Encryption method of playlist and media task of networking information release system

A playlist and information release technology, applied in transmission systems, information storage, digital transmission systems, etc., can solve problems such as not affecting video playback effects

Active Publication Date: 2009-12-30
FUJIAN STAR NET COMM
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide two encryption methods for playlists and media tasks in the networked information distribution system that ensure the legal playback of media resources at the terminal but cannot affect the playback effect of the video

Method used

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  • Encryption method of playlist and media task of networking information release system
  • Encryption method of playlist and media task of networking information release system

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Embodiment Construction

[0039] see figure 1 , is a schematic diagram of the general workflow of the playlist and the encryption method of the media task of the networked information release system of the present invention, the playlist of the networked information release system of the present invention and the encryption method of the media task include the following steps:

[0040] On the platform side:

[0041] Step 1: divide the media file into blocks according to the specified block size;

[0042] Step 2: Then carry out the MD5 operation to each piece of media data after the block, and then form the first MD5 value obtained by carrying out the MD5 operation on each piece of media data to form a first information summary, and use the media file, the first MD5 value of each piece of media data The first information abstract composed of an MD5 value and the first information abstract are stored in the same first file, and the media file, the first information abstract and the first information abs...

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Abstract

The invention relates to an encryption method of a playlist and a media task of a networking information release system. The encryption method comprises the following steps of: carrying out blocking to media files according to the specified size of the blocks, then carrying out MD5 operation to each block of the media files, combining the obtained MD5 values of each block into a section of information, carrying out MD5 operation again to the section of information, putting the final MD5 values into the playlist, and finally carrying out encryption to the playlist; on a terminal, firstly carrying out decryption to the playlist, comparing whether the MD5 values of information abstracts of media files obtained from the playlist are same with the MD5 of the information abstracts formed by all the blocks in the files, if not, prohibiting playing; if so, starting to compare whether the MD5 of each block is same, if so, putting the section of information into a buffer zone to wait for playing; and if no, ending the playing. For small files, the step of blocking can be saved. The encryption method has the advantages of ensuring legal playing of the media resources on the terminal, but having no influence on playing effect of videos.

Description

【Technical field】 [0001] The invention relates to a networked information release system, in particular to an encryption method for playlists and media tasks of the networked information release system. 【Background technique】 [0002] In the existing application of the networked information release system, the media resources are stored in the terminal in the form of source files (unencrypted). The terminal controls the content to be played through the playlist, and the media files are indexed and played according to the file name specified in the playlist. In this way, only the file name of the playlist determines what to play on the terminal, and there is no restriction on the media file itself, so as long as it is a normal file with a matching file name, it can be played. In this way, a problem arises: if the media file of the terminal is replaced by a file with the same name, then the existing networked information distribution system is uncontrollable, and the situatio...

Claims

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Application Information

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IPC IPC(8): G11B20/00H04L9/00
Inventor 王华丽周永森
Owner FUJIAN STAR NET COMM
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