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IEICE Electronics Express
Vol. 6 (2009) No. 13 P 955-958




A Preneel-Govaerts-Vandewalle hash function with a prefix-free padding method (PF-PGV hash function) is a block-cipher-based iterative hash function. Chang et al. claimed that 16 PF-PGV hash functions were indifferentiable from a random oracle. This letter shows that 4 out of 16 PF-PGV hash functions are not indifferentiable from a random oracle.

Copyright © 2009 by The Institute of Electronics, Information and Communication Engineers

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