基于混沌序列的DES彩色图像加密算法

证明了DES异或运算的一个重要性质，结合混沌序列的优良特性提出了一种基于混沌序列和DES的彩色图像加密算法和解密算法。该算法首先由Ulam-von Neumann映射生成加密的密钥，然后对图像进行DES异或运算，得到加密图像。解密的过程就是需要得到与加密时相同的密钥，利用DES异或逆运算的性质得到解密图像。实验结果表明该算法能够得到令人满意的结果。

DES Color Image Encrypt Algorithms Based On Chaotic Sequence

In this paper, we proposed a new method for digital color image encryption based on chaotic sequence and DES in cryptography. Combined with the Logistic mapping in non-linear dynamics system, an image encrypting and decrypting algorithm based on DES XOR operation is designed. Firstly, a natural chaotic sequence is created with the key. The image matrix is transformed with this chaotic sequence, using DES XOR operation for scrambling, to obtain an encrypted image. The decrypting operation is the reverse process of encryption. The simulation indicates that the proposed algorithm can get satisfactory results. Finally, the characteristics and effects of the algorithm are summarized and the aspects of the subsequent work are discussed.