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Erschienen in:
1988 | OriginalPaper | Buchkapitel
A Generalized Birthday Attack
verfasst von : Marc Girault, Robert Cohen, 2)Mireille Campana
Erschienen in: Advances in Cryptology — EUROCRYPT ’88
Verlag: Springer Berlin Heidelberg
Enthalten in: Professional Book Archive
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We generalize the birthday attack presented by Coppersmith at Crypto’85 which defrauded a Davies-Price message authentication scheme. We first study the birthday paradox and a variant for which some convergence results and related bounds are provided. Secondly, we generalize the Davies-Price scheme and show how the Coppersmith attack can be extended to this case. As a consequence, the case p=4 with DES (important when RSA with a 512-bit modulus is used for signature) appears not to be secure enough.