摘要： 给出了一个基于智能卡的远程访问口令认证方案，它能够对登录口令进行检验而不需要检索口令表。它利用了公钥密码系统的签名特性，其安全性依赖于离散对数问题和因数分解问题。特点是网络用户可以自由选择其口令，通过对口令增加时间戳还可抵抗重放攻击。

关键词: 智能卡, 认证, 数字签名, 公钥

Abstract: A smart card based on remote access password authentication scheme is given, which can verify a log-in password without verification table. It utilizes the signature property of public key systems. Its security is based on the difficulty of factoring a large number and on the discrete logarithm problem. Not only can the network users freely choose their preferred passwords, but the network system can also be protected against replaying by time stamping the password.

中图分类号: 

• TP393.08