crypto/tls: implement TLS 1.2.

This does not include AES-GCM yet. Also, it assumes that the handshake and
certificate signature hash are always SHA-256, which is true of the ciphersuites
that we currently support.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/10762044

cipher_suites.go

@@ -42,7 +42,7 @@ type cipherSuite struct {
 	keyLen int
 	macLen int
 	ivLen  int
-	ka     func() keyAgreement
+	ka     func(version uint16) keyAgreement
 	// If elliptic is set, a server will only consider this ciphersuite if
 	// the ClientHello indicated that the client supports an elliptic curve
 	// and point format that we can handle.
@@ -157,12 +157,14 @@ func (s tls10MAC) MAC(digestBuf, seq, header, data []byte) []byte {
 	return s.h.Sum(digestBuf[:0])
 }
 
-func rsaKA() keyAgreement {
+func rsaKA(version uint16) keyAgreement {
 	return rsaKeyAgreement{}
 }
 
-func ecdheRSAKA() keyAgreement {
-	return new(ecdheRSAKeyAgreement)
+func ecdheRSAKA(version uint16) keyAgreement {
+	return &ecdheRSAKeyAgreement{
+		version: version,
+	}
 }
 
 // mutualCipherSuite returns a cipherSuite given a list of supported

common.go

@@ -18,6 +18,7 @@ const (
 	VersionSSL30 = 0x0300
 	VersionTLS10 = 0x0301
 	VersionTLS11 = 0x0302
+	VersionTLS12 = 0x0303
 )
 
 const (
@@ -27,7 +28,7 @@ const (
 	maxHandshake    = 65536        // maximum handshake we support (protocol max is 16 MB)
 
 	minVersion = VersionSSL30
-	maxVersion = VersionTLS11
+	maxVersion = VersionTLS12
 )
 
 // TLS record types.
@@ -63,12 +64,13 @@ const (
 
 // TLS extension numbers
 var (
-	extensionServerName      uint16 = 0
-	extensionStatusRequest   uint16 = 5
-	extensionSupportedCurves uint16 = 10
-	extensionSupportedPoints uint16 = 11
-	extensionSessionTicket   uint16 = 35
-	extensionNextProtoNeg    uint16 = 13172 // not IANA assigned
+	extensionServerName          uint16 = 0
+	extensionStatusRequest       uint16 = 5
+	extensionSupportedCurves     uint16 = 10
+	extensionSupportedPoints     uint16 = 11
+	extensionSignatureAlgorithms uint16 = 13
+	extensionSessionTicket       uint16 = 35
+	extensionNextProtoNeg        uint16 = 13172 // not IANA assigned
 )
 
 // TLS Elliptic Curves
@@ -99,6 +101,31 @@ const (
 	// Rest of these are reserved by the TLS spec
 )
 
+// Hash functions for TLS 1.2 (See RFC 5246, section A.4.1)
+const (
+	hashSHA1   uint8 = 2
+	hashSHA256 uint8 = 4
+)
+
+// Signature algorithms for TLS 1.2 (See RFC 5246, section A.4.1)
+const (
+	signatureRSA   uint8 = 1
+	signatureECDSA uint8 = 3
+)
+
+// signatureAndHash mirrors the TLS 1.2, SignatureAndHashAlgorithm struct. See
+// RFC 5246, section A.4.1.
+type signatureAndHash struct {
+	hash, signature uint8
+}
+
+// supportedSignatureAlgorithms contains the signature and hash algorithms that
+// the code will adverse as supported both in a TLS 1.2 ClientHello and
+// CertificateRequest.
+var supportedSignatureAlgorithms = []signatureAndHash{
+	{hashSHA256, signatureRSA},
+}
+
 // ConnectionState records basic TLS details about the connection.
 type ConnectionState struct {
 	HandshakeComplete          bool

conn.go

@@ -748,7 +748,9 @@ func (c *Conn) readHandshake() (interface{}, error) {
 	case typeCertificate:
 		m = new(certificateMsg)
 	case typeCertificateRequest:
-		m = new(certificateRequestMsg)
+		m = &certificateRequestMsg{
+			hasSignatureAndHash: c.vers >= VersionTLS12,
+		}
 	case typeCertificateStatus:
 		m = new(certificateStatusMsg)
 	case typeServerKeyExchange:
@@ -758,7 +760,9 @@ func (c *Conn) readHandshake() (interface{}, error) {
 	case typeClientKeyExchange:
 		m = new(clientKeyExchangeMsg)
 	case typeCertificateVerify:
-		m = new(certificateVerifyMsg)
+		m = &certificateVerifyMsg{
+			hasSignatureAndHash: c.vers >= VersionTLS12,
+		}
 	case typeNextProtocol:
 		m = new(nextProtoMsg)
 	case typeFinished:

handshake_client.go

@@ -6,7 +6,6 @@ package tls
 
 import (
 	"bytes"
-	"crypto"
 	"crypto/rsa"
 	"crypto/subtle"
 	"crypto/x509"
@@ -16,8 +15,6 @@ import (
 )
 
 func (c *Conn) clientHandshake() error {
-	finishedHash := newFinishedHash(VersionTLS10)
-
 	if c.config == nil {
 		c.config = defaultConfig()
 	}
@@ -45,7 +42,10 @@ func (c *Conn) clientHandshake() error {
 		return errors.New("short read from Rand")
 	}
 
-	finishedHash.Write(hello.marshal())
+	if hello.vers >= VersionTLS12 {
+		hello.signatureAndHashes = supportedSignatureAlgorithms
+	}
+
 	c.writeRecord(recordTypeHandshake, hello.marshal())
 
 	msg, err := c.readHandshake()
@@ -56,7 +56,6 @@ func (c *Conn) clientHandshake() error {
 	if !ok {
 		return c.sendAlert(alertUnexpectedMessage)
 	}
-	finishedHash.Write(serverHello.marshal())
 
 	vers, ok := c.config.mutualVersion(serverHello.vers)
 	if !ok || vers < VersionTLS10 {
@@ -66,6 +65,10 @@ func (c *Conn) clientHandshake() error {
 	c.vers = vers
 	c.haveVers = true
 
+	finishedHash := newFinishedHash(c.vers)
+	finishedHash.Write(hello.marshal())
+	finishedHash.Write(serverHello.marshal())
+
 	if serverHello.compressionMethod != compressionNone {
 		return c.sendAlert(alertUnexpectedMessage)
 	}
@@ -148,7 +151,7 @@ func (c *Conn) clientHandshake() error {
 		return err
 	}
 
-	keyAgreement := suite.ka()
+	keyAgreement := suite.ka(c.vers)
 
 	skx, ok := msg.(*serverKeyExchangeMsg)
 	if ok {
@@ -269,10 +272,8 @@ func (c *Conn) clientHandshake() error {
 
 	if chainToSend != nil {
 		certVerify := new(certificateVerifyMsg)
-		digest := make([]byte, 0, 36)
-		digest = finishedHash.serverMD5.Sum(digest)
-		digest = finishedHash.serverSHA1.Sum(digest)
-		signed, err := rsa.SignPKCS1v15(c.config.rand(), c.config.Certificates[0].PrivateKey.(*rsa.PrivateKey), crypto.MD5SHA1, digest)
+		digest, hashFunc := finishedHash.hashForClientCertificate()
+		signed, err := rsa.SignPKCS1v15(c.config.rand(), c.config.Certificates[0].PrivateKey.(*rsa.PrivateKey), hashFunc, digest)
 		if err != nil {
 			return c.sendAlert(alertInternalError)
 		}

handshake_client_test.go

@@ -65,6 +65,15 @@ func TestHandshakeClientTLS11(t *testing.T) {
 	testClientScript(t, "TLS11-ECDHE-AES", tls11ECDHEAESClientScript, &config)
 }
 
+func TestHandshakeClientTLS12(t *testing.T) {
+	config := *testConfig
+	config.MaxVersion = VersionTLS12
+	config.CipherSuites = []uint16{TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA}
+	cert, _ := X509KeyPair(testClientChainCertificate, testClientChainCertificate)
+	config.Certificates = []Certificate{cert}
+	testClientScript(t, "TLS12", clientTLS12Script, &config)
+}
+
 var connect = flag.Bool("connect", false, "connect to a TLS server on :10443")
 
 func TestRunClient(t *testing.T) {
@@ -1802,6 +1811,268 @@ var clientChainCertificateScript = [][]byte{
 	},
 }
 
+var clientTLS12Script = [][]byte{
+	{
+		0x16, 0x03, 0x01, 0x00, 0x52, 0x01, 0x00, 0x00,
+		0x4e, 0x03, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xc0, 0x13,
+		0x01, 0x00, 0x00, 0x23, 0x00, 0x05, 0x00, 0x05,
+		0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a, 0x00,
+		0x08, 0x00, 0x06, 0x00, 0x17, 0x00, 0x18, 0x00,
+		0x19, 0x00, 0x0b, 0x00, 0x02, 0x01, 0x00, 0x00,
+		0x0d, 0x00, 0x04, 0x00, 0x02, 0x04, 0x01,
+	},
+	{
+		0x16, 0x03, 0x03, 0x00, 0x54, 0x02, 0x00, 0x00,
+		0x50, 0x03, 0x03, 0x51, 0xcd, 0xe6, 0x5e, 0x4c,
+		0x36, 0x2f, 0xe1, 0x38, 0x6c, 0xff, 0x9c, 0xe2,
+		0x0f, 0xbb, 0x04, 0x6d, 0x82, 0xa6, 0x1a, 0x85,
+		0xfa, 0x8c, 0x04, 0xb7, 0xcb, 0xcc, 0x39, 0x02,
+		0xb3, 0x24, 0xff, 0x20, 0xaa, 0x79, 0xb0, 0x04,
+		0x70, 0x39, 0x7a, 0x3b, 0xd7, 0xe0, 0x16, 0x43,
+		0x63, 0xd2, 0x04, 0xc9, 0x4a, 0x49, 0x08, 0xf8,
+		0x1c, 0xf6, 0xba, 0x5f, 0xe2, 0x61, 0x8c, 0xa4,
+		0x3d, 0x81, 0x6a, 0x79, 0xc0, 0x13, 0x00, 0x00,
+		0x08, 0x00, 0x0b, 0x00, 0x04, 0x03, 0x00, 0x01,
+		0x02, 0x16, 0x03, 0x03, 0x03, 0xf5, 0x0b, 0x00,
+		0x03, 0xf1, 0x00, 0x03, 0xee, 0x00, 0x03, 0xeb,
+		0x30, 0x82, 0x03, 0xe7, 0x30, 0x82, 0x02, 0xcf,
+		0xa0, 0x03, 0x02, 0x01, 0x02, 0x02, 0x09, 0x00,
+		0xb9, 0xee, 0xd4, 0xd9, 0x55, 0xa5, 0x9e, 0xb3,
+		0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86,
+		0xf7, 0x0d, 0x01, 0x01, 0x05, 0x05, 0x00, 0x30,
+		0x70, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55,
+		0x04, 0x06, 0x13, 0x02, 0x55, 0x4b, 0x31, 0x16,
+		0x30, 0x14, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x0c,
+		0x0d, 0x4f, 0x70, 0x65, 0x6e, 0x53, 0x53, 0x4c,
+		0x20, 0x47, 0x72, 0x6f, 0x75, 0x70, 0x31, 0x22,
+		0x30, 0x20, 0x06, 0x03, 0x55, 0x04, 0x0b, 0x0c,
+		0x19, 0x46, 0x4f, 0x52, 0x20, 0x54, 0x45, 0x53,
+		0x54, 0x49, 0x4e, 0x47, 0x20, 0x50, 0x55, 0x52,
+		0x50, 0x4f, 0x53, 0x45, 0x53, 0x20, 0x4f, 0x4e,
+		0x4c, 0x59, 0x31, 0x25, 0x30, 0x23, 0x06, 0x03,
+		0x55, 0x04, 0x03, 0x0c, 0x1c, 0x4f, 0x70, 0x65,
+		0x6e, 0x53, 0x53, 0x4c, 0x20, 0x54, 0x65, 0x73,
+		0x74, 0x20, 0x49, 0x6e, 0x74, 0x65, 0x72, 0x6d,
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+		0x41, 0x30, 0x1e, 0x17, 0x0d, 0x31, 0x31, 0x31,
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+		0x38, 0x5a, 0x17, 0x0d, 0x32, 0x31, 0x31, 0x30,
+		0x31, 0x36, 0x31, 0x34, 0x30, 0x31, 0x34, 0x38,
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+		0x31, 0x16, 0x30, 0x14, 0x06, 0x03, 0x55, 0x04,
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+		0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x01,
+		0x05, 0x00, 0x03, 0x82, 0x01, 0x0f, 0x00, 0x30,
+		0x82, 0x01, 0x0a, 0x02, 0x82, 0x01, 0x01, 0x00,
+		0xf3, 0x84, 0xf3, 0x92, 0x36, 0xdc, 0xb2, 0x46,
+		0xca, 0x66, 0x7a, 0xe5, 0x29, 0xc5, 0xf3, 0x49,
+		0x28, 0x22, 0xd3, 0xb9, 0xfe, 0xe0, 0xde, 0xe4,
+		0x38, 0xce, 0xee, 0x22, 0x1c, 0xe9, 0x91, 0x3b,
+		0x94, 0xd0, 0x72, 0x2f, 0x87, 0x85, 0x59, 0x4b,
+		0x66, 0xb1, 0xc5, 0xf5, 0x7a, 0x85, 0x5d, 0xc2,
+		0x0f, 0xd3, 0x2e, 0x29, 0x58, 0x36, 0xcc, 0x48,
+		0x6b, 0xa2, 0xa2, 0xb5, 0x26, 0xce, 0x67, 0xe2,
+		0x47, 0xb6, 0xdf, 0x49, 0xd2, 0x3f, 0xfa, 0xa2,
+		0x10, 0xb7, 0xc2, 0x97, 0x44, 0x7e, 0x87, 0x34,
+		0x6d, 0x6d, 0xf2, 0x8b, 0xb4, 0x55, 0x2b, 0xd6,
+		0x21, 0xde, 0x53, 0x4b, 0x90, 0xea, 0xfd, 0xea,
+		0xf9, 0x38, 0x35, 0x2b, 0xf4, 0xe6, 0x9a, 0x0e,
+		0xf6, 0xbb, 0x12, 0xab, 0x87, 0x21, 0xc3, 0x2f,
+		0xbc, 0xf4, 0x06, 0xb8, 0x8f, 0x8e, 0x10, 0x07,
+		0x27, 0x95, 0xe5, 0x42, 0xcb, 0xd1, 0xd5, 0x10,
+		0x8c, 0x92, 0xac, 0xee, 0x0f, 0xdc, 0x23, 0x48,
+		0x89, 0xc9, 0xc6, 0x93, 0x0c, 0x22, 0x02, 0xe7,
+		0x74, 0xe7, 0x25, 0x00, 0xab, 0xf8, 0x0f, 0x5c,
+		0x10, 0xb5, 0x85, 0x3b, 0x66, 0x94, 0xf0, 0xfb,
+		0x4d, 0x57, 0x06, 0x55, 0x21, 0x22, 0x25, 0xdb,
+		0xf3, 0xaa, 0xa9, 0x60, 0xbf, 0x4d, 0xaa, 0x79,
+		0xd1, 0xab, 0x92, 0x48, 0xba, 0x19, 0x8e, 0x12,
+		0xec, 0x68, 0xd9, 0xc6, 0xba, 0xdf, 0xec, 0x5a,
+		0x1c, 0xd8, 0x43, 0xfe, 0xe7, 0x52, 0xc9, 0xcf,
+		0x02, 0xd0, 0xc7, 0x7f, 0xc9, 0x7e, 0xb0, 0x94,
+		0xe3, 0x53, 0x44, 0x58, 0x0b, 0x2e, 0xfd, 0x29,
+		0x74, 0xb5, 0x06, 0x9b, 0x5c, 0x44, 0x8d, 0xfb,
+		0x32, 0x75, 0xa4, 0x3a, 0xa8, 0x67, 0x7b, 0x87,
+		0x32, 0x0a, 0x50, 0x8d, 0xe1, 0xa2, 0x13, 0x4a,
+		0x25, 0xaf, 0xe6, 0x1c, 0xb1, 0x25, 0xbf, 0xb4,
+		0x99, 0xa2, 0x53, 0xd3, 0xa2, 0x02, 0xbf, 0x11,
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+		0x30, 0x81, 0x8c, 0x30, 0x0c, 0x06, 0x03, 0x55,
+		0x1d, 0x13, 0x01, 0x01, 0xff, 0x04, 0x02, 0x30,
+		0x00, 0x30, 0x0e, 0x06, 0x03, 0x55, 0x1d, 0x0f,
+		0x01, 0x01, 0xff, 0x04, 0x04, 0x03, 0x02, 0x05,
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+		0xd1, 0xf7, 0x39, 0x25, 0x9a, 0x27, 0xe7, 0xaf,
+		0xd2, 0xef, 0x20, 0x1b, 0x6e, 0xac, 0x30, 0x1f,
+		0x06, 0x03, 0x55, 0x1d, 0x23, 0x04, 0x18, 0x30,
+		0x16, 0x80, 0x14, 0x36, 0xc3, 0x6c, 0x88, 0xe7,
+		0x95, 0xfe, 0xb0, 0xbd, 0xec, 0xce, 0x3e, 0x3d,
+		0x86, 0xab, 0x21, 0x81, 0x87, 0xda, 0xda, 0x30,
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+		0x01, 0x01, 0x00, 0xa9, 0xbd, 0x4d, 0x57, 0x40,
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+		0x63, 0x63, 0x36, 0xb9, 0x9e, 0x36, 0x6a, 0xb1,
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+		0xc8, 0xbb, 0x2b, 0x9e, 0x5a, 0xf4, 0x08, 0x34,
+		0x39, 0x47, 0xb9, 0x02, 0x08, 0x31, 0x9a, 0xf1,
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+		0x6d, 0x40, 0xa9, 0x5b, 0x65, 0x28, 0xcb, 0xcb,
+		0x00, 0x03, 0x82, 0x63, 0x37, 0xd3, 0xad, 0xb1,
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+		0xf0, 0x18, 0x30, 0xf3, 0x7e, 0xf1, 0x85, 0x3f,
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+		0xc6, 0x85, 0x4b, 0x2d, 0x27, 0xad, 0x0a, 0x20,
+		0x5c, 0xfb, 0x8d, 0x19, 0x70, 0x34, 0xb9, 0x75,
+		0x5f, 0x7c, 0x87, 0xd5, 0xc3, 0xec, 0x93, 0x13,
+		0x41, 0xfc, 0x73, 0x03, 0xb9, 0x8d, 0x1a, 0xfe,
+		0xf7, 0x26, 0x86, 0x49, 0x03, 0xa9, 0xc5, 0x82,
+		0x3f, 0x80, 0x0d, 0x29, 0x49, 0xb1, 0x8f, 0xed,
+		0x24, 0x1b, 0xfe, 0xcf, 0x58, 0x90, 0x46, 0xe7,
+		0xa8, 0x87, 0xd4, 0x1e, 0x79, 0xef, 0x99, 0x6d,
+		0x18, 0x9f, 0x3e, 0x8b, 0x82, 0x07, 0xc1, 0x43,
+		0xc7, 0xe0, 0x25, 0xb6, 0xf1, 0xd3, 0x00, 0xd7,
+		0x40, 0xab, 0x4b, 0x7f, 0x2b, 0x7a, 0x3e, 0xa6,
+		0x99, 0x4c, 0x54, 0x16, 0x03, 0x03, 0x01, 0x4d,
+		0x0c, 0x00, 0x01, 0x49, 0x03, 0x00, 0x17, 0x41,
+		0x04, 0x8f, 0x92, 0xa0, 0x20, 0xdc, 0x70, 0xce,
+		0xaf, 0x50, 0x44, 0xa8, 0x53, 0x15, 0xbf, 0x74,
+		0x0c, 0xed, 0x60, 0x26, 0xac, 0xb0, 0x07, 0x17,
+		0x59, 0x02, 0x6d, 0x9f, 0x45, 0x57, 0x3b, 0x9c,
+		0x67, 0xae, 0xb8, 0xa6, 0x70, 0xa9, 0x03, 0xb4,
+		0x37, 0x7b, 0xe4, 0x2f, 0x7c, 0x42, 0x4f, 0xaa,
+		0x9a, 0x5d, 0x10, 0x65, 0xc1, 0xa5, 0x33, 0xff,
+		0xc5, 0xdf, 0x24, 0xdb, 0x8f, 0xe2, 0x14, 0xee,
+		0x00, 0x04, 0x01, 0x01, 0x00, 0x76, 0xcf, 0xe6,
+		0x47, 0xcf, 0xc1, 0x58, 0xf5, 0x5d, 0x3a, 0x0b,
+		0xd5, 0x4e, 0xb1, 0x08, 0xa6, 0x03, 0x8b, 0xa3,
+		0x7b, 0x9c, 0xa2, 0x3b, 0x99, 0x7e, 0x42, 0x0d,
+		0x38, 0x6e, 0x9a, 0x5e, 0xf7, 0x45, 0x7f, 0xf3,
+		0x51, 0xa2, 0xe6, 0xae, 0x1c, 0x55, 0x2a, 0x58,
+		0x13, 0x55, 0xa9, 0x93, 0xac, 0x6a, 0x1e, 0xd6,
+		0xd9, 0x98, 0x89, 0x93, 0x16, 0x8f, 0xab, 0xc5,
+		0x65, 0x65, 0x62, 0x68, 0xd8, 0xbf, 0xbd, 0x4e,
+		0x1a, 0x17, 0x24, 0x9c, 0x3c, 0x56, 0xf5, 0x8f,
+		0xda, 0x6e, 0x03, 0xe7, 0xe9, 0xce, 0xe5, 0xb1,
+		0x68, 0xd8, 0x88, 0xdb, 0xde, 0xfe, 0x98, 0xbe,
+		0x9d, 0x1f, 0x86, 0xbf, 0x36, 0xe5, 0xe9, 0x77,
+		0xc3, 0xa6, 0xa3, 0x30, 0x60, 0x9f, 0x36, 0x65,
+		0x4c, 0xe5, 0xb6, 0x3f, 0xf8, 0x15, 0x76, 0xac,
+		0x4f, 0xb5, 0x8a, 0x98, 0xe3, 0xc2, 0xbd, 0x13,
+		0xff, 0x59, 0xfd, 0x22, 0xbf, 0xb3, 0x02, 0xab,
+		0xf1, 0x82, 0xff, 0x4c, 0x41, 0x81, 0x15, 0xa5,
+		0xc7, 0x56, 0x93, 0xc3, 0xb0, 0xd2, 0x70, 0x84,
+		0xb6, 0x27, 0x43, 0x47, 0x38, 0x3a, 0xcf, 0x20,
+		0xa4, 0x97, 0x61, 0xc7, 0xf9, 0xb2, 0x01, 0xea,
+		0x83, 0x72, 0x00, 0x74, 0x3e, 0x41, 0xd0, 0x24,
+		0x32, 0xf7, 0xe1, 0x68, 0xae, 0x06, 0xcb, 0x70,
+		0x06, 0x3a, 0x3a, 0xd3, 0x97, 0x7e, 0xaa, 0x27,
+		0xb7, 0xcc, 0xd3, 0x7f, 0xb2, 0x07, 0x9e, 0x85,
+		0x16, 0x25, 0x28, 0xee, 0xc7, 0x29, 0x09, 0x56,
+		0x94, 0x6c, 0x7e, 0xe4, 0x61, 0x7b, 0xc2, 0xd5,
+		0x03, 0x46, 0x71, 0x69, 0xc0, 0x90, 0x0e, 0x58,
+		0xc6, 0xef, 0xf5, 0x23, 0x03, 0x42, 0x92, 0x1a,
+		0x2f, 0x4b, 0x0a, 0x5d, 0x74, 0x71, 0x28, 0x5a,
+		0x83, 0xf2, 0x00, 0x79, 0x65, 0x89, 0x61, 0x87,
+		0x31, 0xf0, 0x09, 0x89, 0x6a, 0xc4, 0x48, 0xee,
+		0x78, 0xf1, 0x65, 0x3f, 0xe1, 0x16, 0x03, 0x03,
+		0x00, 0x5a, 0x0d, 0x00, 0x00, 0x52, 0x03, 0x01,
+		0x02, 0x40, 0x00, 0x20, 0x06, 0x01, 0x06, 0x02,
+		0x06, 0x03, 0x05, 0x01, 0x05, 0x02, 0x05, 0x03,
+		0x04, 0x01, 0x04, 0x02, 0x04, 0x03, 0x03, 0x01,
+		0x03, 0x02, 0x03, 0x03, 0x02, 0x01, 0x02, 0x02,
+		0x02, 0x03, 0x01, 0x01, 0x00, 0x2a, 0x00, 0x28,
+		0x30, 0x26, 0x31, 0x10, 0x30, 0x0e, 0x06, 0x03,
+		0x55, 0x04, 0x0a, 0x13, 0x07, 0x41, 0x63, 0x6d,
+		0x65, 0x20, 0x43, 0x6f, 0x31, 0x12, 0x30, 0x10,
+		0x06, 0x03, 0x55, 0x04, 0x03, 0x13, 0x09, 0x31,
+		0x32, 0x37, 0x2e, 0x30, 0x2e, 0x30, 0x2e, 0x31,
+		0x0e, 0x00, 0x00, 0x00,
+	},
+	{
+		0x16, 0x03, 0x03, 0x00, 0x07, 0x0b, 0x00, 0x00,
+		0x03, 0x00, 0x00, 0x00, 0x16, 0x03, 0x03, 0x00,
+		0x46, 0x10, 0x00, 0x00, 0x42, 0x41, 0x04, 0x1e,
+		0x18, 0x37, 0xef, 0x0d, 0x19, 0x51, 0x88, 0x35,
+		0x75, 0x71, 0xb5, 0xe5, 0x54, 0x5b, 0x12, 0x2e,
+		0x8f, 0x09, 0x67, 0xfd, 0xa7, 0x24, 0x20, 0x3e,
+		0xb2, 0x56, 0x1c, 0xce, 0x97, 0x28, 0x5e, 0xf8,
+		0x2b, 0x2d, 0x4f, 0x9e, 0xf1, 0x07, 0x9f, 0x6c,
+		0x4b, 0x5b, 0x83, 0x56, 0xe2, 0x32, 0x42, 0xe9,
+		0x58, 0xb6, 0xd7, 0x49, 0xa6, 0xb5, 0x68, 0x1a,
+		0x41, 0x03, 0x56, 0x6b, 0xdc, 0x5a, 0x89, 0x14,
+		0x03, 0x03, 0x00, 0x01, 0x01, 0x16, 0x03, 0x03,
+		0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x1f, 0xb8, 0x47, 0xfb, 0xd2, 0xba,
+		0x62, 0x74, 0x63, 0x54, 0xb8, 0x03, 0x7b, 0xb9,
+		0x05, 0x87, 0x60, 0x6f, 0xb9, 0xfc, 0x79, 0x96,
+		0xce, 0xf0, 0x84, 0x77, 0x23, 0x1b, 0x44, 0x3f,
+		0x33, 0xe8, 0x71, 0x97, 0x9d, 0xd3, 0x7d, 0x43,
+		0x40, 0xd3, 0x95, 0x65, 0x1f, 0x2c, 0x30, 0xfd,
+		0x7f, 0xac,
+	},
+	{
+		0x14, 0x03, 0x03, 0x00, 0x01, 0x01, 0x16, 0x03,
+		0x03, 0x00, 0x40, 0x64, 0x09, 0x6c, 0x06, 0x5a,
+		0x01, 0x24, 0x10, 0xd9, 0x92, 0x66, 0xe6, 0x28,
+		0x43, 0x2f, 0xba, 0x0b, 0x17, 0x61, 0x55, 0x42,
+		0x9d, 0xc3, 0x59, 0xba, 0x57, 0x19, 0x1b, 0x74,
+		0x22, 0x40, 0xc7, 0x13, 0x95, 0x83, 0xe6, 0xf3,
+		0x11, 0x62, 0xe6, 0xde, 0xfc, 0xf3, 0x1a, 0xd1,
+		0x3d, 0xce, 0xd1, 0xf9, 0xeb, 0x2e, 0x13, 0x39,
+		0xa6, 0xdb, 0x04, 0x79, 0xaa, 0x2d, 0xe1, 0xa4,
+		0xd0, 0xf9, 0x36,
+	},
+	{
+		0x17, 0x03, 0x03, 0x00, 0x30, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x88, 0x3d,
+		0xcb, 0x65, 0xc1, 0xac, 0x94, 0xc5, 0x1d, 0x4d,
+		0xc5, 0x1e, 0xd4, 0x17, 0xe3, 0x83, 0xac, 0x14,
+		0x80, 0x92, 0x2d, 0x5b, 0x42, 0x19, 0xcb, 0x51,
+		0xc9, 0x48, 0xdf, 0xf6, 0x27, 0x15, 0x03, 0x03,
+		0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0xf7, 0xc2, 0xed, 0x1a, 0x88, 0xb6,
+		0xb8, 0x26, 0x04, 0x31, 0x89, 0xab, 0x29, 0x34,
+		0xce, 0x84, 0x81, 0x33, 0x64, 0x8e, 0x53, 0xa3,
+		0xaf, 0x8b, 0x5a, 0x50, 0x43, 0xab, 0x77, 0x77,
+		0xa3, 0xc7,
+	},
+}
+
 var testClientChainCertificate = fromHex(
 	"2d2d2d2d2d424547494e2050524956415445204b" +
 		"45592d2d2d2d2d0a4d494945766749424144414e" +

handshake_messages.go

@@ -20,6 +20,7 @@ type clientHelloMsg struct {
 	supportedPoints    []uint8
 	ticketSupported    bool
 	sessionTicket      []uint8
+	signatureAndHashes []signatureAndHash
 }
 
 func (m *clientHelloMsg) equal(i interface{}) bool {
@@ -40,7 +41,8 @@ func (m *clientHelloMsg) equal(i interface{}) bool {
 		eqUint16s(m.supportedCurves, m1.supportedCurves) &&
 		bytes.Equal(m.supportedPoints, m1.supportedPoints) &&
 		m.ticketSupported == m1.ticketSupported &&
-		bytes.Equal(m.sessionTicket, m1.sessionTicket)
+		bytes.Equal(m.sessionTicket, m1.sessionTicket) &&
+		eqSignatureAndHashes(m.signatureAndHashes, m1.signatureAndHashes)
 }
 
 func (m *clientHelloMsg) marshal() []byte {
@@ -74,6 +76,10 @@ func (m *clientHelloMsg) marshal() []byte {
 		extensionsLength += len(m.sessionTicket)
 		numExtensions++
 	}
+	if len(m.signatureAndHashes) > 0 {
+		extensionsLength += 2 + 2*len(m.signatureAndHashes)
+		numExtensions++
+	}
 	if numExtensions > 0 {
 		extensionsLength += 4 * numExtensions
 		length += 2 + extensionsLength
@@ -199,6 +205,25 @@ func (m *clientHelloMsg) marshal() []byte {
 		copy(z, m.sessionTicket)
 		z = z[len(m.sessionTicket):]
 	}
+	if len(m.signatureAndHashes) > 0 {
+		// https://tools.ietf.org/html/rfc5246#section-7.4.1.4.1
+		z[0] = byte(extensionSignatureAlgorithms >> 8)
+		z[1] = byte(extensionSignatureAlgorithms)
+		l := 2 + 2*len(m.signatureAndHashes)
+		z[2] = byte(l >> 8)
+		z[3] = byte(l)
+		z = z[4:]
+
+		l -= 2
+		z[0] = byte(l >> 8)
+		z[1] = byte(l)
+		z = z[2:]
+		for _, sigAndHash := range m.signatureAndHashes {
+			z[0] = sigAndHash.hash
+			z[1] = sigAndHash.signature
+			z = z[2:]
+		}
+	}
 
 	m.raw = x
 
@@ -249,6 +274,7 @@ func (m *clientHelloMsg) unmarshal(data []byte) bool {
 	m.ocspStapling = false
 	m.ticketSupported = false
 	m.sessionTicket = nil
+	m.signatureAndHashes = nil
 
 	if len(data) == 0 {
 		// ClientHello is optionally followed by extension data
@@ -336,6 +362,23 @@ func (m *clientHelloMsg) unmarshal(data []byte) bool {
 			// http://tools.ietf.org/html/rfc5077#section-3.2
 			m.ticketSupported = true
 			m.sessionTicket = data[:length]
+		case extensionSignatureAlgorithms:
+			// https://tools.ietf.org/html/rfc5246#section-7.4.1.4.1
+			if length < 2 || length&1 != 0 {
+				return false
+			}
+			l := int(data[0])<<8 | int(data[1])
+			if l != length-2 {
+				return false
+			}
+			n := l / 2
+			d := data[2:]
+			m.signatureAndHashes = make([]signatureAndHash, n)
+			for i := range m.signatureAndHashes {
+				m.signatureAndHashes[i].hash = d[0]
+				m.signatureAndHashes[i].signature = d[1]
+				d = d[2:]
+			}
 		}
 		data = data[length:]
 	}
@@ -899,8 +942,14 @@ func (m *nextProtoMsg) unmarshal(data []byte) bool {
 }
 
 type certificateRequestMsg struct {
-	raw                    []byte
+	raw []byte
+	// hasSignatureAndHash indicates whether this message includes a list
+	// of signature and hash functions. This change was introduced with TLS
+	// 1.2.
+	hasSignatureAndHash bool
+
 	certificateTypes       []byte
+	signatureAndHashes     []signatureAndHash
 	certificateAuthorities [][]byte
 }
 
@@ -912,7 +961,8 @@ func (m *certificateRequestMsg) equal(i interface{}) bool {
 
 	return bytes.Equal(m.raw, m1.raw) &&
 		bytes.Equal(m.certificateTypes, m1.certificateTypes) &&
-		eqByteSlices(m.certificateAuthorities, m1.certificateAuthorities)
+		eqByteSlices(m.certificateAuthorities, m1.certificateAuthorities) &&
+		eqSignatureAndHashes(m.signatureAndHashes, m1.signatureAndHashes)
 }
 
 func (m *certificateRequestMsg) marshal() (x []byte) {
@@ -928,6 +978,10 @@ func (m *certificateRequestMsg) marshal() (x []byte) {
 	}
 	length += casLength
 
+	if m.hasSignatureAndHash {
+		length += 2 + 2*len(m.signatureAndHashes)
+	}
+
 	x = make([]byte, 4+length)
 	x[0] = typeCertificateRequest
 	x[1] = uint8(length >> 16)
@@ -938,6 +992,19 @@ func (m *certificateRequestMsg) marshal() (x []byte) {
 
 	copy(x[5:], m.certificateTypes)
 	y := x[5+len(m.certificateTypes):]
+
+	if m.hasSignatureAndHash {
+		n := len(m.signatureAndHashes) * 2
+		y[0] = uint8(n >> 8)
+		y[1] = uint8(n)
+		y = y[2:]
+		for _, sigAndHash := range m.signatureAndHashes {
+			y[0] = sigAndHash.hash
+			y[1] = sigAndHash.signature
+			y = y[2:]
+		}
+	}
+
 	y[0] = uint8(casLength >> 8)
 	y[1] = uint8(casLength)
 	y = y[2:]
@@ -978,6 +1045,27 @@ func (m *certificateRequestMsg) unmarshal(data []byte) bool {
 
 	data = data[numCertTypes:]
 
+	if m.hasSignatureAndHash {
+		if len(data) < 2 {
+			return false
+		}
+		sigAndHashLen := uint16(data[0])<<8 | uint16(data[1])
+		data = data[2:]
+		if sigAndHashLen&1 != 0 {
+			return false
+		}
+		if len(data) < int(sigAndHashLen) {
+			return false
+		}
+		numSigAndHash := sigAndHashLen / 2
+		m.signatureAndHashes = make([]signatureAndHash, numSigAndHash)
+		for i := range m.signatureAndHashes {
+			m.signatureAndHashes[i].hash = data[0]
+			m.signatureAndHashes[i].signature = data[1]
+			data = data[2:]
+		}
+	}
+
 	if len(data) < 2 {
 		return false
 	}
@@ -1013,8 +1101,10 @@ func (m *certificateRequestMsg) unmarshal(data []byte) bool {
 }
 
 type certificateVerifyMsg struct {
-	raw       []byte
-	signature []byte
+	raw                 []byte
+	hasSignatureAndHash bool
+	signatureAndHash    signatureAndHash
+	signature           []byte
 }
 
 func (m *certificateVerifyMsg) equal(i interface{}) bool {
@@ -1024,6 +1114,9 @@ func (m *certificateVerifyMsg) equal(i interface{}) bool {
 	}
 
 	return bytes.Equal(m.raw, m1.raw) &&
+		m.hasSignatureAndHash == m1.hasSignatureAndHash &&
+		m.signatureAndHash.hash == m1.signatureAndHash.hash &&
+		m.signatureAndHash.signature == m1.signatureAndHash.signature &&
 		bytes.Equal(m.signature, m1.signature)
 }
 
@@ -1035,14 +1128,23 @@ func (m *certificateVerifyMsg) marshal() (x []byte) {
 	// See http://tools.ietf.org/html/rfc4346#section-7.4.8
 	siglength := len(m.signature)
 	length := 2 + siglength
+	if m.hasSignatureAndHash {
+		length += 2
+	}
 	x = make([]byte, 4+length)
 	x[0] = typeCertificateVerify
 	x[1] = uint8(length >> 16)
 	x[2] = uint8(length >> 8)
 	x[3] = uint8(length)
-	x[4] = uint8(siglength >> 8)
-	x[5] = uint8(siglength)
-	copy(x[6:], m.signature)
+	y := x[4:]
+	if m.hasSignatureAndHash {
+		y[0] = m.signatureAndHash.hash
+		y[1] = m.signatureAndHash.signature
+		y = y[2:]
+	}
+	y[0] = uint8(siglength >> 8)
+	y[1] = uint8(siglength)
+	copy(y[2:], m.signature)
 
 	m.raw = x
 
@@ -1061,12 +1163,23 @@ func (m *certificateVerifyMsg) unmarshal(data []byte) bool {
 		return false
 	}
 
-	siglength := int(data[4])<<8 + int(data[5])
-	if len(data)-6 != siglength {
+	data = data[4:]
+	if m.hasSignatureAndHash {
+		m.signatureAndHash.hash = data[0]
+		m.signatureAndHash.signature = data[1]
+		data = data[2:]
+	}
+
+	if len(data) < 2 {
+		return false
+	}
+	siglength := int(data[0])<<8 + int(data[1])
+	data = data[2:]
+	if len(data) != siglength {
 		return false
 	}
 
-	m.signature = data[6:]
+	m.signature = data
 
 	return true
 }
@@ -1165,3 +1278,16 @@ func eqByteSlices(x, y [][]byte) bool {
 	}
 	return true
 }
+
+func eqSignatureAndHashes(x, y []signatureAndHash) bool {
+	if len(x) != len(y) {
+		return false
+	}
+	for i, v := range x {
+		v2 := y[i]
+		if v.hash != v2.hash || v.signature != v2.signature {
+			return false
+		}
+	}
+	return true
+}

handshake_messages_test.go

@@ -135,6 +135,9 @@ func (*clientHelloMsg) Generate(rand *rand.Rand, size int) reflect.Value {
 			m.sessionTicket = randomBytes(rand.Intn(300), rand)
 		}
 	}
+	if rand.Intn(10) > 5 {
+		m.signatureAndHashes = supportedSignatureAlgorithms
+	}
 
 	return reflect.ValueOf(m)
 }

handshake_server.go

@@ -5,7 +5,6 @@
 package tls
 
 import (
-	"crypto"
 	"crypto/rsa"
 	"crypto/subtle"
 	"crypto/x509"
@@ -292,7 +291,7 @@ func (hs *serverHandshakeState) doFullHandshake() error {
 		c.writeRecord(recordTypeHandshake, certStatus.marshal())
 	}
 
-	keyAgreement := hs.suite.ka()
+	keyAgreement := hs.suite.ka(c.vers)
 	skx, err := keyAgreement.generateServerKeyExchange(config, cert, hs.clientHello, hs.hello)
 	if err != nil {
 		c.sendAlert(alertHandshakeFailure)
@@ -307,6 +306,10 @@ func (hs *serverHandshakeState) doFullHandshake() error {
 		// Request a client certificate
 		certReq := new(certificateRequestMsg)
 		certReq.certificateTypes = []byte{certTypeRSASign}
+		if c.vers >= VersionTLS12 {
+			certReq.hasSignatureAndHash = true
+			certReq.signatureAndHashes = supportedSignatureAlgorithms
+		}
 
 		// An empty list of certificateAuthorities signals to
 		// the client that it may send any certificate in response
@@ -383,10 +386,8 @@ func (hs *serverHandshakeState) doFullHandshake() error {
 			return c.sendAlert(alertUnexpectedMessage)
 		}
 
-		digest := make([]byte, 0, 36)
-		digest = hs.finishedHash.serverMD5.Sum(digest)
-		digest = hs.finishedHash.serverSHA1.Sum(digest)
-		err = rsa.VerifyPKCS1v15(pub, crypto.MD5SHA1, digest, certVerify.signature)
+		digest, hashFunc := hs.finishedHash.hashForClientCertificate()
+		err = rsa.VerifyPKCS1v15(pub, hashFunc, digest, certVerify.signature)
 		if err != nil {
 			c.sendAlert(alertBadCertificate)
 			return errors.New("could not validate signature of connection nonces: " + err.Error())

handshake_server_test.go

@@ -112,7 +112,7 @@ func TestAlertForwarding(t *testing.T) {
 	err := Server(s, testConfig).Handshake()
 	s.Close()
 	if e, ok := err.(*net.OpError); !ok || e.Err != error(alertUnknownCA) {
-		t.Errorf("Got error: %s; expected: %s", err, alertUnknownCA)
+		t.Errorf("Got error: %s; expected: %s", err, error(alertUnknownCA))
 	}
 }
 
@@ -147,6 +147,7 @@ func TestCipherSuitePreference(t *testing.T) {
 	serverConfig := &Config{
 		CipherSuites: []uint16{TLS_RSA_WITH_RC4_128_SHA, TLS_RSA_WITH_AES_128_CBC_SHA, TLS_ECDHE_RSA_WITH_RC4_128_SHA},
 		Certificates: testConfig.Certificates,
+		MaxVersion:   VersionTLS11,
 	}
 	clientConfig := &Config{
 		CipherSuites:       []uint16{TLS_RSA_WITH_AES_128_CBC_SHA, TLS_RSA_WITH_RC4_128_SHA},
@@ -247,6 +248,15 @@ func TestResumption(t *testing.T) {
 	testServerScript(t, "Resume", serverResumeTest, testConfig, nil)
 }
 
+func TestTLS12ClientCertServer(t *testing.T) {
+	config := *testConfig
+	config.MaxVersion = VersionTLS12
+	config.ClientAuth = RequireAnyClientCert
+	config.CipherSuites = []uint16{TLS_ECDHE_RSA_WITH_RC4_128_SHA}
+
+	testServerScript(t, "TLS12", tls12ServerScript, &config, nil)
+}
+
 type clientauthTest struct {
 	name       string
 	clientauth ClientAuthType
@@ -2223,6 +2233,532 @@ var tls11ECDHEAESServerScript = [][]byte{
 	},
 }
 
+var tls12ServerScript = [][]byte{
+	{
+		0x16, 0x03, 0x01, 0x01, 0x46, 0x01, 0x00, 0x01,
+		0x42, 0x03, 0x03, 0x51, 0xcd, 0xe6, 0xe3, 0xe1,
+		0xb7, 0xb8, 0xf9, 0x20, 0xea, 0xc5, 0x8a, 0xe2,
+		0x8b, 0x07, 0x5a, 0x11, 0x0e, 0x54, 0x3c, 0x4f,
+		0x36, 0x06, 0x64, 0x7b, 0x0e, 0xc4, 0xf8, 0x75,
+		0x99, 0x9d, 0x5a, 0x00, 0x00, 0xd0, 0xc0, 0x30,
+		0xc0, 0x2c, 0xc0, 0x28, 0xc0, 0x24, 0xc0, 0x14,
+		0xc0, 0x0a, 0xc0, 0x22, 0xc0, 0x21, 0x00, 0xa5,
+		0x00, 0xa3, 0x00, 0xa1, 0x00, 0x9f, 0x00, 0x6b,
+		0x00, 0x6a, 0x00, 0x69, 0x00, 0x68, 0x00, 0x39,
+		0x00, 0x38, 0x00, 0x37, 0x00, 0x36, 0x00, 0x88,
+		0x00, 0x87, 0x00, 0x86, 0x00, 0x85, 0xc0, 0x32,
+		0xc0, 0x2e, 0xc0, 0x2a, 0xc0, 0x26, 0xc0, 0x0f,
+		0xc0, 0x05, 0x00, 0x9d, 0x00, 0x3d, 0x00, 0x35,
+		0x00, 0x84, 0xc0, 0x12, 0xc0, 0x08, 0xc0, 0x1c,
+		0xc0, 0x1b, 0x00, 0x16, 0x00, 0x13, 0x00, 0x10,
+		0x00, 0x0d, 0xc0, 0x0d, 0xc0, 0x03, 0x00, 0x0a,
+		0xc0, 0x2f, 0xc0, 0x2b, 0xc0, 0x27, 0xc0, 0x23,
+		0xc0, 0x13, 0xc0, 0x09, 0xc0, 0x1f, 0xc0, 0x1e,
+		0x00, 0xa4, 0x00, 0xa2, 0x00, 0xa0, 0x00, 0x9e,
+		0x00, 0x67, 0x00, 0x40, 0x00, 0x3f, 0x00, 0x3e,
+		0x00, 0x33, 0x00, 0x32, 0x00, 0x31, 0x00, 0x30,
+		0x00, 0x9a, 0x00, 0x99, 0x00, 0x98, 0x00, 0x97,
+		0x00, 0x45, 0x00, 0x44, 0x00, 0x43, 0x00, 0x42,
+		0xc0, 0x31, 0xc0, 0x2d, 0xc0, 0x29, 0xc0, 0x25,
+		0xc0, 0x0e, 0xc0, 0x04, 0x00, 0x9c, 0x00, 0x3c,
+		0x00, 0x2f, 0x00, 0x96, 0x00, 0x41, 0x00, 0x07,
+		0xc0, 0x11, 0xc0, 0x07, 0xc0, 0x0c, 0xc0, 0x02,
+		0x00, 0x05, 0x00, 0x04, 0x00, 0x15, 0x00, 0x12,
+		0x00, 0x0f, 0x00, 0x0c, 0x00, 0x09, 0x00, 0x14,
+		0x00, 0x11, 0x00, 0x0e, 0x00, 0x0b, 0x00, 0x08,
+		0x00, 0x06, 0x00, 0x03, 0x00, 0xff, 0x01, 0x00,
+		0x00, 0x49, 0x00, 0x0b, 0x00, 0x04, 0x03, 0x00,
+		0x01, 0x02, 0x00, 0x0a, 0x00, 0x34, 0x00, 0x32,
+		0x00, 0x0e, 0x00, 0x0d, 0x00, 0x19, 0x00, 0x0b,
+		0x00, 0x0c, 0x00, 0x18, 0x00, 0x09, 0x00, 0x0a,
+		0x00, 0x16, 0x00, 0x17, 0x00, 0x08, 0x00, 0x06,
+		0x00, 0x07, 0x00, 0x14, 0x00, 0x15, 0x00, 0x04,
+		0x00, 0x05, 0x00, 0x12, 0x00, 0x13, 0x00, 0x01,
+		0x00, 0x02, 0x00, 0x03, 0x00, 0x0f, 0x00, 0x10,
+		0x00, 0x11, 0x00, 0x23, 0x00, 0x00, 0x00, 0x0f,
+		0x00, 0x01, 0x01,
+	},
+	{
+		0x16, 0x03, 0x03, 0x00, 0x30, 0x02, 0x00, 0x00,
+		0x2c, 0x03, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0xc0, 0x11, 0x00, 0x00,
+		0x04, 0x00, 0x23, 0x00, 0x00, 0x16, 0x03, 0x03,
+		0x02, 0xbe, 0x0b, 0x00, 0x02, 0xba, 0x00, 0x02,
+		0xb7, 0x00, 0x02, 0xb4, 0x30, 0x82, 0x02, 0xb0,
+		0x30, 0x82, 0x02, 0x19, 0xa0, 0x03, 0x02, 0x01,
+		0x02, 0x02, 0x09, 0x00, 0x85, 0xb0, 0xbb, 0xa4,
+		0x8a, 0x7f, 0xb8, 0xca, 0x30, 0x0d, 0x06, 0x09,
+		0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01,
+		0x05, 0x05, 0x00, 0x30, 0x45, 0x31, 0x0b, 0x30,
+		0x09, 0x06, 0x03, 0x55, 0x04, 0x06, 0x13, 0x02,
+		0x41, 0x55, 0x31, 0x13, 0x30, 0x11, 0x06, 0x03,
+		0x55, 0x04, 0x08, 0x13, 0x0a, 0x53, 0x6f, 0x6d,
+		0x65, 0x2d, 0x53, 0x74, 0x61, 0x74, 0x65, 0x31,
+		0x21, 0x30, 0x1f, 0x06, 0x03, 0x55, 0x04, 0x0a,
+		0x13, 0x18, 0x49, 0x6e, 0x74, 0x65, 0x72, 0x6e,
+		0x65, 0x74, 0x20, 0x57, 0x69, 0x64, 0x67, 0x69,
+		0x74, 0x73, 0x20, 0x50, 0x74, 0x79, 0x20, 0x4c,
+		0x74, 0x64, 0x30, 0x1e, 0x17, 0x0d, 0x31, 0x30,
+		0x30, 0x34, 0x32, 0x34, 0x30, 0x39, 0x30, 0x39,
+		0x33, 0x38, 0x5a, 0x17, 0x0d, 0x31, 0x31, 0x30,
+		0x34, 0x32, 0x34, 0x30, 0x39, 0x30, 0x39, 0x33,
+		0x38, 0x5a, 0x30, 0x45, 0x31, 0x0b, 0x30, 0x09,
+		0x06, 0x03, 0x55, 0x04, 0x06, 0x13, 0x02, 0x41,
+		0x55, 0x31, 0x13, 0x30, 0x11, 0x06, 0x03, 0x55,
+		0x04, 0x08, 0x13, 0x0a, 0x53, 0x6f, 0x6d, 0x65,
+		0x2d, 0x53, 0x74, 0x61, 0x74, 0x65, 0x31, 0x21,
+		0x30, 0x1f, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x13,
+		0x18, 0x49, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65,
+		0x74, 0x20, 0x57, 0x69, 0x64, 0x67, 0x69, 0x74,
+		0x73, 0x20, 0x50, 0x74, 0x79, 0x20, 0x4c, 0x74,
+		0x64, 0x30, 0x81, 0x9f, 0x30, 0x0d, 0x06, 0x09,
+		0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01,
+		0x01, 0x05, 0x00, 0x03, 0x81, 0x8d, 0x00, 0x30,
+		0x81, 0x89, 0x02, 0x81, 0x81, 0x00, 0xbb, 0x79,
+		0xd6, 0xf5, 0x17, 0xb5, 0xe5, 0xbf, 0x46, 0x10,
+		0xd0, 0xdc, 0x69, 0xbe, 0xe6, 0x2b, 0x07, 0x43,
+		0x5a, 0xd0, 0x03, 0x2d, 0x8a, 0x7a, 0x43, 0x85,
+		0xb7, 0x14, 0x52, 0xe7, 0xa5, 0x65, 0x4c, 0x2c,
+		0x78, 0xb8, 0x23, 0x8c, 0xb5, 0xb4, 0x82, 0xe5,
+		0xde, 0x1f, 0x95, 0x3b, 0x7e, 0x62, 0xa5, 0x2c,
+		0xa5, 0x33, 0xd6, 0xfe, 0x12, 0x5c, 0x7a, 0x56,
+		0xfc, 0xf5, 0x06, 0xbf, 0xfa, 0x58, 0x7b, 0x26,
+		0x3f, 0xb5, 0xcd, 0x04, 0xd3, 0xd0, 0xc9, 0x21,
+		0x96, 0x4a, 0xc7, 0xf4, 0x54, 0x9f, 0x5a, 0xbf,
+		0xef, 0x42, 0x71, 0x00, 0xfe, 0x18, 0x99, 0x07,
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+		0xc4, 0xa2, 0x2e, 0xdb, 0x51, 0xc9, 0x7c, 0xe3,
+		0xc0, 0x4c, 0x3b, 0x32, 0x66, 0x01, 0xcf, 0xaf,
+		0xb1, 0x1d, 0xb8, 0x71, 0x9a, 0x1d, 0xdb, 0xdb,
+		0x89, 0x6b, 0xae, 0xda, 0x2d, 0x79, 0x02, 0x03,
+		0x01, 0x00, 0x01, 0xa3, 0x81, 0xa7, 0x30, 0x81,
+		0xa4, 0x30, 0x1d, 0x06, 0x03, 0x55, 0x1d, 0x0e,
+		0x04, 0x16, 0x04, 0x14, 0xb1, 0xad, 0xe2, 0x85,
+		0x5a, 0xcf, 0xcb, 0x28, 0xdb, 0x69, 0xce, 0x23,
+		0x69, 0xde, 0xd3, 0x26, 0x8e, 0x18, 0x88, 0x39,
+		0x30, 0x75, 0x06, 0x03, 0x55, 0x1d, 0x23, 0x04,
+		0x6e, 0x30, 0x6c, 0x80, 0x14, 0xb1, 0xad, 0xe2,
+		0x85, 0x5a, 0xcf, 0xcb, 0x28, 0xdb, 0x69, 0xce,
+		0x23, 0x69, 0xde, 0xd3, 0x26, 0x8e, 0x18, 0x88,
+		0x39, 0xa1, 0x49, 0xa4, 0x47, 0x30, 0x45, 0x31,
+		0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x06,
+		0x13, 0x02, 0x41, 0x55, 0x31, 0x13, 0x30, 0x11,
+		0x06, 0x03, 0x55, 0x04, 0x08, 0x13, 0x0a, 0x53,
+		0x6f, 0x6d, 0x65, 0x2d, 0x53, 0x74, 0x61, 0x74,
+		0x65, 0x31, 0x21, 0x30, 0x1f, 0x06, 0x03, 0x55,
+		0x04, 0x0a, 0x13, 0x18, 0x49, 0x6e, 0x74, 0x65,
+		0x72, 0x6e, 0x65, 0x74, 0x20, 0x57, 0x69, 0x64,
+		0x67, 0x69, 0x74, 0x73, 0x20, 0x50, 0x74, 0x79,
+		0x20, 0x4c, 0x74, 0x64, 0x82, 0x09, 0x00, 0x85,
+		0xb0, 0xbb, 0xa4, 0x8a, 0x7f, 0xb8, 0xca, 0x30,
+		0x0c, 0x06, 0x03, 0x55, 0x1d, 0x13, 0x04, 0x05,
+		0x30, 0x03, 0x01, 0x01, 0xff, 0x30, 0x0d, 0x06,
+		0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01,
+		0x01, 0x05, 0x05, 0x00, 0x03, 0x81, 0x81, 0x00,
+		0x08, 0x6c, 0x45, 0x24, 0xc7, 0x6b, 0xb1, 0x59,
+		0xab, 0x0c, 0x52, 0xcc, 0xf2, 0xb0, 0x14, 0xd7,
+		0x87, 0x9d, 0x7a, 0x64, 0x75, 0xb5, 0x5a, 0x95,
+		0x66, 0xe4, 0xc5, 0x2b, 0x8e, 0xae, 0x12, 0x66,
+		0x1f, 0xeb, 0x4f, 0x38, 0xb3, 0x6e, 0x60, 0xd3,
+		0x92, 0xfd, 0xf7, 0x41, 0x08, 0xb5, 0x25, 0x13,
+		0xb1, 0x18, 0x7a, 0x24, 0xfb, 0x30, 0x1d, 0xba,
+		0xed, 0x98, 0xb9, 0x17, 0xec, 0xe7, 0xd7, 0x31,
+		0x59, 0xdb, 0x95, 0xd3, 0x1d, 0x78, 0xea, 0x50,
+		0x56, 0x5c, 0xd5, 0x82, 0x5a, 0x2d, 0x5a, 0x5f,
+		0x33, 0xc4, 0xb6, 0xd8, 0xc9, 0x75, 0x90, 0x96,
+		0x8c, 0x0f, 0x52, 0x98, 0xb5, 0xcd, 0x98, 0x1f,
+		0x89, 0x20, 0x5f, 0xf2, 0xa0, 0x1c, 0xa3, 0x1b,
+		0x96, 0x94, 0xdd, 0xa9, 0xfd, 0x57, 0xe9, 0x70,
+		0xe8, 0x26, 0x6d, 0x71, 0x99, 0x9b, 0x26, 0x6e,
+		0x38, 0x50, 0x29, 0x6c, 0x90, 0xa7, 0xbd, 0xd9,
+		0x16, 0x03, 0x03, 0x01, 0x11, 0x0c, 0x00, 0x01,
+		0x0d, 0x03, 0x00, 0x19, 0x85, 0x04, 0x01, 0x39,
+		0xdc, 0xee, 0x44, 0x17, 0x5e, 0xdb, 0xd7, 0x27,
+		0xaf, 0xb6, 0x56, 0xd9, 0xb4, 0x43, 0x5a, 0x99,
+		0xcf, 0xaa, 0x31, 0x37, 0x0c, 0x6f, 0x3a, 0xa0,
+		0xf8, 0x53, 0xc4, 0x74, 0xd1, 0x91, 0x0a, 0x46,
+		0xf5, 0x38, 0x3b, 0x5c, 0x09, 0xd8, 0x97, 0xdc,
+		0x4b, 0xaa, 0x70, 0x26, 0x48, 0xf2, 0xd6, 0x0b,
+		0x31, 0xc9, 0xf8, 0xd4, 0x98, 0x43, 0xe1, 0x6c,
+		0xd5, 0xc7, 0xb2, 0x8e, 0x0b, 0x01, 0xe6, 0xb6,
+		0x00, 0x28, 0x80, 0x7b, 0xfc, 0x96, 0x8f, 0x0d,
+		0xa2, 0x4f, 0xb0, 0x79, 0xaf, 0xdc, 0x61, 0x28,
+		0x63, 0x33, 0x78, 0xf6, 0x31, 0x39, 0xfd, 0x8a,
+		0xf4, 0x15, 0x18, 0x11, 0xfe, 0xdb, 0xd5, 0x07,
+		0xda, 0x2c, 0xed, 0x49, 0xa0, 0x23, 0xbf, 0xd0,
+		0x3a, 0x38, 0x1d, 0x54, 0xae, 0x1c, 0x7b, 0xea,
+		0x29, 0xee, 0xd0, 0x38, 0xc1, 0x76, 0xa7, 0x7f,
+		0x2a, 0xf4, 0xce, 0x1e, 0xac, 0xcc, 0x94, 0x79,
+		0x90, 0x33, 0x04, 0x01, 0x00, 0x80, 0xac, 0xee,
+		0xef, 0xfa, 0x25, 0x62, 0xee, 0x09, 0x64, 0x9f,
+		0x9b, 0xf9, 0x99, 0x3e, 0xb0, 0x09, 0xb6, 0xfb,
+		0xbd, 0x2a, 0x87, 0x72, 0x56, 0x43, 0xc4, 0x53,
+		0x4c, 0xca, 0x94, 0x09, 0x7e, 0xc7, 0xce, 0xb0,
+		0x2f, 0x7f, 0x21, 0x91, 0xbc, 0x0e, 0x33, 0x74,
+		0x1c, 0xa8, 0x44, 0x51, 0xe5, 0x2f, 0xb5, 0x43,
+		0xad, 0x7a, 0x95, 0xec, 0xd0, 0x4c, 0x6b, 0xb8,
+		0x05, 0x89, 0x29, 0x23, 0x52, 0xe4, 0x89, 0x0d,
+		0x07, 0xbf, 0xe7, 0xf9, 0x76, 0x6c, 0x86, 0xad,
+		0xbd, 0x79, 0x80, 0x2d, 0xfa, 0xb3, 0x08, 0xf0,
+		0xd6, 0x1b, 0xc5, 0x86, 0x41, 0x9a, 0xc5, 0x85,
+		0x68, 0x58, 0x41, 0x9d, 0xa5, 0x14, 0x4b, 0xf5,
+		0xc9, 0x5c, 0xe0, 0x12, 0xf4, 0x33, 0x75, 0x5e,
+		0x05, 0xe7, 0x95, 0xff, 0x25, 0xdf, 0xa8, 0x66,
+		0xc0, 0x5e, 0x00, 0xed, 0x76, 0xe4, 0x3e, 0x2c,
+		0x41, 0x5b, 0x51, 0xca, 0x60, 0x5e, 0x16, 0x03,
+		0x03, 0x00, 0x0c, 0x0d, 0x00, 0x00, 0x08, 0x01,
+		0x01, 0x00, 0x02, 0x04, 0x01, 0x00, 0x00, 0x16,
+		0x03, 0x03, 0x00, 0x04, 0x0e, 0x00, 0x00, 0x00,
+	},
+	{
+		0x16, 0x03, 0x03, 0x03, 0xf5, 0x0b, 0x00, 0x03,
+		0xf1, 0x00, 0x03, 0xee, 0x00, 0x03, 0xeb, 0x30,
+		0x82, 0x03, 0xe7, 0x30, 0x82, 0x02, 0xcf, 0xa0,
+		0x03, 0x02, 0x01, 0x02, 0x02, 0x09, 0x00, 0xb9,
+		0xee, 0xd4, 0xd9, 0x55, 0xa5, 0x9e, 0xb3, 0x30,
+		0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7,
+		0x0d, 0x01, 0x01, 0x05, 0x05, 0x00, 0x30, 0x70,
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+		0x59, 0x31, 0x25, 0x30, 0x23, 0x06, 0x03, 0x55,
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+		0x53, 0x53, 0x4c, 0x20, 0x54, 0x65, 0x73, 0x74,
+		0x20, 0x49, 0x6e, 0x74, 0x65, 0x72, 0x6d, 0x65,
+		0x64, 0x69, 0x61, 0x74, 0x65, 0x20, 0x43, 0x41,
+		0x30, 0x1e, 0x17, 0x0d, 0x31, 0x31, 0x31, 0x32,
+		0x30, 0x38, 0x31, 0x34, 0x30, 0x31, 0x34, 0x38,
+		0x5a, 0x17, 0x0d, 0x32, 0x31, 0x31, 0x30, 0x31,
+		0x36, 0x31, 0x34, 0x30, 0x31, 0x34, 0x38, 0x5a,
+		0x30, 0x64, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03,
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+		0x8a, 0x2b, 0xd3, 0x8a, 0x42, 0x00, 0x54, 0xdf,
+		0x8b, 0x5c, 0x31, 0x65, 0xde, 0xf6, 0x80, 0xbd,
+		0x5e, 0x52, 0x67, 0xc4, 0x67, 0x11, 0x91, 0x9b,
+		0x04, 0x4e, 0x9e, 0xdc, 0xe4, 0x00, 0xa3, 0x24,
+		0x71, 0x3d, 0xe4, 0x05, 0x32, 0x96, 0xed, 0x9a,
+		0x07, 0xd7, 0x41, 0x10, 0x6f, 0xee, 0x43, 0xc1,
+		0xea, 0xdb, 0x5c, 0x51, 0x3c, 0x31, 0x48, 0xd5,
+		0xdb, 0x1e, 0x3d, 0x09, 0x23, 0x89, 0x2f, 0x32,
+		0x26, 0xfe, 0x88, 0x1b, 0x83, 0xf2, 0xba, 0x53,
+		0x41, 0x9a, 0x74, 0xfc, 0x97, 0xd3, 0x0d, 0x16,
+		0xb6, 0x8d, 0x55, 0x81, 0x74, 0xa4, 0xa9, 0xd6,
+		0x27, 0x6b, 0xf7, 0x0c, 0x32, 0x99, 0x1a, 0xcf,
+		0x00, 0x4b, 0xd4, 0xde, 0x0c, 0x6d, 0x52, 0xbc,
+		0x4e, 0xac, 0xa9, 0x28, 0x9b, 0x4e, 0x55, 0x47,
+		0xe3, 0x4b, 0x1a, 0xa0, 0xc0, 0x8d, 0xa9, 0xf6,
+		0xcf, 0xcd, 0x0d, 0x44, 0x4c, 0x71, 0x32, 0xf5,
+		0xb2, 0x0c, 0x5a, 0xc8, 0xfa, 0xa8, 0xcf, 0x35,
+		0x68, 0xd8, 0x55, 0xa2, 0xb2, 0x65, 0xe5, 0x55,
+		0x28, 0x2e, 0xc3, 0x69, 0xf8, 0x75, 0x8d, 0x6d,
+		0x5f, 0xfb, 0x44, 0xb1, 0xf0, 0x86, 0xe5, 0xde,
+		0x0f, 0xe7, 0x51, 0x96, 0x7f, 0x00, 0xa2, 0x1e,
+		0xe2, 0x4b, 0x86, 0xe7, 0x4c, 0xdc, 0x95, 0x53,
+		0xc5, 0xaa, 0x5a, 0x05, 0x5c, 0xa0, 0xde, 0xa8,
+		0xc5, 0x6a, 0xb2, 0x09, 0xd4, 0xa0, 0xed, 0xe1,
+		0x85, 0xb9, 0xa3, 0xde, 0x2b, 0x4d, 0xf9, 0x4a,
+		0x72, 0x50, 0x26, 0xae, 0xf9, 0xc7, 0x78, 0x63,
+		0x20, 0xa2, 0xc4, 0x88, 0xbe, 0xc6, 0x29, 0x4b,
+		0xfc, 0x9c, 0x3d, 0x38, 0x6b, 0x60, 0x76, 0xe9,
+		0xf7, 0xaa, 0x28, 0xc4, 0xe1, 0xfc, 0xfe, 0x3a,
+		0xc3, 0x90, 0xb2, 0x2c, 0x7b, 0x10, 0xce, 0xe3,
+		0xe9, 0x81, 0x87, 0x93, 0x26, 0x2f, 0x97, 0x30,
+		0x4b, 0xf7, 0x10, 0x8e, 0x36, 0xf7, 0x00, 0x3e,
+		0xf8, 0xd4, 0x56, 0xa7, 0x37, 0x07, 0x25, 0x19,
+		0x03, 0x38, 0x0b, 0xdd, 0xec, 0x1a, 0x4f, 0xab,
+		0x43, 0xd2, 0x34, 0x65, 0xba, 0x9f, 0x39, 0xfc,
+		0x95, 0x1a, 0xf4, 0xa4, 0xc2, 0x32, 0x19, 0x23,
+		0x04, 0xdb, 0x11, 0x11, 0xbe, 0xd1, 0xf0, 0x81,
+		0x22, 0xd5, 0xd5, 0x32, 0x44, 0xe6, 0x02, 0xb5,
+		0x34, 0x66, 0x37, 0x48, 0x51, 0xd7, 0x62, 0xb4,
+		0xf7, 0x03, 0x38, 0x29, 0x79, 0x8d, 0x88, 0xa1,
+		0x5c, 0xb0, 0xec, 0xf0, 0xc0, 0xd9, 0x81, 0xf4,
+		0x15, 0xe0, 0x0b, 0x79, 0x87, 0xd8, 0x3e, 0x0f,
+		0xc9, 0x64, 0x1a, 0x36, 0x81, 0xee, 0x44, 0xd6,
+		0xea, 0xe3, 0x3f, 0x63, 0x43, 0xac, 0x0a, 0x40,
+		0xe0, 0x35, 0xb3, 0x5e, 0x34, 0xc3, 0x1b, 0xd7,
+		0x92, 0x8b, 0x6d, 0xf3, 0xae, 0x32, 0xaa, 0x05,
+		0xca, 0x56, 0xb8, 0xb8, 0xed, 0xb3, 0xbd, 0x8a,
+		0xdb, 0x31, 0x99, 0x92, 0x21, 0xe4, 0xe0, 0x23,
+		0x78, 0xa6, 0x09, 0xb0, 0xbc, 0xb1, 0xdc, 0xdd,
+		0x62, 0x2f, 0xcb, 0x22, 0x19, 0xf7, 0xe3, 0xc7,
+		0x5d, 0x62, 0x4a, 0xb9, 0x52, 0x33, 0xf7, 0x15,
+		0xb9, 0x99, 0x3f, 0xf8, 0xa1, 0x12, 0xac, 0x93,
+		0x01, 0x4b, 0x1f, 0x2d, 0x59, 0x02, 0xe3, 0x94,
+		0x1a, 0x98, 0x28, 0xb1, 0xfe, 0x79, 0xf5, 0xca,
+		0x8c, 0xfb, 0x89, 0x6b, 0xe3, 0x4d, 0xf7, 0x42,
+		0x4a, 0xfe, 0x00, 0x0b, 0xbc, 0x20, 0xef, 0x37,
+		0x6a, 0xc6, 0xda, 0x80, 0x0e, 0x57, 0x00, 0xf4,
+		0x95, 0x0c, 0x68, 0x47, 0x5f, 0xbc, 0x24, 0xe9,
+		0x4b, 0xa2, 0x34, 0xb9, 0xc0, 0x0f, 0xe7, 0xaf,
+		0xe4, 0x89, 0xee, 0x68, 0x5e, 0xd7, 0x4e, 0x3b,
+		0x1e, 0x5b, 0x68, 0x38, 0x40, 0x49, 0x73, 0xec,
+		0xf8, 0x38, 0xa6, 0x5a, 0x6a, 0xf7, 0x87, 0xe1,
+		0xb6, 0xf6, 0xb7, 0x16, 0x2e, 0xa2, 0xe9, 0x14,
+		0x2b, 0x22, 0x89, 0x26, 0xc7, 0xac, 0xa4, 0xc5,
+		0xec, 0xfd, 0x72, 0xe8, 0x8c, 0x92, 0xdf, 0x14,
+		0x90, 0xcb, 0xbc, 0xfd, 0x90, 0x2a, 0x6c, 0xc5,
+		0x54, 0xad, 0x0c, 0x40, 0x81, 0x64, 0x8e, 0xe8,
+		0xda, 0x07, 0x6e, 0xc2, 0xbb, 0x19, 0x97, 0x0b,
+		0x23, 0x96, 0xe9, 0x17, 0x15, 0x76, 0x09, 0xf3,
+		0xd3, 0x8b, 0xda, 0x8f, 0x3b, 0x6b, 0x08, 0x1d,
+		0x7d, 0x55, 0x0d, 0x5e, 0x14, 0x6e, 0xda, 0x72,
+		0x8f, 0xd3, 0x22, 0xeb, 0xb7, 0x4b, 0x8f, 0xed,
+		0xe9, 0x20, 0x77, 0xc1, 0x7e, 0x2f, 0x89, 0xfd,
+		0xa3, 0xf6, 0x25, 0x68, 0xc1, 0x1f, 0x44, 0xea,
+		0x17, 0x6c, 0x51, 0xcd, 0x00, 0xc5, 0x91, 0xd6,
+		0x46, 0x90, 0x8f, 0x88, 0x8c, 0x2e, 0xde, 0xd5,
+		0x7d, 0x34, 0x9c, 0x16, 0x15, 0xa0, 0x58, 0x7d,
+		0xe5, 0xab, 0xe6, 0xdc, 0x5f, 0xaa, 0x73, 0x34,
+		0xa9, 0x69, 0xe7, 0x07, 0x11, 0x10, 0xa7, 0x58,
+		0x63, 0xad, 0x5c, 0x89, 0x36, 0x9f, 0x1e, 0x35,
+		0x34, 0x79, 0xbc, 0x79, 0x31, 0xcd, 0x2e, 0x06,
+		0x97, 0x4c, 0x39, 0xfb, 0xba, 0xfa, 0x17, 0x77,
+		0x3f, 0x6c, 0xd3, 0x0b, 0x23, 0x37, 0x08, 0xa4,
+		0x5d, 0x3c, 0x04, 0xc1, 0x2a, 0xc2, 0x93, 0x2b,
+		0xc0, 0xec, 0x7d, 0x61, 0x1f, 0xa2, 0x54, 0x92,
+		0xda, 0x86, 0x34, 0x01, 0x40, 0x48, 0x7f, 0xaf,
+		0x88, 0xfd, 0x3a, 0x05, 0x98, 0xd0, 0xb7, 0x81,
+		0x4d, 0x60, 0x76, 0x8b, 0x39, 0x6e, 0x33, 0x97,
+		0x99, 0xfa, 0x93, 0x0f, 0x7b, 0xb3, 0xaf, 0x95,
+		0xb9, 0xdb, 0xa1, 0xcc, 0x8b, 0x32, 0x14, 0x03,
+		0x03, 0x00, 0x01, 0x01, 0x16, 0x03, 0x03, 0x00,
+		0x24, 0x53, 0x06, 0xc3, 0x99, 0xce, 0x22, 0x41,
+		0x0e, 0x81, 0x2d, 0x6b, 0x35, 0xae, 0xd5, 0x7d,
+		0x7e, 0x6b, 0xb4, 0xe9, 0xe9, 0x06, 0xbc, 0x5b,
+		0x3b, 0xf2, 0x77, 0x2e, 0x0c, 0x2b, 0xba, 0x96,
+		0x93, 0xb7, 0x2e, 0x1d, 0x49, 0x17, 0x03, 0x03,
+		0x00, 0x21, 0x41, 0xb5, 0x78, 0xc2, 0xcb, 0x4e,
+		0x52, 0x72, 0x2b, 0xdf, 0x9b, 0xc6, 0x75, 0x24,
+		0xe1, 0x58, 0xb8, 0xe1, 0x78, 0x39, 0xa0, 0xe4,
+		0x74, 0x00, 0xee, 0x6b, 0xb5, 0xbe, 0xe7, 0x48,
+		0xbe, 0x61, 0x69, 0x15, 0x03, 0x03, 0x00, 0x16,
+		0xcc, 0xf1, 0x43, 0x54, 0x49, 0xd3, 0x17, 0xd1,
+		0x7a, 0xc0, 0x40, 0x05, 0xd0, 0x9e, 0x22, 0xbd,
+		0x5b, 0x5c, 0xd9, 0x7f, 0xce, 0x34,
+	},
+}
+
 // cert.pem and key.pem were generated with generate_cert.go
 // Thus, they have no ExtKeyUsage fields and trigger an error
 // when verification is turned on.

key_agreement.go

@@ -10,6 +10,7 @@ import (
 	"crypto/md5"
 	"crypto/rsa"
 	"crypto/sha1"
+	"crypto/sha256"
 	"crypto/x509"
 	"errors"
 	"io"
@@ -84,7 +85,7 @@ func (ka rsaKeyAgreement) generateClientKeyExchange(config *Config, clientHello
 
 // 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 {
+func md5SHA1Hash(slices [][]byte) []byte {
 	md5sha1 := make([]byte, md5.Size+sha1.Size)
 	hmd5 := md5.New()
 	for _, slice := range slices {
@@ -100,10 +101,29 @@ func md5SHA1Hash(slices ...[]byte) []byte {
 	return md5sha1
 }
 
+// sha256Hash implements TLS 1.2's hash function.
+func sha256Hash(slices [][]byte) []byte {
+	h := sha256.New()
+	for _, slice := range slices {
+		h.Write(slice)
+	}
+	return h.Sum(nil)
+}
+
+// hashForServerKeyExchange hashes the given slices and returns their digest
+// and the identifier of the hash function used.
+func hashForServerKeyExchange(version uint16, slices ...[]byte) ([]byte, crypto.Hash) {
+	if version >= VersionTLS12 {
+		return sha256Hash(slices), crypto.SHA256
+	}
+	return md5SHA1Hash(slices), crypto.MD5SHA1
+}
+
 // ecdheRSAKeyAgreement implements a TLS key agreement where the server
 // generates a ephemeral EC public/private key pair and signs it. The
 // pre-master secret is then calculated using ECDH.
 type ecdheRSAKeyAgreement struct {
+	version    uint16
 	privateKey []byte
 	curve      elliptic.Curve
 	x, y       *big.Int
@@ -150,16 +170,25 @@ Curve:
 	serverECDHParams[3] = byte(len(ecdhePublic))
 	copy(serverECDHParams[4:], ecdhePublic)
 
-	md5sha1 := md5SHA1Hash(clientHello.random, hello.random, serverECDHParams)
-	sig, err := rsa.SignPKCS1v15(config.rand(), cert.PrivateKey.(*rsa.PrivateKey), crypto.MD5SHA1, md5sha1)
+	digest, hashFunc := hashForServerKeyExchange(ka.version, clientHello.random, hello.random, serverECDHParams)
+	sig, err := rsa.SignPKCS1v15(config.rand(), cert.PrivateKey.(*rsa.PrivateKey), hashFunc, digest)
 	if err != nil {
 		return nil, errors.New("failed to sign ECDHE parameters: " + err.Error())
 	}
 
 	skx := new(serverKeyExchangeMsg)
-	skx.key = make([]byte, len(serverECDHParams)+2+len(sig))
+	sigAndHashLen := 0
+	if ka.version >= VersionTLS12 {
+		sigAndHashLen = 2
+	}
+	skx.key = make([]byte, len(serverECDHParams)+sigAndHashLen+2+len(sig))
 	copy(skx.key, serverECDHParams)
 	k := skx.key[len(serverECDHParams):]
+	if ka.version >= VersionTLS12 {
+		k[0] = hashSHA256
+		k[1] = signatureRSA
+		k = k[2:]
+	}
 	k[0] = byte(len(sig) >> 8)
 	k[1] = byte(len(sig))
 	copy(k[2:], sig)
@@ -219,14 +248,21 @@ func (ka *ecdheRSAKeyAgreement) processServerKeyExchange(config *Config, clientH
 	if len(sig) < 2 {
 		return errServerKeyExchange
 	}
+	if ka.version >= VersionTLS12 {
+		// ignore SignatureAndHashAlgorithm
+		sig = sig[2:]
+		if len(sig) < 2 {
+			return errServerKeyExchange
+		}
+	}
 	sigLen := int(sig[0])<<8 | int(sig[1])
 	if sigLen+2 != len(sig) {
 		return errServerKeyExchange
 	}
 	sig = sig[2:]
 
-	md5sha1 := md5SHA1Hash(clientHello.random, serverHello.random, serverECDHParams)
-	return rsa.VerifyPKCS1v15(cert.PublicKey.(*rsa.PublicKey), crypto.MD5SHA1, md5sha1, sig)
+	digest, hashFunc := hashForServerKeyExchange(ka.version, clientHello.random, serverHello.random, serverECDHParams)
+	return rsa.VerifyPKCS1v15(cert.PublicKey.(*rsa.PublicKey), hashFunc, digest, sig)
 }
 
 func (ka *ecdheRSAKeyAgreement) generateClientKeyExchange(config *Config, clientHello *clientHelloMsg, cert *x509.Certificate) ([]byte, *clientKeyExchangeMsg, error) {

prf.go

@@ -5,9 +5,11 @@
 package tls
 
 import (
+	"crypto"
 	"crypto/hmac"
 	"crypto/md5"
 	"crypto/sha1"
+	"crypto/sha256"
 	"hash"
 )
 
@@ -43,8 +45,8 @@ func pHash(result, secret, seed []byte, hash func() hash.Hash) {
 	}
 }
 
-// pRF10 implements the TLS 1.0 pseudo-random function, as defined in RFC 2246, section 5.
-func pRF10(result, secret, label, seed []byte) {
+// 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
 
@@ -62,9 +64,18 @@ func pRF10(result, secret, label, seed []byte) {
 	}
 }
 
-// pRF30 implements the SSL 3.0 pseudo-random function, as defined in
+// prf12 implements the TLS 1.2 pseudo-random function, as defined in RFC 5246, section 5.
+func prf12(result, secret, label, seed []byte) {
+	labelAndSeed := make([]byte, len(label)+len(seed))
+	copy(labelAndSeed, label)
+	copy(labelAndSeed[len(label):], seed)
+
+	pHash(result, secret, labelAndSeed, sha256.New)
+}
+
+// prf30 implements the SSL 3.0 pseudo-random function, as defined in
 // www.mozilla.org/projects/security/pki/nss/ssl/draft302.txt section 6.
-func pRF30(result, secret, label, seed []byte) {
+func prf30(result, secret, label, seed []byte) {
 	hashSHA1 := sha1.New()
 	hashMD5 := md5.New()
 
@@ -106,19 +117,27 @@ var keyExpansionLabel = []byte("key expansion")
 var clientFinishedLabel = []byte("client finished")
 var serverFinishedLabel = []byte("server finished")
 
+func prfForVersion(version uint16) func(result, secret, label, seed []byte) {
+	switch version {
+	case VersionSSL30:
+		return prf30
+	case VersionTLS10, VersionTLS11:
+		return prf10
+	case VersionTLS12:
+		return prf12
+	default:
+		panic("unknown version")
+	}
+}
+
 // masterFromPreMasterSecret generates the master secret from the pre-master
 // secret. See http://tools.ietf.org/html/rfc5246#section-8.1
 func masterFromPreMasterSecret(version uint16, preMasterSecret, clientRandom, serverRandom []byte) []byte {
-	prf := pRF10
-	if version == VersionSSL30 {
-		prf = pRF30
-	}
-
 	var seed [tlsRandomLength * 2]byte
 	copy(seed[0:len(clientRandom)], clientRandom)
 	copy(seed[len(clientRandom):], serverRandom)
 	masterSecret := make([]byte, masterSecretLength)
-	prf(masterSecret, preMasterSecret, masterSecretLabel, seed[0:])
+	prfForVersion(version)(masterSecret, preMasterSecret, masterSecretLabel, seed[0:])
 	return masterSecret
 }
 
@@ -126,18 +145,13 @@ func masterFromPreMasterSecret(version uint16, preMasterSecret, clientRandom, se
 // secret, given the lengths of the MAC key, cipher key and IV, as defined in
 // RFC 2246, section 6.3.
 func keysFromMasterSecret(version uint16, masterSecret, clientRandom, serverRandom []byte, macLen, keyLen, ivLen int) (clientMAC, serverMAC, clientKey, serverKey, clientIV, serverIV []byte) {
-	prf := pRF10
-	if version == VersionSSL30 {
-		prf = pRF30
-	}
-
 	var seed [tlsRandomLength * 2]byte
 	copy(seed[0:len(clientRandom)], serverRandom)
 	copy(seed[len(serverRandom):], clientRandom)
 
 	n := 2*macLen + 2*keyLen + 2*ivLen
 	keyMaterial := make([]byte, n)
-	prf(keyMaterial, masterSecret, keyExpansionLabel, seed[0:])
+	prfForVersion(version)(keyMaterial, masterSecret, keyExpansionLabel, seed[0:])
 	clientMAC = keyMaterial[:macLen]
 	keyMaterial = keyMaterial[macLen:]
 	serverMAC = keyMaterial[:macLen]
@@ -153,37 +167,34 @@ func keysFromMasterSecret(version uint16, masterSecret, clientRandom, serverRand
 }
 
 func newFinishedHash(version uint16) finishedHash {
-	return finishedHash{md5.New(), sha1.New(), md5.New(), sha1.New(), version}
+	if version >= VersionTLS12 {
+		return finishedHash{sha256.New(), sha256.New(), nil, nil, version}
+	}
+	return finishedHash{sha1.New(), sha1.New(), md5.New(), md5.New(), version}
 }
 
 // A finishedHash calculates the hash of a set of handshake messages suitable
 // for including in a Finished message.
 type finishedHash struct {
-	clientMD5  hash.Hash
-	clientSHA1 hash.Hash
-	serverMD5  hash.Hash
-	serverSHA1 hash.Hash
-	version    uint16
+	client hash.Hash
+	server hash.Hash
+
+	// Prior to TLS 1.2, an additional MD5 hash is required.
+	clientMD5 hash.Hash
+	serverMD5 hash.Hash
+
+	version uint16
 }
 
 func (h finishedHash) Write(msg []byte) (n int, err error) {
-	h.clientMD5.Write(msg)
-	h.clientSHA1.Write(msg)
-	h.serverMD5.Write(msg)
-	h.serverSHA1.Write(msg)
-	return len(msg), nil
-}
+	h.client.Write(msg)
+	h.server.Write(msg)
 
-// finishedSum10 calculates the contents of the verify_data member of a TLSv1
-// Finished message given the MD5 and SHA1 hashes of a set of handshake
-// messages.
-func finishedSum10(md5, sha1, label, masterSecret []byte) []byte {
-	seed := make([]byte, len(md5)+len(sha1))
-	copy(seed, md5)
-	copy(seed[len(md5):], sha1)
-	out := make([]byte, finishedVerifyLength)
-	pRF10(out, masterSecret, label, seed)
-	return out
+	if h.version < VersionTLS12 {
+		h.clientMD5.Write(msg)
+		h.serverMD5.Write(msg)
+	}
+	return len(msg), nil
 }
 
 // finishedSum30 calculates the contents of the verify_data member of a SSLv3
@@ -225,22 +236,52 @@ var ssl3ServerFinishedMagic = [4]byte{0x53, 0x52, 0x56, 0x52}
 // Finished message.
 func (h finishedHash) clientSum(masterSecret []byte) []byte {
 	if h.version == VersionSSL30 {
-		return finishedSum30(h.clientMD5, h.clientSHA1, masterSecret, ssl3ClientFinishedMagic)
+		return finishedSum30(h.clientMD5, h.client, masterSecret, ssl3ClientFinishedMagic)
 	}
 
-	md5 := h.clientMD5.Sum(nil)
-	sha1 := h.clientSHA1.Sum(nil)
-	return finishedSum10(md5, sha1, clientFinishedLabel, masterSecret)
+	out := make([]byte, finishedVerifyLength)
+	if h.version >= VersionTLS12 {
+		seed := h.client.Sum(nil)
+		prf12(out, masterSecret, clientFinishedLabel, seed)
+	} else {
+		seed := make([]byte, 0, md5.Size+sha1.Size)
+		seed = h.clientMD5.Sum(seed)
+		seed = h.client.Sum(seed)
+		prf10(out, masterSecret, clientFinishedLabel, seed)
+	}
+	return out
 }
 
 // serverSum returns the contents of the verify_data member of a server's
 // Finished message.
 func (h finishedHash) serverSum(masterSecret []byte) []byte {
 	if h.version == VersionSSL30 {
-		return finishedSum30(h.serverMD5, h.serverSHA1, masterSecret, ssl3ServerFinishedMagic)
+		return finishedSum30(h.serverMD5, h.server, masterSecret, ssl3ServerFinishedMagic)
+	}
+
+	out := make([]byte, finishedVerifyLength)
+	if h.version >= VersionTLS12 {
+		seed := h.server.Sum(nil)
+		prf12(out, masterSecret, serverFinishedLabel, seed)
+	} else {
+		seed := make([]byte, 0, md5.Size+sha1.Size)
+		seed = h.serverMD5.Sum(seed)
+		seed = h.server.Sum(seed)
+		prf10(out, masterSecret, serverFinishedLabel, seed)
+	}
+	return out
+}
+
+// hashForClientCertificate returns a digest and hash function identifier
+// suitable for signing by a TLS client certificate.
+func (h finishedHash) hashForClientCertificate() ([]byte, crypto.Hash) {
+	if h.version >= VersionTLS12 {
+		digest := h.server.Sum(nil)
+		return digest, crypto.SHA256
 	}
 
-	md5 := h.serverMD5.Sum(nil)
-	sha1 := h.serverSHA1.Sum(nil)
-	return finishedSum10(md5, sha1, serverFinishedLabel, masterSecret)
+	digest := make([]byte, 0, 36)
+	digest = h.serverMD5.Sum(digest)
+	digest = h.server.Sum(digest)
+	return digest, crypto.MD5SHA1
 }