基于超混沌的快速图像加密算法

针对现有基于超混沌的图像加密算法存在安全性不足和运行效率低的缺点,提出了一种改进算法。该算法通过优化像素置乱、像素替换和密文扩散过程进一步混淆明文图像和密文图像的关系,并通过引入新的超混沌序列量化方法,减少超混沌系统的迭代次数,提高运行效率。实验仿真结果表明,算法具有很高的安全性和实用性,可广泛运用于图像保密通信等领域。

Fast image encryption algorithm based on hyper-chaos

To overcome current image encryption algorithms’ lack of security and efficiency, a new one based on hyper chaos is proposed. The algorithm confuses the relationship between the plaintext and the ciphertext by pixel permutation, pixel substitution and ciphertext diffusion. Besides, a new quantification method of hyper chaos sequences is adopted to reduce hyper chaos system’s iteration, which leads to an increase of 〖JP2〗algorithm’s efficiency. Comprehensive simulation experiments are performed, and the results show that the proposed algorithm has high security and practicability, and it can be widely applied to the field of secret communication.