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Method and device for preventing attacks

A technology of adjacent nodes and products, which is applied in the field of communication to improve user experience and ensure security.

Active Publication Date: 2022-08-02
CHINA UNITED NETWORK COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To this end, the present invention provides a method and device for preventing attacks to solve the problem that attackers maliciously tamper with the routing information of blockchain network nodes through fake nodes, thereby controlling the external communication of blockchain network nodes

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  • Method and device for preventing attacks
  • Method and device for preventing attacks
  • Method and device for preventing attacks

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Embodiment Construction

[0055] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention.

[0056] In the method and device for preventing attacks provided by the embodiments of the present invention, it is considered that an attacker can use fake nodes to affect the routing selection of real nodes in the blockchain network, and when the number of fake nodes in the blockchain network is large enough, a large number of fake nodes can By "isolating" the real nodes from the blockchain network, so as to control the external contacts of real nodes, attackers can further implement routing deception, storage pollution, denial of service, and ID hijacking and other attack behaviors, and arbitrarily attack the blockchain network. Therefore, a method and device for preve...

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Abstract

The invention discloses a method and device for preventing attacks, belonging to the technical field of communication. The attack prevention method includes: receiving a computing capability certification message and / or an identity guarantee message broadcast by an adjacent node in the blockchain network; receiving routing information recommended by the adjacent node; according to the joining duration of the adjacent node joining the blockchain network and computing capability certification messages and / or based on identity guarantee messages to determine whether adjacent nodes are credible; when adjacent nodes are credible, modifying the routing table of the current node according to routing information can prevent attackers from maliciously tampering with blocks through fake nodes The routing information of the blockchain network nodes avoids the external contact of the blockchain network nodes being controlled, ensures the security of the blockchain network users, and improves the user experience.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, to a method and device for preventing attacks. Background technique [0002] Any network node can join the blockchain network and become a node of the blockchain network on the basis of following the relevant protocols of the blockchain network. Attackers take advantage of this feature to add fake nodes to the blockchain network, and affect the routing of real nodes in the blockchain network through fake nodes, so as to control the external contacts of real nodes and publish fake resources in the blockchain network. . For example, in a blockchain network, a fake node periodically announces its online status to its adjacent real nodes, so that the adjacent real nodes are added to its routing table. The attacker continuously sends routing table update messages to the real node through the fake node, so that the routing table of the real node is full of fake nod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/40H04L45/00
CPCH04L63/145H04L63/08H04L63/20H04L45/54
Inventor 田新雪万刚严斌峰
Owner CHINA UNITED NETWORK COMM GRP CO LTD