Digital copyright protecting method and system
A digital copyright protection and copyright technology, applied in digital transmission systems, analog security/charging systems, transmission systems, etc., can solve problems such as increasing user equipment overhead, reduce the risk of media streams, reduce requirements, and improve security. Effect
Active Publication Date: 2009-01-21
HUAWEI TECH CO LTD
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Problems solved by technology
[0017] The purpose of the present invention is to overcome the problem that the decryption process of the existing media flow is completed by the application layer of the user equipment and increase the user equipment overhead, and to provide a streaming media digital copyright protection method based on IPSec
Method used
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[0050] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0051] The invention provides an IPSec-based stream media digital rights management scheme. In this scheme, instead of encrypting the media stream, the logical channel between the stream media server and the user equipment is encrypted. In this solution, what is stored in the RO is not the logical channel key itself, but the authentication information for establishing an IPSec channel between the user equipment and the streaming media server, such as image 3 shown.
[0052] See the specific interaction process Figure 4 .
[0053] Step 41, the user equipment connects to the webpage of the content center CI, finds and requests to download the streaming media of interest;
[0054] Step 42, CI generates Token;
[0055] Step 43, CI sends Token to RI and user equipment;
[0056]Step 44, the streaming media server negotiates with the RI to g...
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The present invention discloses digital copyright protection method, which includes: stream media server negotiation with copyright center to generate copyright object RO, RO carrying copyright service regulations and establishing encrypted communication channel information; subscriber equipment receiving RO, through said establishing encrypted communication channel information carried by RO to establish encrypted communication channel with stream media server; stream media server transmitting media stream to subscriber equipment. The present invention also discloses DRM system, subscriber equipment and multi-media server. Through encrypting logical channel rather than encrypting media stream itself, the present invention avoids additional decrypting media stream consumption in application layer of terminal end, reduces terminal equipment performance requirement and meets subscriber's taste. Moreover, through establishing exclusive logical channel between terminal equipment and stream media server, the present invention also reduces risk of intercepting and capturing media stream by third party and raises end-to-end communication security.
Description
technical field [0001] The invention relates to a digital copyright protection method and device, in particular to a streaming media digital copyright protection method and device. Background technique [0002] In recent years, the application of streaming media technology based on broadband wired network has made great progress, and the technology of streaming media based on mobile communication network is also becoming more and more mature. [0003] Streaming media is a media format transmitted over the network by streaming. Streaming media does not need to download the entire file before playing, but only stores the beginning part of the content in the memory, and caches the data packets in the user terminal so that the media data can be output correctly. In the streaming transmission side, the user does not have to wait until the entire media file is downloaded, but only needs a few seconds or tens of milliseconds of start-up delay to watch, and the rest of the file wil...
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IPC IPC(8): H04L29/06G06F21/00
CPCH04L9/3213H04N21/26613H04N7/17318H04L9/00H04L9/0844H04N21/2541G06F2221/2115H04N21/23895H04N21/64322G06F21/10H04N7/1675H04L2209/603G06F21/00H04N7/16
Inventor 杨健赵琴
Owner HUAWEI TECH CO LTD