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ID-Based One Round Authenticated Tripartite Key Agreement Protocol with Pairings
Authors: Fangguo Zhang, Shengli Liu, Kwangjo KimAbstract:
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.
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