Blockchain technology, which was introduced for supporting cryptocurrencies, today provides a decentralized in- frastructure for general information storage and execution of algorithms, thus enabling the conversion of many applications and services from a centralized and intermediated model to a decentralized and disintermediated one. In this paper we focus on biometric authentication, which is classically performed using centralized systems, and could hence benefit from decentraliza- tion. For such a purpose, however, an inherent contradiction between biometric applications and blockchain technology must be overcome, as the former require keeping biometric features private, while blockchain is a public infrastructure. We propose a blockchain-based biometric authentication protocol that enables decentralization and resilience while protecting the privacy, personal data, and, in particular, biometric features of users. The protocol we propose leverages fuzzy commitment schemes to allow biometric authentication to be performed without disclosing biometric data. We also analyze the security of the protocol we propose by considering some relevant attacks.

Decentralized Biometric Authentication based on Fuzzy Commitments and Blockchain / ABO ALZAHAB, Nibras; Rafaiani, Giulia; Battaglioni, Massimo; Chiaraluce, Franco; Baldi, Marco. - ELETTRONICO. - (2025), pp. 64-72. (Intervento presentato al convegno 6th International Conference on Blockchain Computing and Applications (BCCA 2024) tenutosi a Dubai, UAE nel 26–29 November, 2024) [10.1109/BCCA62388.2024.10844492].

Decentralized Biometric Authentication based on Fuzzy Commitments and Blockchain

Nibras Abo Alzahab;Giulia Rafaiani;Massimo Battaglioni;Franco Chiaraluce;Marco Baldi
2025-01-01

Abstract

Blockchain technology, which was introduced for supporting cryptocurrencies, today provides a decentralized in- frastructure for general information storage and execution of algorithms, thus enabling the conversion of many applications and services from a centralized and intermediated model to a decentralized and disintermediated one. In this paper we focus on biometric authentication, which is classically performed using centralized systems, and could hence benefit from decentraliza- tion. For such a purpose, however, an inherent contradiction between biometric applications and blockchain technology must be overcome, as the former require keeping biometric features private, while blockchain is a public infrastructure. We propose a blockchain-based biometric authentication protocol that enables decentralization and resilience while protecting the privacy, personal data, and, in particular, biometric features of users. The protocol we propose leverages fuzzy commitment schemes to allow biometric authentication to be performed without disclosing biometric data. We also analyze the security of the protocol we propose by considering some relevant attacks.
2025
979-8-3503-5153-8
File in questo prodotto:
File Dimensione Formato  
Decentralised_Biometric_Paper (1).pdf

accesso aperto

Tipologia: Documento in post-print (versione successiva alla peer review e accettata per la pubblicazione)
Licenza d'uso: Tutti i diritti riservati
Dimensione 489.52 kB
Formato Adobe PDF
489.52 kB Adobe PDF Visualizza/Apri
Decentralized_Biometric_Authentication_based_on_Fuzzy_Commitments_and_Blockchain.pdf

Solo gestori archivio

Descrizione: Versione editoriale
Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza d'uso: Tutti i diritti riservati
Dimensione 427.29 kB
Formato Adobe PDF
427.29 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11566/337792
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? ND
social impact