Controlling the downloading and recording of digital data
View Patent ↗A method and apparatus for enabling a licensed end user to record digital data as described is particularly useful to the music industry as it enables them to make audio data available over the internet but to retain control of the uses to which that audio data can be put. Thus, upon completing a financial transaction to pay for the required audio tracks, the end user is enabled to download and decrypt encrypted music tracks and to play them on the end user's personal computer. The end user can also be allowed to burn a CD including the downloaded music tracks. However, the end user is only enabled to decrypt and record the music tracks onto the CD if the music tracks are recorded together with copy protection.
1. A method, comprising:
receiving a license at an end user device upon completion of a financial transaction between the end user device and a supplier of digital data to have agreed on rights over selected digital data;
the end user device downloading the selected digital data over the Internet and using the selected digital data in accordance with the licensed rights;
the end user device recording the selected digital data onto a data carrier, wherein the selected digital data is made available in encrypted form and the end user device decrypts the selected digital data for licensed use and licensed recording;
providing the selected digital data after its encryption by a key generated by and stored by the end user device, the end user device decrypting the encrypted digital data using the key stored by the end user device;
storing the selected digital data at the end user device with information identifying the licensed rights obtained by the financial transaction, wherein the licensed rights include a right to record the selected digital data; and
generating a request to obtain a further key for use in recording of the selected digital data.
2. The method of claim 1 , wherein the further key is caused to expire once the licensed recording of the selected digital data has been undertaken.
3. The method of claim 2 , further comprising requiring that the selected digital data can only be recorded onto the data carrier together with copy protection for the selected digital data.
4. The method of claim 3 , wherein the copy protection for the selected digital data comprises a digital signature and a verification routine requiring access to the digital signature.