Electronic lock system

Details Electronic lock system Electronic lock system

H - Electricity

04

L

342/6.1

H04L 9/00 (2006.01) G07C 9/00 (2006.01)

Patent

CA 1274892

ELECTRONIC LOCK SYSTEM Abstract An electronic lock system having a data encryption key physically and electronically protected from identification for protecting electronic equipment from use by unauthorized personnel. The lock system includes two keys circuits that implement an encryption key and algorithm for encrypting random data. The encryption key and algorithm are physically protected from physical identification by encapsulating the implementation in an integrated circuit. The second key circuit identical to the first is included in a lock circuit for generating two output signals. One output signal represents an unlocked condition of the system, whereas the other represents the lock condition. A random data signal is applied to the two key circuits for encryption under the encryption key and algorithm. The lock circuit further includes a match circuit which generates the unlocked condition output signal when the encrypted data from the two key circuits matches for a predetermined period of time. Otherwise, the match circuit generates the locked condition output signal.

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