Paper 2019/365
Fully Secure Attribute-Based Encryption for
Rotem Tsabary
Abstract
Attribute-based Encryption (ABE), first introduced by [SW05,GPSW06], is a public key encryption system that can support multiple users with varying decryption permissions. One of the main properties of such schemes is the supported function class of policies. While there are fully secure constructions from bilinear maps for a fairly large class of policies, the situation with lattice-based constructions is less satisfactory and many efforts were made to close this gap. Prior to this work the only known fully secure lattice construction was for the class of point functions (also known as IBE).
In this work we construct for the first time a lattice-based (ciphertext-policy) ABE scheme for the function class
Metadata
- Available format(s)
-
PDF
- Category
- Public-key cryptography
- Publication info
- Preprint. MINOR revision.
- Keywords
- attribute-based encryptionABEciphertext policyfull securityadaptive securityconstrained PRFlattice techniquesLWE
- Contact author(s)
- rotem tsabary @ weizmann ac il
- History
- 2019-06-02: last of 2 revisions
- 2019-04-10: received
- See all versions
- Short URL
- https://ia.cr/2019/365
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2019/365,
author = {Rotem Tsabary},
title = {Fully Secure Attribute-Based Encryption for $t$-{CNF} from {LWE}},
howpublished = {Cryptology {ePrint} Archive, Paper 2019/365},
year = {2019},
url = {https://eprint.iacr.org/2019/365}
}
