Sécurité des systèmes multi biométriques

Abstract

Multi-biometric is an emerging technology refers to the use of a combination of two or more biometric modalities to improve the performance of authentication/ identification of individuals. On the other hand, the multi-biometric systems suffer from vulnerabilities due to the impossibility of revoking the biometric model. In the event of theft is a major concern for reasons of confidentiality and security. In order to overcome this problem, we have implemented a protection scheme for multi- biometric systems based on transforming invertible characteristics method "Biohash- ing", which makes it possible to protect the revocable multi-biometric model. We proposed two multimodal systems (with and without protection) that integrate two modalities, namely the face and the fingerprint with a feature level fusion , which is preceded by an extraction based on the Log-Gabor filter. The results obtained show a good robustness of this protection scheme, "Biohashing". Indeed we arrived at an error rate of 0% compared to 18.679% by the other unprotected multimodal biometric system.