Hill密码中剩余阵的逆矩阵的求法及Matlab实现

Inverse Matrix Solution and Matlab Implementstion in Hill Password Residual Matrix

在计算机网络中,为了保证数据的保密性和可靠性,需要对数据进行加密与解密。本文先介绍了Hill密码算法,指出Hill密码密钥矩阵即剩余阵的逆矩阵存在的充要条件,最后较详细讨论了求剩余阵的逆矩阵的算法及其Matlab程序,从而可通过Hill密码对信息进行快速加密与解密,实现用户信息安全保护。

In computer networks, in order to guarantee the confidentiality and reliability of the data, need to encrypt and de?crypt data. This paper first introduces the Hill cipher algorithm, once pointed out that Hill password key matrix is a suffi?cient and necessary condition for the existence of residual matrix inverse matrix, and finally discusses the detail of residual matrix inverse matrix algorithm and Matlab, which can be through the Hill password to fast encryption and decryption of in?formation, realize the user information security protection.