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.
Original language | English |
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Pages (from-to) | 73-83 |
Number of pages | 11 |
Journal | Journal of Systems and Software |
Volume | 78 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2005 Oct |
Externally published | Yes |
Keywords
- DDH assumption
- Group key agreement
- Mobile device
- Multicast
ASJC Scopus subject areas
- Software
- Information Systems
- Hardware and Architecture