Method for protecting png picture in handheld device

A technology for handheld devices and pictures, applied in the direction of digital data protection, etc., can solve the problem of low encryption and decryption of png pictures, and achieve the effect of protecting creative achievements

Inactive Publication Date: 2013-08-21
GCI SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to overcome the existing problem of low encryption and decryption of png pictures, and propose a method for protecting png pictures in handheld devices, which prevents them from ...

Method used

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  • Method for protecting png picture in handheld device
  • Method for protecting png picture in handheld device

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0021] figure 1 It is a flowchart of a png image protection method in a handheld device, and the specific steps are:

[0022] 1. Package the original image by using the image packaging tool, and compile the image resource into a binary data file in a custom format;

[0023] 1) First divide the pictures into several groups, and then use the picture packaging tool to package each group of pictures into a picture package with the extension of JPM.

[0024] 2) Then compile the above image resource package into a binary data file in a custom format. For example, the binary data bits obtained by a resource pack

[0025] 10011000110000000000000100000000001000111110011011

[0026] 2. Then use the encryption tool to encrypt the binary image data file. The encryption mentioned here is only for the binary d...

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Abstract

The invention discloses a method for protecting a png picture in a handheld device in which an android operating system is adopted. The method includes the following steps: a png picture resource is compiled into a binary data file in a user-defined format; through an encrypting tool, the binary picture data file is encrypted, and encrypted data contain a specific encrypting identifier; through IO flow operation, the png binary data file after encryption in resource files is loaded by the handheld device, the encrypting identifier is identified through a user-defined deciphering program, and a corresponding decipherment algorithm is adopted for obtaining original picture data. Encryption is carried out on a png binary picture through a password tool, when the png picture is read, the encrypted png picture is restored for use through a password restoring algorithm, and the png picture is protected from being misappropriated easily.

Description

technical field [0001] The present invention relates to the protection of png pictures, more specifically, relates to a method for protecting png pictures in the application of android handheld devices. Background technique [0002] Nowadays, png pictures are widely used in mobile terminal software, so it is very important for a software with very good visual effects to protect its pictures, because if the picture protection is not done well, it will soon be on the market. Works of the same type with a similar interface will appear. However, the current hand-held software development png pictures are directly exposed in the software installation package, anyone can easily obtain the picture resources of the software as long as the installation package is decompressed, and the storage of resources is very insecure. In this case, the png image can be directly decompressed from the android software installation package to obtain the source file, which will cause the image of t...

Claims

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Application Information

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IPC IPC(8): G06F21/60
Inventor 杨博刘元进黄万盛倪伟俊
Owner GCI SCI & TECH
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