public static void EncryptPacket(Socket socket, ServerState state, int messageId, int unknown, byte[] plainText)
{
byte[] cipherText;
if (messageId == 20100 || (messageId == 20103 && state.sharedKey == null))
{
cipherText = plainText;
}
else if (messageId == 20103 || messageId == 20104)
{
byte[] nonce = GenericHash.Hash(state.clientState.nonce.Concat(state.clientKey).Concat(state.serverKey.PublicKey).ToArray(), null, 24);
plainText = state.nonce.Concat(state.sharedKey).Concat(plainText).ToArray();
cipherText = PublicKeyBox.Create(plainText, nonce, state.serverKey.PrivateKey, state.clientKey);
}
else
{
// nonce was already incremented in ClientCrypto.DecryptPacket
cipherText = SecretBox.Create(plainText, state.nonce, state.sharedKey).Skip(16).ToArray();
}
byte[] packet = BitConverter.GetBytes(messageId).Reverse().Skip(2).Concat(BitConverter.GetBytes(cipherText.Length).Reverse().Skip(1)).Concat(BitConverter.GetBytes(unknown).Reverse().Skip(2)).Concat(cipherText).ToArray();
socket.BeginSend(packet, 0, packet.Length, 0, new AsyncCallback(SendCallback), state);
}
public Client(ServerState serverstate)
{
this.state.serverState = serverstate;
this.state.clientKey = this.clientKey;
this.state.serverKey = ClientCrypto.serverKey;
}
