Private and Verifiable Storage of User Vehicles’ Privacy Settings through Decentralisation

Processing personal data and finding effective storage instruments requires certain security and privacy properties must be guaranteed. There is no exception in the automotive realm where various services are involved and potentially sensitive information is at risk. The privacy preferences the users set across these services can reveal their personal traits and may not always be honoured by service providers. Thus, the user should have access to a system that enables them to concurrently store their preferences and legally demonstrate that they have made specific choices, thereby discouraging service providers from the improper enforcement of data processing. Simultaneously, it is crucial to distinguish a user’s true identity from their choices, to prevent direct inferences. In this contribution, we investigate the problem of preserving users’ privacy preferences set aboard modern vehicles, by guaranteeing the security and privacy properties of pseudonymity, public verifiability, and integrity. The proposed design is partially built on the Hyperledger Fabric blockchain.