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:
Oct. 06, 2026
Filed:
Oct. 01, 2024
Nec Corporation, Tokyo, JP;
Jun Furukawa, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
An information processing device includes an authenticated memory encryption engine configured to perform a cryptographic process and an authentication process using an authentication tree for data, and perform an authentication process for tags of respective nodes present on a path from a leaf node to which the data is assigned to a root node, in which the authenticated memory encryption engine is further configured to: update, when any of nodes in the authentication tree is to be deleted, a counter value assigned to a parent node of the node to be deleted based on a counter value assigned to the node to be deleted; and set, when a new node is to be added at a position where the deleted node was originally located in the authentication tree, a counter value assigned to the added node based on a counter value assigned to a parent node of the added node.