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crypto/tls: advertise support for RSA+SHA1 in TLS 1.2 handshake. 

Despite SHA256 support being required for TLS 1.2 handshakes, some
servers are aborting handshakes that don't offer SHA1 support.

This change adds support for signing TLS 1.2 ServerKeyExchange messages
with SHA1. It does not add support for signing TLS 1.2 client
certificates with SHA1 as that would require the handshake to be
buffered.

Fixes #6618.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/15650043
tls13
Adam Langley há 11 anos
ascendente
a13de249ee
cometimento
1a11255b00
6 ficheiros alterados com 218 adições e 157 eliminações
Visualização em 2 colunas
Opções das diferenças
Mostrar estatísticas Descarregar ficheiro patch Descarregar ficheiro diff
  1. +12
    -3
      common.go
  2. +1
    -1
      handshake_client.go
  3. +141
    -141
      handshake_client_test.go
  4. +1
    -1
      handshake_messages_test.go
  5. +1
    -1
      handshake_server.go
  6. +62
    -10
      key_agreement.go

+ 12
- 3
common.go Ver ficheiro

@@ -126,10 +126,19 @@ type signatureAndHash struct {
hash, signature uint8
}

// supportedSignatureAlgorithms contains the signature and hash algorithms that
// the code can advertise as supported both in a TLS 1.2 ClientHello and
// supportedSKXSignatureAlgorithms contains the signature and hash algorithms
// that the code advertises as supported in a TLS 1.2 ClientHello.
var supportedSKXSignatureAlgorithms = []signatureAndHash{
{hashSHA256, signatureRSA},
{hashSHA256, signatureECDSA},
{hashSHA1, signatureRSA},
{hashSHA1, signatureECDSA},
}

// supportedClientCertSignatureAlgorithms contains the signature and hash
// algorithms that the code advertises as supported in a TLS 1.2
// CertificateRequest.
var supportedSignatureAlgorithms = []signatureAndHash{
var supportedClientCertSignatureAlgorithms = []signatureAndHash{
{hashSHA256, signatureRSA},
{hashSHA256, signatureECDSA},
}


+ 1
- 1
handshake_client.go Ver ficheiro

@@ -63,7 +63,7 @@ NextCipherSuite:
}

if hello.vers >= VersionTLS12 {
hello.signatureAndHashes = supportedSignatureAlgorithms
hello.signatureAndHashes = supportedSKXSignatureAlgorithms
}

c.writeRecord(recordTypeHandshake, hello.marshal())


+ 141
- 141
handshake_client_test.go Ver ficheiro

@@ -1834,30 +1834,30 @@ var clientChainCertificateScript = [][]byte{
// -minversion=0x0303 -maxversion=0x0303
var clientTLS12Script = [][]byte{
{
0x16, 0x03, 0x01, 0x00, 0x54, 0x01, 0x00, 0x00,
0x50, 0x03, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00,
0x16, 0x03, 0x01, 0x00, 0x58, 0x01, 0x00, 0x00,
0x54, 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, 0x25, 0x00, 0x05, 0x00, 0x05,
0x01, 0x00, 0x00, 0x29, 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, 0x06, 0x00, 0x04, 0x04, 0x01, 0x04,
0x03,
0x0d, 0x00, 0x0a, 0x00, 0x08, 0x04, 0x01, 0x04,
0x03, 0x02, 0x01, 0x02, 0x03,
},
{
0x16, 0x03, 0x03, 0x00, 0x54, 0x02, 0x00, 0x00,
0x50, 0x03, 0x03, 0x51, 0xe5, 0x78, 0x4c, 0x64,
0x66, 0xd0, 0xee, 0x0b, 0x8b, 0xfd, 0x9b, 0xe0,
0x54, 0x3c, 0x6e, 0x05, 0x04, 0x2f, 0x77, 0x07,
0x8c, 0x04, 0xb9, 0xf6, 0xdd, 0xea, 0x1a, 0x7c,
0xdf, 0x65, 0x39, 0x20, 0xea, 0xa2, 0xef, 0x53,
0x96, 0xf5, 0x0b, 0x8a, 0x47, 0xa0, 0x7c, 0x20,
0x53, 0x75, 0xee, 0x87, 0xb9, 0xd3, 0xe2, 0xa6,
0x97, 0x64, 0xb9, 0xa6, 0xcc, 0xc0, 0xe5, 0xbf,
0x92, 0x1d, 0xee, 0x4d, 0xc0, 0x13, 0x00, 0x00,
0x50, 0x03, 0x03, 0x52, 0x65, 0x67, 0xbd, 0xe8,
0x72, 0x03, 0x6a, 0x52, 0x8d, 0x28, 0x2c, 0x9a,
0x53, 0xff, 0xc2, 0xa1, 0x62, 0x5f, 0x54, 0xfb,
0x73, 0x00, 0xcf, 0x4d, 0x28, 0x36, 0xc2, 0xee,
0xfd, 0x78, 0xf0, 0x20, 0x6f, 0xbe, 0x49, 0xec,
0x5b, 0x6f, 0xf9, 0x53, 0x42, 0x69, 0x0d, 0x6d,
0x8b, 0x68, 0x2e, 0xca, 0x3c, 0x3c, 0x88, 0x9e,
0x8b, 0xf9, 0x32, 0x65, 0x09, 0xd6, 0xa0, 0x7d,
0xea, 0xc6, 0xd5, 0xc4, 0xc0, 0x13, 0x00, 0x00,
0x08, 0x00, 0x0b, 0x00, 0x04, 0x03, 0x00, 0x01,
0x02, 0x16, 0x03, 0x03, 0x02, 0x39, 0x0b, 0x00,
0x02, 0x35, 0x00, 0x02, 0x32, 0x00, 0x02, 0x2f,
@@ -1932,24 +1932,24 @@ var clientTLS12Script = [][]byte{
0xbb, 0x77, 0xba, 0xe4, 0x12, 0xbb, 0xf4, 0xc8,
0x5e, 0x9c, 0x81, 0xa8, 0x97, 0x60, 0x4c, 0x16,
0x03, 0x03, 0x00, 0x8d, 0x0c, 0x00, 0x00, 0x89,
0x03, 0x00, 0x17, 0x41, 0x04, 0x39, 0xe9, 0x59,
0x24, 0x76, 0xf0, 0x1a, 0xd6, 0x21, 0xa5, 0xbc,
0x28, 0xb9, 0xd5, 0x3d, 0xf7, 0xf3, 0xbe, 0x09,
0xff, 0xc1, 0x79, 0x33, 0x82, 0xf8, 0xe1, 0x5f,
0x1c, 0x34, 0x96, 0x3a, 0x10, 0xf2, 0x2c, 0x69,
0xab, 0x57, 0xf6, 0x20, 0xb6, 0x59, 0x1f, 0x8c,
0x3e, 0xa2, 0xac, 0x4d, 0xf2, 0x10, 0x58, 0x0b,
0x61, 0x27, 0x6c, 0x47, 0xa0, 0x52, 0xc7, 0xe6,
0x36, 0xfd, 0xb1, 0xa2, 0x49, 0x04, 0x01, 0x00,
0x40, 0x99, 0x7e, 0xf9, 0xed, 0x8b, 0x62, 0x82,
0x00, 0xde, 0x5f, 0x2f, 0xb9, 0xf9, 0x9d, 0xa1,
0xb0, 0x14, 0x05, 0xc1, 0xdd, 0xa3, 0xb9, 0x08,
0xa5, 0x36, 0xb6, 0xfe, 0x8a, 0x5b, 0x2d, 0x6e,
0xd8, 0x5a, 0x5c, 0x89, 0x84, 0x85, 0x56, 0x01,
0xaf, 0x43, 0xd3, 0x0f, 0x85, 0xd0, 0xb2, 0x35,
0x3d, 0x1d, 0xd6, 0x67, 0x52, 0x48, 0xe8, 0x82,
0x47, 0xbb, 0x2a, 0x54, 0x4a, 0x55, 0xcd, 0x10,
0x54, 0x16, 0x03, 0x03, 0x00, 0x04, 0x0e, 0x00,
0x03, 0x00, 0x17, 0x41, 0x04, 0x48, 0x93, 0x62,
0x6a, 0xf8, 0x7c, 0x94, 0xcc, 0xcc, 0x0a, 0x9b,
0x5e, 0x11, 0xad, 0x0b, 0x30, 0xc4, 0x5d, 0xf7,
0x63, 0x24, 0xc1, 0xb0, 0x40, 0x5f, 0xff, 0x9f,
0x0d, 0x7e, 0xd5, 0xa5, 0xd0, 0x4f, 0x80, 0x16,
0xa8, 0x66, 0x18, 0x31, 0x1f, 0x81, 0xb2, 0x9a,
0x41, 0x62, 0x5b, 0xcf, 0x73, 0xac, 0x4a, 0x64,
0xb5, 0xc1, 0x46, 0x4d, 0x8a, 0xac, 0x25, 0xba,
0x81, 0x7f, 0xbe, 0x64, 0x68, 0x04, 0x01, 0x00,
0x40, 0x4e, 0x3f, 0x1e, 0x04, 0x4c, 0xef, 0xd2,
0xa6, 0x82, 0xe6, 0x7c, 0x76, 0x23, 0x17, 0xb9,
0xe7, 0x52, 0x15, 0x6b, 0x3d, 0xb2, 0xb1, 0x17,
0x7d, 0xe6, 0xde, 0x06, 0x87, 0x30, 0xb0, 0xb5,
0x57, 0xae, 0xdf, 0xb2, 0xdc, 0x8d, 0xab, 0x76,
0x9c, 0xaa, 0x45, 0x6d, 0x23, 0x5d, 0xc1, 0xa8,
0x7b, 0x79, 0x79, 0xb1, 0x3c, 0xdc, 0xf5, 0x33,
0x2c, 0xa1, 0x62, 0x3e, 0xbd, 0xf5, 0x5d, 0x6c,
0x87, 0x16, 0x03, 0x03, 0x00, 0x04, 0x0e, 0x00,
0x00, 0x00,
},
{
@@ -1965,74 +1965,74 @@ var clientTLS12Script = [][]byte{
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, 0x4e, 0xcb,
0x97, 0x41, 0x63, 0x39, 0xeb, 0xda, 0x04, 0x39,
0xfb, 0x67, 0x1d, 0x6d, 0xf8, 0x58, 0xd1, 0x22,
0x35, 0xe3, 0xc3, 0x9d, 0xfc, 0x4e, 0xcc, 0x71,
0x93, 0x78, 0x64, 0x39, 0x04, 0xa0, 0xa9, 0x41,
0xcf, 0x4c, 0xd6, 0x34, 0xad, 0x5c, 0xc9, 0x7a,
0x44, 0xb1, 0x1d, 0x77, 0x52, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xee, 0x17,
0x54, 0x51, 0xb6, 0x1d, 0x8e, 0xe4, 0x6b, 0xed,
0x5b, 0xa1, 0x27, 0x7f, 0xdc, 0xa9, 0xa5, 0xcf,
0x38, 0xe6, 0x5d, 0x17, 0x34, 0xf9, 0xc0, 0x07,
0xb8, 0xbe, 0x56, 0xe6, 0xd6, 0x6a, 0xb6, 0x26,
0x4e, 0x45, 0x8d, 0x48, 0xe9, 0xc6, 0xb1, 0xa1,
0xea, 0xdc, 0xb1, 0x37, 0xd9, 0xf6,
},
{
0x14, 0x03, 0x03, 0x00, 0x01, 0x01, 0x16, 0x03,
0x03, 0x00, 0x40, 0x55, 0x75, 0x8a, 0x57, 0xb4,
0x53, 0xa2, 0x8f, 0xbf, 0xd3, 0x79, 0x72, 0x1e,
0x94, 0x53, 0xb3, 0x03, 0x9d, 0x4d, 0x8a, 0x1f,
0xbd, 0x25, 0x79, 0x69, 0x61, 0x65, 0xd7, 0x26,
0xad, 0xa6, 0x0e, 0x89, 0x83, 0xc0, 0xbe, 0x46,
0x51, 0xe4, 0x38, 0x7b, 0x65, 0x74, 0x6d, 0x24,
0xff, 0xd4, 0x9f, 0xcb, 0xfc, 0xd7, 0x03, 0xaa,
0x7b, 0x8e, 0x30, 0x09, 0xdb, 0xaa, 0x9d, 0xad,
0xcd, 0x56, 0xcf,
0x03, 0x00, 0x40, 0x00, 0x68, 0xc5, 0x27, 0xd5,
0x3d, 0xba, 0x04, 0xde, 0x63, 0xf1, 0x5b, 0xc3,
0x86, 0xb9, 0x82, 0xc7, 0xb3, 0x90, 0x31, 0xea,
0x15, 0xe1, 0x42, 0x76, 0x7d, 0x90, 0xcb, 0xc9,
0xd1, 0x05, 0xe6, 0x8c, 0x76, 0xc7, 0x9a, 0x35,
0x67, 0xa2, 0x70, 0x9a, 0x8a, 0x6c, 0xb5, 0x6b,
0xc7, 0x87, 0xf3, 0x65, 0x0a, 0xa0, 0x98, 0xba,
0x57, 0xbb, 0x31, 0x7b, 0x1f, 0x1a, 0xf7, 0x2a,
0xf3, 0x12, 0xf6,
},
{
0x17, 0x03, 0x03, 0x00, 0x30, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0xab, 0x01, 0x46,
0xa8, 0xdd, 0x62, 0x73, 0x67, 0x99, 0x01, 0x42,
0xb2, 0x9e, 0x22, 0x18, 0xf5, 0x8f, 0x10, 0x97,
0xde, 0x58, 0x24, 0x34, 0x36, 0xa2, 0x5d, 0xf4,
0x96, 0x2a, 0xed, 0x6c, 0x06, 0x15, 0x03, 0x03,
0x00, 0x00, 0x00, 0x00, 0x00, 0x14, 0x10, 0x80,
0x54, 0x1e, 0x72, 0xd3, 0x1a, 0x86, 0x1c, 0xc4,
0x4a, 0x9b, 0xd4, 0x80, 0xd2, 0x03, 0x35, 0x0d,
0xe4, 0x12, 0xc2, 0x3d, 0x79, 0x4a, 0x2c, 0xba,
0xc2, 0xad, 0xf3, 0xd2, 0x16, 0x15, 0x03, 0x03,
0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x9f, 0x7a, 0x9f, 0xab, 0xf5, 0x4e,
0x1c, 0x4e, 0xf4, 0xcb, 0x1a, 0x39, 0xae, 0x21,
0x85, 0x39, 0xc4, 0x51, 0xac, 0x14, 0xde, 0xa0,
0xe7, 0x70, 0x7c, 0x6a, 0x53, 0x54, 0x19, 0xbc,
0x2f, 0x32,
0x00, 0x00, 0x04, 0x9b, 0x68, 0x78, 0x92, 0x28,
0x62, 0x02, 0x65, 0x87, 0x90, 0xe4, 0x32, 0xd7,
0x72, 0x08, 0x70, 0xb8, 0x52, 0x32, 0x1f, 0x97,
0xd4, 0x6a, 0xc6, 0x28, 0x83, 0xb0, 0x1d, 0x6e,
0x16, 0xd5,
},
}

// $ openssl s_server -tls1_2 -cert server.crt -key server.key \
// -port 10443
// -port 10443 -verify 0
// $ go test -test.run "TestRunClient" -connect -ciphersuites=0xc02f \
// -maxversion=0x0303
var clientTLS12ClientCertScript = [][]byte{
{
0x16, 0x03, 0x01, 0x00, 0x54, 0x01, 0x00, 0x00,
0x50, 0x03, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00,
0x16, 0x03, 0x01, 0x00, 0x58, 0x01, 0x00, 0x00,
0x54, 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, 0x2f,
0x01, 0x00, 0x00, 0x25, 0x00, 0x05, 0x00, 0x05,
0x01, 0x00, 0x00, 0x29, 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, 0x06, 0x00, 0x04, 0x04, 0x01, 0x04,
0x03,
0x0d, 0x00, 0x0a, 0x00, 0x08, 0x04, 0x01, 0x04,
0x03, 0x02, 0x01, 0x02, 0x03,
},
{
0x16, 0x03, 0x03, 0x00, 0x54, 0x02, 0x00, 0x00,
0x50, 0x03, 0x03, 0x52, 0x37, 0x21, 0x96, 0x1c,
0x0a, 0x59, 0xc7, 0x16, 0x6d, 0x44, 0x76, 0xda,
0x3f, 0x36, 0x12, 0x0c, 0x9d, 0xe1, 0xf7, 0xeb,
0x45, 0x53, 0x89, 0xd6, 0x88, 0xc0, 0xe9, 0xce,
0x8b, 0x40, 0xf5, 0x20, 0x13, 0x61, 0xd9, 0x3b,
0x29, 0x74, 0x3c, 0x4b, 0x9c, 0x7b, 0x3d, 0xfa,
0x7a, 0x8e, 0x5b, 0xf2, 0x27, 0x62, 0xc5, 0xdf,
0xe4, 0x61, 0x7d, 0xe3, 0x8f, 0x03, 0x0c, 0x2b,
0x38, 0x6c, 0xfe, 0x31, 0xc0, 0x2f, 0x00, 0x00,
0x50, 0x03, 0x03, 0x52, 0x65, 0x67, 0xe0, 0xe8,
0xf1, 0x13, 0x2a, 0x83, 0x28, 0xa8, 0x2e, 0x76,
0x69, 0xe6, 0x89, 0x55, 0x6c, 0x48, 0x49, 0x2e,
0x00, 0xf6, 0x87, 0x6c, 0x13, 0xa1, 0xd4, 0xaa,
0xd0, 0x76, 0x3b, 0x20, 0xe4, 0xd6, 0x5b, 0x1d,
0x11, 0xf2, 0x42, 0xf2, 0x82, 0x0c, 0x0d, 0x66,
0x6d, 0xec, 0x52, 0xf8, 0x4a, 0xd9, 0x45, 0xcf,
0xe4, 0x4a, 0xba, 0x8b, 0xf1, 0xab, 0x55, 0xe4,
0x57, 0x18, 0xa9, 0x36, 0xc0, 0x2f, 0x00, 0x00,
0x08, 0x00, 0x0b, 0x00, 0x04, 0x03, 0x00, 0x01,
0x02, 0x16, 0x03, 0x03, 0x02, 0x39, 0x0b, 0x00,
0x02, 0x35, 0x00, 0x02, 0x32, 0x00, 0x02, 0x2f,
@@ -2107,24 +2107,24 @@ var clientTLS12ClientCertScript = [][]byte{
0xbb, 0x77, 0xba, 0xe4, 0x12, 0xbb, 0xf4, 0xc8,
0x5e, 0x9c, 0x81, 0xa8, 0x97, 0x60, 0x4c, 0x16,
0x03, 0x03, 0x00, 0x8d, 0x0c, 0x00, 0x00, 0x89,
0x03, 0x00, 0x17, 0x41, 0x04, 0xdf, 0xc4, 0x75,
0x20, 0x7f, 0xc1, 0x8f, 0x92, 0x2d, 0xab, 0x2d,
0x65, 0x19, 0x40, 0xf6, 0x26, 0x19, 0x90, 0x84,
0x40, 0x55, 0xd3, 0x50, 0xe5, 0x63, 0x9e, 0x4b,
0x7a, 0x95, 0xdc, 0xb7, 0x2b, 0xa7, 0xa3, 0x5a,
0x5e, 0x01, 0xa0, 0x3e, 0xc2, 0x3c, 0x5d, 0xf6,
0x9a, 0xc8, 0xbe, 0x22, 0x23, 0x38, 0x31, 0x7c,
0x51, 0x83, 0x5d, 0x4f, 0xfb, 0x08, 0x66, 0x5f,
0xfe, 0xf5, 0x97, 0x9a, 0x93, 0x04, 0x01, 0x00,
0x40, 0x81, 0x52, 0x86, 0xe6, 0x20, 0x49, 0x65,
0x1b, 0x27, 0x46, 0x88, 0xd8, 0x0c, 0x44, 0x47,
0xae, 0xbd, 0xc6, 0xe4, 0x4a, 0x2c, 0x10, 0xf4,
0x3a, 0xd5, 0xbe, 0x5c, 0xfb, 0x5a, 0xe9, 0x85,
0x57, 0xda, 0xf9, 0xb1, 0x8e, 0xce, 0x01, 0x43,
0x84, 0x91, 0x68, 0x58, 0xa0, 0xbf, 0xd0, 0x24,
0xaa, 0x86, 0xfa, 0x19, 0x59, 0x06, 0x16, 0xe8,
0x82, 0x99, 0x90, 0x60, 0x02, 0x82, 0xaf, 0x7e,
0x0e, 0x16, 0x03, 0x03, 0x00, 0x30, 0x0d, 0x00,
0x03, 0x00, 0x17, 0x41, 0x04, 0xaa, 0xf0, 0x0c,
0xa3, 0x60, 0xcf, 0x69, 0x1e, 0xad, 0x16, 0x9a,
0x01, 0x40, 0xc6, 0x22, 0xc4, 0xbb, 0x06, 0x3b,
0x84, 0x65, 0xea, 0xc7, 0xa2, 0x96, 0x79, 0x17,
0x2f, 0xc7, 0xbe, 0x56, 0x39, 0xe4, 0x79, 0xf3,
0xad, 0x17, 0xf3, 0x7e, 0xe2, 0x7b, 0xa2, 0x6f,
0x3f, 0x96, 0xea, 0xe5, 0x0e, 0xea, 0x39, 0x79,
0x77, 0xeb, 0x14, 0x18, 0xbb, 0x7c, 0x95, 0xda,
0xa7, 0x51, 0x09, 0xba, 0xd7, 0x04, 0x01, 0x00,
0x40, 0x82, 0x3e, 0xce, 0xee, 0x7e, 0xba, 0x3b,
0x51, 0xb1, 0xba, 0x71, 0x2e, 0x54, 0xa9, 0xb9,
0xe2, 0xb1, 0x59, 0x17, 0xa1, 0xac, 0x76, 0xb4,
0x4e, 0xf1, 0xae, 0x65, 0x17, 0x2b, 0x43, 0x06,
0x31, 0x29, 0x0b, 0xa0, 0x1e, 0xb6, 0xfa, 0x35,
0xe8, 0x63, 0x06, 0xde, 0x13, 0x89, 0x83, 0x69,
0x3b, 0xc2, 0x15, 0x73, 0x1c, 0xc5, 0x07, 0xe9,
0x38, 0x9b, 0x06, 0x81, 0x1b, 0x97, 0x7c, 0xa6,
0x89, 0x16, 0x03, 0x03, 0x00, 0x30, 0x0d, 0x00,
0x00, 0x28, 0x03, 0x01, 0x02, 0x40, 0x00, 0x20,
0x06, 0x01, 0x06, 0x02, 0x06, 0x03, 0x05, 0x01,
0x05, 0x02, 0x05, 0x03, 0x04, 0x01, 0x04, 0x02,
@@ -2496,65 +2496,65 @@ var clientTLS12ClientCertScript = [][]byte{
0xa6, 0xb5, 0x68, 0x1a, 0x41, 0x03, 0x56, 0x6b,
0xdc, 0x5a, 0x89, 0x16, 0x03, 0x03, 0x01, 0x08,
0x0f, 0x00, 0x01, 0x04, 0x04, 0x01, 0x01, 0x00,
0x78, 0x13, 0xba, 0x6a, 0xc6, 0xec, 0xd8, 0x03,
0x7f, 0x66, 0x83, 0xbd, 0xa6, 0xd0, 0x60, 0x05,
0x20, 0xf7, 0x2b, 0xa3, 0xe3, 0x8c, 0xbf, 0xab,
0x40, 0x95, 0x47, 0x31, 0xd0, 0xb6, 0x9e, 0x3c,
0x82, 0xf1, 0xd9, 0x25, 0x89, 0x6b, 0x12, 0xf4,
0xb4, 0xf4, 0x50, 0x44, 0xad, 0xa1, 0x96, 0x5a,
0x2e, 0x2a, 0x75, 0xb5, 0x61, 0x71, 0x08, 0xa0,
0x73, 0xc0, 0xdf, 0xa6, 0xd6, 0x34, 0x0f, 0xc8,
0x3d, 0x8e, 0x67, 0x73, 0x15, 0x7d, 0x6e, 0xe7,
0xe8, 0xf9, 0x79, 0xd2, 0x26, 0x28, 0xef, 0x94,
0x06, 0x68, 0xf4, 0x41, 0xc9, 0x06, 0x3c, 0x38,
0x27, 0xb9, 0xbe, 0xf3, 0x03, 0x9f, 0x3f, 0x17,
0xa9, 0xf8, 0x3f, 0x2b, 0x98, 0x09, 0x69, 0xd2,
0x98, 0x71, 0xa8, 0xec, 0xe6, 0xdc, 0xf3, 0x38,
0xbc, 0x2f, 0x4a, 0x91, 0xe5, 0x4e, 0x1d, 0x83,
0x49, 0xb4, 0xdb, 0x1c, 0x88, 0x6f, 0x0c, 0x5d,
0xbd, 0xf4, 0x9a, 0xd3, 0xd1, 0x32, 0xd0, 0xa6,
0xf1, 0xe9, 0xb8, 0xf6, 0xfe, 0x3c, 0x09, 0x67,
0x40, 0xb5, 0x13, 0xe6, 0xd4, 0x82, 0xda, 0x67,
0x27, 0x31, 0xc6, 0xac, 0xc8, 0xf4, 0x17, 0x99,
0x2c, 0x1d, 0xf1, 0x6f, 0x1d, 0x25, 0x5f, 0x83,
0x60, 0xa9, 0xaf, 0xf1, 0x24, 0x85, 0xd8, 0x01,
0x2f, 0x61, 0x21, 0x64, 0xeb, 0xa3, 0x43, 0xb7,
0x8f, 0x55, 0x1e, 0xb6, 0xda, 0x47, 0x30, 0xb2,
0x30, 0x40, 0xd9, 0x35, 0xb7, 0x6f, 0x5e, 0x7b,
0x6f, 0x00, 0x5a, 0x08, 0xa9, 0x67, 0xa4, 0xe5,
0xe7, 0xe9, 0xe1, 0xa7, 0x5b, 0x9e, 0xbd, 0xdb,
0xd1, 0x2a, 0x48, 0xb2, 0x4f, 0xf6, 0xd5, 0xe4,
0x44, 0x4a, 0xb8, 0xd3, 0x68, 0x25, 0xf9, 0xe9,
0xb2, 0xf5, 0xcc, 0xcd, 0x81, 0xe0, 0x01, 0x0e,
0xb6, 0x1a, 0xe4, 0x23, 0xe9, 0xee, 0xb1, 0x7b,
0xca, 0xa8, 0xaa, 0x45, 0xf4, 0x14, 0xeb, 0x2d,
0x7e, 0xe4, 0x65, 0x02, 0x8e, 0xb3, 0x34, 0x6a,
0x47, 0x71, 0xd1, 0xb0, 0x8d, 0x3c, 0x0c, 0xe1,
0xde, 0x7e, 0x5f, 0xb4, 0x15, 0x2d, 0x32, 0x0a,
0x2a, 0xdb, 0x9b, 0x40, 0xba, 0xce, 0x8b, 0xf5,
0x74, 0xc1, 0x68, 0x20, 0x7c, 0x87, 0x23, 0x13,
0xc3, 0x13, 0xa7, 0xdb, 0xec, 0x59, 0xa0, 0x40,
0x9e, 0x64, 0x03, 0x60, 0xac, 0x76, 0xff, 0x01,
0x34, 0x7b, 0x32, 0x26, 0xd9, 0x41, 0x31, 0x93,
0xaa, 0x30, 0x51, 0x83, 0x85, 0x40, 0xeb, 0x4e,
0x66, 0x39, 0x83, 0xb1, 0x30, 0x0d, 0x96, 0x01,
0xee, 0x81, 0x53, 0x5e, 0xec, 0xa9, 0xc9, 0xdf,
0x7e, 0xc1, 0x09, 0x47, 0x8b, 0x35, 0xdb, 0x10,
0x15, 0xd4, 0xc7, 0x5a, 0x39, 0xe3, 0xc0, 0xf3,
0x93, 0x38, 0x11, 0xdc, 0x71, 0xbb, 0xc7, 0x62,
0x2b, 0x85, 0xad, 0x6b, 0x4f, 0x09, 0xb3, 0x31,
0xa8, 0xe5, 0xd1, 0xb3, 0xa9, 0x21, 0x37, 0x50,
0xc8, 0x7d, 0xc3, 0xd2, 0xf7, 0x00, 0xd3, 0xdb,
0x0f, 0x82, 0xf2, 0x43, 0xcf, 0x36, 0x6c, 0x98,
0x63, 0xd8, 0x1d, 0xb3, 0xf3, 0xde, 0x63, 0x79,
0x64, 0xf0, 0xdb, 0x46, 0x04, 0xe1, 0x1c, 0x57,
0x0f, 0x9e, 0x96, 0xb9, 0x93, 0x45, 0x71, 0x1c,
0x8b, 0x65, 0x7d, 0x1e, 0xad, 0xbd, 0x03, 0x51,
0xae, 0x44, 0xef, 0x97, 0x45, 0x0d, 0x8d, 0x41,
0x5c, 0x80, 0x7b, 0xe6, 0xe0, 0xbc, 0xa6, 0x72,
0x95, 0xa0, 0x97, 0xe1, 0xbb, 0xc0, 0xcc, 0xe5,
0x1e, 0xc3, 0xbe, 0xd7, 0x42, 0x2a, 0xf3, 0x75,
0x8a, 0x44, 0x67, 0x3c, 0xe5, 0x68, 0x78, 0xe5,
0x40, 0x1f, 0xf0, 0x89, 0x57, 0xda, 0xee, 0x45,
0xf4, 0x44, 0x81, 0x01, 0x77, 0xf0, 0x4a, 0x14,
0xb1, 0x3f, 0x60, 0x2b, 0xeb, 0x42, 0x38, 0xa6,
0xfb, 0xe5, 0x4d, 0x71, 0xdc, 0x7d, 0x0a, 0x72,
0x56, 0x28, 0x9d, 0xa6, 0x8e, 0x74, 0x2d, 0xbd,
0x14, 0x03, 0x03, 0x00, 0x01, 0x01, 0x16, 0x03,
0x03, 0x00, 0x28, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x56, 0x37, 0x62, 0x42, 0xb3,
0xdc, 0xa4, 0x01, 0x64, 0x7f, 0xa7, 0xcf, 0xb1,
0xa4, 0x03, 0x4c, 0xf2, 0x4c, 0xe1, 0xee, 0xd6,
0x29, 0x45, 0x71, 0x67, 0xeb, 0x3f, 0x82, 0x77,
0x65, 0x0c, 0x13,
0x00, 0x00, 0x00, 0x31, 0x4d, 0x58, 0x94, 0x0b,
0x0b, 0x06, 0x5f, 0xae, 0x57, 0x17, 0x98, 0x86,
0xaa, 0x49, 0x17, 0x7f, 0xbd, 0x41, 0x05, 0xa5,
0x74, 0x1c, 0x58, 0xc8, 0x38, 0x2d, 0x99, 0x5d,
0xe5, 0x12, 0x43,
},
{
0x14, 0x03, 0x03, 0x00, 0x01, 0x01, 0x16, 0x03,
0x03, 0x00, 0x28, 0xd3, 0x6b, 0x15, 0x0f, 0x23,
0xd3, 0x5b, 0x93, 0x1d, 0x39, 0x6a, 0x74, 0xd9,
0x78, 0x39, 0xf6, 0x76, 0x6d, 0x5d, 0x21, 0x98,
0x7e, 0x10, 0xa4, 0x12, 0x11, 0x55, 0x25, 0xf7,
0x6f, 0x12, 0xf1, 0x9b, 0x9f, 0xe1, 0xc0, 0xe6,
0xbd, 0x93, 0xde,
0x03, 0x00, 0x28, 0xf2, 0x60, 0xc2, 0x75, 0x27,
0x64, 0xf4, 0x05, 0x98, 0xc9, 0xd3, 0xa8, 0x00,
0x4c, 0xa0, 0x49, 0x82, 0x68, 0xf1, 0x21, 0x05,
0x7b, 0x4b, 0x25, 0x3e, 0xe1, 0x5f, 0x0f, 0x84,
0x26, 0x2d, 0x16, 0x2e, 0xc0, 0xfd, 0xdf, 0x0a,
0xf4, 0xba, 0x19,
},
{
0x17, 0x03, 0x03, 0x00, 0x1e, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x01, 0xc8, 0x95, 0x86,
0xc0, 0xd0, 0xc2, 0x24, 0x1d, 0xf4, 0x20, 0xca,
0x2b, 0x30, 0x08, 0xf1, 0xb7, 0xe3, 0x5d, 0xcf,
0x86, 0xc3, 0xc5, 0x15, 0x03, 0x03, 0x00, 0x1a,
0x00, 0x00, 0x00, 0x00, 0x01, 0x35, 0xef, 0x9d,
0x6a, 0x86, 0x98, 0xc5, 0xca, 0x55, 0xca, 0x89,
0x29, 0xb4, 0x55, 0xd4, 0x41, 0x08, 0x96, 0xe0,
0xf3, 0x39, 0xfc, 0x15, 0x03, 0x03, 0x00, 0x1a,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02,
0x20, 0x13, 0xac, 0xc4, 0x6a, 0x48, 0x36, 0x04,
0xdb, 0xae, 0x52, 0xc5, 0xc1, 0x6f, 0x4c, 0xc4,
0x0a, 0x77,
0x02, 0x63, 0x1b, 0xaa, 0xc6, 0xc9, 0x6d, 0x72,
0x24, 0x10, 0x55, 0xa9, 0x8c, 0x3b, 0x23, 0xce,
0xd8, 0x4a,
},
}



+ 1
- 1
handshake_messages_test.go Ver ficheiro

@@ -136,7 +136,7 @@ func (*clientHelloMsg) Generate(rand *rand.Rand, size int) reflect.Value {
}
}
if rand.Intn(10) > 5 {
m.signatureAndHashes = supportedSignatureAlgorithms
m.signatureAndHashes = supportedSKXSignatureAlgorithms
}

return reflect.ValueOf(m)


+ 1
- 1
handshake_server.go Ver ficheiro

@@ -318,7 +318,7 @@ func (hs *serverHandshakeState) doFullHandshake() error {
}
if c.vers >= VersionTLS12 {
certReq.hasSignatureAndHash = true
certReq.signatureAndHashes = supportedSignatureAlgorithms
certReq.signatureAndHashes = supportedClientCertSignatureAlgorithms
}

// An empty list of certificateAuthorities signals to


+ 62
- 10
key_agreement.go Ver ficheiro

@@ -117,15 +117,47 @@ func sha256Hash(slices [][]byte) []byte {
}

// hashForServerKeyExchange hashes the given slices and returns their digest
// and the identifier of the hash function used.
func hashForServerKeyExchange(sigType uint8, version uint16, slices ...[]byte) ([]byte, crypto.Hash) {
// and the identifier of the hash function used. The hashFunc argument is only
// used for >= TLS 1.2 and precisely identifies the hash function to use.
func hashForServerKeyExchange(sigType, hashFunc uint8, version uint16, slices ...[]byte) ([]byte, crypto.Hash, error) {
if version >= VersionTLS12 {
return sha256Hash(slices), crypto.SHA256
switch hashFunc {
case hashSHA256:
return sha256Hash(slices), crypto.SHA256, nil
case hashSHA1:
return sha1Hash(slices), crypto.SHA1, nil
default:
return nil, crypto.Hash(0), errors.New("tls: unknown hash function used by peer")
}
}
if sigType == signatureECDSA {
return sha1Hash(slices), crypto.SHA1
return sha1Hash(slices), crypto.SHA1, nil
}
return md5SHA1Hash(slices), crypto.MD5SHA1
return md5SHA1Hash(slices), crypto.MD5SHA1, nil
}

// pickTLS12HashForSignature returns a TLS 1.2 hash identifier for signing a
// ServerKeyExchange given the signature type being used and the client's
// advertized list of supported signature and hash combinations.
func pickTLS12HashForSignature(sigType uint8, clientSignatureAndHashes []signatureAndHash) (uint8, error) {
if len(clientSignatureAndHashes) == 0 {
// If the client didn't specify any signature_algorithms
// extension then we can assume that it supports SHA1. See
// http://tools.ietf.org/html/rfc5246#section-7.4.1.4.1
return hashSHA1, nil
}

for _, sigAndHash := range clientSignatureAndHashes {
if sigAndHash.signature != sigType {
continue
}
switch sigAndHash.hash {
case hashSHA1, hashSHA256:
return sigAndHash.hash, nil
}
}

return 0, errors.New("tls: client doesn't support any common hash functions")
}

// ecdheRSAKeyAgreement implements a TLS key agreement where the server
@@ -181,7 +213,17 @@ Curve:
serverECDHParams[3] = byte(len(ecdhePublic))
copy(serverECDHParams[4:], ecdhePublic)

digest, hashFunc := hashForServerKeyExchange(ka.sigType, ka.version, clientHello.random, hello.random, serverECDHParams)
var tls12HashId uint8
if ka.version >= VersionTLS12 {
if tls12HashId, err = pickTLS12HashForSignature(ka.sigType, clientHello.signatureAndHashes); err != nil {
return nil, err
}
}

digest, hashFunc, err := hashForServerKeyExchange(ka.sigType, tls12HashId, ka.version, clientHello.random, hello.random, serverECDHParams)
if err != nil {
return nil, err
}
var sig []byte
switch ka.sigType {
case signatureECDSA:
@@ -216,7 +258,7 @@ Curve:
copy(skx.key, serverECDHParams)
k := skx.key[len(serverECDHParams):]
if ka.version >= VersionTLS12 {
k[0] = hashSHA256
k[0] = tls12HashId
k[1] = ka.sigType
k = k[2:]
}
@@ -279,9 +321,16 @@ func (ka *ecdheKeyAgreement) processServerKeyExchange(config *Config, clientHell
if len(sig) < 2 {
return errServerKeyExchange
}

var tls12HashId uint8
if ka.version >= VersionTLS12 {
// ignore SignatureAndHashAlgorithm
sig = sig[2:]
// handle SignatureAndHashAlgorithm
var sigAndHash []uint8
sigAndHash, sig = sig[:2], sig[2:]
if sigAndHash[1] != ka.sigType {
return errServerKeyExchange
}
tls12HashId = sigAndHash[0]
if len(sig) < 2 {
return errServerKeyExchange
}
@@ -292,7 +341,10 @@ func (ka *ecdheKeyAgreement) processServerKeyExchange(config *Config, clientHell
}
sig = sig[2:]

digest, hashFunc := hashForServerKeyExchange(ka.sigType, ka.version, clientHello.random, serverHello.random, serverECDHParams)
digest, hashFunc, err := hashForServerKeyExchange(ka.sigType, tls12HashId, ka.version, clientHello.random, serverHello.random, serverECDHParams)
if err != nil {
return err
}
switch ka.sigType {
case signatureECDSA:
pubKey, ok := cert.PublicKey.(*ecdsa.PublicKey)


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