Confidential information setting method, confidential information setting system, and confidential information setting apparatus

A system for setting confidential information, comprising:

• a server, a user apparatus, and a confidential information storage apparatus,
• wherein the server includes a memory unit that stores an encrypted secret key, an encryption key, and condition information which is a condition for setting the secret key to a terminal;
• wherein the user apparatus includes:
• a communication unit that acquires the encrypted secret key from the memory unit of the server and acquires a terminal ID, which is an identifier for uniquely identifying the terminal, from the terminal;
• and
• a memory unit that stores the acquired information;
• and
• wherein the confidential information storage apparatus includes:
• a communication unit that acquires the encryption key and the condition information from the memory unit of the server and acquires the terminal ID and the secret key, which is associated with the terminal ID and encrypted, from the memory unit of the user apparatus;
• an encryption processing unit that decrypts the encrypted secret key with the encryption key;
• and
• a control unit that determines whether the decrypted secret key can be transmitted to the terminal based on the condition information and transmits the secret key to the terminal upon determining a result of the judgment indicates that the secret key can be transmitted to the terminal.