Cryptology ePrint Archive: Report 2014/216

Implementation and improvement of the Partial Sum Attack on 6-round AES

Francesco Aldą and Riccardo Aragona and Lorenzo Nicolodi and Massimiliano Sala

Abstract: The Partial Sum Attack is one of the most powerful attacks developed in the last 15 years against reduced-round versions of AES. 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.

Category / Keywords: implementation / Symmetric Cryptography, Cryptanalysis, Advanced Encryption Standard, Partial Sum Attack

Date: received 24 Mar 2014, last revised 7 Apr 2014

Contact author: ric aragona at gmail com

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Version: 20140407:185835 (All versions of this report)

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