Abstract
Ubiquity of connected devices ranging from cellphones to in-vehicle navigation systems has enabled information rich routing and navigation services. Eco-routing utilizes these infrastructure and data about the routes to ascertain and inform the driver the energy cost of traversing a route to their destination. An accurate energy consumption model of the vehicle traversing the route is essential to perform eco-routing effectively. Unfortunately, very accurate energy consumption models also contain operating strategies that their owners are disinclined to disclose publicly. We propose the use of partially homomorphic cryptosystem for private function evaluations to enable secure eco-routing. A novel way to encrypt the energy consumption model to enable secure eco-routing, methods for private evaluation of the encrypted energy consumption model, and the associated protocol are described. Practical considerations for implementing such a system are explored through software implementation.
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