AMB-FHE: Adaptive Multi-biometric Fusion with Fully Homomorphic Encryption

• URL: http://arxiv.org/abs/2503.23949v1
• Date: Mon, 31 Mar 2025 11:00:08 GMT
• Title: AMB-FHE: Adaptive Multi-biometric Fusion with Fully Homomorphic Encryption
• Authors: Florian Bayer, Christian Rathgeb,
• Abstract summary: We present an adaptive multi-biometric fusion with fully homomorphic encryption (AMB-FHE)<n>AMB-FHE is benchmarked against a bimodal biometric database consisting of the CASIA iris and MCYT fingerprint datasets.
• Score: 3.092212810857262
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Biometric systems strive to balance security and usability. The use of multi-biometric systems combining multiple biometric modalities is usually recommended for high-security applications. However, the presentation of multiple biometric modalities can impair the user-friendliness of the overall system and might not be necessary in all cases. In this work, we present a simple but flexible approach to increase the privacy protection of homomorphically encrypted multi-biometric reference templates while enabling adaptation to security requirements at run-time: An adaptive multi-biometric fusion with fully homomorphic encryption (AMB-FHE). AMB-FHE is benchmarked against a bimodal biometric database consisting of the CASIA iris and MCYT fingerprint datasets using deep neural networks for feature extraction. Our contribution is easy to implement and increases the flexibility of biometric authentication while offering increased privacy protection through joint encryption of templates from multiple modalities.

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