| 两个有效的基于CPK的组群密钥传输协议 |
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| 引用本文： | 邓少锋,邓帆,张文政,李益发.两个有效的基于CPK的组群密钥传输协议[J].武汉大学学报(信息科学版),2010(5). |
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| 作者姓名： | 邓少锋 邓帆 张文政 李益发 |
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| 作者单位： | 信息工程大学信息工程学院;成都市现代通信国家重点实验室; |
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| 基金项目： | 成都市现代通信技术国家重点实验室基金资助项目(9140C1103040902) |
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| 摘 要： | 基于CPK提出了两个安全的单轮组群密钥传输协议,且基于双因素认证———智能卡和口令。第一个协议使用中国剩余定理(CRT)隐蔽临时密钥,在CDH假设下可证安全;第二个协议使用秘密随机数矩阵(SRM)来组合生成临时密钥,并给出了SRM的安全更新方案。两个协议均具有较低的计算量和较高的应用价值。
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| 关 键 词： | 组合公钥密码体制 组群密钥传输协议 双因素认证 中国剩余定理 |
Two Efficient CPK-based Group Key Transfer Protocols |
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| DENG Shaofeng DENG Fan ZHANG Wenzheng LI Yifa.Two Efficient CPK-based Group Key Transfer Protocols[J].Geomatics and Information Science of Wuhan University,2010(5). |
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| Authors: | DENG Shaofeng DENG Fan ZHANG Wenzheng LI Yifa |
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| Institution: | DENG Shaofeng1 DENG Fan1 ZHANG Wenzheng2 LI Yifa1(1 Institute of Information Engineering,Information Engineering University,7 Jianxue Street,Zhengzhou 450002,China)(2 State Key Laboratory of Modern Communication,Sichuan Chengdu,6 Chuangye Road,Chengdu 610041,China) |
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| Abstract: | Based on CPK,two safe one-round group key transfer protocols are presented,which are both authenticated using two factors namely a password and a smart card.The temporary keys are protected by the Chinese Remainder Theorem(CRT) in the first protocol,which is provably secure under the CDH assumption.In the second protocol,the temporary keys are generated by the combination of the elements of the secret random number matrix(SRM).The secure renewal process of the SRM is also given.Both protocols have lower com... |
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| Keywords: | CPK group key transfer protocol two-factor authenticated CRT |
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