Intelligent contract vulnerability repairing method and device and medium

• Main Authors: FENG YUMING, QIU ZHIHAO, LIU PENGHUI, ZHANG WEIZHE, ZHANG YU
• Format: Patent
• Language: Chinese; English
• Published: 08.11.2022
• Subjects: CALCULATING; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR

The invention discloses an intelligent contract vulnerability repairing method and device and a medium, and relates to the field of intelligent contracts. The method comprises the steps of obtaining operation data when an Ethereum virtual machine operates a smart contract, wherein the operation data comprises block information, transaction information and instruction information; detecting vulnerabilities of the smart contract according to the operation data, and determining an instruction execution sequence corresponding to the vulnerabilities; according to the operation data, determining a target basic block where the instruction execution sequence is located from a control flow diagram of the smart contract, and obtaining context logic association information of the vulnerability; generating a target patch according to the type of the vulnerability, the byte code level associated information and a preset patch template; and repairing the original program code of the smart contract according to the target p