A Adjustable Dynamic Defense Mechanism Against DDOS Attacks in Bitcoin Memory Pools

Abstract

The present invention discloses an adjustable dynamic defense mechanism against DDoS attacks on Bitcoin memory pools, the mechanism includes basic parameters set by users to start the mechanism; when the size of the current memory pool exceeds the basic parameters set in step S1, The mechanism starts; receiving a new transaction request; judging whether the handling fee of the new transaction meets the relay fee; judging whether the average confirmation time of the new transaction conforms to the basic parameters; accepting or rejecting the new transaction after judging into the memory pool. The invention can not only achieve excellent attack resistance effect, but also greatly reduce the impact on legal transactions. Moreover, the defense mechanism of the present invention can adjust multiple parameters, including the size of the memory pool at startup, the maximum size of the memory pool, and the number of hierarchical layers of the memory pool, thus giving user nodes more adjustment flexibility, allowing each node While defending against attacks, it can also use the processing power of its own equipment more efficiently.

Description

technical field [0001] The present invention relates to the technical field of computer internet network, in particular to an adjustable dynamic defense mechanism against DDoS attack of Bitcoin memory pool. Background technique [0002] Bitcoin's incentive mechanism prompts miners to mine and spread new blocks constructed by themselves to obtain income. Due to the low transaction throughput of Bitcoin, about 3-7 transactions are confirmed per second, the Bitcoin memory pool, that is, the non-permanent local memory used to store unconfirmed transactions, will suffer from a large number of dust transaction attacks. Cause its size to continue to grow, face memory pressure, and eventually affect the service. [0003] The process of this type of DDoS attack against the Bitcoin memory pool is as follows: first, in the first "distribution phase", the attacker observes and estimates the relay fee of the network, that is, the minimum transaction fee that needs to be included in the ...

AI Technical Summary

Problems solved by technology

[0012] In view of the defects in the prior art, the present invention aims to provide an adjustable dynamic defense mechanism against Bitcoin memory pool DDoS attacks. First, the size of the Bitcoin memory pool is kept within an appropriate range, because it is necessary to continuously increase the size of the memory pool. The purpose of the attacker, therefore to resist DDoS attacks at first will limit the size of the memory pool, thereby avoiding the follow-up negative impact caused by DDoS attacks and making the service unable to use normally, secondly on the basis of successfully resisting attacks, the present invention also aims to reduce as much as possible The impact on legitimate users and transactions to overcome the shortcomings of existing technologies and allow our defense mechanisms to be adjusted by user nodes according to their own equipment capabilities

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