Paper 2022/1263 Original: eprint.iacr.org/2022/1263 ↗
Steganography-Free Zero-Knowledge
Abstract
We revisit the well-studied problem of preventing steganographic communication in multi-party communications. While this is known to be a provably impossible task, we propose a new model that allows circumventing this impossibility. In our model, the parties first publish a single message during an honest non-interactive pre-processing phase and then later interact in an execution phase. We show that in this model, it is indeed possible to prevent any steganographic communication in zero-knowledge protocols. Our solutions rely on standard cryptographic assumptions.
Metadata
- Available format(s)
PDF- Category
- Cryptographic protocols
- Publication info
- Preprint.
- History
- 2022-09-23: last updated
- 2022-09-23: published
- Short URL
- https://ia.cr/2022/1263
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2022/1263,
author = {Behzad Abdolmaleki and Nils Fleischhacker and Vipul Goyal and Abhishek Jain and Giulio Malavolta},
title = {Steganography-Free Zero-Knowledge},
howpublished = {Cryptology {ePrint} Archive, Paper 2022/1263},
year = {2022},
url = {https://eprint.iacr.org/2022/1263}
}