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:
Sep. 17, 2019
Filed:
Mar. 14, 2017
Microsoft Technology Licensing, Llc, Redmond, WA (US);
Niels T. Ferguson, Redmond, WA (US);
Magnus Bo Gustaf Nystrom, Sammamish, WA (US);
Dave M. McPherson, Bothell, WA (US);
Paul England, Bellevue, WA (US);
Mark Fishel Novak, Newcastle, WA (US);
Microsoft Technology Licensing, LLC, Redmond, WA (US);
Abstract
A keying infrastructure may generate and/or manage cryptographic keys. The cryptographic keys may include identity keys, encryption keys, and a variety of other types of keys. The cryptographic keys may be derived or created with a key derivation function (KDF) or other one-way function. The cryptographic keys may include keys that are accessible to a boot loader, keys that are accessible to particular components of a Trusted Execution Environment (TrEE), and so on. In some examples, a key may be derived from a preceding key in a sequence of keys. The preceding key may be deleted when the key is derived.