Attack on a concast signature scheme

Authors:
D. R. Stinson
Affiliations:
School of Computer Science, University of Waterloo, Waterloo, ON, N2L 3G1, Canada
Venue:
Information Processing Letters - Devoted to the rapid publication of short contributions to information processing
Year:
2004

Citing 2
Cited 1

Handbook of Applied Cryptography

Handbook of Applied Cryptography
Authentication of Concast Communication

INDOCRYPT '02 Proceedings of the Third International Conference on Cryptology: Progress in Cryptology

Group testing and batch verification

ICITS'09 Proceedings of the 4th international conference on Information theoretic security

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Abstract

Al-Ibrahim, Ghodosi and Pieprzyk proposed several methods of batch signature verification suitable for concast communication. These schemes are all based on El-Gamal-type signature schemes. We prove that their preferred scheme, which does not require interaction among the various signers, is insecure.