DVB/IPTV dual-mode interactive business protection system

An interactive service and protection system technology, applied in the field of information security, can solve the problems of video source security threats, high scrambling intensity, poor scrambling effect, etc.

Active Publication Date: 2014-06-18
COMMUNICATION UNIVERSITY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] For traditional CA systems, video sources are collected and transmitted in plain text, which poses a threat to the security of video sources
In addition, the existing storage methods, whether they are direct storage or encrypted storage of received files,...

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  • DVB/IPTV dual-mode interactive business protection system
  • DVB/IPTV dual-mode interactive business protection system
  • DVB/IPTV dual-mode interactive business protection system

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Embodiment Construction

[0034] The DVB and IPTV interactive service protection system of the present invention includes a client subsystem, a front-end subsystem, an authentication and authorization subsystem, a subscriber management system, a program flow management system, a program information management system and the like. Among them, the client subsystem, front-end subsystem, and authentication and authorization subsystem are the main parts, and the subscriber management system, program stream management system, and program information management system are peripheral auxiliary systems. The system includes three parts: business protection CAServer, authorization management DRMServer, and CAClient module in the client STB. The CAServer server corresponds to the front-end subsystem subsystem, the authorization management DRMServer corresponds to the authentication and authorization subsystem, and the CAClient module in the client STB corresponds to the client. terminal system.

[0035] See attach...

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Abstract

A DVB/IPTV dual-mode interactive business protection system comprises a client end subsystem, a front end subsystem, an authentication authorization subsystem, a subscriber management system, a program stream management system, and a program information management system; the client end subsystem, the CA front end subsystem and the authentication authorization subsystem are the main portion; the subscriber management system, the program stream management system, and the program information management system belong to a peripheral auxiliary system. The DVB/IPTV dual-mode interactive business protection system supports DVB and IPTV video scrambling, provides a controllable scrambling depth control strategy and adaptive scrambling of program content, and supports more than three secret key management modes; secret key length selection above 128 bits and distributed packaging of large size content are realized; the protection system supports safety and business monitoring of the content based on digit watermarking. The DVB/IPTV dual-mode interactive business protection system supports DVB/IPTV dual modes, introduces secret key update batch processing strategy and a distributed authentication authorization scheme, provides secret key real time update and distribution in a million user scale, reduces system overhead, enhances whole secret key updating capacity, improves system safety, and provides a flexible changeable protection mechanism for pay TV business.

Description

technical field [0001] The invention relates to the field of information security, in particular to the key technology of a broadband interactive television system and a two-way asymmetrical digital television system. Background technique [0002] In the construction and development of interactive video systems such as iDTV (interactive digital TV) and IPTV (interactive Internet TV), the protection and control of interactive video service content is becoming an important bottleneck affecting the promotion of interactive video services, which involves content protection, transmission technologies for protection, access control, piracy tracking and content monitoring. [0003] The traditional video service protection system is built on a one-way network. In order to fully transmit important content such as scrambling control words, user authorization information, and management information to the client, the basic idea of ​​layer-by-layer defense is adopted. The system structu...

Claims

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Application Information

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IPC IPC(8): H04N21/254H04N21/266H04N21/4623
Inventor 杨成刘剑波张雅琨侯方天
Owner COMMUNICATION UNIVERSITY OF CHINA
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