Digital media content protection method and apparatus

A technology of digital media and content, applied in the field of communication, can solve the problems of cumbersome analysis and processing, cumbersome operation process, low efficiency, etc., and achieve the effect of simple and clear structure, improved operation efficiency, and loose data coupling

Active Publication Date: 2016-01-27
ACADEMY OF BROADCASTING SCI STATE ADMINISTATION OF PRESS PUBLICATION RADIO FILM & TELEVISION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wide variety of content usage rights and the different restrictions corresponding to each usage right make the operation process of each license formation very cumbersome
At the same time, the client must also perform cumbersome analysis and processing of these

Method used

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  • Digital media content protection method and apparatus
  • Digital media content protection method and apparatus
  • Digital media content protection method and apparatus

Examples

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Embodiment Construction

[0029] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] Such as figure 1 As shown, the embodiment of the present invention provides a kind of digital media content protection method, based on server, described method may comprise the following steps:

[0031] S11. Build an authorization structure, the authorization structure includes at least one licensed entity, and each licensed entity includes: resources, resource receivers, key information, and key usage rules corresponding to the key information; The key information includes the general information of the key at this level and the key identification of the upper key used to encrypt the key at this level; the authorization structure is used to Use rules, authorizin...

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PUM

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Abstract

The invention discloses a digital media content protection method and an apparatus and relates to the digital media technology field. By using the method, operation efficiency of digital media content protection can be effectively increased. The method comprises the following steps of constructing an authorization structure body, wherein the authorization structure body comprises at least one licensed entity; each licensed entity includes a resource, a resource receiving party, secret key information and a secret key usage rule corresponding to the secret key information; the secret key information comprises general situation information of a secret key at a level and a secret key identification used for encrypting a secret key at a previous level of the secret key at the level; the authorization structure body is used for authorizing the resource to the resource receiving party for usage according to the secret key usage rule in each licensed entity; sending the authorization structure body to a user so that the user uses a client private key to decrypt each level of the secret key of the authorization structure body, and then acquiring a usage authority of the resource. The method and the apparatus are suitable for various kinds of digital media files which need to carry out content protection.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a digital media content protection method and device. Background technique [0002] In order to protect the copyright of digital media, it is usually necessary to encrypt the digital media content with a content key, and then send the content encryption key and the use right information of the media content to the legitimate user in a secure manner. The provision uses a content key to decrypt digital media content. [0003] In the prior art, rights description technology is generally used to control content use rights, where use rights may include operation rights such as preview, play, storage, move, copy, and super-distribution. Generally, the use of each right has corresponding restrictions, for example, preview can only be performed within a certain period of time, or playback can only be performed before a certain deadline. In this way, since the services ordered by...

Claims

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Application Information

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IPC IPC(8): H04L9/08H04L29/06G06F21/10
Inventor 王磊郭沛宇郭晓霞沈阳梁晋春姚颖颖席岩
Owner ACADEMY OF BROADCASTING SCI STATE ADMINISTATION OF PRESS PUBLICATION RADIO FILM & TELEVISION
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