摘要： 为提高无线网络中移动用户与外部网络相互认证的效率，增强认证的安全性，研究椭圆曲线上的离散对数难问题，提出一种基于智能卡的用户匿名认证方案。在每次认证过程中，移动用户只需要执行一次哈希操作、两次对称加密和一次对称解密。分析结果证明，该方案安全有效，能抵御各种已知的攻击。

关键词: 椭圆曲线密码系统, 匿名, 认证, 智能卡, 哈希函数

Abstract: In order to improve the efficiency and enhance the security of mutual authentication in wireless network. Based on Elliptic Curve Discrete Logarithm Problem(ECDLP), this paper proposes an efficient anonymity authentication scheme based on smart card in wireless network. It demonstrates that computation is efficient, with only one hash operation, two symmetric encryptions and one symmetric decryption for a mobile node. Analysis shows that it is immune to various known types of attacks while achieving identity anonymity.

Key words: Elliptic Curve Cryptosystem(ECC), anonymity, authentication, smart card, hash function

中图分类号: 

• TP393.08