A CANCELABLE BIOMETRICS SYSTEM AND METHOD USING MATRICES MULTIPLICATION IN PERMUTED DOMAIN AND USER KEYWORD

摘要

A cancelable biometric system and a method using vector multiplication of a converted matrix and a keyword are provided to enable a user to cancel biometric information of the user by using a global variable, a user-defined weight, and a user-defined replacement matrix as information for biometric recognition, and updating the user-defined replacement matrix with changing a user keyword. An input part(10) receives a biometric image and the keyword of the user, converts the received keyword into a random key string, and provides the replacement matrix from the converted key string. An image replacing part(20) obtains the replaced biometric image of the user by using the replacement matrix. A database(40) stores a template made by the user-defined weight and the user-defined replacement matrix, and the global various replaced with a random master key. A central processor(30) recognizes the user from the replaced image information, and the template and the global variable stored in the database.