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Method for preventing application program in intelligent terminal android system from being decompiled

An application program and smart terminal technology, applied in the direction of program/content distribution protection, etc., can solve the problem that the class loader cannot be prevented from being decompiled, the Java bytecode file is unsafe, etc., to prevent decompilation and improve security. Effect

Inactive Publication Date: 2014-04-23
PHICOMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that although the encrypted Java bytecode file cannot be decompiled, the custom class loader itself cannot prevent decompilation
Therefore, encrypted Java bytecode files are still insecure

Method used

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  • Method for preventing application program in intelligent terminal android system from being decompiled
  • Method for preventing application program in intelligent terminal android system from being decompiled

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Embodiment Construction

[0037] based on the following figure 1 and figure 2 , specifically explain the preferred embodiment of the present invention.

[0038] The invention provides a method for preventing decompilation of application programs in an intelligent terminal android system, the method comprising the following steps:

[0039] Step 1, encrypt the android program;

[0040] Step 1.1. After the application program is developed in java, it is packaged into a *.jar file;

[0041] Step 1.2, after the packaging file passes through the jdk compilation tool, the corresponding *.class file is generated;

[0042] Step 1.3, on the android platform, call the encryption algorithm to encrypt the corresponding bytecode of the file;

[0043] In this embodiment, in order to reduce costs, the RSA encryption algorithm is adopted. The RSA encryption algorithm is very convenient in the software field at present, and it is also easy to deploy. It can adopt the C++ method or the java method. In this embodimen...

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PUM

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Abstract

The invention provides a method for preventing an application program in an intelligent terminal android system from being decompiled. An encryption algorithm is introduced into the android system, as a result, a software program is prevented from being decompiled, and the security of android programs can be improved greatly.

Description

technical field [0001] The invention relates to a method for preventing decompilation of application programs in an intelligent terminal android (Android) system. Background technique [0002] At present, android programs are in full swing and are very prosperous all over the world. The programs developed by andorid are developed in java language. Due to its open source, developers are exempted from paying high patent fees, which can better integrate the world's advanced chip manufacturers and software manufacturers to participate in it. . Since the upper layer of the android application program is written in the java language, in order to bypass Oracle's oracle (java) virtual machine authorization, Google has designed a dalvik virtual machine for the Android platform. Using the dalvik virtual machine, the Java code passes through dx( dx is a tool for compiling java classes files into bytecode dex files) After the tool is converted and compiled, it becomes a Dex file. The i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/14
CPCG06F21/14
Inventor 金果
Owner PHICOMM (SHANGHAI) CO LTD
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