基于口令认证的密钥协商协议研究

Research on key agreement protocol based on password authentication

通过构建密钥协商协议为公开网络通信提供安全的会话密钥,保障通信安全。针对当前密钥协商协议抗攻击性能不好、公钥密码体制不安全的问题,提出基于口令认证的密钥协商协议设计方法。首先基于网络部署构建密钥预分配方案,采用Logistics混沌映射构建公钥加密方案;然后根据口令认证分组加密技术构建混合安全的密钥协商协议;最后通过仿真实验进行性能测试。实验结果表明,采用设计的密钥协商协议能提高密文的抗攻击能力,该方案的安全性得到证明。

The key agreement protocol was constructed to provide a secure session key for the public network communica?tion,and guarantee the communication security. Since the current key agreement protocol has poor anti?attack performance and unsafe public key cryptosystem,the design method of the key agreement protocol based on password authentication is proposed.The key pre?distribution scheme was built based on the network deployment. The Logistics chaotic mapping is used to construct the public key encryption scheme. The key agreement protocol of the mixed security was constructed according to the password authentication grouping encryption technology. The performance of the protocol was tested with simulation experiment. The experi?mental results show that the key agreement protocol can improve the performance against the cipher text attack,and its securitywas proved.