E - Fixed Constructions – 05 – B
Patent
E - Fixed Constructions
05
B
E05B 49/02 (2006.01) E05B 49/00 (2006.01) G07C 9/00 (2006.01)
Patent
CA 2263465
A cryptogram lock system is provided. The lock system comprises a lock body and a key body. The lock body comprises a lock mechanism portion and a lock control portion having a micro-processor, a lock non-volatile memory unit capable of storing a lock code and a true random generator comprising an oscillator of random oscillating frequency. The key body has a key non- volatile memory unit capable of storing a key code. The microprocessor compares the lock code and the key code and provides a signal indicative of co-incidence or non-co-incidence, whereby a signal of co-incidence actuates the lock mechanism portion to open. A new random code is generated each time the lock mechanism is opened and the key code and lock code are updated.
Système autonome de verrouillage par cryptogrammes dynamiques aléatoires, comportant un corps formant serrure et un corps formant clé. Des mémoires rémanentes sont prévues à la fois dans le corps formant serrure et dans le corps formant clé, et chaque mémoire stocke un ensemble de cryptogrammes correspondants. Lors du déverrouillage, le microprocesseur prévu dans le corps formant serrure contrôle les cryptogrammes. S'il y a correspondance, il déverrouille la serrure, sinon il déclenche une alarme. Apres le déverrouillage, le microprocesseur crée un nouvel ensemble de cryptogrammes aléatoires réels correspondants dans les deux mémoires en vue du prochain déverrouillage. Il assure une fonction de protection cryptographique à chaque fois.
Shi Yi
Tan Weizhi
Shi Yi
Sim & Mcburney
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