Cryptology ePrint Archive: Report 2002/122
ID-Based One Round Authenticated Tripartite Key Agreement Protocol with Pairings
Fangguo Zhang, Shengli Liu and Kwangjo Kim
Abstract: With positive applications of Weil pairing (Tate pairing) to
cryptography, ID-based encryption schemes, digital signature
schemes, blind signature scheme, two-party authenticated key
agreement schemes, and tripartite key agreement scheme were
proposed recently, all of them using bilinear pairing (Weil or
Tate pairing). In this paper, we propose an ID-based one round
authenticated tripartite key agreement protocol. The authenticity
of the protocol is assured by a special signature scheme, so that
messages carrying the information of two ephemeral keys can be
broadcasted authentically by an entity. Consequently, one instance
of our protocol results in eight session keys for the three
entities. Security attributes of our protocol are presented,
and the computational overhead and bandwidth of the broadcast messages are analyzed as well.
Category / Keywords: cryptographic protocols / Key agreement, Bilinear pairings, ID-based cryptography
Date: received 19 Aug 2002, last revised 30 Aug 2002
Contact author: zhfg at icu ac kr
Available format(s): Postscript (PS) | Compressed Postscript (PS.GZ) | PDF | BibTeX Citation
Version: 20020830:085859 (All versions of this report)
Short URL: ia.cr/2002/122
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