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基于压缩编码的加密方式能够同时完成加密和压缩的功能,通过压缩减少了信息的冗余,同时引入加密使对试图推测出明文信息和找到密钥的攻击具有非常好的鲁棒性.本文提出了一种基于一阶Markov模型的安全算术编码,在编码过程中通过随机密钥保证图像压缩编码的安全性,且显著提高编码的压缩效率,使其方便在网络中安全传输.实验结果和安全性分析表明,算法能够抵抗现有的各种基于算术编码的安全性攻击和其他密码学分析。
Encryption based on compression coding can accomplish the functions of encryption and compression at the same time, reduce the redundancy of information through compression, at the same time, the introduction of encryption makes it very robust to attack trying to infer the plaintext information and find the key.This paper presents In this paper, a kind of secure arithmetic coding based on first-order Markov model is proposed, which guarantees the security of image compression by random key in coding process and significantly improves the compression efficiency of coding so that it can be transmitted safely in the network.Experimental results and safety The analysis shows that the algorithm can resist the existing variety of security attacks based on arithmetic coding and other cryptographic analysis.