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:
Jan. 06, 2026
Filed:
Nov. 04, 2022
Hitachi, Ltd., Tokyo, JP;
Keisei Fujiwara, Tokyo, JP;
Hisayoshi Sato, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
This computer system comprises a computer having a processor that has a function for setting a confidence region in a memory, the confidence region having ensured security and being logically isolated. The computer system accepts a request for execution of processing on encrypted data, in which data is encrypted that includes a plurality of block processes and also includes confidential information, determines whether the encrypted data needs to be decrypted when executing one block process, and executes the block process using a region that is different from the confidence region when the encrypted data does not need to be decrypted, or executes the block process using the confidence region when the encrypted data needs to be decrypted.