基于无证书密码学的可认证三方密钥协商协议

为了使密钥协商协议能够抵抗主动攻击，提出了一个可认证的无证书三方密钥协商协议。首先分析现有密钥协商协议的特点，然后以无证书密码学理论为基础设计一个安全的三方密钥协商协议。该协议只需要一轮消息交换就可以建立起安全的三方会话密钥，有效地克服了密钥托管问题，提供完善的前向安全性。通过性能分析表明，该协议具有较高的安全性和运行效率。

Authenticated tripartite key agreement protocol based on certificateless cryptography

In order to make key agreement protocol to resist against the active attacks, proposed a certificateless authenticated tripartite key agreement protocol. First, analysed the existing key agreement protocol. Then designed a security tripartite key agreement scheme based on the theory of certificateless cryptography. This protocol builds a security tripartite session key only need one round message exchange, which can strongly overcome the key escrow and offer perfect forward secrecy. The analysis of security and complexity shows that this protocol is secure and effective.