一种基于PLCM序列的软件加密算法

网络视频信号实时保密通信是网络通信研究的热点之一。为提高加密速度和通信的安全性,文章提出了一种基于PLCM序列的软件加密算法。该算法利用SSE2指令集来进行浮点运算,通过对不同时刻迭代生成的混沌序列进行基于位逻辑运算的非线性变换,来达到既能快速生成密码序列,又能保证加密安全性的目的。分析表明该算法能有效地抵抗多分辨率攻击以及已知明文攻击。实验结果证明使用该算法能达到网络视频信号保密通信实时加解密的要求。

A Software Encryption Algorithm Based on PLCM Sequences

Real-time video security communication in the network is the hotspot of the research of network communication.In order to improve the velocity of encryption and the security of video communication,this paper presents a kind of encryption algorithm based on PLCM sequences.This algorithm uses Intel's SSE2 instructions to compute the float numbers and take the sequence in different time in non-linear boolean calculation cooperations to produce the cipher sequences quickly and securely.It is proved that this algorithm can resist multi-resolving power attack and known-plaintext attack effectly.Experiments show that the algorithm can meet the need of real-time video encryption in the network.