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. 21, 2020
Filed:
Mar. 02, 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 generation apparatus includes a processor that executes a process including obtaining target data sequentially from time-series data, the target data including n (n being an integer greater than or equal to 2) data items in a predetermined section of the time-series data, calculating parameter information satisfying a (k−1) order polynomial based on the target data, the (k−1) order polynomial including k random values, k being an integer greater than or equal to 1 and less than n, associating the target data to the parameter information, outputting the target data and the parameter information associated to the target data, attaching a signature to secret information based on a secret distributed protocol. The secret information is calculable by using k pairs of data including the target data and the parameter information associated to the target data, and outputting the secret information attached with the signature.