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, 2015
Filed:
Jan. 31, 2008
Manabu Maeda, Osaka, JP;
Masao Nonaka, Osaka, JP;
Yuichi Futa, Osaka, JP;
Kaoru Yokota, Hyogo, JP;
Natsume Matsuzaki, Osaka, JP;
Hiroki Shizuya, Miyagi, JP;
Masao Sakai, Miyagi, JP;
Shuji Isobe, Miyagi, JP;
Eisuke Koizumi, Miyagi, JP;
Shingo Hasegawa, Miyagi, JP;
Masaki Yoshida, Kanagawa, JP;
Manabu Maeda, Osaka, JP;
Masao Nonaka, Osaka, JP;
Yuichi Futa, Osaka, JP;
Kaoru Yokota, Hyogo, JP;
Natsume Matsuzaki, Osaka, JP;
Hiroki Shizuya, Miyagi, JP;
Masao Sakai, Miyagi, JP;
Shuji Isobe, Miyagi, JP;
Eisuke Koizumi, Miyagi, JP;
Shingo Hasegawa, Miyagi, JP;
Masaki Yoshida, Kanagawa, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A distributing device for generating private information correctly even if shared information is destroyed or tampered with. A shared information distributing device for use in a system for managing private information by a secret sharing method, including: segmenting unit that segments private information into a first through an npieces of shared information; first distribution unit that distributes the n pieces of shared information to n holding devices on a one-to-one basis; and second distribution unit that distributes the n pieces of shared information to the n holding devices so that each holding device holds an ipiece of shared information distributed by the first distribution unit, as well as a pieces of shared information being different from the ipiece of shared information in ordinal position among n pieces of shared information, 'i' being an integer in a range from 1 to n.