SECURE COMMUNICATION BETWEEN A DATA PROCESSING DEVICE AND A SECURITY MODULE

摘要

A method of creating a secure link between a data processing device (MOB) and a security module (USIM), the data processing device being adapted to communicate with a security module storing a secret data item (k) necessary for the execution by the device of a data processing task, the data processing device and the security module being adapted to communicate with a telecommunications network (RES), wherein the method comprises the steps of: identifying the data processing device (MOB) and the module (USIM) for which a secure link is to be set up in order to send said secret data item (k) from the module to the device; a step of delivering an encryption key (K) in which a trusted server (SC) connected to the telecommunications network delivers an encryption key (K) both to the module (USIM) and to the data processing device (MOB) that have been identified; an encryption step in which said secret data item (k) is encrypted in the module by means of said encryption key (K); a transmission step in which the result of the encryption step is sent by the module (USIM) that has been identified to the device (MOB) that has been identified; and a decryption step in which the device (MOB) decrypts the result that has been received by means of said encryption key (K) that has been received and obtains said secret data item (k).