Abstract: A method is disclosed. It includes establishing a communication session between a vehicle comprising a first processor and an energy supply terminal comprising a second processor. The method includes obtaining, by the first processor in the vehicle, a credential or token, and then generating an encrypted data packet including the credential or token. The method also includes providing the encrypted data packet to the energy supply terminal. The energy supply terminal transmits the encrypted data packet to a service provider computer, which decrypts the encrypted data packet to obtain the credential or token, and then processes a transaction for supplying the vehicle with energy using the credential or the token.