Paper 2008/245
Cryptanalysis of an Authentication Scheme Using Truncated Polynomials
Markus Grassl and Rainer Steinwandt
Abstract
An attack on a recently proposed authentication scheme of Shpilrain and Ushakov is presented. The public information allows the derivation of a system of polynomial equations for the secret key bits. Our attack uses simple elimination techniques to distill linear equations. For the proposed parameter choice, the attack often finds secret keys or alternative secret keys within minutes with moderate resources.
Metadata
- Available format(s)
-
PDF PS
- Category
- Public-key cryptography
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- cryptanalysisauthentication schememultivariate polynomials
- Contact author(s)
- rsteinwa @ fau edu
- History
- 2008-06-03: received
- Short URL
- https://ia.cr/2008/245
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2008/245,
author = {Markus Grassl and Rainer Steinwandt},
title = {Cryptanalysis of an Authentication Scheme Using Truncated Polynomials},
howpublished = {Cryptology {ePrint} Archive, Paper 2008/245},
year = {2008},
url = {https://eprint.iacr.org/2008/245}
}