System for the secure management of digitally controlled locks, operating by means of crypto acoustic credentials

A secured system for controlling the opening of lock devices, comprising:

• at least one lock device provided with electronic circuits for the conditional control of locking/unlocking mechanical members based on digital accreditation data (DOC), said lock device comprises a microcontroller configured for recognizing, analyzing and authenticating said digital accreditation data, and for unlocking the mechanical members upon recognizing compliant digital accreditation data;
• a mobile phone at the disposal of a user authorized to open the lock device;
• a remote management site comprising:
• a database of approved users with, for each user, an identifier associated with a mobile phone number an input for receiving digital accreditation data (DOC) adapted to allow the opening of specific lock devices, and
• a generator of encrypted acoustic accreditationsconfigured to convert said digital accreditation data (DOC) into encrypted acoustic accreditation (CAC) in the form of single-use audio signals;
• and
• a mobile network operator, coupled to the management site and to the mobile phone, and configured for the secured transmission of the encrypted acoustic accreditations from the management site to the user's mobile phone, the phone comprising an electro-acoustic transducer adapted to reproduce said encrypted acoustic accreditations,
• wherein the lock device comprises an acoustic module comprising:
• an electro-acoustic transducer capable of picking up encrypted acoustic accreditations reproduced by the phone's transducer previously placed in the vicinity of the lock device, said acoustic module configured to extract said digital accreditation data (DOC) from the encrypted acoustic accreditation (CAC) picked up by the transducer, and to apply to said microcontroller the so-extracted digital accreditation data (DDC),
• wherein the encrypted acoustic accreditation (CAC) produced by the acoustic accreditation generator comprises:
• a field (CORE/CAC) resulting from the conversion of said digital accreditation data (CAC), and
• a variable field, with a different content for each encrypted acoustic accreditation generated,
• wherein said variable field is a sequence number (SEQ) or a time stamp, and the acoustic module is configured to memorize at each use the sequence number (SEQ) or the time stamp of the encrypted acoustic accreditation (CAC) having allowed the unlocking of the mechanical members, and to compare and check the compliance of the sequence number or the time stamp of any latter encrypted acoustic accreditation.

A secured system for controlling the opening of lock devices, comprising:

• at least one lock device provided with electronic circuits for the conditional control of locking/unlocking mechanical members based on digital accreditation data (DOC), said lock device comprises a microcontroller configured for recognizing, analyzing and authenticating said digital accreditation data, and for unlocking the mechanical members upon recognizing compliant digital accreditation data;
• a mobile phone at the disposal of a user authorized to open the lock device;
• a remote management site comprising:
• a database of approved users with, for each user, an identifier associated with a mobile phone number an input for receiving digital accreditation data (DOC) adapted to allow the opening of specific lock devices, and
• a generator of encrypted acoustic accreditations configured to convert said digital accreditation data (DOC) into encrypted acoustic accreditation (CAC) in the form of single-use audio signals;
• and
• a mobile network operator, coupled to the management site and to the mobile phone, and configured for the secured transmission of the encrypted acoustic accreditations from the management site to the user's mobile phone, the phone comprising an electro-acoustic transducer adapted to reproduce said encrypted acoustic accreditations,
• wherein the lock device comprises
• an acoustic module comprising:
• an electro-acoustic transducer capable of picking up encrypted acoustic accreditations reproduced by the phone's transducer previously placed in the vicinity of the lock device;
• said acoustic module configured to extract said digital accreditation data (DOC) from the encrypted acoustic accreditation (CAC) picked up by the transducer, and to apply to said microcontroller the so-extracted digital accreditation data (DDC),
• wherein the acoustic module is configured to produce return acoustic signals, upon picking up of digital accreditation data, and includes an electro-acoustic transducer capable of reproducing said return acoustic signals,
• wherein said return acoustic signals comprise at least one time marker (BEEP1, BEEP2) emitted during, or immediately after, the reception of the acoustic accreditation (CAC), this marker being emitted at a time instant corresponding to a predetermined time position (T1, T2), peculiar to the lock device, with respect to the acoustic accreditation.