ID-Based Group Password-Authenticated Key Exchange

Full text for this resource is not available from the Research Repository.

Yi, Xun, Tso, Raylin and Okamoto, Eiji (2009) ID-Based Group Password-Authenticated Key Exchange. Lecture Notes in Computer Science, 5824. pp. 192-211. ISSN 0302-9743


Password-authenticated key exchange (PAKE) protocols are designed to be secure even when the secret key used for authentication is a human-memorable password. In this paper, we consider PAKE protocols in the group scenario, in which a group of clients, each of them shares his password with an “honest but curious” server, intend to establish a common secret key (i.e., a group key) with the help of the server. In this setting, the key established is known to the clients only and no one else, including the server. Each client needs to remember the password only while the server keeps passwords in addition to private keys related to its identity. Towards our goal, we present a compiler that transforms any group key exchange (KE) protocol which is secure against a passive eavesdropping to a group PAKE which is secure against an active adversary who controls all communications in the network. This compiler is built on a group KE protocol, an identity-based encryption (IBE) scheme, and an identity-based signature (IBS) scheme. It adds only two rounds and O(1) communication (per client) to the original group KE protocol. As long as the underlying group KE protocol, IBE scheme and an IBS scheme have provable security without random oracles, the group PAKE constructed by our compiler can be proven to be secure without random oracles.

Dimensions Badge

Altmetric Badge

Item type Article
DOI 10.1007/978-3-642-04846-3_13
Official URL
Subjects Historical > FOR Classification > 0804 Data Format
Historical > FOR Classification > 0806 Information Systems
Historical > Faculty/School/Research Centre/Department > School of Engineering and Science
Keywords ResPubID19236, password-authenticated key exchange, group key agreement, protocol compiler, common reference model
Citations in Scopus 10 - View on Scopus
Download/View statistics View download statistics for this item

Search Google Scholar

Repository staff login