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:
Oct. 14, 2014
Filed:
Oct. 21, 2010
Applicant:
Satoshi Obana, Minato-ku, JP;
Inventor:
Satoshi Obana, Minato-ku, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04K 1/00 (2006.01); H04L 9/10 (2006.01); H04L 9/28 (2006.01); H04L 9/08 (2006.01); G06F 21/62 (2013.01);
U.S. Cl.
CPC ...
H04L 9/085 (2013.01); G06F 21/6209 (2013.01); G06F 2221/2113 (2013.01); G06F 2221/2117 (2013.01); G06F 2221/2141 (2013.01); G06F 2221/2107 (2013.01); G06F 21/6218 (2013.01);
Abstract
A verification device, upon the input of any k items of shared information among n items of shared information and 't': generates as subsets all combinations that select r items of shared information among the k items of shared information received as input where r satisfies r≧t+2; for each of the subsets, uses the cheater-identification information belonging to the subset to judge whether dishonest shared information is included in the subset; and based on the judgment results, generates and supplies as output a cheater set indicating dishonest shared information among the k items of shared information.