Contents providing system

• US 7,266,691 B1
• Filed: 10/25/2000
• Issued: 09/04/2007
• Est. Priority Date: 10/25/1999
• Status: Expired due to Fees

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Tanabe, Mitsuru, Ezura, Yuichi, Sato, Ichiro, Ishiguro, Ryuji, Kawakami, Itaru, Ebihara, Munetake
• Primary Examiner(s): Moazzami; Nasser
• Assistant Examiner(s): COLIN, CARL G
• Application Number:
  US09/857,218
• Time in Patent Office: 2,505 Days
• Field of Search: 713/200, 713/155, 713/193, 705/51, 380/203
• US Class Current: 713/168
• CPC Class Codes: G06F 21/10 Protecting distributed programs or content, e.g. vending or licensing of copyrighted material protection in video systems or pay television H04N7/16 ; Digital rights management [DRM]
• CPC Class Codes: G06F 2221/2103 Challenge-response
• CPC Class Codes: G06F 2221/2129 Authenticate client device independently of the user
• CPC Class Codes: G06F 2221/2137 Time limited access, e.g. to a computer or data
• CPC Class Codes: G06F 2221/2153 Using hardware token as a secondary aspect

Abstract

After a reproduction program is installed on a PC, a key for CD ripping is furnished e.g., from an FD. With the key for CD ripping, the music contents in a CD can be copied to a PC, however, it is not possible to download music contents from an EMD server for copying on a PD. For storing the music contents distributed from the EMD server on the PD, the reproduction program first acquired a key for EMD different from the key for ripping over the network. By so doing, the contents data distributed over the network may be improved in safety.

Claims

1. A method for furnishing key data to a data processing apparatus, comprising:

receiving first key data at said data processing apparatus on which a contents reproducing program is installed;

using said first key data to copy first contents data stored originally in a compact disc for storage in said data processing apparatus, and using said first key data to perform authentication between said data processing apparatus and a portable reproducing apparatus connected to said data processing apparatus before transmitting/receiving said first contents data between said data processing apparatus and said portable reproducing apparatus;

receiving second key data at said data processing apparatus, said second key data different from said first key data; and

using said second key data to download the second contents data furnished from said contents server for storage in said data processing apparatus, said second key data also being used to perform authentication between said data processing apparatus and said portable reproducing apparatus before transmitting/receiving said second contents data between said data processing apparatus and said portable reproducing apparatus, wherein

the said portable reproducing apparatus holds the first to ith key data updated in generation from the first generation to the ith generation, where i is an integer not smaller than 2, and

said portable reproducing apparatus and the contents reproducing program performs authentication using an authentication key of the same generation.

2. The method for furnishing key data according to claim 1 wherein the ID information of said portable reproducing apparatus and key data of an ith generation are transmitted to said data processing apparatus and wherein the generation of key data of said portable reproducing apparatus is updated based on the ID information of said portable reproducing apparatus.

3. The method for furnishing key data according to claim 1 wherein

second to ith key data, updated in generation from the second to the ith generation, where i is an integer not smaller than 2, are furnished to said contents reproducing program over a network.

4. The method for furnishing key data according to claim 1 wherein, when accessing is made from said contents reproducing program, key data of a generation newer than the generation of the key data used by said contents reproducing program is furnished to said contents reproducing program to update the generation of the authentication key used by said contents reproducing program.

5. The method for furnishing key data according to claim 1 wherein said first key is a ripping key for ripping contents from a compact disc.

6. The method for furnishing key data according to claim 1 wherein said second key is a server connecting key for downloading contents from a contents server.

7. The method for furnishing key data according to claim 1 wherein said first key data includes a first master key and a first authentication key;

and wherein

said second key data includes a second master key and a second authentication key.

8. The method for furnishing key data according to claim 1 wherein said first key data is furnished from an external storage medium.

9. The method for furnishing key data according to claim 1 wherein said first key data is furnished from a server device.

10. The method for furnishing key data according to claim 1 wherein said second key data is furnished from a server device.

11. A portable reproducing apparatus connected to a data processing apparatus having a contents reproducing program for reproducing contents data, in which contents data furnished from said data processing apparatus is stored in a recording medium for reproduction, wherein

inherent ID information and key data of plural generations are stored in the recording medium of the portable reproducing apparatus from the outset;

first key data supplied to said contents reproducing program in said data processing apparatus and used for storing the contents data furnished from a compact disc connected to said data processing apparatus is used by said portable reproducing apparatus to perform authentication with said data processing apparatus in acquiring contents data stored in said compact disc connected to said data processing apparatus;

and wherein

when said contents reproducing program performs transmission/reception of contents data distributed from a contents server, second key data different from said first key data is furnished to said data processing apparatus over a network;

key data of the same generation as the second key data furnished being used by said portable reproducing apparatus to perform authentication with said data processing apparatus in acquiring the contents data furnished from said contents server to receive said contents data from said data processing apparatus, wherein

said portable reproducing apparatus and the contents reproducing program performs authentication using an authentication key of the same generation.

12. The portable reproducing apparatus according to claim 11 wherein authentication keys of plural generations and master keys of plural generations are stored from the outset.

13. The portable reproducing apparatus according to claim 11 wherein said first key data is a ripping key for ripping contents data from a compact disc and wherein the contents data can be acquired from said compact disc by said ripping key.

14. The portable reproducing apparatus according to claim 11 wherein said second key data is a server connecting key for downloading contents data from a server device and wherein the contents data can be acquired from said server device by said server connecting key.

15. The portable reproducing apparatus according to claim 11 wherein if, in authentication with said contents reproducing program, key data of a generation older than the generation used in said contents reproducing program is used, own key data is updated in generation up to the generation used by said contents reproducing program.

16. The portable reproducing apparatus according to claim 11 wherein first to ith key data, updated in generation from the first to the ith generation, are held, and wherein

key data of the same generation among second to ith key data furnished over a network from said contents reproducing program and updated in generation from the second to the ith generation, where i is an integer not smaller than 2, is used to effect authentication with said contents reproducing program.

17. A recording medium connected to a data processing apparatus having a contents reproducing program for reproducing contents data, in which the recording medium has stored therein a program executed by a portable reproducing apparatus adapted for storing and reproducing contents data furnished by said data processing apparatus, wherein

inherent ID information and key data of plural generations are stored in said portable reproducing apparatus from the outset;

and wherein

the recording medium has stored therein a program for permitting said portable reproducing apparatus in such a manner that

key data of the same generation as first key data supplied to said contents reproducing program in said data processing apparatus and used for storing the contents data in said data processing apparatus furnished from a compact disc connected to said data processing apparatus is used to perform authentication with said data processing apparatus in acquiring contents data stored in said compact disc connected to said data processing apparatus to receive contents data stored in said compact disc;

and wherein

when said contents reproducing program performs transmission/reception of contents data distributed from a contents server, second key data different from said first key data is furnished to said data processing apparatus over a network;

key data of the same generation as the second key data furnished being used by said portable reproducing apparatus to perform authentication with said data processing apparatus in acquiring the contents data furnished from said contents server to receive said contents data from said data processing apparatus.