Data verification method

Method for verifying data generated by an electronic device included in equipment, the electronic device including a computing unit, a one-time programmable memory and a volatile memory, the equipment including a rewritable non-volatile memory and a communication bus enabling the electronic device to store data in the rewritable non-volatile memory. The method includes: creating a secured channel by encryption between the equipment and a server; obtaining an authentication key from the server; loading data and a message authentication code from the rewritable non-volatile memory to the volatile memory, the message authentication code obtained by the electronic device from the authentication key and said data prior to the storage of said data and message authentication code in the rewritable non-volatile memory, the electronic device not having kept the authentication key following the obtaining of the message authentication code; verifying said data using the secret key and the message authentication code.