| 基于几何方法的双服务器口令认证与密钥协商 |
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| 引用本文： | 葛丽娜,唐韶华.基于几何方法的双服务器口令认证与密钥协商[J].计算机集成制造系统,2008,14(8). |
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| 作者姓名： | 葛丽娜 唐韶华 |
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| 作者单位： | 华南理工大学,计算机科学与工程学院,广东,广州,510640 |
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| 基金项目： | 国家自然科学基金，霍英东教育基金，教育部跨世纪优秀人才培养计划 |
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| 摘 要： | 为了在保持口令认证系统代价低、易于使用等特点的同时,克服其单点失效、易受字典攻击等缺陷,提高其安全性,提出了基于几何方法的双服务器口令认证与密钥协商.用户口令分解为两个具有随机分布特性的子口令交付于两个服务器,由两个服务器共同完成口令认证,并同步协商会话密钥.口令认证协议中消息的形成与交换,采用几何方法代替基于离散对数难题等公钥技术.分析表明,用户口令、会话密钥是安全的;协议中只含模加与模乘运算,运算简单、快速.
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| 关 键 词： | 口令 认证 数据安全 密码学 几何方法 双服务器 |
Password-based two-server authentication and key exchange based on geometric approaches |
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| GE Li-na,TANG Shao-hua.Password-based two-server authentication and key exchange based on geometric approaches[J].Computer Integrated Manufacturing Systems,2008,14(8). |
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| Authors: | GE Li-na TANG Shao-hua |
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| Affiliation: | GE Li-na,TANG Shao-hua(School of Computer Science & Engineering,South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | To keep the advantages of low cost and easy use in password-based authentication system while getting rid of the single-point of vulnerability,avoiding dictionary attacks and improving its security,a password-based two-sever authentication and key exchange system based on geometric approaches was proposed.The password chosen by user was decomposed into two uniformly random numbers and kept secretly by two servers respectively.The authentication was carried out by two servers collaboratively.A session key wa... |
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| Keywords: | password authentication data security cryptography geometric approach two-server |
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