Conference paper
Fragile imperceptible digital watermark with privacy control
D. Coppersmith, Fred Mintzer, et al.
Proceedings of SPIE - The International Society for Optical Engineering
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.
D. Coppersmith, Fred Mintzer, et al.
Proceedings of SPIE - The International Society for Optical Engineering
Alok Aggarwal, D. Coppersmith, et al.
SODA 1997
Alok Aggarwal, Amotz Bar-Noy, et al.
Journal of the ACM
D. Coppersmith, C. Neff
SODA 1994