Publication Details

Seberry, J, Zhang, XM and Zheng, Y, How to improve the SAC, Proceedings of the 1994 Workshop on Selected Area in Cryptography (SAC'94), Kingston, Ontario, Canada, 52-58, May, 1994.


This paper presents a simple yet effective method for transforming Boolean functions that do not satisfy the strict avalanche criterion (SAC) into ones that satisfy the criterion. Such a method has a wide range of applications in designing cryptographically strong functions, including substitution boxes (S-boxes) employed by common key block encryption algorithms.