Performance Comparison Of Biometric System With And Without EVCS : Study Case For Palmprint Authentication System

Biometric nowadays has becomes popular in term of authentication system. Many institutions and companies start to use biometric in addition using password or smartcard to authenticate a person in order to prevent unauthorized person to access their system. As the development of biometric in authentication system, the attackers try to search the vulnerability of it in order to have the authority into the system. One of the vulnerability of the biometric system that the attacker addressed is in the biometric database. Many system of biometric still save the biometric template characteristic in database in the form of plain image. There is no encryption method used to secure the biometric database, which makes easier for the attacker to sabotage the biometric system. This research focuses on how to secure the biometric database using EVCS (Extended Visual Cryptography Scheme). The study is applied on 198 training set palmprint images and 10-validation set of palmprint images. Experiment results showed that EVCS could be used for securing biometric template database without losing much information and the quality of the decrypted image reach 40.95 dB. The authentication system with EVCS also successfully authenticated decrypted image with the percentage of true positive that is 82.45% compared with the one without EVCS that reach 76.89% respectively.