char MPacketCrypter::_Enc(char s, char key) { WORD w; BYTE b, bh; b = s ^ key; w = b << m_nSHL; bh = (w&0xFF00)>>8; b = w&0xFF; return( BYTE( b | bh ) ^ 0xF0 ); //0xF0 default packet encrypt } char MPacketCrypter::_Dec(char s, char...