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.

Date of Patent:
Aug. 15, 2023

Filed:

Mar. 04, 2022
Applicant:

Kioxia Corporation, Tokyo, JP;

Inventors:

Takaya Ogawa, Kawasaki, JP;

Hajime Matsui, Yokohama, JP;

Assignee:

Kioxia Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/00 (2006.01); G06F 12/14 (2006.01); G06F 21/60 (2013.01); G06F 12/02 (2006.01);
U.S. Cl.
CPC ...
G06F 12/1408 (2013.01); G06F 12/0246 (2013.01); G06F 12/1441 (2013.01); G06F 12/1466 (2013.01); G06F 21/602 (2013.01); G06F 21/604 (2013.01);
Abstract

According to one embodiment, a key search circuit includes a hit determination circuit that determines whether a key search request hits a content stored in a search result buffer, and an update determination circuit that determines whether to update the content stored in the search result buffer. When the hit determination circuit determines that the key search request hits the search result buffer, the key search circuit outputs the search result stored in the search result buffer to an encryption/decryption circuit. When the update determination circuit determines to update the search result buffer, the key search circuit updates the content stored in the search result buffer with the key search request and a search result obtained from a range table.


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