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:
Jul. 21, 2020
Filed:
Mar. 13, 2019
Microsoft Technology Licensing, Llc, Redmond, WA (US);
Christopher Edward Fenner, Seattle, WA (US);
Peter David Waxman, Seattle, WA (US);
Gabriel Fortunato Stocco, Redmond, WA (US);
Kam Kouladjie, Woodinville, WA (US);
Cristian Stefan Salvan, Redmond, WA (US);
Prabu Raju, Kirkland, WA (US);
Himanshu Soni, Bothell, WA (US);
Gridhar Viswanathan, Redmond, WA (US);
Microsoft Technology Licensing, LLC, Redmond, WA (US);
Abstract
The present invention provides for streamlined issuance of certificates and other tokens that are contingent on key attestation of keys from a trusted platform module within a computing platform. Various methods are described for wrapping the requested token in a secret, such as an AES key, that is encrypted to a TPM based key in a key challenge. If the requesting platform fails the key challenge, the encrypted certificate or token cannot be decrypted. If requesting platform passes the challenge, the encrypted certificate or token can be decrypted using the AES key recovered from the key challenge.