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Perfect forward secure identity-based authenticated key agreement protocol in the escrow mode

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dc.contributor.authorWang, S.
dc.contributor.authorCao, Z.
dc.contributor.authorCheng, Z.
dc.contributor.authorChoo, K.K.R.
dc.date.issued2009
dc.description.abstractThere are several essential features in key agreement protocols such as key escrow (essential when con¯dentiality, audit trail and legal interception are required) and perfect forward secrecy (i.e., the security of a session key estab- lished between two or more entities is guaranteed even when the private keys of the entities are compromised). Majority of the existing escrowable identity-based key agreement protocols, however, only provide partial forward secrecy. Therefore, such protocols are unsuitable for real-word applications that require a stronger sense of forward secrecy | perfect forward secrecy. In this paper, we propose an e±cient perfect forward secure identity-based key agreement protocol in the escrow mode. We prove the security of our protocol in the random oracle model, assuming the intractability of the Gap Bilinear Di±e-Hellman (GBDH) problem. Security proofs are invaluable tools in assuring protocol implementers about the security properties of protocols. We note, however, that many existing security proofs of previously published identity-based protocols entail lengthy and compli- cated mathematical proofs. In this paper, our proof adopts a modular approach and, hence, simpler to follow.
dc.identifier.citationScience China Information Sciences, 2009; 52(8):1358-1370
dc.identifier.doi10.1007/s11432-009-0135-4
dc.identifier.issn1674-733X
dc.identifier.issn1862-2836
dc.identifier.urihttps://hdl.handle.net/1959.8/135021
dc.language.isoen
dc.publisherZhongguo Kexue Zazhishe, Science in China Press
dc.relation.fundingNational High-Tech Research & Development Program of China 2006AA01Z424
dc.relation.fundingNational Natural Science Foundation of China 60673079
dc.relation.fundingNational Natural Science Foundation of China 60773086
dc.relation.fundingNational Basic Research Program of China 2007CB311201
dc.rightsCopyright 2009 Science in China Press, published by Springer
dc.source.urihttps://doi.org/10.1007/s11432-009-0135-4
dc.subjectauthenticated key agreement
dc.subjectperfect forward secrecy
dc.subjectbilinear pairing
dc.subjectprovable security
dc.subjectmodular security proof
dc.titlePerfect forward secure identity-based authenticated key agreement protocol in the escrow mode
dc.typeJournal article
pubs.publication-statusPublished
ror.mmsid9915910904301831

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