[Resource Topic] 2014/216: Implementation and Improvement of the Partial Sum Attack on 6-round AES

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Title:
Implementation and Improvement of the Partial Sum Attack on 6-round AES

Authors: Francesco Aldà, Riccardo Aragona, Lorenzo Nicolodi, Massimiliano Sala

Abstract:

The Partial Sum Attack is one of the most powerful attacks, independent of the key schedule, developed in the last 15 years against reduced-round versions of AES. In this paper, we introduce a slight improvement to the basic attack which lowers the number of chosen plaintexts needed to successfully mount it. Our version of the attack on 6-round AES can be carried out completely in practice, as we demonstrate providing a full implementation. We also detail the structure of our implementation, showing the performances we achieve.

ePrint: https://eprint.iacr.org/2014/216

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