The RDP protocol uses the RC4 symmetric encryption algorithm with up to 128 bit keys.The RC4 encryption keys are generated after an initial key exchange in which RSA asymmetric encryption is used.

• RDP协议的使用对称加密算法rc4多达128位钥匙.；rc4加密后所产生的一个初步的交流；其中的关键是使用RSA的非对称加密