通信学报2012，Vol.33Issue(1)：120-127,8.
一般SPT模型的抗差分和线性攻击安全性研究
Security against differential and linear cryptanalysis for general SPT models
刘凤梅 1陈连俊 1李春祥 1李艳梅 1张国双1
作者信息
- 1. 信息保障技术重点实验室,北京100072
- 折叠
摘要
Abstract
To use SP network in stream ciphers safely and efficiently, the ability against differential and linear cryptana-lysis of SPT models was studied, where S and T denote two different layers for substitution, in which compression could be achieved, and P denotes the layer for permutation. The upper bound of the maximum differential probability was given when the branch number of P was optimal, and the upper bound of the maximum linear approximation probability and the maximum linear hull probability are given when the branch number of P was optimal and when S and T were balanced. As a consequence, the problem about evaluating the security against differential and linear cryptanalysis for general SPT models was resolved partially.关键词
分支数/差分概率/线性优势/线性逼近优势/线性包优势Key words
branch number/ differential probability/ linear probability/ linear approximation probability/ linear hull probability分类
信息技术与安全科学引用本文复制引用
刘凤梅,陈连俊,李春祥,李艳梅,张国双..一般SPT模型的抗差分和线性攻击安全性研究[J].通信学报,2012,33(1):120-127,8.
