TECHNIQUE FOR AUTHENTICATING AN OBJECT ON BASIS OF FEATURES EXTRACTED FROM THE OBJECT
First Claim
1. A system for authenticating an authentication object by comparing features that are extracted from the authentication object with features that are registered in advance, the system comprising:
- an extraction unit that extracts a plurality of features from the authentication object;
an authentication unit that compares the extracted features with a plurality of registered features that are registered in advance in relation to some of the extracted features and authenticates the authentication object on the basis of the result of the comparison;
a selection unit that selects, from the extracted features, a plurality of features forming a different combination other than that of the registered features, if the authentication is successfully completed; and
a registration unit that registers the selected features as a plurality of registered features to be used in a subsequent authentication of the authentication object.
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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 anew combination of features that are registered for use in the subsequent authentication of the authentication object.
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Citations
19 Claims
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1. A system for authenticating an authentication object by comparing features that are extracted from the authentication object with features that are registered in advance, the system comprising:
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an extraction unit that extracts a plurality of features from the authentication object; an authentication unit that compares the extracted features with a plurality of registered features that are registered in advance in relation to some of the extracted features and authenticates the authentication object on the basis of the result of the comparison; a selection unit that selects, from the extracted features, a plurality of features forming a different combination other than that of the registered features, if the authentication is successfully completed; and a registration unit that registers the selected features as a plurality of registered features to be used in a subsequent authentication of the authentication object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for authenticating an authentication object by comparing features that are extracted from the authentication object with at least one feature that is registered in advance, the system comprising:
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an extraction unit that extracts a plurality of features from the authentication object; an authentication unit that compares the extracted features with at least one feature that is registered in advance in relation to part of the extracted features and authenticates the authentication object on the basis of the result of the comparison; a selection unit that selects, from the extracted features, at feast one feature that is different from the registered feature on the condition that the authentication is successfully completed; and a registration unit that registers the selected feature as a registered feature to be used in the subsequent authentication of the authentication object.
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10. A method for authenticating a user by comparing features that are extracted from the user with features that are registered in advance, the method comprising the steps of:
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extracting a plurality of features from the user; comparing at least some of the extracted features with a previously registered combination of features and authenticating the user on the basis of the 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. - View Dependent Claims (11, 12, 13, 14)
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15. A computer program product comprising a machine readable medium embodying program instructions for authenticating users, said program instructions when loaded into and executed by a computer causing the computer to perform a method comprising the steps of:
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extracting a plurality of features from the user; comparing at least some of the extracted features with a previously registered combination of features and authenticating the user on the basis of the result of the comparison; if the authentication is successfully completed, selecting a new combination of extracted features; and registering the new combination for used in a subsequent authentication of the user. - View Dependent Claims (16, 17, 18, 19)
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Specification