Generating Pseudorandom S-Boxes - a Method of Improving the Security of Cryptosystems Based on Block Ciphers

• Autorzy: Mroczkowski P.
• Języki publikacji: EN

Abstrakty

EN

The paper presents a general framework for improving the security of the cryptosystem based on the symmetric block cipher. The main idea is based on possibility of chancing substitution boxes (called S-boxes) in encryption/decryption algorithm. In order to make it possible, it is necessary to generate identical boxes by an encryption and decryption party. This is the main reason, why deterministic methods of generating substitution boxes based on the pseudorandom sequences will be presented.

Słowa kluczowe

EN

block cipher; pseudorandom bit generator; substitution box (S-box)

• Wydawca: Instytut Łączności - Państwowy Instytut Badawczy
• Czasopismo: Journal of Telecommunications and Information Technology
• Rocznik: 2009
• Tom: nr 2
• Strony: 74--79
• Opis fizyczny: Bibliogr. 6 poz., rys., tab.

Twórcy

autor

Mroczkowski P.

• Military Communication Institute, Warszawska st 22A, 05-130 Zegrze, Poland,

Bibliografia

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• [3] M. Leśniewicz, “Sprzętowy generator ciągow losowych do zastosowań kryptograficznych”, in Proc. Symp. XVII KST 2001, Bydgoszcz, Poland, 2001 (in Polish).
• [4] T. W. Cusik, C. Ding, and A. Renevall, Stream Ciphers and Number Theory. North Holland: Mathematical Library, 1998.
• [5] I. D. Damagard, “On the randomness of Legendre and Jacobi sequences”, in Advanced in Cryptology – Eurocrypt’88. Berlin: Springer-Verlag, 1988.
• [6] A. Menezes, P. van Oorschot, and S. Vanstone, Handbook of Applied Cryptography. Boca Raton: CRC Press, 1997.