Technique for authenticating an object on basis of features extracted from the object
First Claim
1. A system for authenticating an authentication object that represents a user by comparing features that are extracted from the authentication object with features previously registered in an information recording medium associated with the user, the number of registered features recorded in said information recording medium being fewer than the number of extracted features, the system comprising:
- an extraction unit for extracting a plurality of features from the authentication object in response to a user authentication request;
an authentication unit for reading a combination of registered features previously recorded on said information recording medium, comparing the registered features with corresponding ones of the extracted features and authenticating the authentication object based on a result of the comparison;
a selection unit for responding to a successful authentication by selecting, from the extracted features, a new combination of features different from the combination previously recorded on said information recording medium; and
a registration unit for recording the selected new combination of features on said information recording medium in place of the previously recorded registered features.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention discourages effective illegal use of compromised biometric information in biometric authentication and allows biometric authentication to be securely continued even when some biometric information is compromised. A user authentication system compares extracted user features with a previously registered combination of features and authenticates the user on the basis of the result of the comparison. If the authentication is successful, the previously registered combination is replaced with a new combination of features that are registered for use in the subsequent authentication of the authentication object.
21 Citations
12 Claims
-
1. A system for authenticating an authentication object that represents a user by comparing features that are extracted from the authentication object with features previously registered in an information recording medium associated with the user, the number of registered features recorded in said information recording medium being fewer than the number of extracted features, the system comprising:
-
an extraction unit for extracting a plurality of features from the authentication object in response to a user authentication request; an authentication unit for reading a combination of registered features previously recorded on said information recording medium, comparing the registered features with corresponding ones of the extracted features and authenticating the authentication object based on a result of the comparison; a selection unit for responding to a successful authentication by selecting, from the extracted features, a new combination of features different from the combination previously recorded on said information recording medium; and a registration unit for recording the selected new combination of features on said information recording medium in place of the previously recorded registered features. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A computer-implemented method for authenticating a user by comparing features that are extracted from the user with features that are registered in advance as a combination of features recorded on an information recording medium associated with the user, the method comprising:
-
extracting a plurality of features from the user; comparing at least some of the extracted features with a previously registered combination of features recorded on the information recording medium;
the number of the registered features being fewer than the number of the extracted features, and authenticating the user based on a result of the comparison;if the authentication is successfully completed, selecting a new combination of extracted features; and registering the new combination for use in a subsequent authentication of the user by recording the new combination on the information recording medium in place of the previously registered combination on the information recording medium. - View Dependent Claims (8, 9)
-
-
10. A computer program product comprising a machine readable storage medium embodying program instructions, said program instructions when loaded into and executed by a computer causing the computer to perform a method of authenticating a user comprising the steps of:
-
extracting a plurality of features from the user; reading a previously registered combination of user features from an information recording medium associated with the user;
the number of the previously registered features being fewer than the number of the extracted features;comparing at least some of the extracted features with the previously registered combination of features and authenticating the user based on a result of the comparison; if the authentication is successfully completed, selecting a new combination of extracted features; and registering the new combination by recording the new combination on the information recording medium in place of the previously registered combination for use in a subsequent authentication of the user. - View Dependent Claims (11, 12)
-
Specification