public byte[] Compile(byte[] key, int keyOffset, Client.ENCODE_TYPE encodeType, out int outLength)
{
byte[] encryptedPacket;
packetExtendType = memStream.GetBuffer()[0];
//if (!isCompiled)
//{
memStream.Position = 0;
// streamWriter.Write(Encrypt.NewPacket(memStream.ToArray(), packetType, key, keyOffset, encodeType));
encryptedPacket = Encrypt.NewPacket(memStream.ToArray(), packetType, key, keyOffset, encodeType);
// isCompiled = true;
//}
outLength = (int)encryptedPacket.Length;
return(encryptedPacket);
}
public static byte[] NewPacket(byte[] data, byte header, byte[] key, int keyOffset, Client.ENCODE_TYPE encodeType)
{
if (key == null || data == null)
{
Output.WriteLine("Encrypt::NewPacket - key or data is empty return untouched");
return(data);
}
UInt16 addLength = (UInt16)(Program.random.Next(_ADD_BYTES) + _MIN_BYTES);
if ((UInt64)(data.Length + Program.sendHeaderLength + Program.sendPrefixLength + addLength) >= UInt32.MaxValue)
{
Output.WriteLine("Encrypt::NewPacket - Packet size too large - can't send");
return(null);
}
byte[] Out = new byte[Program.sendPrefixLength + Program.sendHeaderLength + data.Length + addLength];
UInt16 realLength = (UInt16)(data.Length + Program.sendPrefixLength + Program.sendHeaderLength);
UInt16 finalLength = (UInt16)(data.Length + Program.sendPrefixLength + Program.sendHeaderLength + addLength);
byte[] lReal = new byte[2];
byte[] lFinal = new byte[2];
lReal = BitConverter.GetBytes(realLength);
lFinal = BitConverter.GetBytes(finalLength);
byte head = header;
Out[0] = lFinal[1];
Out[1] = lReal[0];
Out[2] = head;
Out[3] = lFinal[0];
Out[4] = lReal[1];
byte[] tmp = new byte[1];
for (int i = 0; i < addLength; i++)
{
Program.random.NextBytes(tmp);
Out[realLength + i] = tmp[0];
}
data.CopyTo(Out, 5);
switch (encodeType)
{
case Client.ENCODE_TYPE.AES:
break;
case Client.ENCODE_TYPE.BXO:
break;
case Client.ENCODE_TYPE.COD:
Out = Crypt.Coder.EncodeBuffer(Out, key[0]);
break;
case Client.ENCODE_TYPE.XOR:
Out = Crypt.Xor.Encrypt(Out, key, keyOffset);
break;
default:
Out = Crypt.Xor.Encrypt(Out, key, keyOffset);
break;
}
if (Program.DEBUG_Encrypt)
{
Output.WriteLine("Encrypt::NewPacket KeyOffset: " + keyOffset.ToString() + " Recv real length: " + BitConverter.ToUInt16(lReal, 0).ToString() + " final length: " + BitConverter.ToUInt16(lFinal, 0).ToString());
}
return(Out);
}
