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ISW
2007
Springer

Strongly-Secure Identity-Based Key Agreement and Anonymous Extension

13 years 9 months ago
Strongly-Secure Identity-Based Key Agreement and Anonymous Extension
Abstract. We study the provable security of identity-based (ID-based) key agreement protocols. Although several published protocols have been proven secure in the random oracle model, only a weak adversarial model is considered – the adversary is not allowed to ask Session-Key Reveal queries that will allow the adversary to learn previously established session keys. Recent research efforts devoted to providing a stronger level of security require strong assumptions, such as assuming that the simulator has access to a non-existential computational or decisional oracle. In this work, we propose an ID-based key agreement protocol and prove its security in the widely accepted indistinguishability-based model of Canetti and Krawczyk. In our proof, the simulator does not require access to any non-existential computational or decisional oracle. We then extend our basic protocol to support ad-hoc anonymous key agreement with bilateral privacy. To the best of our knowledge, this is the firs...
Sherman S. M. Chow, Kim-Kwang Raymond Choo
Added 08 Jun 2010
Updated 08 Jun 2010
Type Conference
Year 2007
Where ISW
Authors Sherman S. M. Chow, Kim-Kwang Raymond Choo
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