Title :
An Extended Method for Obtaining S-Boxes Based on Discrete Chaos Map System
Author :
Xu, Gang ; Zhao, Geng ; Min, Lequan
Author_Institution :
Sch. of Inf. Eng., Univ. of Sci. & Technol., Beijing, China
Abstract :
An extended method for obtaining crypto-graphically strong substitution boxes (S-boxes) based on discretized chaotic map system (DCMS) is presented in this paper. The S-boxes´ design criteria such as bijection, nonlinearity, strict avalanche, output bits independence and equiprobable input/output XOR distribution of these S-boxes are analyzed in detail. The results of numerical analysis show that all the criteria for designing good S-box can be met approximately. As a result, our approach is suitable for practical application in designing block cryptosystem.
Keywords :
block codes; chaotic communication; cryptography; S-boxes design criteria; cryptographically strong substitution box; discrete chaos map system; equiprobable input/output XOR distribution; Boolean functions; Chaos; Computational intelligence; Computer science; Computer security; Cryptography; Information security; Numerical analysis; Random variables; Scheduling;
Conference_Titel :
Computational Intelligence and Security, 2009. CIS '09. International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-5411-2
DOI :
10.1109/CIS.2009.146
