To provide an advanced data storage control device excellent in convenience that enables erasable copy-restricted contents to be not copied but safely moved to other media, while enabling the producer of the contents to prevent illicit copies, and enabling viewers to record and manage the contents in desired media.

When data in one device 1.1 is transferred to the other device 1.2, the data is encrypted within the one device 1.1 using a characteristic encryption key. The encrypted data is sent to the other device 1.2. After the one device 1.1 recognizes that the sending is complete and the data in the one device 1.1 is erased, a decryption key for the encrypted data sent to the other device 1.2 is transferred from the one device 1.1 to the other device 1.2.