基于身份可证安全的双方密钥协商协议

Identity-based security provable two parties authentication and key agreement

针对双方认证和密钥协商协议中会话双方属于不同密钥产生中心的情况,利用双线性对性质和BDH假设,基于可证安全的eCK模型提出一种基于身份可证安全的双方密钥协商协议。该协议从测试会话在随机谕示模型中是否存在相应的匹配会话两个方面,对提出的协议方案进行了安全性证明:若BDH假设不可解,则本方案是安全的认证密钥协商协议。

Based on the extended Canetti-Krawczyk （eCK） model and the bilinear pairing and BDH assumption, the paper proposed an identity-based security provable authentication and key agreement scheme. This scheme could be applied in the situation that two session parties belong to different private key generators respectively. Moreover, proved the scheme to be secure in the random oracle model from two sides ： if matching session of the test session exists or not. The demonstration finally shows the proposed scheme is secure if the BDH assumption is intractable.