摘要
通过对Henon映射的改进,增大了混沌参数区间,减小了周期窗口,扩展了密钥空间.为避免长时间使用固定混沌序列作为密钥带来的安全隐患,使用改进的Henon映射设计了一种用于VOIP的动态IP分组加密方案,实现了语音加密.测试结果表明,动态分组加解密系统具有良好的保密效果,可用于网络语音加密.
With the improvement of Henon mapping,the chaotic parameter interval is increased,the period window is reduced,and the key space is extended.In order to avoid the security hidden danger caused by using fixed chaotic sequence for long time,a dynamic IP packet encryption scheme for VOIP is designed by using the improved Henon mapping.Test results show that the dynamic packet encryption and decryption system has a good security effect,which can be used for network voice encryption.
基金
国家自然科学基金资助项目(60971046
61281230357)
浙江省自然科学基金重点资助项目(LZ12F01001)
