Encryption device and method for batch SWF (small web format) files in AS3.0 (action script 3.0) scripting

An encryption method and technology of an encryption device, which are applied in the field of video playback, can solve problems such as low efficiency and occupation of hard disk space, and achieve the effect of improving encryption efficiency

Active Publication Date: 2013-07-17
4399 NETWORK
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above method can only encrypt a single SWF file, which is inefficient, and requires the user to download the application file from the Internet, occupying hard disk space

Method used

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  • Encryption device and method for batch SWF (small web format) files in AS3.0 (action script 3.0) scripting
  • Encryption device and method for batch SWF (small web format) files in AS3.0 (action script 3.0) scripting
  • Encryption device and method for batch SWF (small web format) files in AS3.0 (action script 3.0) scripting

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Experimental program
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Embodiment Construction

[0031] figure 1 The flowchart of the first embodiment of the SWF file batch encryption method developed for the AS3.0 scripting language of the present invention, as figure 1 As shown, the SWF file batch encryption method developed by the AS3.0 scripting language provided by the present embodiment is executed by the SWF file batch encryption device developed by the AS3.0 scripting language. Upload source SWF files in batches from the terminal side, encrypt each source SWF file separately, and compress and send the encrypted source SWF files to the local directory of the terminal. The device can be implemented in the form of software and / or hardware, and the method includes:

[0032] Step S100, obtaining the source SWF file uploaded by the user;

[0033] Step S102, analyzing the source SWF file to obtain file header information, judging whether the version type of the source SWF file belongs to the AVM2 type according to the file header information, if the version type of the...

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Abstract

The invention provides encryption device and method for batch SWF (small web format) files in AS3.0 (action script 3.0) scripting. The method includes: acquiring a source SWF file uploaded by a user; analyzing the source SWF file to obtain header information and judging whether the version type of the source SWF file is AVM2 (actionscript version machine 2) or not according to the header information; if yes, locating to a DoABC (defines actionscriptbytecode) tag and a symbolclass tag according to the header information, and subjecting the DoABC tag and the symbolclass tag to obfuscated encryption; and recombining all encrypted tags to generate an encrypted SWF file. The batch SWF files are uploaded to the batch SWF file encryption device for AS3.0 scripting language development by users and are encrypted in batches, so that encrypting efficiency is increased greatly and no disk resource of a client is occupied.

Description

technical field [0001] The invention relates to video playing technology, in particular to a batch encryption method and device for SWF files developed by AS3.0 scripting language. Background technique [0002] SWF file is a special format for Flash. It is an animation file format that supports vector and dot matrix graphics. It is widely used in web design, animation production and other fields. SWF files are also commonly called Flash files. Generally, game developers usually encrypt the SWF files in order to protect the SWF files written by themselves from being embezzled and modified casually. [0003] In the traditional technology, the means of encrypting the SWF file is to download software capable of encrypting from the Internet, and encrypt a single SWF file. However, the above method can only encrypt a single SWF file, which is inefficient, and requires the user to download the application file from the Internet, occupying hard disk space. Contents of the inventi...

Claims

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Application Information

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IPC IPC(8): G06F21/10
Inventor 程思敏
Owner 4399 NETWORK
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