Private routing and ride-sharing using homomorphic encryption
AuthorFarokhi, F; Shames, I; Johansson, KH
Source TitleIET Cyber-Physical Systems
PublisherInstitution of Engineering and Technology (IET)
AffiliationElectrical and Electronic Engineering
Document TypeJournal Article
CitationsFarokhi, F., Shames, I. & Johansson, K. H. (2020). Private routing and ride-sharing using homomorphic encryption. IET Cyber-Physical Systems: Theory & Applications, 5 (4), https://doi.org/10.1049/iet-cps.2019.0042.
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A framework for private and secure communication and interaction between agents interacting in transportation services is developed. An agent, i.e. a user, can ask questions or submit queries regarding whether the other agents, i.e. drivers, use the desired road at specific times of the day in an encrypted fashion. The authors developed the framework using semi-homomorphic encryption (namely, the Paillier's encryption method) to enable the algebraic manipulation of plain data without the need for decryption using appropriate computations over the encrypted data. Strong privacy and security guarantees are proved for the agents. Subsequently, the semi-homomorphic encryption method is utilised to develop privacy-aware ride-sharing and routing algorithms without the need for disclosing the origin and destination of the user.
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