Biometric authentication method and computer system

摘要

A biometric authentication method for a computer system, the computer system comprising: a computer; and an authentication server, the biometric authentication method including steps of: extracting a first feature from the captured biometric information; generating a template polynomial for enrollment; extracting a second feature from the captured biometric information; generating a template polynomial for authentication; generating a correlation function for calculating a correlation between the template polynomial for authentication and the enrolled template polynomial; calculating a correlation value between the template polynomial for authentication and the enrolled template polynomial by using the generated correlation function, and determining based on the calculated correlation value whether or not the biometric information at the time of authentication coincides with the biometric information enrolled.

主权项

1. An updating method for template information for enrollment used for biometrics processing for a computer system,
wherein the computer system includes: a plurality of computers; and a server coupled to each of the plurality of computers, wherein the server stores the template information for enrollment calculated based on feature extracted by biometric information of a user and first parameter information, wherein the updating method for template information for enrollment includes: a first step of generating, by at least one of the plurality of computers, the first parameter information and second parameter information for updating the template information for enrollment; a second step of calculating, by at least one of the plurality of computers, residue multiplication between the first parameter information and the second parameter information to generate a parameter information for updating, and transmitting the generated parameter information for updating to the server; a third step of generating, by the server, a new template information for enrollment based on the template information for enrollment stored in advance and the parameter information for updating; wherein the first parameter information is calculated based on third parameter information, wherein a residue polynomial equal 1, which is calculated by dividing a product of the first parameter information and the third parameter information by a modulo polynomial.