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:
Aug. 25, 2026
Filed:
Mar. 23, 2022
Nec Corporation, Tokyo, JP;
Hikaru Tsuchida, Tokyo, JP;
Haruna Fukuda, Tokyo, JP;
Kengo Mori, Tokyo, JP;
Toshiyuki Isshiki, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
A data providing apparatus sets a processing rule, sets predetermined random numbers, calculates a signature hash value corresponding to each of a plurality of data, generates a digital signature using the signature hash value, and transmits a data set, the digital signature, and the random numbers to a data processing apparatus. A data processing apparatus performs a process for processing processing-target data, calculates an after-processing hash value corresponding to each of the processing-target data, and transmits the already-processed data set, the after-processing hash value, and the digital signature to a data receiving apparatus. A data receiving apparatus calculates a verification hash value corresponding to each of the plurality of data by using the already-processed data set and the after-processing hash value, and verifies the verification hash value and the digital signature.