DOI: 10.5176/2251-2217_SEA12.37
Authors: Nikolai Stoianov, Emil Altimirski
Abstract: An encryption technique is widely used to keep data
confidential. Most of the block symmetric algorithms use
substitution functions. Often this functions use so called S-BOX
matrix. Based on information theory functions for testing
dynamic criteria are presented. These criterions are
mathematically defined for square s-boxes. In this paper authors
present algorithms for testing and measuring dynamic criteria of
square s-boxes.
Keywords: cryptography, AES, S-BOX, encryption, substitution
matrix
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