一种可认证的三方密钥协商协议

新协议提出了一个安全高效的三方密钥交换协议方案,通过在CDH假设下运用椭圆曲线密码体制,将长期私钥和临时私钥混合的方法保证协议的安全,通过对该协议的安全性进行分析,表明该协议可以抵御多种攻击;另一方面,将参与方中的任意两方作为一组,生成一个共同密钥,然后两方中的任意一方再与第三方进行消息认证和密钥协商,这样仅需要五次信息交互就可以实现整个协议的相互认证和密钥的确认功能,同时通过协议的比较还表明该协议具有较高的效率。

A Tripartite Key Agreement Protocol of Authentication

The new agreement proposed a safe and effective tripartite key exchange protocol,through assumptions in CDH,using elliptic curve cryptosystem keystore and temporary long-term keystore mixed method to assure the security,through the agreement the safety of this agreement are analyzed,show that this agreement can resist many attack;On the other hand,any of the parties involved two sides as a group,generates a common key,then both sides of arbitrary party with third parties again authentication and key agreement,news that need only five times information interaction can achieve the whole agreement of mutual authentication and key confirmation function,but through the comparison also show that agreement has high efficiency.