Method of transforming biometric data and verification system thereof

A biometric data converting method and a verification system thereof is provided to generate and store converted biometric feature information and to authenticate an individual on the basis of the converted biometric information in order to solve the problem related to the violation of privacy and the protection of individual biometric information which can occur in case of rubbery and surreptitious uses. A biometric data converting method and a verification system thereof comprises the followings: a biometric signal acquisition part for acquiring biometric signal corresponding to biometric information of user(101); a biometric signal preprocessing part for preprocessing the acquired biometric signal to be suitable to feature extraction(102); an extracting part for extracting more than two kinds of biometric feature information from processed biometric information in each different way(103); a biometric feature information transforming part for generating one transformed biometric feature information by using more than two kinds of extracted biometric feature information(104); a biometric feature information storage part for storing as personal authentication use a user's ID and the biometric feature information converted by the biometric feature information conversion part(105); and a biometric information verification part for identifying and authenticating an individual by comparing the biometric feature information which is transformed by the biometric feature information transforming part and inputted in real-time with the biometric feature information for personal authentication which is stored in the biometric feature information storage part(106).