diff options
Diffstat (limited to 'libgo/go/crypto/tls/prf.go')
| -rw-r--r-- | libgo/go/crypto/tls/prf.go | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/libgo/go/crypto/tls/prf.go b/libgo/go/crypto/tls/prf.go index 6127c1ccfe7..747b817ba32 100644 --- a/libgo/go/crypto/tls/prf.go +++ b/libgo/go/crypto/tls/prf.go @@ -145,11 +145,12 @@ func prfForVersion(version uint16, suite *cipherSuite) func(result, secret, labe // masterFromPreMasterSecret generates the master secret from the pre-master // secret. See http://tools.ietf.org/html/rfc5246#section-8.1 func masterFromPreMasterSecret(version uint16, suite *cipherSuite, preMasterSecret, clientRandom, serverRandom []byte) []byte { - var seed [tlsRandomLength * 2]byte - copy(seed[0:len(clientRandom)], clientRandom) - copy(seed[len(clientRandom):], serverRandom) + 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[0:]) + prfForVersion(version, suite)(masterSecret, preMasterSecret, masterSecretLabel, seed) return masterSecret } @@ -157,13 +158,13 @@ func masterFromPreMasterSecret(version uint16, suite *cipherSuite, preMasterSecr // 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) { - var seed [tlsRandomLength * 2]byte - copy(seed[0:len(clientRandom)], serverRandom) - copy(seed[len(serverRandom):], clientRandom) + 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[0:]) + prfForVersion(version, suite)(keyMaterial, masterSecret, keyExpansionLabel, seed) clientMAC = keyMaterial[:macLen] keyMaterial = keyMaterial[macLen:] serverMAC = keyMaterial[:macLen] |