Fuzzy Vault Encoding with Secondary Elements
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Solution Overview
Problem
Existing Fuzzy Vault encoding methods do not securely integrate secondary information, which can impact authentication performance and security, particularly in biometric applications.
Innovation Solution
An electronic encoding method that generates encoded elements using a polynomial function, incorporating both main and secondary elements, where each encoded element includes simulated components to enhance security and authentication precision, allowing for the integration of multiple secondary elements per primary element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If secondary information is integrated into Fuzzy Vault encoding using existing methods, then authentication performance may be improved, but security is compromised because the integration is not secure
Solution Approach 1:
The patent embeds secondary information elements within the encoded elements structure, nesting them alongside main element evaluations. Each encoded element contains both main element data and secondary information, creating a nested structure where secondary information is securely integrated within the existing Fuzzy Vault framework rather than added separately
Solution Approach 2:
The patent divides encoded elements into distinct components: main element evaluations and secondary information elements. This segmentation allows each type of information to be processed and protected appropriately, with secondary information being securely integrated through structured positioning within the encoded element framework
2Measurement precision
If more polynomial evaluations are performed to improve authentication performance, then precision is improved, but computational complexity increases
Solution Approach 1:
The patent performs polynomial evaluations at more points than the minimum required for interpolation (excessive action), evaluating at both main element indexes and secondary information indexes. This provides redundant information that improves authentication precision by allowing more verification points while the systematic structure manages the computational load
3Object-affected harmful factors
If noise is increased to improve security, then security is improved, but authentication performance may deteriorate
Solution Approach 1:
The patent applies different qualities of noise and encoding to different parts of the data structure. Main elements and secondary information elements are encoded with appropriate levels of protection and noise, allowing security-critical portions to have higher noise levels while maintaining authentication performance through the structured organization of encoded elements
Data Source
AI summary
The description relates in particular to a method for encoding information represented as a function P, and to a corresponding method for decoding information. The encoding includes the encoding of secondary information. These methods can be implemented in the context of biometric enrollment and (respectively) biometric authentication. The description also concerns an electronic device, a computer program, and a storage medium for implementing such methods.