A smart contract intrusion detection method, device, terminal device and storage medium

Abstract

The invention discloses a smart contract intrusion detection method, device, terminal equipment and storage medium. The method includes: collecting transaction data during the current block chain transaction; wherein, the transaction data includes transaction source address information and characteristic instructions Sequence call information; the characteristic instruction sequence call information is collected by the probe program set in the smart contract to be protected when the smart contract to be protected is running, and the behavior information of the call instruction sequence; the transaction data and the preset The attack feature data is matched; wherein, the attack feature data is stored in the preset smart contract attack database, and the attack feature data includes malicious addresses and attack behavior information; according to the transaction data and the preset attack feature data According to the matching result of the data, it is judged whether there is an intrusion behavior, and if there is, an intrusion detection warning is generated. The security of smart contracts can be improved by implementing the embodiments of the present invention.

Description

technical field [0001] The present invention relates to the technical field of block chains, in particular to a smart contract intrusion detection method, device, terminal equipment and storage medium. Background technique [0002] Blockchain is a distributed ledger technology that uses cryptography to ensure that the data recorded in it is open, transparent, safe and credible. The core feature of blockchain is decentralization and consensus mechanism. It establishes a trust network in a complex network environment through certain algorithms to ensure the security of information exchange between points. From another perspective, blockchain technology is a decentralized and trustless collective maintenance database technology, and its essence is an Internet protocol. As a powerful technology, blockchain provides strong data integrity guarantees in trustless networks. [0003] A smart contract is a code deployed on the blockchain. According to the content of the contract, it...

AI Technical Summary

Problems solved by technology

Since the smart contract is automatically executed and cannot be modified once released, it is necessary to audit the smart contract to find vulnerabilities before the smart contract is released. In the existing technology, the source code of the smart contract is detected by the existing smart contract vulnerability detection tool , can detect potential vulnerabilities in smart contracts, but most of the existing detection tools are designed to deal with specific known vulnerabilities, and due to the unpredictability of smart contract attack behavior, only by analyzing the source code, and The loopholes in the actual operation of the smart contract cannot be found, resulting in lower security of the smart contract

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