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. 11, 2025
Filed:
Jul. 21, 2020
Sony Interactive Entertainment Inc., Tokyo, JP;
Akiyuki Hatakeyama, Kanagawa, JP;
SONY INTERACTIVE ENTERTAINMENT INC., Tokyo, JP;
Abstract
Provided are an access control apparatus, an access control method, and a program that can reduce risks of tampering with a block while at the same time keeping ICV data size to a minimum. An individual key generation section () generates an individual key specific to an information processing apparatus (). An ICV data generation section () generates, by using an individual key, ICV data that is based on verified digest value data, specific to the information processing apparatus (), and smaller in data size than the digest value data. An ICV calculation section () calculates, by using the individual key, an ICV based on the block to which access is requested. A comparison section () compares the ICV indicated by a part of the ICV data corresponding to the block with the ICV calculated by the ICV calculation section (). A writing section () writes the block to a memory in a case where the comparison succeeds.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile