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. 25, 2015
Filed:
Mar. 13, 2013
Atmel Corporation, San Jose, CA (US);
Kerry David Maletsky, Monument, CO (US);
Michael J. Seymour, Colorado Springs, CO (US);
Brad Phillip Garner, Colorado Springs, CO (US);
Atmel Corporation, San Jose, CA (US);
Abstract
A client device that is coupled to a host device sends a parent public key and an associated certificate to the host device. The parent public key, the certificate and a corresponding parent private key are stored in secure persistent storage included in a secure device associated with the client device. The client device receives instructions from the host device for generating a child private and public key pair. In response to receiving the instructions, the client device generates a child private key based on a first random number produced within the secure device, and a child public key associated with the child private key. The client device computes a first signature on the child public key using the parent private key. The client device sends the child public key and the first signature to the host device.