public CipherSuite(ProtocolVersion version)
{
ProtocolVersion = version;
CipherSuiteID = 0x0000;
CipherSuiteName = "TLS_NULL_WITH_NULL_NULL";
_keyExchangeAlgorithm = new KeyExchangeAlgorithmNull();
_signatureAlgorithm = new SignatureAlgorithmNull();
_pseudoRandomFunction = null;
_bulkCipherAlgorithm = new BulkCipherAlgorithmNull();
_macAlgorithm = new MACAlgorithmNull();
}
public CipherSuite(ProtocolVersion version)
{
ProtocolVersion = version;
CipherSuiteID = 0x0000;
CipherSuiteName = "TLS_NULL_WITH_NULL_NULL";
_keyExchangeAlgorithm = new KeyExchangeAlgorithmNull();
_signatureAlgorithm = new SignatureAlgorithmNull();
_pseudoRandomFunction = null;
_bulkCipherAlgorithm = new BulkCipherAlgorithmNull();
_macAlgorithm = new MACAlgorithmNull();
}
public override byte[] GetMasterSecret(PseudoRandomFunction prf, byte[] seed)
{
// TODO: Add more PRF IDs and their respective master secrets
byte[] prfID = prf.CreateDeriveBytes(new byte[0], new byte[0]).GetBytes(48);
if (CompareArrays(prfID, SSLv3ID)) {
return GetSSLv3MasterSecret(seed);
} else if (CompareArrays(prfID, TLSv1ID)) {
return GetTLSv1MasterSecret(seed);
} else {
throw new Exception("Unidentified PRF while getting ECDHE master secret");
}
}
public override byte[] GetMasterSecret(PseudoRandomFunction prf, byte[] seed)
{
throw new Exception("Master secret requested for null key exchange");
}
// Returns the resulting master secret, either GetClientKeys or // ProcessClientKeys needs to be called before calling this method public abstract byte[] GetMasterSecret(PseudoRandomFunction prf, byte[] seed);
public override byte[] GetMasterSecret(PseudoRandomFunction prf, byte[] seed)
{
if (_preMasterSecret == null)
throw new CryptographicException("Premaster secret not defined");
return prf.CreateDeriveBytes(_preMasterSecret, "master secret", seed).GetBytes(48);
}
public override byte[] GetMasterSecret(PseudoRandomFunction prf, byte[] seed)
{
throw new Exception("Master secret requested for null key exchange");
}
// Returns the resulting master secret, either GetClientKeys or // ProcessClientKeys needs to be called before calling this method public abstract byte[] GetMasterSecret(PseudoRandomFunction prf, byte[] seed);
