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Journal of Computer Research and Development

Identity-Based Authenticated Key Agreement Protocols in the Standard Model

Yongjun Ren, Jiandong Wang, Jian Wang, Dazhuan Xu, Yi Zhuang

Published Sep 15, 2010• 0 citations
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The security of a provably secure identity-based authenticated key agreement protocol in the standard model was analyzed,and it was found that the protocol used in escrowless mode has security flaws.When the private key generator(PKG) is controlled or attacked,all of the session keys can be obtained.To resist this attack,the identity-based authenticated key agreement protocol was improved.This new protocol was proven to be secure in the standard model and has the property of not needing session key escrow.
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.