Blockchain-Based Decentralized Identity (DID) with Privacy Preservation

Abstract

The idea of Decentralized Identity (DID) systems has emerged as a ground-breaking paradigm enabling to offer secure user-centered administration of digital identities. However, the existing DID implementations have been linked with the issue of privacy maintenance, scalability, and interoperability with legacy systems. The proposed research paper proposes a blockchain-based DID system that has privacy-protective properties such as zero-knowledge proofs and selective disclosure mechanisms to ensure secure identity verification without revealing the identity of a user. The proposed system capitalises on a permissioned blockchain to enhance the performance of transaction throughput and leverages on verifiable credentials to facilitate cross platform interoperability. It was experimentally validated as a solution with superior privacy compliance and reduced verification latency than conventional centralized identity management solutions. This paper makes a contribution towards the design of decentralized identity infrastructures by completing the significant trade off between trust, privacy and usability [2[4].