Anti-attack method, equipment and storage medium

Abstract

The invention provides an anti-attack method, equipment and a storage medium. The anti-attack method comprises the steps: analyzing a first transaction to be stored in a memory pool, so as to obtain asignature address of the first transaction; obtaining the balance of the corresponding account according to the signature address; judging whether the balance is not less than the service fee of thefirst transaction or not: if not, generating and reporting error information, and deleting the first transaction; and if so, storing the first transaction into the memory pool. The anti-attack methodanalyzes the address before the transaction is stored in the memory pool so as to obtain the account balance, and determines whether the balance is enough to pay the service fee, so as to filter the transaction with insufficient account balance, and guarantee the condition that the memory pool is jammed due to the fact that the account balance is not enough to pay the service fee.

Description

Technical field [0001] This application relates to the field of blockchain technology, in particular to an anti-attack method, equipment, and storage medium. Background technique [0002] In the current blockchain system, the blockchain node does not check whether the account that signed the transaction has enough balance to pay the handling fee before executing the transaction, but deducts the handling fee when the transaction is executed. If the deduction fails, the transaction fee will be deducted. The transaction execution failed. [0003] Based on the above mechanism, an attacker in the network can generate a large number of transactions whose account balance is insufficient to pay the handling fee through signatures of accounts with insufficient balances and send them to the blockchain network for attack. These transactions can smoothly enter the memory pool and be packaged into blocks, and the lack of handling fees is not detected until they are executed. When an attacker ...

AI Technical Summary

Problems solved by technology

When an attacker sends a large number of such transactions, it will cause congestion in the mempool

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