G. Bongiovanni, D. Coppersmith, et al.
IEEE Transactions on Communications
Paper
Attacks on MacDES MAC algorithm
Abstract
Two attacks on message authentication code (MAC) algorithm 4 from ISO/IEC FDIS 9797-1 is described, which apply when it is used with padding method 1 or 2, and where no MAC truncation is employed. In this case the attacks are significantly more efficient than the best previously known attack.
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Fragile imperceptible digital watermark with privacy control
D. Coppersmith, Fred Mintzer, et al.
Proceedings of SPIE - The International Society for Optical Engineering