Method and a system for biometric identification or verification
First Claim
1. A method for biometric identification or verification of an individual, comprising:
- reading reference biometric information, representing a characteristic inherent to the individual, encrypting the biometric information by means of an encryption key, storing the encrypted reference biometric information as a reference, reading current biometric information from an individual, encrypting the current biometric information by means of an encryption key wherein the encryption is performed by means of an encryption method that retains the correlation between the encrypted information, calculating the correlation between the encrypted current biometric information and the encrypted reference biometric information, comparing the encrypted current biometric information with the encrypted reference biometric information based on said calculated correlation, and deciding, based on said comparison, whether the current biometric information originate from the same individual as the reference biometric information.
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Accused Products
Abstract
A method for biometric identification or verification of an individual includes reading reference biometric information, representing a characteristic inherent to the individual, encrypting the biometric information by means of an encryption key, storing the encrypted reference biometric information as a reference in a database, reading current biometric information from an individual, encrypting the current biometric information by means of an encryption key, comparing the encrypted current biometric information with the encrypted reference biometric information, and deciding, based on said comparison, whether the current biometric information originate from the same individual as the reference biometric information.
54 Citations
17 Claims
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1. A method for biometric identification or verification of an individual, comprising:
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reading reference biometric information, representing a characteristic inherent to the individual, encrypting the biometric information by means of an encryption key, storing the encrypted reference biometric information as a reference, reading current biometric information from an individual, encrypting the current biometric information by means of an encryption key wherein the encryption is performed by means of an encryption method that retains the correlation between the encrypted information, calculating the correlation between the encrypted current biometric information and the encrypted reference biometric information, comparing the encrypted current biometric information with the encrypted reference biometric information based on said calculated correlation, and deciding, based on said comparison, whether the current biometric information originate from the same individual as the reference biometric information. - View Dependent Claims (2, 3, 4, 6, 7, 8, 9)
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5. (canceled)
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10. A computer program product directly loadable into the internal memory of a computer, comprising software code portions for performing the following steps when said product is run on a computer:
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reading reference biometric information, representing a characteristic inherent to the individual, encrypting the biometric information by means of an encryption key, storing the encrypted reference biometric information as a reference, reading current biometric information from an individual, encrypting the current biometric information by means of an encryption key, wherein the encryption is performed by means of an encryption method that retains the correlation between the encrypted information, calculating the correlation between the encrypted current biometric information and the encrypted reference biometric information, comparing the encrypted current biometric information with the encrypted reference biometric information based on said calculated correlation, and deciding based on said comparison, whether the current biometric information originate from the same individual as the reference biometric information.
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11. A computer readable medium having a program recorded thereon, where the program is to make a computer perform the following steps when said program is run on the computer:
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reading reference biometric information, representing a characteristic inherent to the individual, encrypting the biometric information by means of an encryption key, storing the encrypted reference biometric information as a reference, reading current biometric information from an individual, encrypting the current biometric information by means of an encryption key, wherein the encryption is performed by means of an encryption method that retains the correlation between the encrypted information, calculating the correlation between the encrypted current biometric information and the encrypted reference biometric information, comparing the encrypted current biometric information with the encrypted reference biometric information based on said calculated correlation, and deciding, based on said comparison, whether the current biometric information originate from the same individual as the reference biometric information.
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12. A system for biometric identification or verification of an individual, comprising
a biometric information reader, for reading biometric information representing a characteristic inherent to the individual, an encrypting unit for encrypting the read biometric information by means of an encryption key, wherein the encrypting unit is using an encryption method that retains the correlation between the encrypted information, a memory adapted for storing the encrypted biometric information, a comparator for comparing currently read and encrypted biometric information with previously read and encrypted reference biometric information, wherein the comparator comprises means for calculation of the correlation between the encrypted current biometric information and the encrypted reference biometric information, and means for deciding based on said comparison, whether the current biometric information originates from the same individual as the reference biometric information.
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13. (canceled)
Specification