Tweaking AES

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Ivica Nikolic

Published: 2010, Last Modified: 15 May 2025Selected Areas in Cryptography 2010EveryoneRevisionsBibTeXCC BY-SA 4.0
Abstract: In this paper we present a tweak for the key schedule of AES in a form of a few additional basic operations such as rotations and S-boxes. This leads to a new cipher, which we call xAES, and which is resistant against the latest related-key differential attacks found in AES. xAES has a speed benchmark close to the one of AES even in the applications which use a frequent change of the master key.