机构地区: 西安电子科技大学
出 处: 《应用科学学报》 1997年第4期418-423,共6页
摘 要: 例示了有限域上的幂函数作为非线性置换的具体实现,提出了两个新的S盒的设计准则,给出了一批具均匀输入输出差分分布特性的密码参数,最后提供了一个猜想. The exponential functions over a finite field, which are chosen as some nonlinear permutations, are illustrated in details. Two new principles of designing S-boxes are proposed. Series of cryptographic parameters are calculated with characteristics of equivalent I/O differential distribution. And an assumption is put forward.