Paper 2021/1331
Communicating Through Subliminal-Free Signatures
George Teseleanu
Abstract
By exploiting the inherent randomness used by certain digital signature protocols, subliminal channels can subvert these protocols without degrading their security. Due to their nature, these channels cannot be easily detected by an outside observer. Therefore, they pose a severe challenge for protocol designers. More precisely, designers consider certain assumptions implicitly, but in reality these assumptions turn out to be false or cannot be enforced or verified. In this paper we exemplify exactly such a situation by presenting several subliminal channels with a small capacity in Zhang et al. and Dong et al.'s subliminal-free signature protocols.
Metadata
- Available format(s)
-
PDF
- Category
- Cryptographic protocols
- Publication info
- Published elsewhere. NordSec 2021
- Keywords
- subliminal channelscuckoo's channelsfail-stop channelscovert communication
- Contact author(s)
- george teseleanu @ yahoo com
- History
- 2021-10-05: received
- Short URL
- https://ia.cr/2021/1331
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2021/1331,
author = {George Teseleanu},
title = {Communicating Through Subliminal-Free Signatures},
howpublished = {Cryptology ePrint Archive, Paper 2021/1331},
year = {2021},
note = {\url{https://eprint.iacr.org/2021/1331}},
url = {https://eprint.iacr.org/2021/1331}
}
