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. 04, 2009
Filed:
Nov. 15, 2000
Scott A. Field, Redmond, WA (US);
Jeffrey F. Spelman, Woodinville, WA (US);
Scott A. Field, Redmond, WA (US);
Jeffrey F. Spelman, Woodinville, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
A system collects entropy data and stores the entropy data in a nonvolatile memory. The entropy data stored in the nonvolatile memory is updated with newly collected entropy data. The entropy data stored in the nonvolatile memory is used to generate a string of random bits. The entropy data is collected from multiple sources within a computer system and may include data related to a processor in the computer system and an operating system executing on the computer system. The entropy data is maintained in a protected portion of an operating system kernel. A hashing algorithm is applied to the entropy data to generate random seed data.