Information matching system and information matching method

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United States of America

PATENT NO 12155769
APP PUB NO 20230006829A1
SERIAL NO

17641884

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Importance

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Abstract

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In order to provide an information matching system achieving an information matching scheme that takes a lower cost and uses secure biometric information, the information matching system includes a concealment apparatus, a decryption apparatus, and a similarity calculating apparatus. The concealment apparatus transmits, to the similarity calculating apparatus, concealed information including information concealing obtained matching information by linear conversion using random numbers. The similarity calculating apparatus calculates, from obtained one or more pieces of registration information and the concealed information received from the concealment apparatus, a concealed similarity which is a value concealing a similarity between the matching information and the registration information, and to transmit the calculated concealed similarity to the decryption apparatus. The decryption apparatus calculates the similarity between the matching information and the registration information from the concealed similarity received from the similarity calculating apparatus, using the random numbers used by the concealment apparatus.

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Patent Owner(s)

Patent OwnerAddress
NEC CORPORATION7-1 SHIBA 5-CHOME MINATO-KU TOKYO 108-8001

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fukuda, Haruna Tokyo, JP 17 22
Isshiki, Toshiyuki Tokyo, JP 60 373
Nara, Masahiro Tokyo, JP 12 18
Okamura, Toshihiko Tokyo, JP 25 285
Tamiya, Hiroto Tokyo, JP 24 20

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