Logistic映射控制的安全算术编码及其在图像加密中的应用

提出了一种通过Logistic映射改变模型中符号的顺序及符号的概率值的安全算术编码，将其应用于图像数据的压缩加密中，使其在网络中安全传输更方便，在编码过程中通过完全混沌的序列保证改变模型的均匀性，从而满足图像压缩编码的安全性要求。算法能够应用于任何针对多媒体数据的算术编码器(包括视频，图像，音频等)，并且对编码的效率影响甚微，而且基于编码压缩的加密方式相对于其他同类加密方式所具有的明显优势在于，压缩过程大量减少了信息的冗余性，并在此过程中引入加密，这对试图推测出图像信息以及找到密钥的攻击具有良好的鲁棒性。

Logistic map controlled secure arithmetic coding and its application in image encryption

A logistic map controlled secure arithmetic coding is proposed, the Logistic map is used to control the order of the symbols in the model and change the probabilities of the symbols, which is applied to the image encryption. The proposed scheme makes the image transmit more secure and comfortably on the Internet, and that is done at little expense in terms of coding efficiency. In the coding process, it ensures the uniformity of the model being changed by the chaotic sequence, thus to meet the security requirements of image compression. The algorithm can be applied to any arithmetic codec based on multimedia data including video, image and audio. Its most strength compared with other cipher mode is that, there is a significant reduction in the redundancy of information during the compression process, and it is robust when attempting to estimate the information of the image and discovering the key. The scheme can effectively resist differential analyses from both cryptography and coding.