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Method for evaluating trust degree of Internet of things node

A technology of trust and Internet of Things, applied in the field of network information security, can solve problems such as the lack of effective methods

Active Publication Date: 2019-01-15
CIVIL AVIATION UNIV OF CHINA
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  • Method for evaluating trust degree of Internet of things node
  • Method for evaluating trust degree of Internet of things node
  • Method for evaluating trust degree of Internet of things node

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Embodiment Construction

[0069] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the following embodiments in no way limit the present invention.

[0070] Such as figure 1 As shown, the Internet of Things node trust evaluation method provided by the present invention includes the following steps carried out in order:

[0071] 1) S1 stage of querying the list of direct interaction nodes: In this stage, the service request node in the Internet of Things first inquires whether there is a record of the service provider node in the list of direct interaction nodes, and if there is a record of the service provider node, then enters S2 stage; otherwise enter the S3 stage;

[0072] 2) The S2 stage of calculating the direct trust degree value: in this stage, first, according to the data packet forwarding rate and repetition rate of the service provider node, calculate the service quality value of the service provider node and the...

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Abstract

A method for evaluating the trust degree of an Internet of things node is provided. The method includes the steps of querying a list of direct interaction nodes; calculating a direct trust value; calculating a recommended trust value; Calculating the comprehensive trust value: updating the list of trust values according to the comprehensive trust value. The invention provides a method for evaluating the trust degree of a node in the Internet of Things, which adopts an improved Beta-based direct trust degree evaluation method when evaluating the direct trust degree of the node, and optimizes arecommended trust degree weight calculation method by fusing user similarity, evaluating difference degree and the trust degree value of the node itself, and calculating the recommended trust degree value of the node. Finally, the combined method based on the direct trust value and the recommended trust value is adopted to calculate the node comprehensive trust value, which can improve the accuracy of the trust evaluation. The experimental results show that the method of the invention has higher sensitivity to malicious behaviors of nodes compared with other methods, and can effectively reducetransmission energy consumption while ensuring the calculation accuracy of the trust degree.

Description

technical field [0001] The invention belongs to the technical field of network information security, in particular to a method for evaluating the trust degree of nodes in the Internet of Things. Background technique [0002] The Internet of Things (IOT) is an information sensing device that connects any item with the Internet in accordance with the agreed protocol for information exchange and communication, so as to realize intelligent identification, positioning, tracking, monitoring and management. It is a network that extends and expands on the basis of the Internet. The Internet of Things can obtain objective physical information and has a very broad application prospect. It can be used in urban management, biomedicine, environmental detection, smart home and other fields. Therefore, it has attracted great attention from academia and industry. [0003] In IOT, all kinds of data are collected in real time through a series of terminal devices between nodes, including priv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L29/06H04L29/08
CPCH04L63/20H04L67/12H04L43/55
Inventor 谢丽霞魏瑞炘杨宏宇
Owner CIVIL AVIATION UNIV OF CHINA
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