Performance enhancement of symmetric hashed fingerprint template using dynamic threshold matching algorithm
by S. Ajish; K.S. AnilKumar
International Journal of Biometrics (IJBM), Vol. 15, No. 1, 2023

Abstract: The fingerprint template protection is strenuous among other biometric template protections because the fingerprint template stores the minutiae points as security enhancement of the fingerprint template and results in the degradation of the matching performance. The modified symmetric hash method uses a secret key as a multiplication parameter for the hashing of the fingerprint biometric template. The irreversibility and unlikability analysis of the modified symmetric hashed fingerprint template exhibits better security. The multiplication of the fingerprint minutiae template by a secret key mitigates the accuracy of matching performance. This paper proposes a dynamic threshold matching algorithm in which the threshold values are derived from the secret key. Experimental results on FVC 2004 database show that the combination of modified symmetric hash function and the dynamic threshold matching algorithm prompt better security and excellent matching performance.

Online publication date: Thu, 15-Dec-2022

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