Cryptology ePrint Archive: Report 2010/658

ABC - A New Framework for Block Ciphers

Uri Avraham and Eli Biham and Orr Dunkelman

Abstract: We suggest a new framework for block ciphers named Advanced Block Cipher, or shortly ABC. ABC has additional non-secret parameters that ensure that each call to the underlying block cipher uses a different pseudo-random permutation. It therefore ensures that attacks that require more than one block encrypted under the same secret permutation cannot apply. In particular, this framework protects against dictionary attacks, and differential and linear attacks, and eliminates weaknesses of ECB and CBC modes. This new framework shares a common structure with HAIFA, and can share the same logic with HAIFA compression functions. We analyze the security of several modes of operation for ABCs block ciphers, and suggest a few instances of ABCs.

Category / Keywords: secret-key cryptography / Block Ciphers, ABC, AModes, Tweakable ciphers

Publication Info: None.

Date: received 27 Dec 2010, last revised 6 Aug 2011

Contact author: uria at cs technion ac il

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Version: 20110806:145325 (All versions of this report)

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