[Resource Topic] 2005/327: On the Security of Encryption Modes of MD4, MD5 and HAVAL

Welcome to the resource topic for 2005/327

Title:
On the Security of Encryption Modes of MD4, MD5 and HAVAL

Authors: Jongsung Kim, Alex Biryukov, Bart Preneel, Sangjin Lee

Abstract:

MD4 is a cryptographic hash function introduced in 1990 by Rivest.
After MD4 was proposed, several hash functions such as MD5, HAVAL,
RIPEMD, RIPEMD-160, SHA-1 and SHA-256 were designed based on the
MD4 structure. In this paper, we cryptanalyze the compression
functions of MD4, MD5 and 4-, 5-pass HAVAL in encryption modes. We
exploit the recently proposed related-key rectangle and boomerang
techniques to show non-randomness of MD4, MD5 and 4-, 5-pass HAVAL
and to distinguish them from a randomly chosen cipher. The attacks
are highly practical and have been confirmed by our experiments.

ePrint: https://eprint.iacr.org/2005/327

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