Paper 2020/713
A Generic Construction of Predicate Proxy Key Re-encapsulation Mechanism
Yi-Fan Tseng, Zi-Yuan Liu, and Raylin Tso
Abstract
Proxy re-encryption (PRE), formalized by Blaze et al. in 1998, allows a proxy entity to delegate the decryption right of a ciphertext from one party to another without obtaining the information of the plaintext. In recent years, many studies have explored how to construct PRE schemes that support fine-grained access control for complex application scenarios, such as identity-based PRE and attribute-based PRE. Besides, in order to achieve more flexible access control, the predicate proxy re-encryption (PPRE) is further studied. However, existing PPRE is restricted with the inner product predicate function. Therefore, how to realize the PPRE of arbitrary predicate function is still a problem to be solved. In this manuscript, we propose a secure generic construction of predicate proxy key re-encapsulation mechanism built from a ``linear'' predicate key encapsulation mechanism. Since the secure key encapsulation mechanism can be used as a building block to construct public key encryption, we can obtain a PPRE from our construction. As a result, the results open up new avenues for building more flexible and fine-grained PPRE.
Metadata
- Available format(s)
-
PDF
- Category
- Public-key cryptography
- Publication info
- Published elsewhere. Major revision. AsiaJCIS 2020
- Keywords
- Predicate encryptionPredicate proxy re-encryptionGeneric constructionSingle-hopUnidirectional
- Contact author(s)
- zyliu @ cs nccu edu tw
- History
- 2020-06-14: received
- Short URL
- https://ia.cr/2020/713
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2020/713,
author = {Yi-Fan Tseng and Zi-Yuan Liu and Raylin Tso},
title = {A Generic Construction of Predicate Proxy Key Re-encapsulation Mechanism},
howpublished = {Cryptology {ePrint} Archive, Paper 2020/713},
year = {2020},
url = {https://eprint.iacr.org/2020/713}
}
