[Resource Topic] 2009/423: Utilizing postponed ephemeral and pseudo-static keys in tripartite and identity-based key agreement protocols

Welcome to the resource topic for 2009/423

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

Authors: Atsushi Fujioka, Koutarou Suzuki, 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.

ePrint: https://eprint.iacr.org/2009/423

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