摘要： 针对当前主流混沌置乱加密算法防御性不强的问题,提出一种新的量子混沌图像加密算法,采用量子Logistic混沌序列与比特置乱后的图像进行加密运算。对明文各像素比特位进行全局置乱,再对中间密文进行加密运算,得到加密图像。通过引入量子混沌系统,解决了Logistic混沌系统随机性差、控制参数少的问题。实验结果表明,该算法摒弃了传统加密算法常用的异或运算,在统计特性和抗攻击性等方面比常规算法性能更好。

关键词: 比特置乱, 量子混沌系统, 图像加密, 混沌, Logistic映射

Abstract: Aiming at the problem of poor defensiveness of the current popular chaotic scrambling encryption algorithm, this paper proposes a new quantum chaos image encryption algorithm, which uses quantum Logistic chaotic sequence and bit scrambled image for encryption.Global scrambling of each pixel’s bits of plaintext is done, and encryption operation of the intermediate ciphertext is carried out to obtain the encrypted image.The algorithm solves the problems of bad randomness and few control parameters of Logistic chaotic system by introducing a quantum chaotic system.Experimental results show that this algorithm abandons XOR operation used in traditional encryption algorithms,and it performs better in the statistical characteristics, anti-attack performance and other aspects.

Key words: bit scrambling, quantum chaos system, image encryption, chaos, Logistic mapping

中图分类号: 

• TP301.6