To provide a storage medium issuing method allowing easier issue of a storage medium while maintaining security.

A decryption key, the storage medium storing a decryption program for executing decryption processing using the decryption key, and an encryption key corresponding to the decryption key are sent to a user via different paths. The user encrypts bioinformation inputted by a terminal device/ATM 10 by the encryption key similarly inputted by it, and transmits the encrypted bioinformation to an IC card 50. The storage medium decrypts the encrypted bioinformation by the stored decryption key, and stores it into the storage medium itself.