Controller to be incorporated in storage medium device, storage medium device, system for manufacturing storage medium device, and method for manufacturing storage medium device

A manufacturing system for manufacturing a storage medium device that includes a controller and a storage device, the manufacturing system comprising:

• a controller manufacturing device configured to generate a controller key, to manufacture a controller in which the generated controller key is embedded, to provide a media assembling device with the generated controller key, and to transmit the controller key to a key issuance center;
• the key issuance center that is authorized and is configured to generate key information used for protection of data stored on the storage medium device, to encrypt the key information by using the controller key to generate encrypted key information, and to issue the encrypted key information to the media assembling device;
• and
• the media assembling device configured to assemble the storage medium device from the controller received from the controller manufacturing device and a storage device, and to input the encrypted key information to the controller, wherein
• the controller includes:
• a holding unit configured to hold the controller key;
• a receiving unit configured to receive the encrypted key information;
• a conversion unit configured to perform conversion on the encrypted key information by using unique information of the controller, thereby generating individually-converted key information;
• and
• a writing unit configured to write the individually-converted key information into the storage device.

A method for manufacturing a storage medium device including a controller and a storage device, the method comprising:

• a controller manufacturing step in which a controller manufacturing device generates a controller key, manufactures a controller in which the generated controller key is embedded, provides a media assembling device with the generated controller key, and transmits the controller key to a key issuance center;
• a key distribution step in which the key issuance center generates key information used for protection of data stored on the storage medium device, encrypts the key information by using the controller key to generate encrypted key information, and issues the encrypted key information to the media assembling device;
• a media assembling step in which the media assembling device assembles the storage medium device from the controller received from the controller manufacturing device and a storage device, and inputs the encrypted key information to the controller;
• a conversion step in which the controller performs conversion on the encrypted key information by using unique information of the controller, thereby generating individually-converted key information;
• and
• a writing step in which the controller writes the individually-converted key information into the storage device.