多PKG环境下无双线性对的基于身份AKA协议

Identity-Based Authenticated Key Agreement Protocols without Bilinear Pairing in Multiple PKG Environments

提出一种多PKG环境下无双线性对的基于身份AKA协议,且在随机预言模型下,将协议的安全性证明规约到标准的计算性CDH假设。提出了相应的基于身份XCR与DCR签名体制,通过对两处体制进行安全性证明,实现对新协议的安全性证明。通过与已有协议的相关性能比较体现了新协议的优点。

The authors present an identity-based authenticated key agreement protocol without bilinear pairing in multiple PKG environments. Reduced to the standard computational Diffie-Hellman （CDH） assumption in the random oracle model, the protocol security is given a complete proof based on the security of proposed ID-based exponential challenge-response （XCR） signature scheme and dual challenge-response （DCR） signature scheme. Compared with previous identity-based authenticated key agreement protocols, the new protocol shows better performances.