Paper 2009/376
Cryptanalysis of the Tillich-Zémor hash function
Markus Grassl, Ivana Ilic, Spyros Magliveras, and Rainer Steinwandt
Abstract
At CRYPTO ’94, Tillich and Zémor proposed a family of hash functions, based on computing a suitable matrix product in groups of the form SL_2(F_{2^n}).We show how to construct collisions between palindromic bit strings of length 2n + 2 for Tillich and Zémor’s construction. The approach also yields collisions for related proposals by Petit et al. from ICECS ’08 and CT-RSA ’09. It seems fair to consider our attack as practical: for parameters of interest, the colliding bit strings have a length of a few hundred bits and can be found on a standard PC within seconds.
Metadata
- Available format(s)
-
PDF
- Category
- Foundations
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- cryptanalysishash functions
- Contact author(s)
- rsteinwa @ fau edu
- History
- 2009-08-03: received
- Short URL
- https://ia.cr/2009/376
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2009/376,
author = {Markus Grassl and Ivana Ilic and Spyros Magliveras and Rainer Steinwandt},
title = {Cryptanalysis of the Tillich-Zémor hash function},
howpublished = {Cryptology {ePrint} Archive, Paper 2009/376},
year = {2009},
url = {https://eprint.iacr.org/2009/376}
}
