Paper 2002/122

ID-Based One Round Authenticated Tripartite Key Agreement Protocol with Pairings

Fangguo Zhang, Shengli Liu, and Kwangjo Kim


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.

Available format(s)
Cryptographic protocols
Publication info
Published elsewhere. Unknown where it was published
Key agreementBilinear pairingsID-based cryptography
Contact author(s)
zhfg @ icu ac kr
2002-08-30: last of 2 revisions
2002-08-20: received
See all versions
Short URL
Creative Commons Attribution


      author = {Fangguo Zhang and Shengli Liu and Kwangjo Kim},
      title = {{ID}-Based One Round Authenticated Tripartite  Key Agreement Protocol with Pairings},
      howpublished = {Cryptology ePrint Archive, Paper 2002/122},
      year = {2002},
      note = {\url{}},
      url = {}
Note: In order to protect the privacy of readers, does not use cookies or embedded third party content.