基于深度学习的区块链蜜罐陷阱合约检测

doi:10.11959/j.issn.1000-436x.2022011

Abstract

Abstract:

Aiming at the problems of low accuracy of current detection methods and poor generalization of model, a honeypot contract detection method based on KOLSTM deep learning model was proposed.Firstly, by analyzing the characteristics of honeypot contract, the concept of key opcode was proposed, and a keyword extraction method which could be used to select the key opcode in smart contract was designed.Secondly, by adding the key opcode weight mechanism to the traditional LSTM model, a KOLSTM model which could simultaneously capture the sequence features and key opcode features hidden in the honeypot contract was constructed.Finally, the experimental results show that the model had a high recognition accuracy.Compared with the existing methods, the F-score is improved by 2.39% and 19.54% respectively in the two classification and multi-classification detection scenes.

Key words: blockchain, Ethereum, smart contract, honeypot contract, deep learning

CLC Number:

TP309.2

Hongxia ZHANG, Qi WANG, Dengyue WANG, Ben WANG. Honeypot contract detection of blockchain based on deep learning[J]. Journal on Communications, 2022, 43(1): 194-202.

Figures/Tables 16

References 24

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操作码	权重值
'SWITCH'	0.774 8
'JUMP'	0.575 1
'CALL'	0.601 9
'DUP'	0.499 9
'CALLDATASIZE'	0.507 6
'DIV'	0.501 0
'SHA'	0.627 4
'ISZERO'	0.497 7
'LT'	0.544 2
'MSTORE'	0.500 4
'STOP'	0.586 0

参数	数值
学习率	0.001
Batch大小	32
训练轮数/轮	20
词向量维度	250
隐藏层维度	150
Dropoutrate	0.5

词向量类型	精确率	召回率	F值
基于合约操作码预训练词向量	96.91%	94.30%	95.59%
维基百科词向量	94.60%	92.37%	93.47%

模型	精确率	召回率	F值
RNN	79.65%	98.62%	88.25%
LSTM	94.60%	92.37%	93.47%
CNN	95.75%	90.69%	93.15%
LightGBM	97.09%	89.62%	93.20%
KOLSTM	96.91%	94.30%	95.59%

类别		KOLSTM			LightGBM
类别	精确率	召回率	F值	精确率	召回率	F值
US	88.17%	91.98%	90.03%	100%	90.55%	95.04%
BD	92.42%	89.17%	91.04%	100%	100%	100%
HSU	88.71%	82.09%	85.27%	100%	92.57%	96.14%
HT	91.91%	100%	95.79%	100%	91.07%	95.33%
ID	73.68%	80.77%	77.06%	100%	82.39%	90.34%
SESL	94.00%	100%	96.91%	0	88.89%	0
SMC	87.00%	98.86%	92.55%	97.73%	92.21%	94.89%
TDO	98.86%	100%	99.43%	0	0	0
平均值	89.34%	92.86%	91.01%	74.71%	79.71%	71.47%

Honeypot contract detection of blockchain based on deep learning

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