Biometrics authentication method and biometrics authentication device
First Claim
1. A biometrics authentication device for verifying a detected biometrics characteristics data against a registered biometrics characteristic data, comprising:
- an image capture device, which captures an image of a living body part, scrambles and transmits the image;
an IC card reader/writer, which reads and writes an IC card storing comparatively coarse first biometrics characteristic data and comparatively fine second biometrics characteristic data of a user; and
a control unit, which descrambles said scrambled captured image from the image capture device, receives scrambled first biometrics characteristic data from said IC card, performs primary verification of said captured image with said first biometrics characteristic data, creates final verification data, and scrambles and transmits to said IC card said final verification data, and wherein said IC card descrambles said scrambled final verification data, and performs secondary verification with said stored second biometrics characteristic data.
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Accused Products
Abstract
A biometrics authentication device uses biometrics information to perform individual authentication. Primary and secondary verification of biometrics characteristic data from an image capture device are performed by a control unit and IC card. The biometrics character data is scrambled and transmitted between devices. The second registration data which is more important to authentication is stored within the IC card, and first registration data is registered in the IC card in a scrambled state. Security is improved, and moreover the load on the CPU of the IC chip in the IC card is reduced.
45 Citations
12 Claims
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1. A biometrics authentication device for verifying a detected biometrics characteristics data against a registered biometrics characteristic data, comprising:
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an image capture device, which captures an image of a living body part, scrambles and transmits the image;
an IC card reader/writer, which reads and writes an IC card storing comparatively coarse first biometrics characteristic data and comparatively fine second biometrics characteristic data of a user; and
a control unit, which descrambles said scrambled captured image from the image capture device, receives scrambled first biometrics characteristic data from said IC card, performs primary verification of said captured image with said first biometrics characteristic data, creates final verification data, and scrambles and transmits to said IC card said final verification data, and wherein said IC card descrambles said scrambled final verification data, and performs secondary verification with said stored second biometrics characteristic data. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A biometrics authentication method for verifying detected biometrics characteristic data from a living body against registered biometrics characteristic data for individual authentication of a user, comprising the steps of:
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capturing an image of said living body, and scrambling and transmitting the captured image to control unit;
descrambling said transmitted scrambled captured image into said control unit;
receiving comparatively coarse first biometrics characteristic data of a user, in a scrambled state, from said IC card;
performing primary verification of said captured image with said first characteristic data, and creating final verification data into said control unit;
scrambling and transmitting to said IC card said final verification data; and
descrambling said final verification data, and performing secondary verification with said stored second characteristic data, in said IC card. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification