Patent ID: 11902270
Assignee: ORANGE
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A source device intended to enter into communication with a destination device through a circuit comprising at least one relay and belonging to a computer network comprising at least one shared memory, the source device comprising one processor configured to implement a communications capability retrieving identifiers of the relays comprised in the circuit and sending a request for generating a proof of use, called a PoU frame, addressed to the destination device, the PoU frame being intended to retrieve, on passage through each of the at least one relay, a signature made from a challenge and a key proper to each of the relays, the PoU frame comprising a value of the challenge used by each of the at least one relay to compute the signatures, a verifying capability configured to authenticate the signatures retrieved in using the public keys of each of the at least one relay of the circuit, the authentication of the signatures by the verifying capability triggering a sending, by the communications capability, of transaction frames addressed to each of the at least one relay identified in the circuit, the transaction frames comprising at least the signatures contained in the PoU frame and triggering, during reception of the transaction frames by each of the at least one relay, a sending of a request for recording a proof of use to a shared memory.