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Method and system for encryption protection of video files

A technology of file encryption and encryption algorithm, applied in the direction of program/content distribution protection, instruments, electronic digital data processing, etc., to prevent content leakage, prevent piracy, and protect copyrights

Inactive Publication Date: 2012-09-26
北京网尚数字电影院线有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the popularization of online video-on-demand, there are more and more infringements and piracy of digital video content. At present, there is no mature technology that can ensure the safe transmission of digital video content and avoid piracy.

Method used

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  • Method and system for encryption protection of video files
  • Method and system for encryption protection of video files
  • Method and system for encryption protection of video files

Examples

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specific Embodiment approach

[0031] Such as figure 2 As shown, it is a specific embodiment of a video file encryption protection method of the present invention, comprising the following steps:

[0032] Step 201, encrypting the video file through a preset encryption algorithm;

[0033] In this step, the encryption algorithm of the film and television files is encrypted using the advanced 256-bit AES algorithm. AES is a symmetric encryption system (private key encryption system), that is, the same key is used for encryption and decryption. Before each encrypted file is encrypted, use a dynamic key generator to randomly generate a 256-bit (32-byte string) key, and use this key to encrypt the file content with AES. And save this key as the license Key (licenseKey) of the program to the certification center. There is a one-to-one correspondence between Licensekey and file ID.

[0034] The encrypted file has an encrypted file header. The header information mainly includes information such as the encrypted ...

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PUM

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Abstract

The invention discloses a method and a system for encryption protection of video files. The method includes firstly, encrypting the video files by the default encryption algorithm; secondly, storing the encrypted video files and file IDs (identities) to an authorization center, and generating a certificate; thirdly, sending the identity of a user to the authorization center to be verified, and requesting the certificate of the video files after the encrypted documents are acquired by a terminal; and fourthly, acquiring the certificate by the terminal after verification passes, and decrypting and playing the encrypted video files by utilizing a secret key included in the certificate. By the method and the system for encryption protection of the video files, protection of copyrights of digitized audio and video program contents can be reinforced, safe propagation of digitized video contents is guaranteed, and piracy is avoided.

Description

technical field [0001] The invention relates to the technical field of digital content version encryption protection, in particular to a method and system for encryption protection of video files. Background technique [0002] With the popularity of online video on demand, there are more and more infringements and piracy of digital video content. At present, there is no mature technology that can ensure the safe transmission of digital video content and avoid piracy. Contents of the invention [0003] The invention proposes a method and system for encrypting and protecting video and video files, which can effectively protect the digital copyright of video and video content during the transmission of video and video content. The invention uses an encryption method to encode and encrypt video and video content, and establishes a video and video content authorization center, and releases the encryption key and program ID information of the video and video files to the authori...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/00G06F21/10
Inventor 黎锋
Owner 北京网尚数字电影院线有限公司
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