IEICE Electronics Express
Online ISSN : 1349-2543
LETTER
Differentiability of four prefix-free PGV hash functions
Hidenori KuwakadoShoichi Hirose
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Volume 6 (2009) Issue 13 Pages 955-958

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Abstract

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.

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