电子商务的数据加密保护

Design and Security Analysis of Cipher Block Algorithm

构造的分组加密算法由满足Luby和Rackoff的超伪随机结构的Feistel型网络代换加密模型、满足严格雪崩准则的2DM扩散矩阵及由4个满足平衡性、高非线性度及满足严格雪崩特征的布尔函数的非线性变换F三个独立结构所构成。基本上达到了文中所述的数据加密算法的6条基本规则。

Cipher block algorithm developed in this paper is based on three independent elements:feistel network substitution based on Ruby and Rackoff super pseudorandom structure,2 DM diffusion matrix as well as four nonlinear boolean functions with balanced property,high nonlinear property together with strict avalanche property that are nearly closed to the basic design principles of a block cipher described in the paper.