对折置乱算法及置乱度分析

论文通过对准逆序置乱算法的研究,提出了一种新颖的置乱处理算法—对折置乱算法。针对一维序列置乱算法分别按行列对图像置乱所固有的弊端进行了改进,获得了良好的置乱效果,并具有保密功能。同时提出了一个置乱度评估指标,该指标实现了严格意义上的归一化,计算简单而有效。

Folio Scrambling Algorithm and Degree of Scrambling Analysis

In this paper, a novel scrambling processing algorithm called Folio Scrambling Algorithm (FSA) is proposed after researching the Quasi-anti-order Scrambling Algorithm (QSA). We find that one-dimensional sequence scrambling algorithms have inherent fault if scramble an image by row or column. An elementary improve upon these algorithms has been achieved by using private key, which make the scrambling system have the function of encryption. Proposing an assessment indicator upon scrambling processing. The indicator's proposing is meaningful in two aspects, one is the achievement of proper normalization, the other is estimating the effects of one-dimensional sequence algorithms conveniently. Experiment results shows that the algorithm is effective.