【Author】
Xing, Cipai; Chen, Zhuorong; Chen, Lexin; Guo, Xiaojie; Zheng, Zibin; Li, Jin
【Source】WIRELESS NETWORKS
【Abstract】The smart contracts deployed in Ethereum carry huge amounts of virtual coins. However, there are vulnerabilities in some of these smart contracts, which makes them vulnerable to malicious attacks. Due to the characteristics of blockchain, such vulnerable contracts are difficult to be revoked. In order to prevent vulnerable contracts, it is very important to detect the loopholes in these contracts before their deployment. In this paper, we focus on three vulnerabilities of smart contract:has_short_address,has_flowsandis_greedy. For the three kinds of vulnerabilities, we propose slicing matrix, a new method to extract vulnerability feature, and construct three vulnerability detection models for comparison. The experimental results show that the detection accuracy based on neural network and slice matrix is better than that based on neural network and opcode features. In other words, slice matrix can improve the accuracy of vulnerable contract detection. Among our three detection models, the model based on random forest and opcode features performs best.
【Keywords】Smart contract; Slice matrix; Vulnerability; Multi-label classification; Ethereum
【文献类型】Article; Early Access
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