Paper 2019/966
Fast, Compact, and Expressive Attribute-Based Encryption
Junichi Tomida, Yuto Kawahara, and Ryo Nishimaki
Abstract
Attribute-based encryption (ABE) is an advanced cryptographic tool and useful to build various types of access control systems. Toward the goal of making ABE more practical, we propose key-policy (KP) and ciphertext-policy (CP) ABE schemes, which first support unbounded sizes of attribute sets and policies with negation and multi-use of attributes, allow fast decryption, and are fully secure under a standard assumption, simultaneously. The proposed schemes are more expressive than previous schemes and efficient enough. We also implement our schemes in 128-bit security level and present their benchmarks for an ordinary personal computer and smartphones. They show that all algorithms run in one second with the personal computer when they handle any policy or attribute set with one hundred attributes.
Note: fix some terminology
Metadata
- Available format(s)
-
PDF
- Category
- Public-key cryptography
- Publication info
- A major revision of an IACR publication in PKC 2020
- Keywords
- attribute-based encryptionstandard assumptionnon-monotoneunboundedmulti-userandom oracle model
- Contact author(s)
- junichi tomida vw @ hco ntt co jp
- History
- 2020-02-12: last of 2 revisions
- 2019-08-26: received
- See all versions
- Short URL
- https://ia.cr/2019/966
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2019/966,
author = {Junichi Tomida and Yuto Kawahara and Ryo Nishimaki},
title = {Fast, Compact, and Expressive Attribute-Based Encryption},
howpublished = {Cryptology ePrint Archive, Paper 2019/966},
year = {2019},
note = {\url{https://eprint.iacr.org/2019/966}},
url = {https://eprint.iacr.org/2019/966}
}
