A Blockchain-driven Architecture for Usage Control in Solid

TL;DR

This paper proposes a blockchain-based architecture with trusted execution environments to enforce and monitor data usage policies in decentralized data sharing platforms like Solid, enhancing control, privacy, and security.

Contribution

It introduces a novel usage control architecture leveraging blockchain and trusted execution environments for decentralized data management.

Findings

Demonstrates workflows for data market scenarios.

Discusses privacy and security benefits.

Analyzes integration and cost considerations.

Abstract

Decentralization initiatives like Solid enable data owners to control who has access to their data and to stimulate innovation by creating both application and data markets. Once data owners share their data with others, though, it is no longer possible for them to control how their data are used. To address this issue, we propose a usage control architecture to monitor compliance with usage control policies. To this end, our solution relies on blockchain and trusted execution environments. We demonstrate the potential of the architecture by describing the various workflows needed to realize a motivating use case scenario for data markets. Additionally, we discuss the merits of the approach from privacy, security, integrateability, and affordability perspectives.