Paper 2004/127 Original: eprint.iacr.org/2004/127 ↗
DDH-based Group Key Agreement in a Mobile Environment
Abstract
A group key agreement protocol is designed to efficiently implement secure multicast channels for a group of parties communicating over an untrusted, open network by allowing them to agree on a common secret key. In the past decade many problems related to group key agreement have been tackled and solved (diminished if not solved), and recently some constant-round protocols have been proven secure in concrete, realistic setting. However, all forward-secure protocols so far are still too expensive for small mobile devices. In this paper we propose a new constant-round protocol well suited for a mobile environment and prove its security under the Decisional Diffie-Hellman assumption. The protocol meets simplicity, efficiency, and all the desired security properties.
Metadata
- Available format(s)
PDF- Category
- Cryptographic protocols
- Publication info
- Preprint.
- History
- 2004-12-08: last updated
- 2004-06-03: published
- Short URL
- https://ia.cr/2004/127
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2004/127,
author = {Junghyun Nam and Jinwoo Lee and Seungjoo Kim and Dongho Won},
title = {DDH-based Group Key Agreement in a Mobile Environment},
howpublished = {Cryptology {ePrint} Archive, Paper 2004/127},
year = {2004},
url = {https://eprint.iacr.org/2004/127}
}