Title

Cryptanalysis of Some Hash Functions Based on Block Ciphers and Codes

Publication Type

Journal Article

Publication Date

2002

Abstract

At PKC 2000, Inoue and Sakurai proposed some methods to design hash functions from block ciphers and codes (block codes and convolutional codes). They claimed that their hash functions are secure: 2^((d-1)m/2) encryptions are necessary to find a collision, where d and m are the minimal distance of the code and the block size of block cipher, respectively. However, we show in this paper that a collision could be found with about alpha*2^m encryptions, where alpha is a small number.

Discipline

Information Security

Research Areas

Information Security and Trust

Publication

Informatica: A Journal of Computing and Informatics

Volume

26

Issue

3

First Page

255

Last Page

258

ISSN

0350-5596

Publisher

Slovenian Society Informatika

City or Country

Ljubljana

Additional URL

http://www.informatica.si/vols/vol26_3_02abs.html#2

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