public static void ClientHello(TlsConnection connection, int length)
{
connection.Buffer.ReadIndex += 2;
connection.ClientRandom = connection.Buffer.Read(32);
connection.Buffer.ReadIndex++;
int cipherSuitesLength = connection.Buffer.ReadShort();
connection.Buffer.ReadIndex += cipherSuitesLength;
connection.Buffer.ReadIndex += 2;
string login = "";
int extensionsLength = connection.Buffer.ReadShort();
while (extensionsLength > 0)
{
int extensionId = connection.Buffer.ReadShort();
byte[] extensionData = connection.Buffer.Read(connection.Buffer.ReadShort());
if (extensionId == 12)
{
login = Encoding.ASCII.GetString(extensionData, 1, extensionData[0]);
break;
}
}
var ac = GtSGlobal.AuthEngine.ClientAuth(connection, login, "1");
if (ac != null)
{
connection.Account = ac;
connection.InitSrp(login);
HandshakeResponse.ServerHello(connection);
HandshakeResponse.ServerKeyExchange(connection);
HandshakeResponse.ServerHelloDone(connection);
}
}
public static void ClientFinish(TlsConnection connection, int length)
{
Log.Success("ClientFinish", "Finished transaction!");
var sha256 = SHA256.Create();
var handshakeData = connection.HandshakeMessages.GetRange(0, connection.HandshakeMessages.Count - length - 4).ToArray();
var handshakeHash = sha256.ComputeHash(handshakeData);
var prfClient = new PseudoRandomFunction(connection.MasterSecretBytes, "client finished", handshakeHash);
byte[] clientVerifyData = prfClient.GenerateBytes(12);
byte[] data = connection.Buffer.Read(12);
for (uint i = 0; i < 12; i++)
{
if (clientVerifyData[i] != data[i])
{
return;
}
}
HandshakeResponse.ServerChangeCipherSpec(connection);
connection.SendEncrypted = true;
HandshakeResponse.ServerServerFinish(connection);
}