Method and apparatus for enhancing security in and...

G - Physics – 06 – F

Patent

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G06F 12/14 (2006.01) G01R 31/317 (2006.01) G01R 31/3185 (2006.01) G06F 11/00 (2006.01) G06F 21/00 (2006.01) G08B 31/00 (2006.01) G06F 1/00 (2006.01)

Patent

CA 2196482

VLSI and ULSI devices like microprocessors and DRAM devices are prone to large scale theft from factories and warehouses. A proposed method of reducing the theft incorporates a small amount of non-volatile flash memory in these devices. The flash memory contains password, device serial number and user identification information. On power-up, the device initiates an encrypted password verification session through a standard interface. If the user supplied password fails, the device's operational ports (any data or control output buses) are tri-stated, thus making the device unusable. The device serial number and user identification information are useful in determining ownership of stolen devices when recovered.

Les composants VLSI et ULSI comme les microprocesseurs et la mémoire DRAM sont sujets au vol à grande échelle dans les manufactures et les entrepôts. Une méthode proposée visant à réduire le vol consiste à incorporer une petite quantité de mémoire flash non volatile dans ces composants. La mémoire flash contient un mot de passe, le numéro de série, et l'information relative à l'utilisateur. € la mise sous tension, le composant déclenche une session de vérification du mot de passe crypté par une interface standard. Si le mot de passe fourni par l'utilisateur n'est pas le bon, les ports opérationnels du composant (tout bus de données ou de commande) est mis en état flottant, rendant ainsi le composant inutilisable. Le numéo de série et l'information relative à l'utilisateur sont utiles pour déterminer la propriété de composants volés quand ils sont retrouvés.

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