Paper 2015/320
Hybrid Publicly Verifiable Computation
James Alderman, Christian Janson, Carlos Cid, and Jason Crampton
Abstract
Publicly Verifiable Outsourced Computation (PVC) allows weak devices to delegate computations to more powerful servers, and to verify the correctness of results. Delegation and verification rely only on public parameters, and thus PVC lends itself to large multi-user systems where entities need not be registered. In such settings, individual user requirements may be diverse and cannot be realised with current PVC solutions. In this paper, we introduce Hybrid PVC (HPVC) which, with a single setup stage, provides a flexible solution to outsourced computation supporting multiple modes: (i) standard PVC, (ii) PVC with cryptographically enforced access control policies restricting the servers that may perform a given computation, and (iii) a reversed model of PVC which we call Verifiable Delegable Computation (VDC) where data is held remotely by servers. Entities may dynamically play the role of delegators or servers as required.
Metadata
- Available format(s)
-
PDF
- Category
- Cryptographic protocols
- Publication info
- Published elsewhere. Major revision. Topics in Cryptology - CT-RSA 2016
- DOI
- 10.1007/978-3-319-29485-8_9
- Keywords
- Publicly Verifiable ComputationOutsourced ComputationDual-Policy Attribute-based EncryptionRevocationAccess Control
- Contact author(s)
- Christian Janson 2012 @ live rhul ac uk
- History
- 2018-02-12: last of 2 revisions
- 2015-04-11: received
- See all versions
- Short URL
- https://ia.cr/2015/320
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2015/320,
author = {James Alderman and Christian Janson and Carlos Cid and Jason Crampton},
title = {Hybrid Publicly Verifiable Computation},
howpublished = {Cryptology {ePrint} Archive, Paper 2015/320},
year = {2015},
doi = {10.1007/978-3-319-29485-8_9},
url = {https://eprint.iacr.org/2015/320}
}
