Paper 2005/151
Improved Collision Attack on MD4
Yusuke Naito, Yu Sasaki, Noboru Kunihiro, and Kazuo Ohta
Abstract
In this paper, we propose an attack method to find collisions of MD4 hash function. This attack is the improved version of the attack which was invented by Xiaoyun Wang et al [1]. We were able to find collisions with probability almost 1, and the average complexity to find a collision is upper bounded by three times of MD4 hash operations. This result is improved compared to the original result of [1] where the probability were from $2^{-6}$ to $2^{-2}$, and the average complexity to find a collision was upper bounded by $2^8$ MD4 hash operations. We also point out the lack of sufficient conditions and imprecise modifications for the original attack in [1].
Metadata
- Available format(s)
-
PDF
- Category
- Secret-key cryptography
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- Collision AttackMD4Hash FunctionMessage Modification
- Contact author(s)
- tolucky @ ice uec ac jp
- History
- 2005-05-26: received
- Short URL
- https://ia.cr/2005/151
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2005/151,
author = {Yusuke Naito and Yu Sasaki and Noboru Kunihiro and Kazuo Ohta},
title = {Improved Collision Attack on {MD4}},
howpublished = {Cryptology {ePrint} Archive, Paper 2005/151},
year = {2005},
url = {https://eprint.iacr.org/2005/151}
}
