Ye Qing, Zhang Qiaojia, Liu Sijie, Chen Kaiqiang
Department of Information Security, Naval University of Engineering, Wuhan 430033, China.
College of Electronic Engineering, Naval University of Engineering, Wuhan 430033, China.
Math Biosci Eng. 2021 Oct 28;18(6):9410-9429. doi: 10.3934/mbe.2021463.
Video information is currently widely used in various fields. Compared with image and text data, video data has the characteristics of large data volume, strong data relevance, and large data redundancy, which makes traditional cryptographic systems no longer suitable for video encryption systems. The paper proposes a new chaotic system based on coupled map lattice (CML) and applies it to high efficiency video coding (HEVC) video encryption. The chaotic system logistic-iterative chaotic map with infinite collapses-coupled map lattice (L-ICMIC-CML), which is improved on the basis of the ICMIC system and combined with CML, generates stream ciphers and encrypts some syntax elements of HEVC. The experimental results show that the stream cipher generated by the L-ICMIC-CML system passes the SP800-22 Revla test and has strong randomness. Applying the stream cipher to the proposed HEVC encryption scheme, through the analysis of the encryption scheme's security, encryption time and encryption efficiency, it is better than other chaotic system encryption schemes. The video encryption system proposed in this paper is both safe and efficient.
视频信息目前在各个领域中得到广泛应用。与图像和文本数据相比，视频数据具有数据量巨大、数据关联性强和数据冗余度大的特点，这使得传统加密系统不再适用于视频加密系统。本文提出了一种基于耦合映射格子（CML）的新型混沌系统，并将其应用于高效视频编码（HEVC）视频加密。在ICMIC系统的基础上进行改进并结合CML的具有无限崩塌的逻辑迭代混沌映射耦合映射格子（L-ICMIC-CML）混沌系统生成流密码，并对HEVC的一些语法元素进行加密。实验结果表明，L-ICMIC-CML系统生成的流密码通过了SP800-22 Revla测试，具有很强的随机性。将该流密码应用于所提出的HEVC加密方案，通过对加密方案的安全性、加密时间和加密效率的分析，其优于其他混沌系统加密方案。本文提出的视频加密系统既安全又高效。
