简要介绍了RSA 算法及Feige-Fiat-Shamir 数字签名协议,利用这两种算法构造了一种交互式用户认证方案,并且在此基础上实现了双向认证。该方案充分体现了RSA 算法的安全性和Feige-Fiat-Shamir 算法的高效性,与只利用其中一种实现用户认证比较,增强了安全性,具有良好的应用价值和前景。关键词:RSA、Feige-Fiat-Shamir、数字签名、双向身份认证Abstract: This paper introduces RSA arithmetic and Feige-Fiat-Shami digital agreement. We make use of these two kinds of arithmetic to construct an mutual user attestation project., on which we realize double-direction user authentacation. This project fully embodies the safety of RSA arithmetic and the efficiency of Feige-Fiat-Shamir arithmetic. Compared to the use of the only one arithmetic, it strengthens the safety so that it possesses good application value and foreground.Key word: RSA,digital signature; Feige-Fiat-Shamir;double-direction user authentacation
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