摘要
为了加强几何认证方案的安全性,设计了一种基于圆特性的几何认证与密钥协商方案,该方案根据"n维空间圆上n+1个点可以唯一重构一个圆"的n维空间圆构造原理,采用多变量单向散列函数来计算登录消息,加强了用户登录消息的安全性,使方案能抵抗口令猜测、重放、窃听与离线消息分析攻击.文中采用形式化方法证明了该方案是安全的.
In order to improve the security of the authentication scheme based on geometric properties, an identity authentication and key agreement scheme based on circle properties is proposed, the basic principle of which is that an n-dimension circle can be reconstructed by any n ＋ 1 n-dimension points on it, and a multi-variable one-way hash function is used to calculate the login message and to improve the robustness of the login message for security. Thus, the scheme ean withstand the attacks, such as the password guess, replay, eavesdropping and off-line mes- sage analysis. The proposed scheme is proved secure by a formal approach at last.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2009年第5期111-117,共7页
Journal of South China University of Technology(Natural Science Edition)
基金
国家"863"计划项目(2007AA01Z424)
国家自然科学基金资助项目(60572139)
国家科技支撑计划项目(2007BAH13B03)
教育部新世纪优秀人才支持计划项目(NCET-06-0744)
霍英东教育基金资助项目(101069)
关键词
身份认证
密钥协商
安全性
圆特性
形式化方法
identity authentication
key agreement
security
circle property
formal approach
