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
Creative Commons Attribution
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}
}
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