WibsonTree: Efficiently Preserving Seller's Privacy in a Decentralized Data Marketplace

• URL: http://arxiv.org/abs/2002.03810v1
• Date: Mon, 10 Feb 2020 14:39:16 GMT
• Title: WibsonTree: Efficiently Preserving Seller's Privacy in a Decentralized Data Marketplace
• Authors: Ariel Futoransky, Carlos Sarraute, Ariel Waissbein, Matias Travizano, Daniel Fernandez
• Abstract summary: WibsonTree is a cryptographic primitive designed to preserve users' privacy. It enables the exchange of private information while preserving the seller's privacy.
• Score: 0.40777876591043144
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: We present a cryptographic primitive called WibsonTree designed to preserve users' privacy by allowing them to demonstrate predicates on their personal attributes, without revealing the values of those attributes. We suppose that there are three types of agents --buyers, sellers and notaries-- who interact in a decentralized privacy-preserving data marketplace (dPDM) such as the Wibson marketplace. We introduce the WibsonTree protocol as an efficient cryptographic primitive that enables the exchange of private information while preserving the seller's privacy. Using our primitive, a data seller can efficiently prove that he/she belongs to the target audience of a buyer's data request, without revealing any additional information.

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