Faculty Publications
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Publications by NITK Faculty
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Item A novel fingerprint template protection and fingerprint authentication scheme using visual secret sharing and super-resolution(Springer, 2021) Muhammed, A.; Mhala, N.C.; Pais, A.R.Fingerprint is the most recommended and extensively practicing biometric trait for personal authentication. Most of the fingerprint authentication systems trust minutiae as the characteristic for authentication. These characteristics are preserved as fingerprint templates in the database. However, it is observed that the databases are not secure and can be negotiated. Recent studies reveal that, if a person’s minutiae points are dripped, fingerprint can be restored from these points. Similarly, if the fingerprint records are lost, it is a permanent damage. There is no mechanism to replace the fingerprint as it is part of the human body. Hence there is a necessity to secure the fingerprint template in the database. In this paper, we introduce a novel fingerprint template protection and fingerprint authentication scheme using visual secret sharing and super-resolution. During enrollment, a secret fingerprint image is encrypted into n shares. Each share is stored in a distinct database. During authentication, the shares are collected from various databases. The original secret fingerprint image is restored using a multiple image super-resolution procedure. The experimental results show that the reconstructed fingerprints are similar to the original fingerprints. The proposed method is robust, secure, and efficient in terms of fingerprint template protection and authentication. © 2020, Springer Science+Business Media, LLC, part of Springer Nature.Item Secure latent fingerprint storage and self-recovered reconstruction using POB number system(Elsevier B.V., 2023) Muhammed, A.; Pais, A.R.Latent fingerprints are the unintentionally deposited fingerprint impressions gathered from the crime scenes. Many criminal investigation agencies consider latent fingerprints as a significant court accepted evidence. A typical latent fingerprint comes in low quality. Hence, a slight modification in the latent fingerprint may induce a marked shift in the recognition performance. Due to this, wrongdoers behind the crime scenes may try to remove or alter the latent fingerprint information by accessing the fingerprint database. Unlike regular fingerprint enrollment, retaking a latent fingerprint is not always possible. Preserving the latent fingerprints in a single database makes it vulnerable to single-point attacks. Hence, this paper presents a secure way to store and retrieve latent fingerprint information using POB-based (n,n) VSS technique. The proposed method encrypts each latent fingerprint as n secret shares, and stores them in n distinct databases. The distributed storage protects the data from single-point attacks. Along with secure storage, we also introduce a self-recovery mechanism in the case of fingerprint share tampering. The self-recovery mechanism protects the latent fingerprint from different tampering attacks. The proposed method has been evaluated using NIST Special Database4 (NIST-SD4) and IIIT Delhi latent fingerprint datasets. The experimental results show that the proposed technique offers secure distributed storage with lossless reconstruction of latent fingerprint images whenever needed. The proposed self-recovery mechanism enables the recovery of latent fingerprint images even in the case of share tampering. © 2023Item A secure fingerprint template generation mechanism using visual secret sharing with inverse halftoning(Academic Press Inc., 2023) Muhammed, A.; Pais, A.R.Fingerprints are the most popular and widely practiced biometric trait for human recognition and authentication. Due to the wide approval, reliable fingerprint template generation and secure saving of the generated templates are highly vital. Since fingers are permanently connected to the human body, loss of fingerprint data is irreversible. Cancelable fingerprint templates are used to overcome this problem. This paper introduces a novel cancelable fingerprint template generation mechanism using Visual Secret Sharing (VSS), data embedding, inverse halftoning, and super-resolution. During the fingerprint template generation, VSS shares with some hidden information are formulated as the secure cancelable template. Before authentication, the secret fingerprint image is reconstructed back from the VSS shares. The experimental results show that the proposed cancelable templates are simple, secure, and fulfill all the properties of the ideal cancelable templates, such as security, accuracy, non-invertibility, diversity, and revocability. The experimental analysis shows that the reconstructed fingerprint images are similar to the original fingerprints in terms of visual parameters and matching error rates. © 2023 Elsevier Inc.