计算机科学 ›› 2015, Vol. 42 ›› Issue (7): 182-185.doi: 10.11896/j.issn.1002-137X.2015.07.040
李敬医 陈炬桦
LI Jing-yi CHEN Ju-hua
摘要： 为设计高效的、加密性能好的图像加密系统,充分结合混沌映射细胞自动机的良好加密性能,提出了一种基于3D混沌映射和2D二阶细胞自动机的图像加密方案。该算法先利用3D混沌映射对图片像素进行置乱,然后利用2D二阶细胞自动机对图像在比特级别进行更进一步的混淆。该算法属于对称密钥加密,具有较大的密钥空间和并行化的加解密过程。实验结果证明,该算法可以在较小的迭代次数内达到良好的加密效果,不会导致密文扩张,且加密结果能够抵御常见的暴力破解攻击、统计分析攻击和差分攻击,具有较高的安全性。
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