Key and lock device

A method of authorising a key or lock device follows the following steps. First, a key or lock is provided with an electronic circuitry with an associated memory. Then, a first encryption key (KDES-M, KDES-D, KDES-C, KDES) is stored in the memory. By means of a software operation, the first encrypti...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MAGNUSSON, BJORN, BRENNECKE, GUDRUN, NORBERG, ROLF, SIVONEN, HANNU, LIDEN, INGE
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE CHECKING-DEVICES ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY FIXED CONSTRUCTIONS GENERATING RANDOM NUMBERS HANDCUFFS KEYS LOCKS PHYSICS REGISTERING OR INDICATING THE WORKING OF MACHINES SAFES TIME OR ATTENDANCE REGISTERS TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION VOTING OR LOTTERY APPARATUS WINDOW OR DOOR FITTINGS
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Beschreibung
Zusammenfassung:	A method of authorising a key or lock device follows the following steps. First, a key or lock is provided with an electronic circuitry with an associated memory. Then, a first encryption key (KDES-M, KDES-D, KDES-C, KDES) is stored in the memory. By means of a software operation, the first encryption key stored in said electronic memory is replaced by a second encryption key. This second encryption key is identical to an encryption key stored in a second user device, thereby making said first and second user devices work with each other. This provides for a secure way of distributing keys or locks.