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Multimedia content protection key management method and system

A multimedia content and key management technology, applied in the field of multimedia content protection, can solve problems such as inability to protect 4K multimedia content

Active Publication Date: 2020-03-10
ACADEMY OF BROADCASTING SCI STATE ADMINISTATION OF PRESS PUBLICATION RADIO FILM & TELEVISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This multimedia content protection mode cannot protect 4K multimedia content well

Method used

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  • Multimedia content protection key management method and system
  • Multimedia content protection key management method and system
  • Multimedia content protection key management method and system

Examples

Experimental program
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Embodiment Construction

[0112] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0113] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0114] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

[0115] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have dif...

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Abstract

The invention discloses a multimedia content protection key management method and system. The method comprises the following steps that: a key management device sends routing information of the multimedia content protection key to a key routing device; when the authorization device receives a playing permission request of the to-be-played multimedia content sent by the terminal equipment, the authorization device sends a query request of routing information of a protection key of the to-be-played multimedia content to the key routing device; the key routing device sends routing information ofthe multimedia content protection key to be played to the authorization device; the authorization device sends an application request of the multimedia content protection key to be played to the corresponding key management device according to the routing information of the multimedia content protection key to be played; and the secret key management device finds the multimedia content protectionsecret key to be played according to the identification information of the multimedia content to be played, and sends the encrypted multimedia content protection secret key to be played to the authorization device, so that the authorization device forwards the encrypted multimedia content protection secret key to the terminal device.

Description

technical field [0001] The present invention relates to the technical field of multimedia content protection, more specifically, to a method for managing a multimedia content protection key, a management system for a multimedia content protection key, a key management device, a key routing device, An authorization device, a multimedia content providing device, and a service providing device. Background technique [0002] At present, with the rapid development of multimedia technology, users can watch live or on-demand 4K ultra-high-definition multimedia content through smart terminals. [0003] When users watch 4K multimedia content, they can clearly see every detail and close-up in the picture, and have an immersive viewing experience. Therefore, 4K ultra-high-definition multimedia content is regarded as the next growth point of the media industry and has been recognized. The attention of content providers, service providers and smart terminal equipment manufacturers and o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/254H04N21/266H04N21/235H04N21/2347H04N21/435H04N21/4405H04N21/4623H04N21/4627H04N21/6334H04N21/845H04L9/32H04L9/08
CPCH04L9/0822H04L9/3263H04N21/2347H04N21/2351H04N21/2541H04N21/26606H04N21/26613H04N21/4353H04N21/4405H04N21/4623H04N21/4627H04N21/63345H04N21/8455
Inventor 郭沛宇王磊张乃光沈阳薛子育张智军
Owner ACADEMY OF BROADCASTING SCI STATE ADMINISTATION OF PRESS PUBLICATION RADIO FILM & TELEVISION