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New Attacks against Standardized MACs

  • Antoine Joux
  • Guillaume Poupard
  • Jacques Stern
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2887)

Abstract

In this paper, we revisit the security of several message authentication code (MAC) algorithms based on block ciphers, when instantiated with 64-bit block ciphers such as DES. We essentially focus on algorithms that were proposed in the norm ISO/IEC 9797–1. We consider both forgery attacks and key recovery attacks. Our results improve upon the previously known attacks and show that all algorithms but one proposed in this norm can be broken by obtaining at most about 233 MACs of chosen messages and performing an exhaustive search of the same order as the search for a single DES key.

Keywords

Exhaustive Search Block Cipher Giant Component Forgery Attack Double Collision 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • Antoine Joux
    • 1
  • Guillaume Poupard
    • 1
  • Jacques Stern
    • 2
  1. 1.DCSSI Crypto LabParis 07France
  2. 2.Département d’InformatiqueEcole normale supérieureParis Cedex 05France

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