Abstract
Key agreement protocols are essential for secure communications. In this paper, to solve the inherent key escrow problem of identity-based cryptography, an escrow-free certificate-based authenticated key agreement (CB-AK) protocol with perfect forward secrecy is proposed. Our protocol makes use of pairings on elliptic curves. The protocol is described and its properties are discussed though comparison with Smart’s protocol.
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Foundation item: Supported by the National Natural Science Foundation of China (60225007, 60572155) and the Science and Technology Research Project of Shanghai (04DZ07067)
Biography: WANG Shengbao (1978–), male, Ph.D. candidate, research direction: applied cryptography, network security.
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Wang, S., Cao, Z. Escrow-free certificate-based authenticated key agreement protocol from pairings. Wuhan Univ. J. of Nat. Sci. 12, 63–66 (2007). https://doi.org/10.1007/s11859-006-0189-8
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DOI: https://doi.org/10.1007/s11859-006-0189-8
Key words
- authenticated key agreement (AK)
- certificate-based encryption (CBE)
- pairings
- session key escrow
- perfect forward security