Paper 2015/098
Adaptive-ID Secure Revocable Identity-Based Encryption from Lattices via Subset Difference Method
Shantian Cheng and Juanyang Zhang
Abstract
In view of the expiration or reveal of user's private credential (or private key) in a realistic scenario, identity-based encryption (IBE) schemes with an efficient key revocation mechanism, or for short, revocable identity-based encryption (RIBE) schemes, become prominently significant. In this paper, we present an RIBE scheme from lattices by combining two Agrawal et al.'s IBE schemes with the subset difference (SD) method. Our scheme is secure against adaptive identity-time attacks in the standard model under the learning with errors (LWE) assumption. In particular, our scheme serves as one solution to the challenge posed by Chen et al.(ACISP '12).
Note: This is the full version of a paper due to appear at the 11th International Conference on Information Security Practice and Experience (ISPEC 2015).
Metadata
- Available format(s)
-
PDF
- Category
- Public-key cryptography
- Publication info
- Published elsewhere. Major revision. The 11th International Conference on Information Security Practice and Experience (ISPEC 2015)
- Keywords
- Revocable identity-based encryptionLattice techniquesSubset difference methodAdaptive securityStandard model
- Contact author(s)
- scheng002 @ ntu edu sg
- History
- 2015-02-23: received
- Short URL
- https://ia.cr/2015/098
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2015/098,
author = {Shantian Cheng and Juanyang Zhang},
title = {Adaptive-ID Secure Revocable Identity-Based Encryption from Lattices via Subset Difference Method},
howpublished = {Cryptology ePrint Archive, Paper 2015/098},
year = {2015},
note = {\url{https://eprint.iacr.org/2015/098}},
url = {https://eprint.iacr.org/2015/098}
}
