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:
Jul. 09, 2019
Filed:
Feb. 15, 2017
Hitoshi Namiki, Kanagawa, JP;
Hiroshi Kobayashi, Kanagawa, JP;
Ryouji Yamamoto, Kanagawa, JP;
Eiichiro Yoshida, Kanagawa, JP;
Masuyoshi Yachida, Kanagawa, JP;
Yuki Takaya, Kanagawa, JP;
Hitoshi Namiki, Kanagawa, JP;
Hiroshi Kobayashi, Kanagawa, JP;
Ryouji Yamamoto, Kanagawa, JP;
Eiichiro Yoshida, Kanagawa, JP;
Masuyoshi Yachida, Kanagawa, JP;
Yuki Takaya, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A data processing apparatus includes a memory storing a program and a processor configured to execute the program to implement a process of reading signed data including a predetermined number (n) of secret sharing data sets generated for each section of time series data and a signature value calculated for the each section of time series data based on a secret sharing protocol. The n secret sharing data sets include n units of data acquired from each section of time series data and parameter information for a polynomial of a predetermined degree calculated based on the acquired n units of data. The processor further implements processes of acquiring the predetermined degree, and editing the signed data by extracting a specific number of the secret sharing data sets from the n secret sharing data sets for the each section of time series data according to the acquired predetermined degree.