System and method for liveness authentication using an augmented challenge/response scheme
First Claim
Patent Images
1. A system for generating a response from an acquired signal and a challenge, the system comprising:
- an acquisition device for creating a signal representation of said acquired signal; and
a responder that receives said challenge and generates said response that is a function of said signal representation, wherein said function is defined by said challenge.
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Abstract
An integrated signal sensor with processing power to augment a challenge from server and compute the response is proposed to guarantee that the sensed signal is live and not stored. The sensor-processor computes the response to the augmented challenge based on the signal charactersitics of the sensed signal and then transmits both the signal and the response. The host or the server can verify the response to authenticate liveness of the input image/signal and reject it if the response is different. Areas of application include automated biometrics and remote medical imaging.
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Citations
27 Claims
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1. A system for generating a response from an acquired signal and a challenge, the system comprising:
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an acquisition device for creating a signal representation of said acquired signal; and
a responder that receives said challenge and generates said response that is a function of said signal representation, wherein said function is defined by said challenge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for generating a response from an acquired signal and a challenge, comprising the following steps:
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creating a signal representation of said acquired signal;
receiving said challenge; and
creating said response that is a function of the signal representation, wherein said function is defined by said challenge. - View Dependent Claims (13, 14)
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15. A computer product for generating a response from an acquired signal and a challenge that performs the following steps:
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creating a signal representation of said acquired signal;
receiving said challenge; and
creating said response that is a function of the signal representation, wherein said function is defined by said challenge.
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16. A business process for authenticating an acquired signal, the process comprising the steps of:
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creating a signal representation of said acquired signal;
creating a challenge;
creating a response that is a function of the signal representation, wherein said function is defined by said challenge; and
authenticating the signal representation by comparing the response to the function of the acquired signal. - View Dependent Claims (17, 18, 19, 20)
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21. A system for authenticating an acquired signal, comprising:
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a challenge generator for generating a challenge; and
a verifier for authenticating a received signal by comparing a function of the acquired signal, wherein said function is defined by said challenge, to a response generated as a result of said challenge. - View Dependent Claims (22, 23)
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24. A method for authenticating an acquired signal, comprising the following steps:
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creating a challenge; and
authenticating a received signal by comparing a function of the acquired signal, wherein said function is defined by said challenge, to a response generated as a result of said challenge. - View Dependent Claims (25, 26)
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27. A computer product for authenticating an acquired signal that performs the following steps:
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creating a challenge; and
authenticating a received signal by comparing a function of the acquired signal, wherein said function is defined by said challenge, to a response generated as a result of said challenge.
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Specification