一种基于ElGamal数字签名的双向用户鉴别方案  

A Two-Way User Authentication Scheme Based on ElGamal Digital Signature

作　　者：邱慧敏[1] 杨义先[1] 胡正名[1] 周锡增 

机构地区：[1]北京邮电大学信息安全中心,北京100876 [2]台湾元智大学,台湾000320

出　　处：《北京邮电大学学报》2005年第3期100-102,共3页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金项目(60372094)

摘　　要：提出了一种实用的基于ElGamal数字签名和零知识证明的双向用户鉴别方案,通过随机数和在线的挑战-响应交互机制,保证了身份认证过程中身份认证请求信息的可靠性和有效性;同时利用智能卡技术充分保证了用户秘密信息的安全可靠,有效地解决了用户鉴别方案中密钥信息的安全分配与存储问题.最后,在离散对数计算困难假设的前提下,分析了该方案的安全性.Based on ElGamal digital signature and zero-knowledge, a practical two-way user authentication scheme was presented. It was obtained that reliability and availability of request information could be improved through random number and online challenge-response interactive system. Meantime, the problem about key distribution and storage related to user authentication scheme was solved securely and effectively by using smart card, and highly security of user information was acquired (accordingly) as well. As a conclusion, the securities of the proposed scheme under the assumption about the difficulty of computing discrete logarithm are analyzed.

关 键 词：用户认证 离散对数 数字签名 

分 类 号：TN309.2[电子电信—物理电子学]