该文回顾了过去混沌密码理论与应用的现状及存在的问题,并对其进行了综合评述.重点报道了近年来高维混沌密码及其在多媒体保密通信中的应用与硬件实现技术的进展,其中包括基本理论、设计方法、典型应用以及解决这些问题的思路.在混沌密码设计与安全性能评估方面,报道了以下几个方面的进展:基于反控制方法设计无简并高维混沌密码增强数字混沌的抗退化能力;无退化数字域混沌系统的设计;具有闭环反馈的有限精度高维混沌长周期序列流密码的多轮加密设计方案;高维混沌密码的安全性能评估.在多媒体保密通信中的应用与硬件实现方面,报道了针对手机,计算机,ARM,FPGA,DSP等手持设备所需不同应用业务、广域网和WIFI无线通信网传输的实时远程混沌保密通信应用环境和多位一体的应用平台进行优化融合,创建示范验证系统等若干技术实现问题的进展.该文试图推进国内外未来混沌密码理论及其应用的研究.%This paper reviews the past situation and existing problems in chaotic cipher theories and applications, and reports the recent progress of some issues on theoretical design and hardware implementation of ciphers based on high-dimensional chaos system, including basic theory, design methods, typical applications, and ideas coping with the problems. In the aspect of design of chaotic cipher and its security evaluation, the following progress is summarized: counteracting dynamics degradation of digital chaotic systems with anti-control methods; designing no-degeneration chaotic systems in digital domain; proposing a multi-round chaotic stream cipher with the high-dimensional digital chaotic systems and feedback mechanism of self-loop; evaluating security level of the proposed chaotic ciphers with various methods. In the aspect of application and hardware implementation of multimedia secure communication, the following developments are reported: optimizing a cross platform conducting real-time remote chaotic secure communication, targeting different application businesses of hand-held devices, such as smartphone, computer, ARM, FPGA; and establishing a demonstration platform on chaotic secure communications to verify the effectiveness.
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