Image Sensor Fingerprint Authentication Using Random Projection Coding
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Solution Overview
Problem
Existing authentication systems using temporary passwords or image sensor fingerprints are vulnerable to identity theft, as stolen fingerprints can be replicated for unauthorized access, and existing biometric methods are susceptible to cyberattacks.
Innovation Solution
A method and device that compresses a fingerprint using a random projection algorithm, transmitting a coded version to the authentication system, ensuring the fingerprint is never stored in clear form, and allows authentication without decoding, using a unique seed for each user to prevent replication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fingerprint is stored in clear form on the server side, then authentication can be performed by comparing transmitted fingerprints with stored ones, but the system becomes vulnerable to identity theft attacks where stolen fingerprints can be replicated and used for unauthorized authentication
Solution Approach 1:
The patent extracts only the essential authentication capability from the original fingerprint data by computing a compressed fingerprint representation. This compressed form retains the ability to authenticate the image sensor while removing the detailed information that would allow replication or reverse engineering of the original fingerprint, thus solving the security vulnerability.
Solution Approach 2:
The patent introduces a compressed fingerprint as an intermediary between the original fingerprint and the authentication process. This intermediary form serves as a secure proxy that enables authentication without exposing the original fingerprint data, preventing attackers from obtaining usable fingerprint information even if they compromise the server.
2Measurement precision
If the complete fingerprint data is transmitted and stored, then authentication accuracy can be maintained, but data complexity and storage requirements increase
Solution Approach 1:
The patent segments the fingerprint authentication process into two distinct stages: registration phase where the complete fingerprint is captured and processed, and authentication phase where only the compressed representation is transmitted and compared. This segmentation allows the system to maintain high authentication accuracy while significantly reducing data complexity during the critical authentication operations.
Solution Approach 2:
The patent transforms the fingerprint data from its original high-dimensional form into a compressed low-dimensional representation by changing the data parameters. This parameter transformation preserves the essential authentication characteristics while reducing data complexity, enabling efficient storage and transmission without sacrificing authentication precision.
Data Source
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AI summary
The invention relates to a device (1), a user equipment (2), and methods for registering and authenticating said user equipment (2), wherein said user equipment (2) comprises an image sensor (21), communication means for communicating with said device (1), control and processing means configured for acquiring at least one image by means of said image sensor (21), generating an authentication sensor fingerprint on the basis of said at least one acquired image, coding at least one portion of said authentication sensor fingerprint by means of a random projection algorithm, so as to generate at least one compressed portion (W') of said authentication sensor fingerprint, transmitting, through the communication means, said at least one compressed portion (W') to the device (1).