internal void Receive(ICertificateProvider certProvider, INetState ns, HttpsReader reader)
{
RecordHandshake(reader.Buffer, reader.Length, !reader.IsDecrypted);
EHandshake handshakeType = (EHandshake)reader.ReadByte();
int handshakeMsgLength = reader.Read24BitInt();
HttpsReader.VerifyLengthRemaining(reader, handshakeMsgLength, "Ssl handshake");
switch (handshakeType)
{
case EHandshake.ClientHello:
ReceiveClientHello(certProvider, ns, reader);
break;
case EHandshake.ClientKeyExchange:
ReceiveClientKeyExchange(certProvider, ns, reader);
break;
case EHandshake.Finished:
ReceiveClientFinished(ns, reader);
break;
default:
ns.Send(new HttpsSmsgAlert(ns.Https, 2, 10));
throw new HttpsException($"sent unknown handshake 0x{handshakeType:X}", reader);
}
}
// --- Https Change Cipher Spec ---
internal void ReceiveChangeCipherSpec(INetState ns, HttpsReader reader)
{
byte payload = reader.ReadByte();
HttpsReader.VerifyLengthRemaining(reader, 0, "ChangeClientSpec");
if (payload != 0x01)
{
throw new HttpsException($"sent ChangeCipherSpec with wrong payload.", reader);
}
SessionIdentifier = _Handshake.SessionIdentifier;
SequenceNumberReceived = 0;
SequenceNumberSent = 0;
CipherSuite = _Handshake.CipherSuite;
_KeyBlock = _Handshake.GetKeyBlock();
Decryptor = CipherSuite.GetTransform(_KeyBlock.ClientWriteKey);
Encryptor = CipherSuite.GetTransform(_KeyBlock.ServerWriteKey);
// DeMAC = CipherSuite.GetMAC(_KeyBlock.ClientWriteMACKey);
// EnMAC = CipherSuite.GetMAC(_KeyBlock.ServerWriteMACKey);
IsClientEncrypting = true;
}