| 高效的口令基认证组密钥协商协议 |
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| 引用本文： | 舒剑,许春香. 高效的口令基认证组密钥协商协议[J]. 电子科技大学学报(社会科学版), 2009, 0(3) |
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| 作者姓名： | 舒剑 许春香 |
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| 作者单位： | 电子科技大学计算机科学与工程学院;江西财经大学国际经贸学院; |
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| 基金项目： | 国家863计划(2009AA012415) |
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| 摘 要： | 对认证的口令基组密钥协商协议进行安全分析,指出传送数据中的冗余导致协议的不安全。基于Burmester and Desmedt的协议,给出一种改进的协议。该协议的计算复杂度较低,通信轮数较少;该协议不但满足前向安全性、双向认证性,还能有效地抵抗中间人攻击。最后,依赖于Diffie-Hellman(CDH)假设,在随机预言机和理想密码模型下证明了协议的安全性。
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| 关 键 词： | 认证 熵 组密钥协商 可证安全 公钥密码 |
Efficient Password-Based Authenticated Group Key Exchange Protocol |
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| SHU Jian, XU Chun-xiang. Efficient Password-Based Authenticated Group Key Exchange Protocol[J]. Journal of University of Electronic Science and Technology of China(Social Sciences Edition), 2009, 0(3) |
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| Authors: | SHU Jian XU Chun-xiang |
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| Affiliation: | SHU Jian1,2 , XU Chun-xiang1 (1.School of Computer Science , Engineering,University of Electronic Science , Technology of China Chengdu 610054,2.School of International Trade , Economics,University of Jiangxi Financial Economics Nanchang 330013) |
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| Abstract: | The security of an authenticated group key exchange is analyzed,the results show that it is insecure due to redundancy of the exchange messages.Based on the protocol of Burmester and Desmedt,an improved protocol is proposed with merits in terms of computation and communication.The improved protocol provides not only the capability of forward secrecy and mutual authentication,but also the capability against man-in-middle attack.The protocol is proven secure in the random-oracle and ideal-cipher models under ... |
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| Keywords: | authentication entropy group key exchange provable security public key cryptography |
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