Cryptology ePrint Archive: Report 2008/540

New Impossible Differential Attacks on AES

Jiqiang Lu and Orr Dunkelman and Nathan Keller and Jongsung Kim

Abstract: In this paper we apply impossible differential attacks to reduced round AES. Using various techniques, including the early abort approach and key schedule considerations, we significantly improve previously known attacks due to Bahrak-Aref and Phan. The improvement of these attacks leads to the best known impossible differential attacks on 7-round AES-128 and AES-192, as well as to the best known impossible differential attacks on 8-round AES-256.

Category / Keywords: secret-key cryptography / AES, Impossible differential cryptanalysis

Publication Info: INDOCRYPT 2008 (this is the full version)

Date: received 22 Dec 2008

Contact author: orr dunkelman at ens fr

Available format(s): PDF | BibTeX Citation

Version: 20081228:090100 (All versions of this report)

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