Security system and method for security certification thereof, method of generating relative character information, terminal system, and smart card
First Claim
1. A security system performing security certification, comprising:
- a terminal system; and
a smart card,the terminal system configured to generate relative fingerprint information and absolute fingerprint information of a user, determine a similarity between the relative fingerprint information and a registered relative fingerprint information transmitted from the smart card to generate final variation information, and apply the final variation information to the absolute fingerprint information to generate modified user absolute fingerprint information, andthe smart card configured to determine a similarity between the modified user absolute fingerprint information transmitted from the terminal system and registered absolute fingerprint information to perform a certification operation,wherein the registered relative fingerprint information is derived from the registered absolute fingerprint information and the registered absolute fingerprint information identifies the owner of the smart card.
1 Assignment
0 Petitions
Accused Products
Abstract
A security system is provided. The security system includes a terminal system and a smart card. The terminal system generates relative fingerprint information of a user from absolute fingerprint information of the user, determines a similarity between the generated relative feature information of the user and registered relative fingerprint information of a smart card owner transmitted from the smart card to generate variation information, and applies the variation information to the user absolute fingerprint information to generate modified user absolute fingerprint information. The smart card determines the similarity between the modified user absolute feature information and registered absolute feature information of the smart card owner to perform a certification operation.
7 Citations
36 Claims
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1. A security system performing security certification, comprising:
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a terminal system; and a smart card, the terminal system configured to generate relative fingerprint information and absolute fingerprint information of a user, determine a similarity between the relative fingerprint information and a registered relative fingerprint information transmitted from the smart card to generate final variation information, and apply the final variation information to the absolute fingerprint information to generate modified user absolute fingerprint information, and the smart card configured to determine a similarity between the modified user absolute fingerprint information transmitted from the terminal system and registered absolute fingerprint information to perform a certification operation, wherein the registered relative fingerprint information is derived from the registered absolute fingerprint information and the registered absolute fingerprint information identifies the owner of the smart card. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 35)
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15. A security certification method comprising:
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generating user absolute feature information and user relative feature information from fingerprint information of a user; generating final variation information based on a similarity between the user relative feature information and registered relative feature information transmitted from a smart card; applying the final variation information to the user absolute feature information to generate modified user absolute feature information; and certifying the user as the owner of the smart card when a similarity between the modified user absolute feature information and registered absolute feature information of the smart card owner exceeds a predetermined threshold. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 36)
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24. A terminal system comprising:
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a feature information conversion generator configured to generate relative fingerprint information of a user from absolute fingerprint information of the user; a main comparison engine configured to determine a similarity between the relative fingerprint information and a registered relative fingerprint information transmitted from the smart card to generate final variation information according to the similarity determination result; and a user absolute feature information unit configured to generate modified user absolute fingerprint information by applying the final variation information to the user absolute fingerprint information. - View Dependent Claims (25, 26, 27, 28, 29)
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30. A smart card comprising:
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a storage unit storing registered absolute feature information of a smart card owner and registered relative feature information, generated from the registered absolute feature information, wherein the absolute feature information comprises a set of absolute feature points including end points or diverging points of ridges of a fingerprint, and the relative feature information comprises a set of relative feature points including a centroid, an incenter, the circumcenter, an orthocenter, or an excenter of the three adjacent absolute feature points; and a sub comparison engine determining a similarity between modified user absolute feature information and the registered absolute feature information, wherein the modified user absolute feature information is generated by applying final variation information obtained from determining a similarity between the registered relative feature information and user relative feature information; and a certifier to certify the user as the smart card owner when the similarity between modified user absolute feature information and the registered absolute feature information exceeds a predefined threshold. - View Dependent Claims (31, 32)
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33. A terminal system comprising:
a fingerprint image acquirer configured to obtain a fingerprint of a user and create a fingerprint image; a feature information conversion generator configured to generate relative fingerprint information and absolute fingerprint information from the fingerprint image; a main comparison engine configured to determine a similarity between the relative fingerprint information and a registered relative fingerprint information transmitted from the smart card to generate final variation information according to the similarity determination result; and a user absolute feature information unit configured to generate modified user absolute fingerprint information by applying the final variation information to the user absolute fingerprint information.
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34. A smart card comprising:
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a storage unit storing registered absolute fingerprint information of a smart card owner and registered relative fingerprint information, generated from the registered absolute fingerprint information; a sub comparison engine determining a similarity between modified user absolute fingerprint information and the registered absolute fingerprint information, wherein the modified user absolute fingerprint information is generated by applying final variation information to user absolute fingerprint information, the final variation information obtained from determining a similarity between the registered relative feature information and user relative fingerprint information generated from the user absolute feature information; and a certifier to certify the user as the smart card owner when the similarity between modified user absolute fingerprint information and the registered absolute fingerprint information exceeds a predefined threshold.
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Specification