부산대학교 도서관

Fingerprint is the most widely used biometric authentication system for server based architecture. To prevent the intruder's attacks in a network server both offline and online finger system is the method to improve security and accuracy. In the existing password based systems were designed over a single server, where each user shares a password or some password verification data with a single authentication server. Once an authentication server is compromised, the attackers perform an offline dictionary attacks against the user passwords. The principle is distributing the password database as well as the authentication function to multiple servers, so that an attacker is force to compromise several servers to be successful in offline dictionary attacks. In this system front-end service server interact directly with user and control server behind; it can be robust for the exiting server with biometric features without any additional computation. Here we used fingerprint based authentication system and use some image processing steps to extract finger features for measurements and a new scheme for the identification of a user joining a closed network based on cryptography. The implementation of this new scheme uses elliptical curve based key generation.