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. 18, 2025
Filed:
Mar. 02, 2021
Applicant:
Kioxia Corporation, Tokyo, JP;
Inventor:
Taichi Ejiri, Yokohama Kanagawa, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/08 (2006.01); G06F 13/16 (2006.01); H04L 9/06 (2006.01); H04L 9/14 (2006.01);
U.S. Cl.
CPC ...
H04L 9/0822 (2013.01); G06F 13/1668 (2013.01); H04L 9/0643 (2013.01); H04L 9/0825 (2013.01); H04L 9/14 (2013.01);
Abstract
A memory system includes a nonvolatile memory and a controller. In a case where first encrypted data obtained by encrypting first data with a first DEK is stored in the nonvolatile memory, in response to determining that second data received based on a first write request from a host is the same as the first data and a first user uses the host, the controller encrypts the first DEK with a first KEK associated with the first user to acquire a first encrypted DEK, and stores the first encrypted DEK.