diff options
Diffstat (limited to 'libgo/go/crypto/tls/prf.go')
| -rw-r--r-- | libgo/go/crypto/tls/prf.go | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/libgo/go/crypto/tls/prf.go b/libgo/go/crypto/tls/prf.go index 637ef03e2d7..df1eaad0586 100644 --- a/libgo/go/crypto/tls/prf.go +++ b/libgo/go/crypto/tls/prf.go @@ -106,10 +106,9 @@ var keyExpansionLabel = []byte("key expansion") var clientFinishedLabel = []byte("client finished") var serverFinishedLabel = []byte("server finished") -// keysFromPreMasterSecret generates the connection keys from the pre master -// secret, given the lengths of the MAC key, cipher key and IV, as defined in -// RFC 2246, section 6.3. -func keysFromPreMasterSecret(version uint16, preMasterSecret, clientRandom, serverRandom []byte, macLen, keyLen, ivLen int) (masterSecret, clientMAC, serverMAC, clientKey, serverKey, clientIV, serverIV []byte) { +// 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 @@ -118,9 +117,21 @@ func keysFromPreMasterSecret(version uint16, preMasterSecret, clientRandom, serv var seed [tlsRandomLength * 2]byte copy(seed[0:len(clientRandom)], clientRandom) copy(seed[len(clientRandom):], serverRandom) - masterSecret = make([]byte, masterSecretLength) + masterSecret := make([]byte, masterSecretLength) prf(masterSecret, preMasterSecret, masterSecretLabel, seed[0:]) + 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, 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) |