一种基于多密码体制的混合加密算法

摘要

Aiming at the problem that constructing methods in hybrid encryption algorithms are fixed,a multi-crypto system hybrid encryption algorithm model based on RSA and Hill is proposed. Firstly,the plaintext is divided by a series of random numbers which are encrypted by the RSA cipher as a session key in the hybrid encryption algorithm.Then the key of Hill cipher is replaced by Pascal matrix whose generation algorithm has been improved.Security analysis and experimental results show that this encryption algorithm has better encryption efficiency and stronger anti-attack capacity.%针对混合加密算法构造方法固定的问题,提出了一种基于 RSA和 Hill的多密码体制混合加密算法模型.首先,根据生成的一系列随机数分割明文,将混合加密算法中会话密钥转换为明文的随机分割数,并使用RSA密码对其加密.然后,改进Pascal矩阵生成算法,用该算法生成的Pascal矩阵代替 Hill密码的密钥对明文加密.安全性分析和实验结果表明,该加密算法具有较强的抗攻击性和较好的加密效率.