Lecture notes in computer sciences; 218 on Advances in cryptology---CRYPTO 85
Resistance of balanced s-boxes to linear and differential cryptanalysis
Information Processing Letters
A new kind of science
How to Improve the Nonlinearity of Bijective S-Boxes
ACISP '98 Proceedings of the Third Australasian Conference on Information Security and Privacy
Evolutionary Heuristics for Finding Cryptographically Strong S-Boxes
ICICS '99 Proceedings of the Second International Conference on Information and Communication Security
The design of S-boxes by simulated annealing
New Generation Computing - Evolutionary computation
Designing substitution boxes for secure ciphers
International Journal of Innovative Computing and Applications
Cryptographically Strong S-Boxes Based on Cellular Automata
ACRI '08 Proceedings of the 8th international conference on Cellular Automata for Reseach and Industry
Cellular Automata-Based S-Boxes vs. DES S-Boxes
PaCT '09 Proceedings of the 10th International Conference on Parallel Computing Technologies
| Hi-index | 0.00 |
The most important elements of many block ciphers are nonlinear functions known as substitution boxes (S-boxes). Classical S-boxes are usually represented by numerical tables, which are used today in current cryptographic standards, such as Data Encryption Standard (DES) or Advanced Encryption Standard (AES), but in the result of developing methods of cryptanalysis they do not ensure enough safety of ciphers. Therefore, the open research issue now is to design new more sophisticated classes of S-boxes, in particular dynamic ones. In this paper we propose a methodology to design dynamic cellular automata (CA)-based S-boxes, which can be considered as a generator of CA-based S-boxes. We provide an exhaustive experimental analysis of the proposed CA-based S-boxes in terms of non-linearity, autocorrelation, balance and strict avalanche criterion. We show that the proposed S-boxes have high quality cryptographic properties (high non-linearity and balance, also low autocorrelation and distance to fulfill strict avalanche criterion). The interesting feature of the proposed S-boxes is a dynamic flexible structure, fully functionally realized by CA, while the classical S-boxes are represented by predefined unchangeable table structures.