Paper 2021/1647 Original: eprint.iacr.org/2021/1647 ↗
Privacy-Preserving Authenticated Key Exchange for Constrained Devices
Abstract
In this paper we investigate the field of privacy-preserving authenticated key exchange protocols (PPAKE). First we make a cryptographic analysis of a previous PPAKE protocol. We show that most of its security properties, including privacy, are broken, despite the security proofs that are provided. Then we describe a strong security model which captures the security properties of a PPAKE: entity authentication, key indistinguishability, forward secrecy, and privacy. Finally, we present a PPAKE protocol in the symmetric-key setting which is suitable for constrained devices. We formally prove the security of this protocol in our model.
Metadata
- Available format(s)
PDF- Category
- Cryptographic protocols
- Publication info
- Preprint.
- History
- 2021-12-17: last updated
- 2021-12-17: published
- Short URL
- https://ia.cr/2021/1647
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2021/1647,
author = {Loïc Ferreira},
title = {Privacy-Preserving Authenticated Key Exchange for Constrained Devices},
howpublished = {Cryptology {ePrint} Archive, Paper 2021/1647},
year = {2021},
url = {https://eprint.iacr.org/2021/1647}
}