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:
Feb. 16, 2021
Filed:
Aug. 29, 2016
Applicant:
Nec Corporation, Tokyo, JP;
Inventor:
Jun Furukawa, Tokyo, JP;
Assignee:
NEC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/08 (2006.01); G09C 1/00 (2006.01); G06F 7/485 (2006.01); G06F 7/544 (2006.01); G06F 7/58 (2006.01); G06F 7/72 (2006.01);
U.S. Cl.
CPC ...
H04L 9/0861 (2013.01); G06F 7/485 (2013.01); G06F 7/5443 (2013.01); G06F 7/582 (2013.01); G06F 7/727 (2013.01); G09C 1/00 (2013.01); H04L 9/085 (2013.01); H04L 2209/46 (2013.01);
Abstract
The secret calculation system comprises three secret calculation apparatuses. An isecret calculation apparatus (i=1, 2, 3) comprises a holder that holds (S[i], T[i]) and (S'[i], T′[i]) as distributed values of an n-bit number W and an n-bit W′ (n is any natural number), respectively; a first multiplicator that derives a logical conjunction of S[i] and S′[i]; a second multiplicator that derives a logical conjunction of T[i] and T′[i]; and a first subtractor that derives a difference between the logical conjunction derived by the first multiplicator and the logical conjunction derived by the second multiplicator.