Patent ID: 8793784

Claim:
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 decrypted 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), controlling the unlocking of the lock device, wherein; said reading interface, coupled to said lock device, stores in a memory a digital accreditation (OPEN) adapted to control said unlocking of the lock device, said digital accreditation is not included in said decrypted data field of said message forming a key (DKE); and in step e), if said checks of step d) are established as compliant, said digital accreditation is sent from the reading interface to the lock device, whereby controlling in response the unlocking, of the lock device, wherein it is further provided, in the case of a message established as compliant following the checks of step d), a step consisting in: f) invalidating, if present, a previous approval relative to a prior user, stored in the reading interface.