Method, System, Subscriber Equipment And Multi-Media Server For Digital Copyright Protection

• US 20090041242A1
• Filed: 09/29/2008
• Published: 02/12/2009
• Est. Priority Date: 03/29/2006
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Yang, Jian, Zhao, Qin
• Granted Patent: US 8,510,824 B2
• Time in Patent Office: Days
• US Class Current: 380/255
• 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 2221/2115 Third party
• CPC Class Codes: H04L 2209/603 Digital right managament [DRM]
• CPC Class Codes: H04L 9/0844 with user authentication or key authentication, e.g. ElGamal, MTI, MQV-Menezes-Qu-Vanstone protocol or Diffie-Hellman protocols using implicitly-certified keys
• CPC Class Codes: H04L 9/3213 using tickets or tokens, e.g. Kerberos network architectures or network communication protocols for entities authentication using tickets in a packet data network H04L63/0807
• CPC Class Codes: H04N 21/23895 involving multiplex stream encryption
• CPC Class Codes: H04N 21/2541 Rights Management protecting software against unauthorised usage in a vending or licensing environment G06F21/10; security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08
• CPC Class Codes: H04N 21/26613 for generating or managing keys in general key distribution for secret or secure communication involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP] H04L9/083; network support of key management H04L63/06; key management for network security in communication control or processing H04W12/04
• CPC Class Codes: H04N 21/64322 IP
• CPC Class Codes: H04N 7/1675 Providing digital key or authorisation information for generation or regeneration of the scrambling sequence pseudo-random number generators in general G06F7/58
• CPC Class Codes: H04N 7/17318 Direct or substantially direct transmission and handling of requests

Abstract

A method for digital copyright protection includes stream media server negotiation with a copyright center to generate copyright object RO, RO carrying copyright service regulations and establishing encrypted communication channel information; subscriber equipment receiving RO, through the establishing encrypted communication channel information carried by RO to establish encrypted communication channel with stream media server; and stream media server transmitting media stream to subscriber equipment. The present disclosure also discloses a DRM system, subscriber equipment and multi-media server.

Claims

1. A stream media digital copyright protection method, comprising:

negotiating between a stream media server and a Rights Issuer to generate a Right Object carrying information for establishing an encrypted communication channel;

establishing, by a User Equipment, the encrypted communication channel to the stream media server using the information for establishing the encrypted communication channel carried in the Right Object, upon receipt of the Right Object; and

sending, by the stream media server, a media stream to the User Equipment via the encrypted communication channel.

2. The stream media digital copyright protection method according to claim 1, wherein the encrypted communication channel is established with Internet Protocol Security (IPSec).

3. The stream media digital copyright protection method according to claim 2, wherein the information for establishing the encrypted communication channel carried in the Right Object is authentication information for establishing IPSec communication between the User Equipment and the stream media server.

4. The stream media digital copyright protection method according to claim 3, wherein the establishing the encrypted communication channel further comprises negotiating between the User Equipment and the stream media server to establish a first phase of Security Association of IPSec and a second phase of Security Association of IPSec;

and

wherein, in establishing the first phase of Security Association of IPSec, the authentication information for establishing the IPSec communication carried in the Right Object is used for identity verification of the User Equipment and the stream media server.

5. The stream media digital copyright protection method according to claim 1, wherein the encrypted communication channel established is in a tunneling mode or a transport mode.

6. The stream media digital copyright protection method according to claim 1, wherein the information for establishing the encrypted communication channel carried in the Right Object is copyright use acknowledge information.

7. The stream media digital copyright protection method according to claim 6, wherein the establishing the encrypted communication channel further comprises:

authenticating, by the stream media server, the copyright use acknowledge information provided by the User Equipment; and

negotiating between the stream media server and the User Equipment to establish the encrypted communication channel, after the authentication is passed.

8. The stream media digital copyright protection method according to claim 1, wherein the receipt of the Right Object by the User Equipment further comprises the receipt of the Right Object sent from the Rights Issuer or a Content Issuer.

9. A digital copyright protection method, comprising,

negotiating between a multimedia server and a Rights Issuer to generate a Right Object carrying information for establishing an encrypted communication channel;

establishing, by a User Equipment, the encrypted communication channel to the multimedia server using the information for establishing the encrypted communication channel carried in the Rights Object, upon receipt of the Rights Object; and

sending, by the multimedia server, media data to the User Equipment via the encrypted communication channel.

10. The digital copyright protection method according to claim 9, wherein the information for establishing the encrypted communication channel carried in the Right Object is authentication information for establishing IPSec communication between the User Equipment and the multimedia server.

11. The digital copyright protection method according to claim 10, wherein the establishing the encrypted communication channel further comprises negotiating between the User Equipment and the multimedia server to establish a first phase of Security Association of IPSec and a second phase of Security Association of IPSec;

and

wherein, in establishing the first phase of Security Association of IPSec, the authentication information for establishing the IPSec communication carried in the Right Object is used for identity verification of the User Equipment and the multimedia server.

12. The digital copyright protection method according to claim 9, wherein the encrypted communication channel established is in a tunneling mode or a transport mode.

13. The digital copyright protection method according to claim 9, wherein the information for establishing the encrypted communication channel carried in the Right Object is copyright use acknowledge information.

14. The digital copyright protection method according to claim 13, wherein the establishing the encrypted communication channel further comprises:

authenticating, by the multimedia server, the copyright use acknowledge information provided by the User Equipment; and

negotiating between the multimedia server and the User Equipment to establish the encrypted communication channel, after the authentication is passed.

15. The digital copyright protection method according to claim 9, wherein the receipt of the Right Object by the User Equipment further comprises the receipt of the Right Object sent from the Rights Issuer or a Content Issuer.

16. A digital copyright protection system, comprising a multimedia server and a Rights Issuer, wherein:

the multimedia server is adapted to store media data, negotiate with the Rights Issuer to generate a Right Object carrying information for establishing an encrypted communication channel, negotiate with a User Equipment using the information to establish the encrypted communication channel, and send media data under copyright protection to the User Equipment via the encrypted communication channel; and

the Rights Issuer is adapted to negotiate with the multimedia server to generate the Right Object carrying information for establishing the encrypted communication channel, and send the Right Object to the User Equipment.

17. The digital copyright protection system according to claim 16, further comprising a Content Issuer for providing media information for the User Equipment and instructing the multimedia server and the Rights Issuer to negotiate to generate the Right Object when the User Equipment requests for downloading the media data.

18. The digital copyright protection system according to claim 16, wherein the multimedia server is a stream media server.

19. A digital copyright protection system, comprising a multimedia server, a Rights Issuer and a Content Issuer, wherein:

the multimedia server is adapted to store media data, negotiate with the Rights Issuer to generate a Right Object carrying information for establishing an encrypted communication channel, negotiate with a User Equipment using the information to establish the encrypted communication channel, and send media data under copyright protection to the User Equipment via the encrypted communication channel;

the Rights Issuer is adapted to negotiate with the multimedia server to generate the Right Object carrying the information for establishing the encrypted communication channel; and

the Content Issuer is adapted to provide media information for the User Equipment, instruct the multimedia server and the Rights Issuer to negotiate to generate the Right Object when the User Equipment requests for downloading the media data, and send the Right Object to the User Equipment.

20. The digital copyright protection system according to claim 19, wherein the multimedia server is a stream media server.

21. A multimedia server, comprising,

a media data storage unit adapted to store media data;

a Right Object negotiation unit adapted to negotiate with a Rights Issuer to generate a Right Object carrying information for establishing an encrypted communication channel;

a channel negotiation unit adapted to negotiate with a User Equipment using the information to establish the encrypted communication channel; and

a media data provision unit adapted to provide the media data under copyright protection to the User Equipment via the encrypted communication channel.

22. The multimedia server according to claim 21, wherein the channel negotiation unit is an IPSec driver.

23. A User Equipment, comprising,

a browser adapted to browse media information provided by a Content Issuer and request for downloading media data;

a DRM Agent adapted to obtain information for establishing an encrypted communication channel carried in a received Right Object and establish the encrypted communication channel with a multimedia server using the information; and

a media processor adapted to process the media data transmitted via the encrypted communication channel.

24. The User Equipment according to claim 23, wherein the media processor is a stream media player.

25. The User Equipment according to claim 23, further comprising an IPSec driver, which is adapted to establish the encrypted communication channel to the IPSec driver of the multimedia server using the information for establishing the encrypted communication channel when invoked by the Digital Right Management Agent.