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Encrypting method and device of multimedia document

A multimedia file and encryption method technology, which is applied in the field of multimedia file encryption methods and devices, can solve problems such as slow interactive response, and achieve the effects of ensuring timeliness, saving waiting time, and ensuring data security

Inactive Publication Date: 2017-02-22
深圳市TCL高新技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method and device for encrypting multimedia files, aiming to solve the problem of slow interactive response caused by encrypting multimedia files in smart TVs in the prior art

Method used

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  • Encrypting method and device of multimedia document
  • Encrypting method and device of multimedia document
  • Encrypting method and device of multimedia document

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Embodiment Construction

[0016] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0017] The embodiment of the present invention provides a kind of encryption method of multimedia file, figure 1 It is a flow chart of the encryption method of the multimedia file provided by the embodiment of the present invention, such as figure 1 As shown, the method includes:

[0018] Step S110, read the multimedia file.

[0019] Multimedia files are audio files, video files, etc. that are placed on a server by a content provider for download and playback by a mobile terminal.

[0020] In order to enable the smart TV to play these multimedia files, it is gen...

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Abstract

The invention provides an encrypting method of a multimedia document and an encrypting device of the multimedia document. The method includes steps of reading a multimedia document; identifying file header data in the multimedia document; generating a round secrete key and encrypting Header data through the round secrete key, so as to obtain the encrypted multimedia document. Through encrypting the Header data with small data volume in the multimedia document, the data safety of the multimedia document can be guaranteed, and the promptness of encrypting and decrypting is also guaranteed, thus the multimedia document cannot be stolen; meanwhile, the intelligent television can be timely decrypted when a user hopes to watch the multimedia document, namely, the intelligent television needs not to spend a long time to decrypt the massive encrypted data, and thereby solving the problem of slow interaction response for encrypting the multimedia document in the intelligent television, and saving the waiting time of encrypting and decrypting.

Description

technical field [0001] The invention relates to the communication field, in particular to an encryption method and device for multimedia files. Background technique [0002] As a network terminal device, smart TV has increasingly utilized Internet resources. For example, a smart TV can receive rich video programs on a server through a built-in APP. In this process, the smart TV will download and save multimedia files, such as audio files, video files, etc. These multimedia files can be stored in formats such as MP4 or MP3, and users can easily transfer some copyrighted files to the smart TV through a USB data cable. Multimedia files copied to other places for use or playback. Therefore, it is necessary to protect the multimedia files in the smart TV, such as encrypting the multimedia files, but because these multimedia files are usually relatively large, it takes a long time to encrypt them, and after the user orders the video content, the smart TV will It also takes a lo...

Claims

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Application Information

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IPC IPC(8): H04N21/2347H04N21/4405H04N21/4408
CPCH04N21/23476H04L9/0631H04L9/0643H04N21/4405H04N21/4408
Inventor 王丛华
Owner 深圳市TCL高新技术开发有限公司
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