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

Sheng Bao Wang, Zhenfu Cao, Zhao Hui Cheng, Kim-Kwang (Raymond) Choo

    Research output: Contribution to journalArticle


    The majority of existing escrowable identity-based key agreement protocols only provide partial forward secrecy. Such protocols are, arguably, not suitable for many real-word applications, as the latter tends to require a stronger sense of forward secrecy-perfect forward secrecy. In this paper, we propose an efficient 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 Diffie-Hellman (GBDH) problem.
    Original languageEnglish
    Pages (from-to)1358-1370
    JournalScience China Information Sciences
    Issue number8
    Publication statusPublished - 2009

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