Privacy-Preserving Blockchain-Based Systems for Car Sharing Leveraging Zero-Knowledge Protocols
Ivan Gudymenko, Asadullah Khalid, Hira Siddiqui, Mujtaba Idrees, Sebastian Clauß, André Luckow, Manuel Bolsinger, Daniel Miehle
Abstract
Blockchain-based systems open new opportunities for the IT business and society if designed and implemented properly. One of the essential challenges on their way to production readiness are severe privacy concerns and hence stringent compliance regulations. In this paper, we investigate how different privacy-preserving techniques leveraging zero-knowledge proof protocols and anonymous credentials can be used to tackle this issue on the example of a car sharing use case. Our approach considers a blockchain ecosystem enabling different parties including governmental authorities and automobile industry partners to cooperate ensuring end user privacy protection. The implemented proof-of-concept is leveraging Ethereum ZoKrates and Indy technologies respectively. This project is a joint initiative of T-Systems Multimedia Solutions GmbH and BMW Group.