Paper 2025/301
Making Protocol FSU Revocable
, Kanagawa UniversityAbstract
This paper examines whether a revocation function can be added to a protocol, protocol FSU, which is an asymmetric pairing variant of a protocol that has been adopted as an international standard, ISO/IEC11770-3. Protocol FSU is an identity-based authenticated-key exchange protocol based on a mathematical problem, an asymmetric gap bilinear Diffie--Hellman (GBDH) problem. To make protocol FSU revocable, a generic technique is applied, which converts an identity-based encryption scheme to a revocable identity-based encryption scheme by introducing a symmetric-key encryption scheme. In addition, to make the converted revocable identity-based authenticated-key exchange protocol efficient, we reduce ephemeral information exchanged in the protocol, and introduce an additional parameter to the master public-key where the secret information of the additional parameter is not needed to include in the master secret-key. We discuss the security of the resultant protocol, and prove that it is rid-eCK secure under the asymmetric GBDH assumption.
Metadata
- Available format(s)
-
PDF
- Category
- Cryptographic protocols
- Publication info
- Preprint.
- Keywords
- identity-based cryptographyauthenticated key exchangerevocabilityasymmetric GBDH assumptionprotocol FSU
- Contact author(s)
-
r202470194te @ jindai jp
fujioka @ jindai jp
akira nagai @ ntt com
kan yasuda @ ntt com - History
- 2025-03-25: last of 2 revisions
- 2025-02-20: received
- See all versions
- Short URL
- https://ia.cr/2025/301
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2025/301,
author = {Kazuma Wariki and Atsushi Fujioka and Akira Nagai and Kan Yasuda},
title = {Making Protocol {FSU} Revocable},
howpublished = {Cryptology {ePrint} Archive, Paper 2025/301},
year = {2025},
url = {https://eprint.iacr.org/2025/301}
}
