Patent ID: 9049192
Filing Date: 2015-06-02
Classification: G06F,H04L

Abstract:
1. A biometric authentication method for a computer system, the computer system including: a plurality of computers for obtaining biometric information from a user and generating authentication information used for authenticating the user; and a server for executing authentication processing by using the authentication information, which is coupled to the plurality of computers, the biometric authentication method including: a first step of extracting, by at least one of the plurality of computers, a first feature based on the obtained biometric information from the user; a second step of generating, by the at least one of the plurality of computers, first parameter information, which is used for keeping the extracted first feature secret, and second parameter information; a third step of generating, by the at least one of the plurality of computers, template information for enrollment by executing a calculation which uses the first feature and the first parameter information; a forth step of transmitting, by the at least one of the plurality of computers, the generated template information for enrollment to the server; a fifth step of storing, by the server, the template information for enrollment; a sixth step of obtaining, by the at least one of the plurality of computers, the biometric information from the user, and extracting a second feature of the obtained biometric information, in a case of authenticating the user; a seventh step of generating, by the at least one of the plurality of computers, template information for authentication by executing an operation which uses the second feature and the second parameter information; a eighth step of transmitting, by the at least one of the plurality of computers, the generated template information for authentication to the server; and a ninth step of calculating, by the server, a similarity between the first feature and the second feature by using the template information for authentication and the template information for enrollment, and authenticating the user based on the calculated similarity.