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A key and lock device comprises a key having a first electronic circuit and a lock having a second electronic circuit. The key and the lock store secret information, some of which is unique for each device. The key and the lock exchange a random number through connectors and perform a calculation in...

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Bibliographische Detailangaben
Hauptverfasser:	JOHAN WARNSTROEM, REIJO HAKKARAINEN, GUDRUN BRENNECKE, GILBERT ANDRE, HANNU SIVONEN, ROLF NORBERG, JEAN MARIE THOMAS, WALTER HAMMER, BJOERN MAGNUSSON, CHRISTIAN DARMANIN, NICOLAS PEGUIRON, CLAUDE-ERIC JAQUET, JENS GUERTLER, ALAIN VARENNE, INGE LIDEN, ARNAUD LEFEBVRE, CHRISTOPHE CHANEL, JUERGEN KRUEHN, LANCE G. SCHOELL
Format:	Patent
Sprache:	est
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 key and lock device comprises a key having a first electronic circuit and a lock having a second electronic circuit. The key and the lock store secret information, some of which is unique for each device. The key and the lock exchange a random number through connectors and perform a calculation in the respective circuitry based on the random number and secret information. An electrical blocking mechanism is moved to a non-blocking position if a comparison of the calculations in the circuits gives the correct result.