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Static analysis method of java program based on control flow analysis and data flow analysis

A technology of data flow analysis and static analysis, applied in the field of detection and analysis, it can solve problems affecting the accuracy of analysis results, false negatives, false positives, etc., and achieve the effects of improving integrity and accuracy, fast execution, and strong scalability.

Active Publication Date: 2018-04-17
XIDIAN UNIV
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Problems solved by technology

However, this kind of static analysis has certain limitations. It only speculates on possible problems in the results of program operation during the analysis, and false positives or false positives may occur, which will affect the accuracy of the analysis results.

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  • Static analysis method of java program based on control flow analysis and data flow analysis
  • Static analysis method of java program based on control flow analysis and data flow analysis
  • Static analysis method of java program based on control flow analysis and data flow analysis

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Embodiment Construction

[0049] The present invention will be further described below in conjunction with the accompanying drawings.

[0050] refer to figure 1 , the implementation steps of the present invention are as follows:

[0051]Step 1, convert Java language into Jimple language.

[0052] Currently, there are many intermediate representation forms of the Java language, including: Baf, Shimple, Grimp, and Jimple. Among them, the Jimple language is the intermediate representation form closest to the Java bytecode. This example uses Soot, the only intermediate language conversion tool currently, to convert The Java source code is converted into the representation form of the Jimple language, and then based on the splitting of the data rules of the Jimple language, and according to the execution logic of the program, an abstract syntax tree is established to generate a control flow graph.

[0053] Step 2, the Java program analysis problem is abstracted into an inter-procedural distributed subset ...

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Abstract

The present invention discloses a Java program static analysis method based on control flow analysis and data flow analysis, so as to mainly solve the problem of a low analysis accuracy rate of the conventional static analysis method. The implementation steps of the method are as follows: 1. transforming a Java source program into an intermediate expression form of a Jimple language; 2. abstracting a Java program static analysis problem into an interprocedural distributive subset IFDS problem; 3. defining an interface class of a solver of the interprocedural distributive subset IFDS problem; 4. by means of a data flow functional function FlowFunctions<N,D,M> in a solver class interface, setting a data flow analysis rule; and 5. running the interprocedural distributive subset IFDS problem, and performing data flow analysis on the basis of a control flow graph, so as to obtain an analysis result. The method disclosed by the present invention improves integrity and accuracy of static analysis, and the method is high in analysis efficiency and strong in extensibility and can be used for performing analysis on programs in a relatively large system scale.

Description

technical field [0001] The invention relates to the field of computer security, and further relates to a detection and analysis method, which can be used for static detection of programs in the Java language environment and realizes the analysis of Java programs. Background technique [0002] Java language, as a representative language of software development, occupies a major share of the market with its unique advantages. The Java language is an object-oriented programming language developed by SUN Corporation of the United States. It has better versatility, efficiency, cross-platform and security than C and C++ languages. Developers using the Java language can greatly improve the efficiency of software development, but at the same time, with the gradual increase in the size and complexity of software program codes, the detection of program codes will become more and more difficult, which also makes people search The vulnerability process faces greater challenges. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/36
CPCG06F11/3688
Inventor 王旭杨超孙聪马建峰纪倩张邦元金方圆张鹏
Owner XIDIAN UNIV
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