The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 05, 2007
Filed:
Jan. 11, 2002
Alain Benayoun, Cagnes-sur-Mer, FR;
Jacques Fieschi, Biot, FR;
Jean-francois Le Pennec, Nice, FR;
Pascal Roy, Biot, FR;
Alain Benayoun, Cagnes-sur-Mer, FR;
Jacques Fieschi, Biot, FR;
Jean-Francois Le Pennec, Nice, FR;
Pascal Roy, Biot, FR;
Lenovo Singapore Pte. Ltd, Singapore, SG;
Abstract
A security system for preventing unauthorized use of a computer device. An extractable security piece includes an extractable main private key and a main PC public key. A PC security area which is a non-extractable part of the computer device includes a PC private key and an extractable main public key, which, together with the keys of the extractable security piece, constitute a Public Key Infrastructure. The extractable security piece and the PC security area include processing means for mutual authentication of the extractable security piece and the PC security area after the extractable security piece, which had been previously removed, has been reinserted in the computer device, thereby enabling the authorized user to access data stored in the computer device.