University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Modeling Leakage of Ephemeral Secrets in Tripartite/Group Key Exchange

Manulis, M, Suzuki, K and Ustaoglu, B (2009) Modeling Leakage of Ephemeral Secrets in Tripartite/Group Key Exchange In: 12th International Conference on Information, Security, and Cryptology (ICISC 2009), 2009-12-02 - 2009-12-04, Seoul, Korea.

[img]
Preview
PDF
MaSuUs_ICISC09.pdf
Available under License : See the attached licence file.

Download (795kB)
[img]
Preview
PDF (licence)
SRI_deposit_agreement.pdf

Download (33kB)

Abstract

Recent advances in the design and analysis of secure two-party key exchange (2KE) such as the leakage of ephemeral secrets used during the attacked sessions remained unnoticed by the current models for group key exchange (GKE). Focusing on a special case of GKE — the tripartite key exchange (3KE) — that allows for efficient one-round protocols, we demonstrate how to incorporate these advances to the multi-party setting. From this perspective our work closes the most pronounced gap between provably secure 2KE and GKE protocols. The proposed 3KE protocol is an implicitly authenticated protocol with one communication round which remains secure even in the event of ephemeral secret leakage. It also significantly improves upon currently known 3KE protocols, many of which are insecure. An optional key confirmation round can be added to our proposal to achieve the explicitly authenticated protocol variant

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Computing Science
Authors :
AuthorsEmailORCID
Manulis, MUNSPECIFIEDUNSPECIFIED
Suzuki, KUNSPECIFIEDUNSPECIFIED
Ustaoglu, BUNSPECIFIEDUNSPECIFIED
Date : 2009
Identification Number : 10.1007/978-3-642-14423-3_2
Contributors :
ContributionNameEmailORCID
PublisherSpringer, UNSPECIFIEDUNSPECIFIED
Additional Information : The original publication is available at http://www.springerlink.com
Depositing User : Symplectic Elements
Date Deposited : 11 Jun 2013 16:07
Last Modified : 09 Jun 2014 13:32
URI: http://epubs.surrey.ac.uk/id/eprint/755198

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800