提出了一种新的可否认的认证协议。本协议基于公开密钥算法,利用了Hash函数以及传统的加密技术。本协议使得接收者能够辨别出某个消息发送者的身份,但是第三者不会知道发送者的身份,满足可否认认证协议的要求。同时本协议能够抵抗中间人攻击。 Proposed a new denied authentication protocol. This protocol is based on a public key algorithm that takes advantage of Hash functions as well as traditional encryption techniques. This protocol allows the recipient to identify the identity of a sender of the message, but the third party does not know the identity of the sender to meet the requirements of a deniable authentication protocol. At the same time this agreement can resist man-in-the-middle attacks.