Confidentiality-preserving, blockchain-based, and data sharing: A survey

Abstract

Data sharing has gained tremendous attention in the past few years. Information being the driving power of all strategic decision-making changes as organizations aim to improve their efficiency by sharing insights within departments and collaborating with partners. However, protecting the confidentiality of sensitive information is still one of the biggest challenges when sharing these valuable assets between differ partakers. Blockchain has been one of the technologies that are being explored to solve this problem. Blockchain technology had been renowned as a means of secure asset tracking, provide immutable transaction sharing and had been proven to limit the amount of trust collaborating parties needed to exchange sensitive data. In this paper, we hover the up-to-date, relevant techniques and propositions with regards to confidential data sharing using blockchain related approaches. We will provide a comprehensive comparison between different techniques based on the widely used frameworks and technical schemes summoned and cite the challenges blockchain based applications face in the realm of confidentiality preserving data sharing.