基于时变双边混沌符号系统的流密码算法设计
Design of One Stream Cipher Algorithm Based on a Time-Varying Generalized Symbolic Chaotic System
摘要:
在研究了一类时变广义符号动力系统的混沌性及其构造方法的基础上，首先对这类系统所产生的混沌序列进行了一些伪随机性能分析和测试。然后，再综合现有的JK触发器和该系统混沌解序列设计了一种流密码算法。最后，将该算法用于数字图像加密之中，并对加解密效果进行了仿真。仿真效果说明了所设计的序列密码算法在图像加密上具有良好效果。
Abstract:
Based on the discussion of time-varying generalized symbolic chaotic systems and its construction method, pseudo-randomness of chaotic sequences produced by this system is firstly analyzed. Then, a stream cipher algorithm is designed based on chaotic sequences of this system and JK flip-flop. Finally, the designed algorithm is used in digital image encryption, and encryption and decryption effect is simulated. Simulation shows that the stream cipher algorithm has good effects in image encryption.
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