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. 27, 2016
Filed:
Jun. 27, 2014
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Yuka Jo, Kawasaki, JP;
Masaya Yasuda, Kawasaki, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A secret data matching device includes: a memory; and a processor coupled to the memory. The processor executes a process including: storing a first secret vector obtained by concealing first data and key data based on a first random number and a first linear combination of row vectors of a determination matrix which is different for each system including the secret data matching device and which is generated by attaching a random number vector as a last column to a matrix including diagonal components including a threshold value to determine whether the first data and second data are approximate to each other and a threshold value related to the key data; acquiring a second secret vector obtained by concealing the second data based on a second linear combination of row vectors of the determination matrix and a second random number.