Biometric hash matching method and system, in particular fingerprint hash matching method and system

By using a biometric hash matching method, which processes fingerprint data using hash functions and rotation-invariant and translation-invariant features, and combining user passwords and salts, the problems of vulnerability to attack and low matching accuracy in existing systems are solved, thereby improving security and accuracy.

CN121040004APending Publication Date: 2025-11-28COUNCIL FOR SCI IND RES
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Patent Information

Application Number
CN202480029421.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-03-30
Filing Date
2024-04-02
Publication Date
2025-11-28

AI Technical Summary

Technical Problem

Existing biometric matching systems are vulnerable to attacks and have low matching accuracy, especially in fingerprint matching, particularly when there are differences in fingerprint scanning rotation and translation.

Method used

The biometric hash matching method is adopted to convert the user's biometric data into hash values ​​through an appropriate hash function and store the hash values ​​for matching. Rotation-invariant and translation-invariant feature segmentation detail templates are used, and the hash processing is combined with the user's password and salt to reduce the transmission of sensitive information.

Benefits of technology

It improves the security and accuracy of biometric matching, reduces the system's error rate, and especially reduces the risk of reverse engineering in fingerprint matching.

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Abstract

The present invention relates to a biometric hash matching method and system for identifying, verifying or authenticating one or more of applications, in particular, but not necessarily exclusively, for biometrics in the form of fingerprints. In the present disclosure, a plurality of registered hash templates are stored in the form of a database in a memory device communicatively coupled to at least one processor, each registered hash template includes a hash of the registered user password, salt, and fingerprint data associated with the registered user's fingerprint using a suitable hash function. Upon receiving the detected hash template, the detected hash template is compared to one or more registered hash templates stored in a database to determine a match, the detected hash template includes a hash of the detected user password, salt, and fingerprint data associated with the detected user's fingerprint using a suitable hash function.
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Citation Information

Patent Citations

  • Biometric data hashing, verification and security

    US20170085562A1