Modeling Leakage of Ephemeral Secrets in Tripartite/Group Key Exchange

Modeling Leakage of Ephemeral Secrets in Tripartite/Group Key Exchange

We propose a security model, referred as g-eCK model, for group key exchange that captures essentially all non-trivial leakage of static and ephemeral secret keys of participants, i.e., group key exchange version of extended Canetti-Krawczyk (eCK) model. Moreover, we propose the first one-round trip...

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Veröffentlicht in:IEICE transactions on fundamentals of electronics, communications and computer sciences communications and computer sciences, 2013-01, Vol.E96.A (1)
Hauptverfasser: MANULIS, Mark, SUZUKI, Koutarou, USTAOGLU, Berkant
Format: Artikel
Sprache:jpn
Schlagworte:
Computer information security
Computer simulation
Electronics
Keys
Leakage
Mathematical models
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Zusammenfassung:We propose a security model, referred as g-eCK model, for group key exchange that captures essentially all non-trivial leakage of static and ephemeral secret keys of participants, i.e., group key exchange version of extended Canetti-Krawczyk (eCK) model. Moreover, we propose the first one-round tripartite key exchange (3KE) protocol secure in the g-eCK model under the gap Bilinear Diffie-Hellman (gap BDH) assumption and in the random oracle model.
ISSN:0916-8508
1745-1337