Abstract
Biometric authentication is gaining popularity in the current scenario. Biometric based authentication is the science of using physical or behavioral characteristic for ensuring that the person is the claimed identity. Biometric authentication system is also vulnerable to attacks in various phases. The biometric data stored in the template has to be protected, since variety of attacks like circumvent, covert acquisition affects the normal functioning of the system. An attacker may create new biometric data or steal the template or modify the template. Once the biometric template is compromised then the entire system is lost. So securing biometric template is an important aspect in biometric authentication system. In this study ear biometric template is secured by a new method of generating bio key from the ear fused template. Here the transformed template is stored in the database. During verification phase, for the new biometric sample a bio key is generated. Using this bio key the person is authenticated if the transformed feature generated is matched with the stored one. Hence the template is protected with the bio key. The authenticated person alone can access the system, since the key to decrypt the encrypted template is obtained from the ear trait of the authenticated person. FAR and FRR are used to evaluate the system performance.
Highlights
Traditional authentication systems based on passwords and cryptographic keys are less secure than biometrics, since the characteristics of biometrics are associated with an individual
The bio key is generated from the fused image as discussed in the previous section and that key is used as the secret key in the AES -128 algorithm to encrypt the fused template
Security of the template is considered and the template is here protected in the first method by the process of encryption where the False Acceptance Rate (FAR) is 0, the system is good for authentication since it doesn’t allow any non-genuine users into the system
Summary
Traditional authentication systems based on passwords and cryptographic keys are less secure than biometrics, since the characteristics of biometrics are associated with an individual. In the field of biometrics, a lot of research works are being carried out to generate biometric authentication systems with improved accuracy and security. Emerging trend in the field of biometric is authentication using features of ear. Ear image acquisition is perceived as less invasive. Ear structure does not vary with ageing and it is more stable. Expressions due to emotions do not affect ear
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