Utilizing postponed ephemeral and pseudo-static keys in tripartite and identity-based key agreement protocols

Atsushi Fujioka; Koutarou Suzuki; Berkant Ustaoglu

Paper 2009/423

Utilizing postponed ephemeral and pseudo-static keys in tripartite and identity-based key agreement protocols

Atsushi Fujioka, Koutarou Suzuki, and Berkant Ustaoglu

Abstract

We propose an new one-round implicitly authenticated three-party protocol that extends Joux's protocol as well as a two-party identity-based protocol. Our protocols have a single communication round that consists of ephemeral (one-time) public keys along with certificates in the tripartite protocol, and identities in the identity-based setting. As such our protocols are communication efficient and furthermore do not require enhanced message format.

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Published elsewhere. Unknown where it was published
Keywords: postponed ephemeral keys pseudo-static keys tripartite key agreement identity based key agreement
Contact author(s): bustaoglu @ cryptolounge net
History: 2009-09-01: received
Short URL: https://ia.cr/2009/423
License: CC BY

BibTeX

@misc{cryptoeprint:2009/423,
      author = {Atsushi Fujioka and Koutarou Suzuki and Berkant Ustaoglu},
      title = {Utilizing postponed ephemeral and pseudo-static keys in tripartite and identity-based key agreement protocols},
      howpublished = {Cryptology {ePrint} Archive, Paper 2009/423},
      year = {2009},
      url = {https://eprint.iacr.org/2009/423}
}