Secure method for controlling the opening of lock devices by means of a communicating object such as a mobile phone

A secured method for controlling the opening of lock devices, characterized by the following steps:

• a) generating by an application software (SWA) a message forming a key (DKE), said message comprising an encrypted data field containing a time marker, wherein said time marker is a marker of time stamping by a reference clock coupled to the application software, or a sequencing marker incremented by the application software;
• b) transferring the message to a portable communication device (CD), held by a user;
• c) transmitting the message, by a short-range transmission technique, from the communication device to a reading interface (ERED) coupled to a lock device (LOCK);
• d) analyzing the message within the reading interface by:
• decrypting the data field, and
• checking the consistency of the time marker contained in the data field with an inner clock of the reading interface, in the case of a time stamping marker, or with a sequence number memorized in the reading interface, in the case of a sequencing marker;
• and
• e) in the case of a message established as compliant following the checks of step d), sending from the reading interface to the lock device a digital accreditation (OPEN), stored in memory in the reading interface, adapted to operate the lock device unlocking upon recognizing the compliance of said digital accreditation.