Information recording device and information reproducing device

An information recording device comprising:

• a contents inputting section configured to receive contents information and license information including first information indicating whether the contents information is officially copied contents information or privately copied contents information;
• a determining section configured to determine whether the contents information is the officially copied contents information or the privately copied contents information based on the first information of the license information;
• an updating section configured to update the license information of the officially copied contents information by changing the license information to license information indicating the privately copied contents information and including information dependent on an identifier of a predetermined recording medium, and
• a recording section configured to record the contents information and the license information updated by said updating section in the predetermined recording medium.

An information reproduction method comprising:

• receiving contents information and license information including information indicating whether the contents information is officially copied contents information or not;
• determining whether the contents information is the officially copied contents information or not based on the license information;
• and
• reproducing the contents information based on a result of determination by said determining, the officially copied contents information being able to be reproduced under a high quality digital reproduction, a low quality digital reproduction, and an analog reproduction and non-officially copied contents information being enable to be reproduced under the high quality digital reproduction.

An information copying method comprising:

• receiving, from a first recording medium, contents information and license information indicating whether the contents information is officially copied contents information, privately copied contents information, or analog contents information and being encrypted by information dependent on the first recording medium;
• decrypting the license information;
• determining whether the contents information is officially copied contents information, privately copied contents information, or analog contents information;
• rewriting the license information of the officially copied contents information to license information indicating one of the officially copied contents information, privately copied contents information, and analog contents information;
• rewriting the license information of the privately copied contents information to license information indicating one of the privately copied contents information and analog contents information,
• rewriting the license information of the analog contents information to license information indicating one of the officially copied contents information, privately copied contents information, and analog contents information;
• encrypting rewritten license information by information dependent on a second recording medium;
• and
• recording a copy of received contents information and corresponding license information in the second recording medium.

An information selling system comprising:

• a server configured to store digital contents information;
• and
• a client configured to request the server of purchasing the digital contents information, wherein
• said client sends a purchase request to the server, the request including an identifier of a desired digital contents information and an identifier of a recording medium in which purchased digital contents information is to be recorded, and
• said server generates a copy of the desired digital contents information, encrypts the copy by the identifier of the recording medium, and sends encrypted copy to the client.