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:
Feb. 28, 2023
Filed:
Oct. 27, 2020
Microsoft Technology Licensing, Llc, Redmond, WA (US);
Avdhesh Chhodavdia, Fremont, CA (US);
Ling Tony Chen, Bellevue, WA (US);
Felix Stefan Domke, Lubeck, DE;
Kambiz Rahimi, Kirkland, WA (US);
Jay Scott Fuller, Scotts Valley, CA (US);
Microsoft Technology Licensing, LLC, Redmond, WA (US);
Abstract
A method for secure key exchange. The method comprises receiving a request to certify a key from a communication partner at an interface between an access and tamper resistant circuit block and exposed circuitry. Within the access and tamper resistant circuit block, a first random private key is generated. A corresponding public key of the first random private key is derived, and a cryptographic digest of the public key and attributes associated with the first random private key is generated. The generated cryptographic digest is signed using a second random private key that has been designated for signing by one or more associated attributes. The public key and the signature are then sent to the communication partner via the interface.