基于混沌映射的加密算法

A Encryption Based on Chaotic Map

为了使低维混沌加密算法具有更高安全性的同时能更好的抗差分攻击,提出了用约瑟夫变换对加密序列进行混乱和扩散,并且利用明文反馈改变迭代次数,使得经Logistic映射加密后的序列能提高抗破译性.结果分析显示该算法具有较好的加密强度;对比单纯基于Logistic系统的混沌加密算法,该算法解决了低维混沌序列保密性不够缺点。

In order to increase the security of Chaos-based Encryption Algorithm while better anti-differential attack,proposed that encryption sequences carry on the confusion and the proliferation with Joseph Transform, and it can change the number of iteration used express feedback, enables the sequence to enhance anti-breaks after the Logistic mapping encryption. Results showed that the encryption algorithm has good strength of encryption ; contrast to Chaotic Encryption Algorithm which simple based on Logistic Systems , the algorithm has good operational efficiency, solved the low-dimensional Chaotic Encryption Algorithm which lack of confidentiality .