Paper 2015/149 Original: eprint.iacr.org/2015/149 ↗
Cryptanalysis of HMAC/NMAC-Whirlpool
Abstract
In this paper, we present universal forgery and key recovery attacks on the most popular hash-based MAC constructions, e.g., HMAC and NMAC, instantiated with an AES-like hash function Whirlpool. These attacks work with Whirlpool reduced to 6 out of 10 rounds in single-key setting. To the best of our knowledge, this is the first result on ``original'' key recovery for HMAC (previous works only succeeded in recovering the equivalent keys). Interestingly, the number of attacked rounds is comparable with that for collision and preimage attacks on Whirlpool hash function itself. Lastly, we present a distinguishing-H attack against the full HMAC- and NMAC-Whirlpool.
Metadata
- Available format(s)
PDF- Category
- Secret-key cryptography
- Publication info
- Preprint.
- History
- 2015-02-27: last updated
- 2015-02-27: published
- Short URL
- https://ia.cr/2015/149
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2015/149,
author = {Jian Guo and Yu Sasaki and Lei Wang and Shuang Wu},
title = {Cryptanalysis of HMAC/NMAC-Whirlpool},
howpublished = {Cryptology {ePrint} Archive, Paper 2015/149},
year = {2015},
url = {https://eprint.iacr.org/2015/149}
}