Paper 2017/953
Threshold Kleptographic Attacks on Discrete Logarithm Based Signatures
George Teseleanu
Abstract
In an $\ell$ out of $n$ threshold scheme, $\ell$ out of $n$ members must cooperate to recover a secret. A kleptographic attack is a backdoor which can be implemented in an algorithm and further used to retrieve a user's secret key. We combine the notions of threshold scheme and kleptographic attack to construct the first $\ell$ out of $n$ threshold kleptographic attack on discrete logarithm based digital signatures and prove its security in the standard and random oracle models.
Metadata
- Available format(s)
-
PDF
- Publication info
- Published elsewhere. Major revision. Latincrypt 2017
- Keywords
- public-key cryptographykleptographythreshold cryptographyinformation hiddingSETUP attacks
- Contact author(s)
- george teseleanu @ yahoo com
- History
- 2022-03-15: last of 3 revisions
- 2017-09-27: received
- See all versions
- Short URL
- https://ia.cr/2017/953
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2017/953,
author = {George Teseleanu},
title = {Threshold Kleptographic Attacks on Discrete Logarithm Based Signatures},
howpublished = {Cryptology {ePrint} Archive, Paper 2017/953},
year = {2017},
url = {https://eprint.iacr.org/2017/953}
}
