Substitution-box for symmetric-key ciphers

Details Substitution-box for symmetric-key ciphers Substitution-box for symmetric-key ciphers

2006-05-09

2006-05-09

Revak, Christopher (Department: 2136)

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

C380S046000, C380S047000, C380S028000

Reexamination Certificate

active

07043016

ABSTRACT:
An input data block is cryptographically converted into an output data block; by performing a non-linear operation on the input data block using an S-box based on permutations. The S-box is associated with a set of at least two permutations. Each time before the S-box is used, one of the permutations is (pseudo-)randomly selected from the set of permutations and used for the conversion.

REFERENCES:
patent: 4972476 (1990-11-01), Nathans
patent: 5796837 (1998-08-01), Kim et al.
patent: 6038317 (2000-03-01), Magliveras et al.
patent: 6182216 (2001-01-01), Luyster
patent: 6243470 (2001-06-01), Coppersmith et al.
patent: 6266417 (2001-07-01), Scheidt et al.
patent: 6314186 (2001-11-01), Lee et al.
patent: 6334197 (2001-12-01), Eroz et al.
patent: 6510538 (2003-01-01), Jakobsen
patent: 2001/0019610 (2001-09-01), Shimoyama
Heys, H. M. ; Travares, S. E., The Design of Secure Block Ciphers, Communications-17th Biennial symposium on communications, 1994; vol. 17 P.: 417-422.
Youssef, A.M Chen, Z.G., Tavares S.E. Construction of highly nonlinear injective S-boxes with application to CAST -like encryption algorithms, Electrical and Computer Engineering, 1997, IEEE 1997 Canadian Conference vol. 1, pp. 330-333.
Eli Biham et al, “How to Strengthen DES Using Existing Hardware”, Advances in Cryptology- Asiacrypt '94, 4thInternational Conference on the Theory and Applications of Cryptology, Wollongong, Australia, Nov. 28-Dec. 1, 1994, Proceedings of the Conference on the Theory and Applications of Cryptology, vol. Conf. 4, Nov. 28, 1994, pp. 398-412, XP000527605.

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