一种基于Logistic映射的数据加密算法

针对以原文叠加确定性混沌随机序列为核心的一般混沌加密算法保密性较低的特点,提出了一种以将原文变换为混沌随机序列为核必思想的基于Logistic映射的数据加密算法。该算法采用固定字长离散化、加入扰动项的方法,将Logistic映射修正为一一映射,并实现了将"信号"变换成"噪声"的加密思路。实例演示表明该算法简便快捷,保密性高,扩展性强,具有很好的应用前景,可广泛用于军事通信保密、网络信息安全等领域。

Data encryption algorithm based on logistic-map

Traditional chaotic encryption algorithm has lower security because chaotic random sequence is added on signal directly. A data encryption algorithm based on logistic-map is presented. The kernel is the transformation of signal into chaotic random sequence. Logistic-map is modified to an one-one mapping through discretization by fixing the word-length of computer and introduction of the disturbance mapping, and the encryption idea of converting signal into noise is realized. The algorithm has many advantages, such as simplicity and rapidness of calculation, high security, and better extensibility. There is much prospect of the algorithm being put in practice. It can be applied to military encryption communication, network information security and so on.