1. A biometric information registration apparatus, comprising: a registration-purpose biometric information input section which samples, from a registered subject, registration-purpose biometric information to be used for one-to-many authentication and inputs said sampled information; a registration-purpose feature information extracting section which extracts registration-purpose feature information from said registration-purpose biometric information input by said registration-purpose biometric information input section; a registration-purpose attribute information extracting section which extracts, from said registration-purpose biometric information input by said registration-purpose biometric information input section, a plurality of types of registration-purpose attribute information differing from said registration-purpose feature information; and a registration section for registering, in an associated manner, said registration-purpose feature information extracted by said registration-purpose feature information extracting section and said plurality of types of registration-purpose attribute information extracted by said registration-purpose attribute information extracting section.