METHOD OF CONTROLLING BIOMETRIC AUTHENTICATION SYSTEM, NON-TRANSITORY, COMPUTER READABLE STORAGE MEDIUM AND BIOMETRIC AUTHENTICATION SYSTEM

• US 20120159600A1
• Filed: 02/28/2012
• Published: 06/21/2012
• Est. Priority Date: 09/18/2009
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: TAKAGI, Junji
• Granted Patent: US 8,863,259 B2
• Time in Patent Office: Days
• US Class Current: 726/7
• CPC Class Codes: G06F 21/32 using biometric data, e.g. fingerprints, iris scans or voiceprints
• CPC Class Codes: G06V 10/993 Evaluation of the quality of the acquired pattern
• CPC Class Codes: G06V 40/1365 Matching; Classification

Abstract

A control method for controlling a biometric authentication system including a server that stores reference biometric data, and a client that acquires biometric authentication data of the user, has saving in the server a table in which identification information identifying the user and a previous authentication result of the user are associated with each other, transmitting the identification information to the server, referring to the identification information and acquiring a previous authentication result of the user corresponding to the identification information from the table, calculating, an authentication success rate of the user from the acquired previous authentication result, transmitting the reference biometric data to the client when the authentication success rate is less than or equal to a certain value, calculating, a degree of matching between the biometric authentication data and the reference biometric data, and determining, whether or not the authentication of the user has succeeded.

Claims

1. A control method for controlling a biometric authentication system including a server that stores reference biometric data used as a reference for authentication of a user, and a client that acquires biometric authentication data from the user, the control method comprising:

saving in the server a table in which identification information identifying the user and a previous authentication result of the user are associated with each other;

transmitting the identification information identifying the user to the server from the client;

referring to, at the server, the identification information transmitted from the client and acquiring a previous authentication result of the user corresponding to the identification information from the table;

calculating, at the server, an authentication success rate of the user from the acquired previous authentication result;

transmitting the reference biometric data from the server to the client when the authentication success rate is less than or equal to a certain value and then calculating, at the client, a degree of matching between the biometric authentication data and the reference biometric data transmitted from the server; and

determining, based on the degree of matching, whether or not the authentication of the user has succeeded.

2. The control method according to claim 1, further comprising, when the authentication success rate is greater than or equal to the certain value, calculating, at the server, a degree of matching between the biometric authentication data, which is transmitted from the client, and the reference biometric data, and determining whether or not the authentication of the user has succeeded.

3. The control method according to claim 1, further comprising storing, in the client, reference biometric data corresponding to a user for which the authentication success rate is less than or equal to the certain value, and, when an authentication process is performed on the user, verifying, at the client, biometric authentication data of the user against the stored reference biometric data.

4. The control method according to claim 1, further comprising recording, at the server, a history of authentication results corresponding to the client, and referring to, at the server, the history of authentication results to determine whether the authentication of the user is to be performed by the client or the server.

5. The control method according to claim 1, further comprising, when the authentication success rate is less than or equal to the certain value, transforming, at the server, the reference biometric data using specific information, transmitting the transformed reference biometric data from the server to the client, transforming, at the client, the biometric authentication data using the specific information, and performing, at the client, a verification process between the transformed reference biometric data and the transformed biometric authentication data.

6. A non-transitory, computer readable storage medium storing a program for controlling a biometric authentication system including a server that stores reference biometric data used as a reference for authentication of a user, and a client that acquires biometric authentication data from the user, according to a process comprising:

saving in the server a table in which identification information identifying the user and a previous authentication result of the user are associated with each other;

transmitting the identification information identifying the user to the server from the client;

referring to, at the server, the identification information transmitted from the client and acquiring a previous authentication result of the user corresponding to the identification information from the table;

calculating, at the server, an authentication success rate of the user from the acquired previous authentication result;

transmitting the reference biometric data from the server to the client when the authentication success rate is less than or equal to a certain value;

calculating, at the client, a degree of matching between the biometric authentication data and the reference biometric data transmitted from the server; and

determining, based on the degree of matching, whether or not the authentication of the user has succeeded.

7. A biometric authentication system comprising a server that stores reference biometric data used as a reference for authentication of a user, and a client that acquires biometric authentication data from the user,

the server including a storage unit for storing a table in which identification information identifying user and a previous authentication result of the user are associated with each other, a calculating unit for referring to the identification information and the table and calculating an authentication success rate of the user from a previous authentication result of the user corresponding to the identification information, and a transmitting unit for transmitting the reference biometric data to the client when the authentication success rate is less than or equal to a certain value,

the client including a determining unit for calculating a degree of matching between the biometric authentication data and the reference biometric data, which is transmitted from the server, and determining, based on the degree of matching, whether or not the authentication of the user has succeeded.

8. The biometric authentication system according to claim 7, wherein the server further includes a determining unit for, when the authentication success rate is greater than or equal to the certain value, calculating a degree of matching between the biometric authentication data, which is transmitted from the client, and the reference biometric data, and for determining, based on the degree of matching, whether or not the authentication of the user has succeeded.

9. The biometric authentication system according to claim 7, wherein the client further includes a storage unit for storing reference biometric data corresponding to a user for which the authentication success rate is less than or equal to the certain value, and the determining unit of the client calculates a degree of matching between the reference biometric data stored in the storage unit of the client and biometric authentication data of the user, and determines, based on the degree of matching, whether or not the authentication of the user has succeeded.

10. The biometric authentication system according to claim 7, wherein the server further includes a transforming unit for, when the authentication success rate is less than or equal to the certain value, transforming, at the server, the reference biometric data using specific information, the client further includes a transforming unit for transforming the biometric authentication data using the specific information, and the determining unit of the client calculates a degree of matching between the transformed reference biometric data and the transformed biometric authentication data, and determines, based on the degree of matching, whether or not the authentication of the user has succeeded.