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:
Mar. 13, 2018
Filed:
Dec. 22, 2015
Applicant:
Qualcomm Incorporated, San Diego, CA (US);
Inventors:
Ivan McLean, Solana Beach, CA (US);
Ashish Grover, San Diego, CA (US);
Assignee:
QUALCOMM Incorporated, San Diego, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 9/00 (2006.01); G06F 15/177 (2006.01); G06F 21/57 (2013.01); H04L 9/08 (2006.01);
U.S. Cl.
CPC ...
G06F 21/575 (2013.01); H04L 9/0861 (2013.01); G06F 2221/034 (2013.01);
Abstract
Methods, apparatus, and computer program products for generating a derivative key for an execution environment (EE) are described. An example of a method includes obtaining a device key by a key derivation circuit, obtaining a context string by the key derivation circuit from a one-time writable bit register (OWBR), generating the derivative key for a current EE by the key derivation circuit based on the device key and on the context string from the OWBR.