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1. (WO2018199713) BIOMETRIC INFORMATION AUTHENTICATION METHOD FOR PROTECTING BIOMETRIC INFORMATION

Pub. No.:    WO/2018/199713    International Application No.:    PCT/KR2018/005012
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Tue May 01 01:59:59 CEST 2018
IPC: G06F 21/32
G06F 21/45
H04L 9/30
Applicants: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
서울대학교산학협력단
Inventors: CHEON, Junghee
천정희
SONG, Yongsoo
송용수
Title: BIOMETRIC INFORMATION AUTHENTICATION METHOD FOR PROTECTING BIOMETRIC INFORMATION
Abstract:
A confidential information authentication method according to the present invention comprises: a first step of allowing a confidential information authentication server to receive, from a confidential information registration terminal, the product of a first confidential information vector and a matrix (Q) and store the same; a second step of allowing the confidential information authentication server to receive, from a confidential information authentication request terminal, a third vector enabling the value, obtained by multiplying a transposed matrix (QT) of the matrix and the third vector, to become a second confidential vector, with respect to a second confidential information vector for which an authentication request was made; a third step of allowing the confidential information authentication server to calculate the product of the matrix and a first confidential vector and an inner product of the third vector; and a fourth step of allowing the confidential information authentication server to calculate 1/2(n - inner product), determine the confidential information authentication to have succeeded if the value is less than or equal to a predetermined value, and determine the confidential information authentication to have failed in all other cases.