中文摘要：

针对Shen，Lin，Hwang提出的远程用户认证协议不安全的问题，改进了Shen—Lin—Hwang的方案，并基于双线性对技术提出了一个新的远程用户认证协议。同时对新协议进行了有效性分析，并证明了该协议能够抵抗已知的各种攻击。在本方案中，单向哈希函数的应用有效，证明该方案效率较高、收敛速度较快，而且基于该方案的各种应用比较容易实现和操作。

英文摘要：

Because the modified remote user authentication scheme proposed by Shen, Lin and Hwang is insecure, the Shen-Lin-Hwang＇ s scheme is improved and a new secure remote user authentication scheme based on the bi- linear parings is proposed. Moreover, the effectiveness of the new scheme is analyzed, and it is proved that the new scheme can prevent from all kinds of known attack. The one-way hash function is effective in the new scheme. The new scheme is proved that it has high effectiveness and fast convergence speed. Moreover, the ap- plication of the new scheme is easy and operational.