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Title:
TRANSACTION ATTACK DEFENSE METHOD, DEVICE, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2021/000764
Kind Code:
A1
Abstract:
The present invention provides a transaction attack defense method, device, and storage medium, said method comprising: before storing a first transaction in a buffer pool, calculating a first transaction processing fee threshold of the first transaction according to a preconfigured first step processing fee and the current state information of the buffer pool; determining whether the first processing fee of the first transaction is not less than the first processing fee threshold; if so, then storing the first transaction in the buffer pool; otherwise, deleting the first transaction. In the present invention, the transaction processing fee threshold of a transaction to be stored in a buffer pool is calculated in steps; when the buffer pool is congested, the processing fee threshold is increased accordingly, an attacker cannot launch a DDoS attack upon having only paid a small processing fee; in the present invention, transactions entering the buffer pool are screened, reducing congestion in the buffer pool and improving blockchain security.

Inventors:
ZHIWEN WANG (CN)
SIJIN WU (CN)
DEHAI CHEN (CN)
Application Number:
PCT/CN2020/097848
Publication Date:
January 07, 2021
Filing Date:
June 24, 2020
Export Citation:
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Assignee:
HANGZHOU FUZAMEI TECH CO LTD (CN)
International Classes:
H04L29/06
Domestic Patent References:
WO2019092544A12019-05-16
Foreign References:
CN110445755A2019-11-12
CN109669789A2019-04-23
CN109688211A2019-04-26
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