
-		}
-	}
-	return nil
-}
-
-func mutualCipherSuiteTLS13(have []uint16, want uint16) *cipherSuiteTLS13 {
-	for _, id := range have {
-		if id == want {
-			return cipherSuiteTLS13ByID(id)
-		}
-	}
-	return nil
-}
-
-func cipherSuiteTLS13ByID(id uint16) *cipherSuiteTLS13 {
-	for _, cipherSuite := range cipherSuitesTLS13 {
-		if cipherSuite.id == id {
-			return cipherSuite
-		}
-	}
-	return nil
-}
-
-// A list of cipher suite IDs that are, or have been, implemented by this
-// package.
-//
-// See https://www.iana.org/assignments/tls-parameters/tls-parameters.xml
-const (
-	// TLS 1.0 - 1.2 cipher suites.
-	TLS_RSA_WITH_RC4_128_SHA                      uint16 = 0x0005
-	TLS_RSA_WITH_3DES_EDE_CBC_SHA                 uint16 = 0x000a
-	TLS_RSA_WITH_AES_128_CBC_SHA                  uint16 = 0x002f
-	TLS_RSA_WITH_AES_256_CBC_SHA                  uint16 = 0x0035
-	TLS_RSA_WITH_AES_128_CBC_SHA256               uint16 = 0x003c
-	TLS_RSA_WITH_AES_128_GCM_SHA256               uint16 = 0x009c
-	TLS_RSA_WITH_AES_256_GCM_SHA384               uint16 = 0x009d
-	TLS_ECDHE_ECDSA_WITH_RC4_128_SHA              uint16 = 0xc007
-	TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA          uint16 = 0xc009
-	TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA          uint16 = 0xc00a
-	TLS_ECDHE_RSA_WITH_RC4_128_SHA                uint16 = 0xc011
-	TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA           uint16 = 0xc012
-	TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA            uint16 = 0xc013
-	TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA            uint16 = 0xc014
-	TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256       uint16 = 0xc023
-	TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256         uint16 = 0xc027
-	TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256         uint16 = 0xc02f
-	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256       uint16 = 0xc02b
-	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384         uint16 = 0xc030
-	TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384       uint16 = 0xc02c
-	TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256   uint16 = 0xcca8
-	TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 uint16 = 0xcca9
-
-	// TLS 1.3 cipher suites.
-	TLS_AES_128_GCM_SHA256       uint16 = 0x1301
-	TLS_AES_256_GCM_SHA384       uint16 = 0x1302
-	TLS_CHACHA20_POLY1305_SHA256 uint16 = 0x1303
-
-	// TLS_FALLBACK_SCSV isn't a standard cipher suite but an indicator
-	// that the client is doing version fallback. See RFC 7507.
-	TLS_FALLBACK_SCSV uint16 = 0x5600
-
-	// Legacy names for the corresponding cipher suites with the correct _SHA256
-	// suffix, retained for backward compatibility.
-	TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305   = TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
-	TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305 = TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256
-)