Patent attributes
A personal computer PC transmits to a server encoded user information and encoded license information, etc. contained in a secure recording medium. The server decodes the encoded license information to obtain license information. Then, the server deletes the encoded license information contained in the secure recording medium via the personal computer PC. The server decodes the decoded user information contained in a secure recording medium to obtain user information. Then, the server encodes the license information based on the user information to write the obtained encoded license information into the secure recording medium via the personal computer PC. In this manner, license information can be moved between two secure media and convenience can be improved.