四 、 we adopt encryption and decryption technology based on permutation code 四、我们采用排列码加密算法进行加密、解密。
In this paper we mainly study the realization of digital signature card based on permutation code 本文主要研究基于排列码加密解密算法的数字签名智能卡的实现。
Permutation code broke through the traditional concept of block algorithm , and improved the encrypt intensity greatly 排列码加密解密算法突破了传统的分组密码的旧观念,使加密强度有了较大幅度的提高。
Compare dbs aes with permutation code , we found use encryption and decryption technology based on permutation code , can ensure the encrypted software ca n ' t be pirated 对比des 、 aes ,说明使用排列码加密算法,是可以保证被加密的软件安全性的。
The secret hash digital signature is a new siganture method that combines the ideas of rsa public - key algorithm , md5 one - way hash function and permutation code at the same time 保密散列数字签名算法利用rsa公钥密码体制的原理、 md5单向散列函数和排列码加密的思想,构造了一种能够快速实现数据保密、数字签名的签名方案。