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Computers 2019, 8(1), 3; https://doi.org/10.3390/computers8010003

Utilizing Transfer Learning and Homomorphic Encryption in a Privacy Preserving and Secure Biometric Recognition System

Department of Electrical and Computer Engineering, University of Central Florida, Orlando, FL 32816-2362, USA
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Received: 4 December 2018 / Revised: 24 December 2018 / Accepted: 26 December 2018 / Published: 29 December 2018
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Abstract

Biometric verification systems have become prevalent in the modern world with the wide usage of smartphones. These systems heavily rely on storing the sensitive biometric data on the cloud. Due to the fact that biometric data like fingerprint and iris cannot be changed, storing them on the cloud creates vulnerability and can potentially have catastrophic consequences if these data are leaked. In the recent years, in order to preserve the privacy of the users, homomorphic encryption has been used to enable computation on the encrypted data and to eliminate the need for decryption. This work presents DeepZeroID: a privacy-preserving cloud-based and multiple-party biometric verification system that uses homomorphic encryption. Via transfer learning, training on sensitive biometric data is eliminated and one pre-trained deep neural network is used as feature extractor. By developing an exhaustive search algorithm, this feature extractor is applied on the tasks of biometric verification and liveness detection. By eliminating the need for training on and decrypting the sensitive biometric data, this system preserves privacy, requires zero knowledge of the sensitive data distribution, and is highly scalable. Our experimental results show that DeepZeroID can deliver 95.47% F1 score in the verification of combined iris and fingerprint feature vectors with zero true positives and with a 100% accuracy in liveness detection. View Full-Text
Keywords: biometrics; convolutional neural network; deep learning; fingerprint; homomorphic encryption; iris; privacy; transfer learning biometrics; convolutional neural network; deep learning; fingerprint; homomorphic encryption; iris; privacy; transfer learning
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Salem, M.; Taheri, S.; Yuan, J.-S. Utilizing Transfer Learning and Homomorphic Encryption in a Privacy Preserving and Secure Biometric Recognition System. Computers 2019, 8, 3.

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