H.O.P.E Project

The project shows how the chosen protocol could be done in order to exchange data withouth making both the client and the server aware of actual car flag vector values nor speed function explicit formula. For the random initial car array, the two parts generate a random array each one, then it is encrypted locally with the same Paillier Cryptosystem Key. Client & Server do not have the corresponding private key. The two random encrypted arrays are then matemathically combined, in order to take advantage of the homomorphic property of Paillier Cryptosystem, obtaining one common initial vector for the user car, without being able to get back to the explicit values.