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Technology of Blockchain
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App. Res. of Comp. Printed Article
Vol. 38, 2021 No. 7
1943-1946

Research on improved symbolic execution for smart contract vulnerability detection

Li Zonghonga,b
Hu Dashaa,b
Jiang Yuminga,b
a. College of Computer Science, b. Big Data Analysis & Fusion Application Technology Engineering Laboratory of Sichuan Province, Sichuan University, Chengdu 610065, China
DOI: 10.19734/j.issn.1001-3695.2020.10.0353

Abstract

Due to the immutable nature of the blockchain, smart contracts that have been deployed on the blockchain cannot be changed. In order to improve the security of the contract and prevent the smart contract from integer overflow, short address attacks, pseudo-random, etc., it is necessary that perform vulnerability detection on the contract before the contract have been deployed. This paper analyzed and researched the symbolic execution of the integer overflow vulnerability of the smart contract, and the investigation found that the detection speed of existing symbolic execution methods was slow. Then this paper proposed an improved symbolic execution method for solving constraints from the bottom, which combined depth first and breadth first path selection to improve code coverage of symbolic execution. The experimental results show that the improved symbolic execution has a detection accuracy rate of 84% in the selected 100 smart contracts containing overflow vulnerabilities, and the average detection efficiency has increased by 20%. The detection efficiency in medium-scale smart contracts has increased significantly, and the detection results have a higher accuracy high.

Foundation Support

国家重点研发计划资助项目(2020YFB1707900)
四川省科技计划资助项目(2019YFG0400)

Publish Information

DOI: 10.19734/j.issn.1001-3695.2020.10.0353
Publish at: Application Research of Computers Printed Article, Vol. 38, 2021 No. 7
Section: Technology of Blockchain
Pages: 1943-1946
Serial Number: 1001-3695(2021)07-004-1943-04

Publish History

[2021-07-05] Printed Article

Cite This Article

李宗鸿, 胡大裟, 蒋玉明. 面向智能合约漏洞检测的改进符号执行研究 [J]. 计算机应用研究, 2021, 38 (7): 1943-1946. (Li Zonghong, Hu Dasha, Jiang Yuming. Research on improved symbolic execution for smart contract vulnerability detection [J]. Application Research of Computers, 2021, 38 (7): 1943-1946. )

About the Journal

  • Application Research of Computers Monthly Journal
  • Journal ID ISSN 1001-3695
    CN  51-1196/TP

Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

Aiming at the urgently needed cutting-edge technology in this discipline, Application Research of Computers reflects the mainstream technology, hot technology and the latest development trend of computer application research at home and abroad in a timely manner. The main contents of the journal include high-level academic papers in this discipline, the latest scientific research results and major application results. The contents of the columns involve new theories of computer discipline, basic computer theory, algorithm theory research, algorithm design and analysis, blockchain technology, system software and software engineering technology, pattern recognition and artificial intelligence, architecture, advanced computing, parallel processing, database technology, computer network and communication technology, information security technology, computer image graphics and its latest hot application technology.

Application Research of Computers has many high-level readers and authors, and its readers are mainly senior and middle-level researchers and engineers engaged in the field of computer science, as well as teachers and students majoring in computer science and related majors in colleges and universities. Over the years, the total citation frequency and Web download rate of Application Research of Computers have been ranked among the top of similar academic journals in this discipline, and the academic papers published are highly popular among the readers for their novelty, academics, foresight, orientation and practicality.

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