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:
Nov. 14, 2000
Filed:
Aug. 23, 1996
Helmut Fieres, Mountain View, CA (US);
Roger Merkling, Palo Alto, CA (US);
Keith Klemba, Palo Alto, CA (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
An application which requests cryptographic services from various service elements within an international cryptography framework is identified through a certificate to protect against the misuse of a granted level of cryptography. A cryptographic unit, one of the framework core elements, builds several certification schemes for application objects. One or more methods are provided that establish a degree of binding between an application code image and issued certificates using the framework elements. Within the framework, the application is assured of the integrity of the cryptographic unit from which it is receiving services. One or more mechanisms are provided which allow the application to validate that the cryptographic unit has not been replaced or tampered with.