Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/4775
Title: Modeling leakage of ephemeral secrets in tripartite/group key exchange
Authors: Manulis, Mark
Suzuki, Koutarou
Ustaoğlu, Berkant
Ustaoğlu, Berkant
Izmir Institute of Technology. Mathematics
Keywords: Network protocols
Communication rounds
Cryptography
Group key exchange
Provably secure
Issue Date: 2010
Publisher: Springer Verlag
Source: Manulis, M., Suzuki, K., and Ustaoğlu, B. (2010). Modeling leakage of ephemeral secrets in tripartite/group key exchange. Lecture Notes in Computer Science, 5984 LNCS, 16-33. doi:10.1007/978-3-642-14423-3_2
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. © 2010 Springer-Verlag.
Description: 12th International Conference on Information Security and Cryptology, ICISC 2009; Seoul; South Korea; 2 December 2009 through 4 December 2009
URI: http://doi.org/10.1007/978-3-642-14423-3_2
http://hdl.handle.net/11147/4775
ISBN: 9783642144226
ISSN: 0302-9743
1611-3349
Appears in Collections:Mathematics / Matematik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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