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A method and system for cracking protection of swf files

A protection system and file technology, applied in digital data protection, instruments, computing, etc., can solve the problems of insufficient security of SWF files and easy cracking of SWF files, and achieve the effect of increasing the difficulty of cracking, increasing the difficulty of cracking, and ensuring security.

Active Publication Date: 2019-04-05
WUHAN DOUYU NETWORK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, existing SWF files written in Action Script (action scripting language) scripts are easy to be cracked, and SWF files are not safe enough to use

Method used

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  • A method and system for cracking protection of swf files

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0022] see figure 1 As shown, the cracking protection method of SWF file in the embodiment of the present invention comprises the following steps:

[0023] S1: Call the C language to write the core SWF file through Action Script in the disk, so that the core logic of the SWF file is not easy to be reversed and decompiled. The file data of the core SWF file is encrypted by an encryption algorithm (the file data that needs to be encrypted is read from the disk to the computer memory, and the file data is encrypted and then rewritten to the disk); the encryption algorithm is AES (Advanced Encryption) in this embodiment. Standard, Advanced Encryption Standard) encryption algorithm, and other encryption algorithms can also be used in practical applications.

[0024] In order to increase the cracking difficulty of the core SWF file, an encryption ...

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PUM

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Abstract

The invention discloses a cracking and protection method and system of an SWF (Small Web Format) file and relates to the field of protection of the SWF files. The method comprises the following steps: encrypting file data of the SWF file through an encryption algorithm to form a core SWF file; writing a protection SWF file containing a decryption code; obtaining the protection SWF file, and decrypting and loading the core SWF file; transmitting a communication message to the protection SWF file at a fixed period by the core SWF file; encrypting the communication message by adopting the encryption algorithm; after receiving the communication message by the protection SWF file, decrypting the communication message by adopting a decryption code; judging whether the core SWF file successfully transmits the communication message or not and whether a time difference between transmitting time and receiving time is smaller than an appointed duration or not; if so, determining that working is abnormal; otherwise, determining that the working is abnormal. According to the cracking and protection method system, the cracking difficulty of the SWF file can be remarkably increased and the safety of the SWF file is guaranteed.

Description

technical field [0001] The present invention relates to the field of protection of SWF files (shock wave flash, vector-based Flash animation files, also known as flash files, mainly used for browser animation, video playback, etc.), in particular to a method for cracking protection of SWF files and system. Background technique [0002] At present, existing video websites (such as online video live broadcast websites) generally use SWF files to play video files, and SWF files integrate video decoding work, including decoding and display functions of live website barrage. In order to prevent the core logic of the video decoding algorithm and the logic of barrage decoding from being used, it is necessary to effectively protect the SWF file. [0003] For SWF files written in Action Script (action scripting language), the script code (equivalent to pseudo-code) corresponding to the SWF file can be decompiled through a decompilation tool (such as AS3Sorcerer), and by reading the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/62
CPCG06F21/6209G06F2221/2107
Inventor 周志刚
Owner WUHAN DOUYU NETWORK TECH CO LTD
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