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:
Sep. 29, 2026
Filed:
Mar. 28, 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 acquires a plurality of range proof data, generates a digital signature for each of the range proof data, and transmits a data set, a sanitizable signature, the range proof data, and the digital signature to a data processing apparatus. The data processing apparatus performs a process for performing generalizing processing for processing-target data, performs a process for the sanitizable signature, and selects range proof data corresponding to a range of a generalized attribute value. The data processing apparatus transmits the processed data set, the processed sanitizable signature, the selected range proof data, and the digital signature corresponding to this range proof data to a data receiving apparatus. The data receiving apparatus verifies the sanitizable signature, verifies the digital signature corresponding to the range proof data, and verifies the range proof data.