Method for securely registering a removable electrical device when installing it within an electrical system

A method for securely registering a removable electrical device when installing it within an electrical system in order to replace a faulty removable electrical device, wherein the method comprises the steps of:

• a) after the installation of a new removable electrical device within an electrical system in order to replace a faulty removable electrical device of this electrical system, acquiring automatically, with an electronic control module of the electrical system, a first security certificate for the new removable electrical device, stored in a computer memory of an embedded electronic computer of the new removable electrical device, said first certificate being signed by an authority known to the system;
• b) verifying the authenticity of the first acquired security certificate, said verification being carried out by the electronic control module;
• c) generating a second security certificate for the new removable electrical device, said second security certificate including a key generated by the electronic computer of the new removable electrical device;
• d) obtaining a signature for the second security certificate from a trusted certification authority, the new removable electrical device then being registered within the electrical system only if said signature is obtained.