Paper 2008/467
Cryptanalysis of EnRUPT
Dmitry Khovratovich and Ivica Nikolic
Abstract
In this paper we present a preimage attack on EnRUPT-512. We exploit the fact that the internal state is only a little bit larger than the critical security level: 1152 bits against 1024 bits. The absence of a message expansion and a fairly simple compression function allow us to fix the values for some state words and thus reduce the size of birthday state space in the meet-in-the-middle attack under 1024 bits. Equations that arise through the analysis are solved using look-up tables. The complexity of the attack is around 2^{480} compression function calls and the memory requirement is around 2^{384}.
Metadata
- Available format(s)
-
PDF
- Category
- Secret-key cryptography
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- hash functionscryptanalysissha-3
- Contact author(s)
-
khovratovich @ gmail com
dmitry khovratovich @ uni lu - History
- 2008-11-18: received
- Short URL
- https://ia.cr/2008/467
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2008/467,
author = {Dmitry Khovratovich and Ivica Nikolic},
title = {Cryptanalysis of {EnRUPT}},
howpublished = {Cryptology {ePrint} Archive, Paper 2008/467},
year = {2008},
url = {https://eprint.iacr.org/2008/467}
}
