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:
Aug. 07, 2007
Filed:
Jun. 29, 2001
Dominique Gougeon, Rocklin, CA (US);
Serge Le Crom, La Terrasse, FR;
John F. Sheets, San Francisco, CA (US);
Dominique Gougeon, Rocklin, CA (US);
Serge Le Crom, La Terrasse, FR;
John F. Sheets, San Francisco, CA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
Protection of private keys used to digitally sign files to be downloaded to a terminal is accomplished by storing the private keys in smartcards, and arranging a secure processor unit embedded in the smartcard to perform all signing operations requiring access to the keys so that the keys never leave the card. In addition, access to the signing operations is protected by multiple PINs, which may be distributed to multiple individuals and/or used to establish different signing authorization levels associated with different types of files.