一种基于混沌序列的彩色图像加密算法  

New Color Image Encryption Algorithm Based on Chaos Sequences

作　　者：穆秀春[1] 訾鸿[1] 

机构地区：[1]黑龙江科技学院电气与信息工程学院,黑龙江哈尔滨150027

出　　处：《现代电子技术》2010年第14期53-55,58,共4页Modern Electronics Technique

摘　　要：提出一种基于混沌序列的彩色图像加密算法。该算法首先应用二维Logistic混沌系统产生2个混沌序列,利用对2个混沌序列进行排序产生的2个编号序列对彩色图像进行位置的置乱,然后应用三维Lorenz混沌系统产生的混沌序列中各值进行大小排序,用以引导对置乱后的彩色图像进行像素点的R,G,B值的置换操作,从而实现对颜色的加密。实验结果表明,该算法具有密钥空间大、安全性高和保密性好的特点。A color image encryption algorithm based on the chaos sequences is proposed, which generates two chaos sequences by 2D Logistic chaos system, scrambles the position of color images by two coding sequences produced by ranking the two chaos sequences, and then carries out the scrambling operation in which the R,G,B values of pixel points of the scrambled color images are shuffled by the ranking of three chaos sequences produced by 3D Lorenz chaos system to realize the color en- eryption. The experimental results show that this algorithm has a large key space, high security and good conficentialty.

关 键 词：混沌序列 置乱 彩色图像 像素置换 

分 类 号：TN309[电子电信—物理电子学]