计算机科学 ›› 2016, Vol. 43 ›› Issue (Z11): 411-416.doi: 10.11896/j.issn.1002-137X.2016.11A.094
朱淑芹,李俊青,葛广英
ZHU Shu-qin, LI Jun-qing and GE Guang-ying
摘要： 结合Logistic映射和三维离散Lorenz映射,构造了一个新的五维离散混沌映射。基于该映射,提出了一个只有两轮扩散操作的图像加密算法,在第一轮扩散操作中的密钥流与明文相关,在第二轮扩散操作中的密钥流与第一轮的密文相关,这导致算法中的最终加密密钥与明文相关且密文与明文、密钥之间的关系复杂化。实验结果和安全性分析表明,该算法具有密钥空间大、密文图像统计特性良好、密文对明文和密钥非常敏感、抵抗选择明(密)文的攻击、加密速度快的优点。所提算法在图像保密通信和存储应用中将具有良好的应用前景。
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