HYBRID BIOMETRIC AUTHENTICATION DEVICE, HYBRID BIOMETRIC AUTHENTICATION METHOD, AND COMPUTER-READABLE STORAGE MEDIUM WHERE COMPUTER PROGRAM FOR HYBRID BIOMETRIC AUTHENTICATION IS STORED

摘要

Biometric information is subjected to a first feature extraction (S22) and a second feature extraction (S23), a feature compression (S24), and an encryption (S25). Hybrid biometric information is read out of a database (S26). Two sets of information to be authenticated are subjected to a decoding (S27) and a feature decompression (S28). The two sets of biometric information for algorithm A is subjected to a first similarity calculation (S29) so as to calculate similarity A; the two sets of biometric information for algorithm B is subjected to a second similarity calculation (S30) so as to calculate similarity B. The similarity between the determined similarities A, B is calculated by an overall similarity calculation (S31) to perform personal authentication.