Cryptology ePrint Archive: Report 2003/199

Cryptanalysis of a Message Authentication Code due to Cary and Venkatesan

Simon R. Blackburn and Kenneth G. Paterson

Abstract: We present a cryptanalysis of a MAC proposal at CRYPTO 2003 due to Cary and Venkatesan. Our attacks find collisions for the MAC and yield MAC forgeries, both faster than a straightforward application of the birthday paradox would suggest.

Category / Keywords: secret-key cryptography / message authentication codes, cryptanalysis

Date: received 25 Sep 2003

Contact author: s blackburn at rhul ac uk

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Version: 20030925:171304 (All versions of this report)

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