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();
}
protected HashAlgorithm GetSignatureHashAlgorithm(SignatureAlgorithm signatureAlgorithm, byte hashAlgorithmType)
{
if (!signatureAlgorithm.SupportsHashAlgorithmType(hashAlgorithmType))
{
throw new AlertException(AlertDescription.IllegalParameter,
"Illegal hash algorithm type");
}
HashAlgorithm hashAlgorithm;
switch (hashAlgorithmType)
{
case 1:
hashAlgorithm = new MD5CryptoServiceProvider();
break;
case 2:
hashAlgorithm = new SHA1CryptoServiceProvider();
break;
case 4:
hashAlgorithm = new SHA256Managed();
break;
case 5:
hashAlgorithm = new SHA384Managed();
break;
case 6:
hashAlgorithm = new SHA512Managed();
break;
default:
throw new AlertException(AlertDescription.InternalError,
"Unsupported hash algorithm type: " + hashAlgorithmType);
}
return hashAlgorithm;
}