A Distributed Tor Link Topology Discovery Method

A topology discovery, distributed technology, applied in the field of distributed Tor link topology discovery, can solve the problem that the topology discovery method or technology cannot be applied to the Tor network.

Active Publication Date: 2018-11-16
NO 30 INST OF CHINA ELECTRONIC TECH GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the Tor anonymous network has the characteristics of protecting privacy and hiding communication relationships, the usual topology discovery methods or technologies cannot be applied to the Tor network.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] Before the specific description of the method, the Tor link extension protocol is introduced first.

[0015] The Tor link extension protocol is the key protocol for Tor to establish a link. The purpose of the protocol is to continue to expand the link to obtain better anonymity.

[0016] For link extension, the client sends a Relay Communication Unit (CELL) with an Extend or Extend2 command to the last node in the link. The payload of the Extend relay cell usually includes 4 parts: the IP address of the next node, the port number of the next node, the onion skin and the identity fingerprint of the next node.

[0017] The link extension command structure includes IP, PORT, Onion Skin, and Identity Fingerprint.

[0018] Now suppose there are two Tor network users: Alice and Bob. Alice is ready to establish a connection with Bob. In order to expand the link, Alice will first establish a TLS link with Bob, and then perform an OR handshake operation based on the TLS link....

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Abstract

The invention provides a distributed Tor link topology discovery method. According to the method, a pseudo topology link request is transmitted, so that link relations of nodes can be detected, and problems in Tor anonymous network topology discovery can be solved, and Tor network topology can be rendered. The method has the advantages of high efficiency and strong pertinence.

Description

technical field [0001] The invention relates to the technical field of network topology, in particular to a distributed Tor link topology discovery method. Background technique [0002] The meaning of network topology discovery is to draw network layout drawings, which is convenient for network administrators to locate and manage network faults. The early network topology discovery was manually drawn by network administrators. With the increase of network scale and complexity, manually drawing network topology diagrams can no longer meet the needs of network development, and will increase the workload of network administrators. Therefore, , people began to study the automatic discovery algorithm of network topology. [0003] The research on network topology discovery abroad started relatively early, so it has done better in terms of functionality and innovation. The software usually integrates functions such as topology discovery, information collection, topology display, a...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H04L12/24
CPCH04L41/0677H04L41/12
Inventor陈周国赵越卓中流陈瑞东
OwnerNO 30 INST OF CHINA ELECTRONIC TECH GRP CORP