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:
Mar. 16, 1999
Filed:
Mar. 28, 1996
Applicant:
Inventors:
An Van Le, Sunnyvale, CA (US);
William B Sweet, Morgan Hill, CA (US);
Howard Crompton Herbert, Phoenix, AZ (US);
Assignee:
National Semiconductor Corporation, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
380-4 ; 380 52 ;
Abstract
A technique to dynamically configure a Secure Processing Unit (SPU) chip in a secure manner using a capability table, which defines the functions that an SPU can perform. The capability table employs a digital signature to ensure the authenticity of the source and contents of the table. It also contains information which identifies the SPU for which the table is intended and a time-stamp indicating the time by which the table must be loaded into an SPU.