Patent ID: 8456275

Claim:
An electric wiring system of a motor vehicle with control devices that communicate with each other via a data bus, and with a communication apparatus inside the vehicle for data exchange with at least one remote communication station outside the vehicle via a communication channel, wherein a first remote communication station outside the vehicle transmits at least one of a cryptographic key, a certificate, and a certificate revocation list for storage in a first control device of the plurality of control devices via the communication channel to the communication apparatus inside the vehicle, the communication apparatus inside the vehicle communicates with a data bus using data technology and the at least one of the cryptographic key, the certificate and the certificate revocation list is supplied to the first control device via the data bus, the first control device stores the at least one of the cryptographic key, the certificate and the certificate revocation list in coded or decoded form, the at least one of the cryptographic key, the certificate and the certificate revocation list is used at least in the framework of an authentication, and the authentication between the first control device and a second remote communication station outside the vehicle takes place relative to a Web server of a third party, the vehicle authenticates itself with a first key/certificate combination of a first cryptographic key and a first certificate to the second remote communication station outside the vehicle, and the second remote communication station outside the vehicle authenticates itself to the vehicle with a second key/certificate combination of a second cryptographic key and a second certificate.