Paper 2022/1156
On the security of data markets: controlled Private Function Evaluation
Abstract
The income of companies working on data markets steadily grows year by year. Private function evaluation (PFE) is a valuable tool in solving corresponding security problems. The task of Controlled Private Function Evaluation (CPFE) and its relaxed version (rCPFE) was proposed in [11]. We define an ideal functionality for the latter task and present a UC-secure realization of the functionality against static malicious parties. The core primitive is functional encryption (FE) and essentially this determines the conditions of realizability. Accordingly, in the case of non-adaptive FE-setting secure realization of the ideal functionality is achievable in the standard model, otherwise, accessibility of random oracle is required.
Metadata
- Available format(s)
-
PDF
- Category
- Cryptographic protocols
- Publication info
- Preprint.
- Keywords
- private function evaluation functional encryption UC-security
- Contact author(s)
- vajda @ hit bme hu
- History
- 2022-10-19: revised
- 2022-09-05: received
- See all versions
- Short URL
- https://ia.cr/2022/1156
- License
-
CC0
BibTeX
@misc{cryptoeprint:2022/1156,
author = {István Vajda},
title = {On the security of data markets: controlled Private Function Evaluation},
howpublished = {Cryptology ePrint Archive, Paper 2022/1156},
year = {2022},
note = {\url{https://eprint.iacr.org/2022/1156}},
url = {https://eprint.iacr.org/2022/1156}
}
