Distance-Based Biometric Proof Encoding Against False Acceptance
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Solution Overview
Problem
Current biometric authentication and identification methods are vulnerable to false acceptance when an imposter steals a user's mobile device and submits a proof biometric characteristic to access services, compromising confidentiality and security.
Innovation Solution
An encoding method and terminal generate a biometric proof template based on a distance metric between the biometric characteristic and a reference characteristic, using a noise generation function and a neural network, to create a secure and randomized template that reduces the risk of false acceptance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If biometric authentication uses a stolen mobile device with imposter biometric data, then the device can access services, but security and confidentiality are compromised due to false acceptance
Solution Approach 1:
The patent introduces an encoding terminal as an intermediary between the biometric sensor and the authentication database. This terminal encodes the biometric template using a distance metric before transmission, creating an additional security layer that prevents direct use of stolen biometric data for authentication
Solution Approach 2:
The patent transforms the biometric template by applying an encoding function based on distance metric to a reference biometric characteristic. This parameter transformation ensures that even if the original biometric data is stolen, it cannot be directly used for authentication without the proper encoding key and reference template
2Ease of operation
If biometric templates are transmitted in raw or template form, then authentication can be performed, but confidentiality is compromised due to potential theft and identity fraud
Solution Approach 1:
The encoding terminal acts as a mediator that transforms biometric templates into encoded form before transmission. The terminal applies an encoding function using distance metric to reference biometric characteristics, ensuring confidentiality while maintaining authentication functionality
Solution Approach 2:
The patent creates an encoded copy of the biometric template rather than transmitting the original. This encoded copy contains the necessary authentication information but is protected against theft and misuse, as it cannot be directly used without the corresponding reference template and decoding capability
Data Source
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AI summary
A method (800, 900, 1000, 11000) for encoding, implemented by an encoding terminal (102, 300), of a biometric template (803, 903, 1003, 1103) for testing (GE-Bio), said method takes, as input data, a biometric characteristic (801, 901, 1001, 11001) for testing (CE-Bio), and provides, as output data, a biometric template (803, 903, 1003, 1103) for testing (GE-Bio), in which the biometric template (803, 903, 1003, 1103) for testing (GE-Bio) is generated from the biometric characteristic (801, 901, 1001, 1101) of test (CE-Bio) according to an encoding scheme (802, 902, 1002, 1102) representative of the distance (802a, 902a, 1002a, 11002a), d(CE-Bio, CR-Bio), according to a metric between the biometric characteristic (801, 901, 1001, 1101) of test (CE-Bio) and a biometric characteristic (802b, 902b, 1002b, 1102b) of reference (CR-Bio).