一种无可信第三方的认证协议研究

多数认证方案都有一个管理中心,即可信的第三方。然而,在一些特殊的环境下,这样的可信第三方并不存在或者遭到破坏。因此,无可信第三方的认证方案是非常必要的。本文提出了一种为通信各方提供消息加密和认证的安全认证协议。安全网络系统一旦建立,就不需要可信的第三方（密钥管理中心）,双向认证和密钥交换可由通信的双方仅仅通过两条消息就能完成。

Research of an Authentication Protocol Without Trusted Third Party

There exists either a management center or a trusted third party in many authentication schemes.However,the trusted third party is nonexistent or destroyed under some special environment.A secure authentication protocol which supports both the privacy of messages and the authenticity of communicating parties is proposed.The trusted third party（key management center） is not needed once the secure network system is set up.Mutual authentication and key distribution can be achieved with two messages merely between two parties involved.