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Method, system and device for resisting distributed denial of service attack and storage medium

A distributed rejection and formal technology, applied in the field of blockchain, can solve problems such as weak anti-DDoS ability

Pending Publication Date: 2022-05-17
香港城市大学深圳研究院
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Problems solved by technology

[0003] This article is used to solve the problem of weak anti-DDoS ability and internal attack risk in the alliance blockchain system in the existing technology

Method used

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  • Method, system and device for resisting distributed denial of service attack and storage medium
  • Method, system and device for resisting distributed denial of service attack and storage medium
  • Method, system and device for resisting distributed denial of service attack and storage medium

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other Embodiment approach

[0088] In other embodiments, the number of endorsement nodes can also be determined according to the number of specified endorsement nodes in historical transactions that differ from the current transaction by a predetermined distance.

[0089] When the above step 220 is implemented, the pseudo-random number can be generated by using the direct method, the reverse method, or the rejection method, and the algorithm for generating the pseudo-random number is not specifically limited herein. The values ​​of the generated pseudo-random data groups correspond to the nodes in the redundant endorsement nodes respectively.

[0090] In order to effectively defend against attacks from internal DDoS attackers in the blockchain during the endorsement and consensus phases, in an embodiment of this paper, as image 3 As shown, the anti-distributed denial-of-service attack methods include:

[0091] Step 310, randomly select a formal endorsement node from redundant endorsement nodes, the red...

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Abstract

The invention provides a distributed denial of service attack resisting method, system and device and a storage medium, and the method comprises the steps: randomly selecting a form endorsement node from redundant endorsement nodes, the redundant endorsement nodes being endorsement nodes except a designated endorsement node of a current transaction in a block chain; and sending a transaction endorsement request to the specified endorsement node and the formal endorsement node. According to the method, formalized endorsement is carried out by setting the formalized endorsement node, and the transaction endorsement request is randomly sent to the formalized endorsement node in the transaction process of the block chain node, so that false transaction type judgment information can be transmitted to the DDoS internal attacker, and the purpose of interfering the transaction type judgment of the DDoS internal attacker is achieved; and therefore, the attack measurement of an attacker in the DDoS is difficult to carry out effectively.

Description

technical field [0001] This article relates to the field of blockchain, in particular to an anti-distributed denial-of-service attack method, system, device and storage medium. Background technique [0002] Access to the consortium blockchain system requires identity authentication, which has good resistance to attackers outside the system, but the defense against distributed denial of service (Distributed Denial of Service, DDoS) attacks inside the consortium blockchain system less capable. The reasons for the weak resistance of the alliance blockchain system to distributed denial-of-service attacks are as follows: First, the blockchain itself has the characteristics of data sharing and smart contract function sharing, and the internal attackers of the alliance DDoS can obtain blocks at low cost chain data and smart contract function call authority; secondly, the concealment of internal attacks, internal attacks can often disguise DDoS spam transactions as normal transacti...

Claims

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Application Information

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IPC IPC(8): H04L9/40H04L67/12G06Q20/38
CPCH04L63/1458H04L67/12G06Q20/382
Inventor 赵建良石睿冷杰武朱薪宇卞一洋
Owner 香港城市大学深圳研究院
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