Title: Secure and efficient multibiometric fusion-based cryptosystem using blind separation encryption algorithm

Authors: R. Divya; V. Vijayalakshmi

Addresses: Pondicherry Engineering College, Puducherry, India ' Pondicherry Engineering College, Puducherry, India

Abstract: Multibiometrics is the usage of more than one physiological or behavioural characteristic to identify an individual. Multibiometrics is resilient to spoofing and has low false acceptance rate (FAR). However, multibiometrics requires storage of multiple biometric templates for each user which increase the risk to user privacy and system security. The existing fuzzy logic has several limitations like non-revocability, cross matching and brute force attack. To overcome the above limitations of fuzzy logic, hard fuzzy logic is proposed and implemented for the three biometric features and was simulated. Further authentication is extended to cryptosystem by making use of a novel cryptographic algorithm namely blind separation encryption in which the client and server are authenticated and then the encryption is performed. Discrete wavelet transform (DWT) and sparse representation are implemented to reduce the redundant data and memory space.

Keywords: multibiometric cryptosystems; feature level fusion; fuzzy commitment; hard fuzzy logic; template security; blind separation encryption; sparse representation; cryptography; biometrics; biometric templates; user privacy; simulation; authentication; discrete wavelet transform; DWT.

DOI: 10.1504/IJBM.2016.077827

International Journal of Biometrics, 2016 Vol.8 No.2, pp.97 - 114

Received: 07 Aug 2015
Accepted: 09 Mar 2016

Published online: 16 Jul 2016 *

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