Paper 2022/1156 Original: eprint.iacr.org/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.
- History
- 2022-10-19: last updated
- 2022-09-05: published
- Short URL
- https://ia.cr/2022/1156
- License
- https://creativecommons.org/publicdomain/zero/1.0/
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},
url = {https://eprint.iacr.org/2022/1156}
}