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计算机工程

• 安全技术 • 上一篇    下一篇

多服务器环境下的身份认证方案

刘 莎1a,朱淑华1b,2   

  1. (1. 暨南大学a. 信息科学技术学院;b. 网络与教育技术中心,广州510632;2. 中山大学信息科学与技术学院,广州510006)
  • 收稿日期:2014-03-25 出版日期:2015-03-15 发布日期:2015-03-13
  • 作者简介:刘 莎(1989 - ),女,硕士研究生,主研方向:信息安全,密码学;朱淑华,高级工程师、博士研究生、CCF 高级会员。
  • 基金资助:
    国家自然科学基金资助项目(61272415);广东省产学研及科技计划基金资助项目(2012A080102007,2011B090400324, 2011B090400469,2012B040305008);广东省工程中心基金资助项目(GCZX-A1103);广州市科技计划基金资助项目(2013Y2-00071)。

Identity Authentication Scheme in Multi-server Environment

LIU Sha  1a ,ZHU Shuhua  1b,2   

  1. (1a. School of Information Science and Technology; 1b. Network & Educational Technology Center,Jinan University,Guangzhou 510632,China; 2. School of Information Science and Technology,Sun Yat-Sen University,Guangzhou 510006,China)
  • Received:2014-03-25 Online:2015-03-15 Published:2015-03-13

摘要: 基于智能卡的多服务器远程认证方案,存在不能抵抗伪造攻击、重放攻击和中间人攻击等问题。针对上述 安全性缺陷,提出一种改进的身份鉴别方案。该方案利用自验证的时间戳技术,解决基于时间戳技术的认证方案 中存在的时钟同步问题,同时将时间戳作为随机数,有效地避免遭受重放攻击。安全性分析结果表明,与基于智能 卡的多服务器远程认证方案相比,该方案继承了其轻量级认证的特征,计算量低,存储量小,实现了服务器对用户 的可追踪性,满足实际网络的复杂性要求。

关键词: 认证, 智能卡, 时间戳技术, 口令, 多服务器环境

Abstract: Smart card based authentication scheme for multi-server environments can not resist some known types of attacks,such as forgery attacks,reply attacks and the man-in-the-middle attacks. In order to resolve the aforementioned security problems,this paper proposes a novel multi-server scheme. In new scheme,a self-verified timestamp technique is used to solve the problem of implementing clock synchronization in most typical timestamp-based scheme. In addition, timestamp can be used as random and it is efficient to avoid the reply attacks. Security analysis shows that,compared with smart card based multi-server remote authentication scheme,this scheme not only inherits the merits,such as lightweight computation and low memory size,but also can provide some features,such as the users’ traceability,and it extremely suits for the requirements of the complicated network environment.

Key words: authentication, smart card, timestamp technique, password, multi-server environment

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