Data distribution system

Is supplied to the memory card 110 in the dialogue Key Ks extracted data bus BS3 by the decryption process by the mobile phone network from the server. The encryption processing unit 1406 dialogue Key Ks to the memory card public encryption key KPcard 110 (1) and provided to the encryption server via data bus BS3. Register 1500 receive and store the decrypted data permission ID, user ID from the server, receiving from the memory 1412 and stored in accordance with the data bus BS3 Key Kc encrypted license encrypted content data [Dc] Kc.