基于可变S盒的分组密码算法及其在媒体网关中的应用

分组密码算法是信息安全领域中最为重要的加解密技术之一。与传统的分组密码不同，该算法具有可变的S盒和变化的循环加密结构，从而大大提高了抗差分攻击和线性攻击的能力。结合某媒体网关的设计项目，研究了该算法并详细探导了其设计方法。员后，测试了算法的实际性能。

A Changeable S-box-based Block Cipher Algorithm and Its Application to Multimedia Gateway Controller

Block cipher is one of the most important encryption and decryption algorithms in information security.Different from that of classic block cipher algorithms,the algorithm pro-posed by this paper has a changeable S-box and different cycle encryption structure.As the result of that,this algorithm im-proves its anti-differential and anti-linear attack ability.Com-ing from a MGC design program,this paper studies this algo-rithm and its design method in detail.At last,the performance of this algorithm is traced.