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Lecture notes in computer science

Identity-Based Key Agreement Protocols in a Multiple PKG Environment

Hoonjung Lee, Donghyun Kim, Sangjin Kim, Heekuck Oh

Published Jan 1, 2005• 18 citations
Publisher
DOI
10.1007/11424925_92

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Pla Information

Most available identity-based authenticated key agreement protocols require that both protocol participants are from the same PKG(Private Key Generator) environment.However,safe communication is requisite between protocol participants that are from different PKG environment in practice.In this paper,a new identity-based AKA(Authenticated Key Agreement) protocol is proposed in multiple PKG environment,which makes use of a new technique called twin Diffie-Hellman problem.Moreover,the security of the proposed protocol can be reduced to the standard CDH and BDH assumption in the eCK model,which makes use of the trapdoor test technology proposed by Cash et al in Eurocrypt 2008.

JOURNAL OF ELECTRONICS INFORMATION TECHNOLOGY•Jan 1, 2010•1 citation
Most available identity-based authenticated key agreement protocols require that both protocol participants are from the same PKG environment, which are unfit for roaming between different domains and the asymmetric computational environment in heterogeneous integrated network. So it is quite needed to propose identity-based authenticated key agreement protocol in multiple PKG environments. This paper presents an identity-based authenticated key agreement protocol in multiple PKG environments in standard model, which is an improved version of recent proposed protocol. The intruder's ability is improved to issue one PKG's master private key in ID-BJM model for multiple PKG environments. The new protocol is proved secure in improved ID-BJM model.
Most available identity-based authenticated key agreement protocols require that both protocol participants are from the same PKG(Private Key Generator) environment.However,safe communication is requisite between protocol participants that are from different PKG environment in practice.In this paper,a new identity-based AKA(Authenticated Key Agreement) protocol is proposed in multiple PKG environment,which makes use of a new technique called twin Diffie-Hellman problem.Moreover,the security of the proposed protocol can be reduced to the standard CDH and BDH assumption in the eCK model,which makes use of the trapdoor test technology proposed by Cash et al in Eurocrypt 2008.