Method and system for secure transmission of biometric data
First Claim
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1. A method for preparing a biometric identifier template for transmission over a network, the method comprising:
- extracting a biometric template from a biometric sample image of a biometric identifier;
receiving a current time response from a trusted time server;
forming a transport unit (TU) by appending the current time response as a time stamp to biometric template; and
transmitting the TU over the network to a biometric template matching server.
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Abstract
Embodiments of the invention provide methods and systems for securely transmitting a biometric identifier template across a network using a transport unit formed by appending a trusted time-stamp to the biometric template, and for authenticating such templates based on the time stamp. The method is applicable to fingerprint and other biometric identifier based identification and authentication systems.
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Citations
36 Claims
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1. A method for preparing a biometric identifier template for transmission over a network, the method comprising:
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extracting a biometric template from a biometric sample image of a biometric identifier;
receiving a current time response from a trusted time server;
forming a transport unit (TU) by appending the current time response as a time stamp to biometric template; and
transmitting the TU over the network to a biometric template matching server. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for authenticating a biometric identifier template of a user on a network, the method comprising:
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receiving a Transport Unit (TU), the TU including a time stamp and a biometric template extracted from a biometric sample image of a biometric identifier;
reading the time stamp from the TU;
receiving a current time response from a trusted time server;
comparing the elapsed time between the time stamp and the current time response to a threshold; and
if the elapsed time is less than the threshold, accepting the biometric template. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method for transmitting a biometric identifier template over a network, the method comprising the steps of:
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extracting a biometric template from a biometric sample image of a biometric identifier;
sending a request for a first current time to a first trusted time server;
receiving a first current time response from the first trusted time server;
forming a transport unit (TU) by appending a time stamp of the first current time response to the biometric template;
encrypting the TU;
transmitting the TU over the network to a template matching server;
receiving the TU at the template matching server;
decrypting the TU;
reading the time stamp from the TU;
receiving a second current time response from the first trusted time server or a second trusted time server;
comparing the elapsed time between the time stamp and the second current time response to a threshold; and
if the elapsed time is less than the threshold, accepting the biometric template. - View Dependent Claims (26)
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27. A system for transmitting a biometric identifier template for transmission over a network, the system comprising:
a biometric template matching server to receive a Transport Unit (TU), transmitted over the network from a client, the TU including a biometric template extracted from a biometric sample image of a biometric identifier of a user and a time stamp, to read the time stamp from the TU, to receive a current time response from a trusted time server, to compare the time elapsed between the time stamp and the current time response with a threshold, and, if the elapsed time is less than the threshold, to accept the biometric template for identification processing. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36)
Specification