US 12,249,200 B2
Electronic lock system and associated method of operation
Samuel Browne, Montreal (CA); and Jean-Marc Simohand, Néoules (FR)
Assigned to DORMAKABA CANADA INC., Montreal (CA)
Filed by DORMAKABA CANADA INC., Montréal (CA)
Filed on Feb. 15, 2023, as Appl. No. 18/169,479.
Prior Publication US 2024/0273959 A1, Aug. 15, 2024
Int. Cl. G07C 9/00 (2020.01); G07C 9/27 (2020.01)
CPC G07C 9/00857 (2013.01) [G07C 9/00309 (2013.01); G07C 9/00571 (2013.01); G07C 9/00658 (2013.01); G07C 9/27 (2020.01)] 33 Claims
OG exemplary drawing
 
1. An electronic lock comprising:
an actuator configured to allow or block an access to a physical space asset;
an input interface; and
a lock computer configured to receive an input from the input interface and to operate the actuator, the lock computer having at least one memory and a processor, the at least one memory having stored thereon a decryption key and instructions_which, when executed by the processor, cause the lock computer to
receive a user code having a string of between 6 and 15 characters from the input interface;
decrypt the user code into a plain text code via a format preserving decryption protocol using the decryption key, the plain text code including at least one command to perform at least one security-controlled task; and
execute the at least one command, including performing the at least one security-controlled task;
wherein said decrypt the user code includes attempt to decrypt a master code using a master code format for the decryption key, and attempt to decrypt a non-master code using a non-master code format for the decryption key contingent upon failing the attempt to decrypt a master code.