@inproceedings{cb03b0089971414c8e2e4d12aa52030c,
title = "Cryptanalysis of FORK-256",
abstract = "In this paper we present a cryptanalysis of a new 256-bit hash function, FORK-256, proposed by Hong et al. at FSE 2006. This cryptanalysis is based on some unexpected differentials existing for the step transformation. We show their possible uses in different attack scenarios by giving a 1-bit (resp. 2-bit) near collision attack against the full compression function of FORK-256 running with complexity of 2125 (resp. 2120) and with negligible memory, and by exhibiting a 22-bit near pseudo-collision. We also show that we can find collisions for the full compression function with a small amount of memory with complexity not exceeding 2126.6 hash evaluations. We further show how to reduce this complexity to 2109.6 hash computations by using 273 memory words. Finally, we show that this attack can be extended with no additional cost to find collisions for the full hash function, i.e. with the predefined IV.",
keywords = "hash functions, cryptanalysis, FORK-256, micro-collisions",
author = "Krystian Matusiewicz and Thomas Peyrin and Olivier Billet and Scott Contini and Josef Pieprzyk",
year = "2007",
language = "English",
isbn = "354074617X",
volume = "4593 LNCS",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
publisher = "Springer, Springer Nature",
pages = "19--38",
editor = "Alex Biryukov",
booktitle = "Fast Software Encryption - 14th International Workshop, FSE 2007",
address = "United States",
note = "14th International Workshop on Fast Software Encryption, FSE 2007 ; Conference date: 26-03-2007 Through 28-03-2007",
}