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:
May. 11, 2021
Filed:
Nov. 05, 2018
Applicant:
Mediatek, Inc., Hsinchu, TW;
Inventor:
Ming Yong Sun, Shanghai, CN;
Assignee:
MEDIATEK, INC., Hsinchu, TW;
Primary Examiner:
Int. Cl.
CPC ...
G06F 21/57 (2013.01); G06F 21/60 (2013.01); G06F 9/445 (2018.01); G06F 12/14 (2006.01); G06F 21/79 (2013.01); G06F 9/4401 (2018.01);
U.S. Cl.
CPC ...
G06F 21/575 (2013.01); G06F 9/4403 (2013.01); G06F 9/445 (2013.01); G06F 12/1408 (2013.01); G06F 21/602 (2013.01); G06F 21/79 (2013.01); G06F 2221/2149 (2013.01);
Abstract
A root key processing method and an associated device are disclosed. The root key processing method is performed by a processor connected to a memory configured with an RPMB section, and includes the following steps. The processor detects whether a root key of the RPMB section is already written in the memory after the processor is powered on. If not, in a secure activation process of the processor, the root key of the RPMB section is written to the memory, wherein the secure activation process is that the processor does not activate a non-secure operation system. The method is capable of preventing leakage of the root key from the memory.