北京大学学报(自然科学版)

• 北京大学学报 •

多PKG环境下无双线性对的基于身份AKA协议

尤娟1, 夏松2,李俊全1   

  1. 1. 解放军信息工程大学电子技术学院, 郑州 450004; 2. 解放军电子工程学院, 合肥 230037;
  • 收稿日期:2011-04-14 出版日期:2012-03-20 发布日期:2012-03-20

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

YOU Juan1, XIA Song2, LI Junquan1   

  1. 1. Electronic Technology Institute, PLA Information Engineering University, Zhengzhou 450004; 2. Hefei Electronic Engineering Institute PLA, Hefei 230037;
  • Received:2011-04-14 Online:2012-03-20 Published:2012-03-20

摘要: 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。

关键词: 基于身份, 认证密钥协商, 多PKG环境, 双线性对

Abstract: 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.

Key words: ID-based, authenticated key agreement, multiple PKG environments, bilinear pairing

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