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VANET location privacy protection trust management model based on block chain

A technology for trust management and privacy protection, which is used in secure communication devices, public keys for secure communication, user identity/authority verification, etc.

Pending Publication Date: 2021-05-07
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Finally, a trust management system is proposed to detect malicious behaviors and troubleshoot malicious vehicles, so as to solve the mutual trust problem among anonymous set members in k-anonymity algorithm

Method used

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  • VANET location privacy protection trust management model based on block chain
  • VANET location privacy protection trust management model based on block chain
  • VANET location privacy protection trust management model based on block chain

Examples

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Embodiment Construction

[0019] The technical content of the present invention will be further described below in conjunction with the accompanying drawings. The experimental data in this specific embodiment comes from the real public data set of the Department of Computer Science and Engineering, Faculty of Science and Technology, University of Hong Kong. attached figure 1 Shows the flow chart of the VANET location privacy protection trust management model based on blockchain mentioned in the present invention, with figure 2 A schematic diagram of the roles and functions of the relevant roles involved in the invention is given, specifically including the following steps:

[0020] Step 1: Privacy Shield Certification

[0021] When vehicle A enters the location-based service (LBS) network, it needs to register the initial certificate from the registration authority (RA). Vehicle A first generates a pair of public and private keys, and provides personal real information and public key PU to RA. CA . ...

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Abstract

The invention discloses a VANET location privacy protection trust management model based on a block chain, and mainly solves a series of privacy leakage problems possibly encountered when a mobile vehicle requests a location-based service (LBS) from a location service provider (LSP). The method mainly comprises the following three aspects: (1) recording the request information of a moving vehicle by using a block chain to resist external attacks, and proposing a Conflux-based double-chain consensus mechanism, so that the information processing speed is greatly accelerated on the premise of ensuring that the safety performance is not reduced; (2) proposing an improved distributed k anonymous algorithm to prevent the LSP from illegally acquiring personal privacy information of the vehicle from the query request; and (3) designing a trust management model dominated by a roadside unit (RSU) to solve the mutual trust problem of internal members of the anonymous set. The design mode may also reduce the computational burden of the vehicle and reduce the risk of privacy leakage during communication. The model provided by the invention solves various privacy security problems in the LBS process, and can be applied to a large-scale data set.

Description

technical field [0001] The invention belongs to the field of intelligent transportation security, and in particular relates to a blockchain-based VANET position privacy protection trust management model, which is used to solve the problem of privacy leakage when vehicles use position-based services. Background technique [0002] The 21st century is an information society, and data itself is a huge wealth. Vehicle users hope to enjoy location-based services (LBS) without revealing personal privacy, so privacy security is an important content of LBS. Vehicles may face multiple privacy leaks in the process of requesting LBS. The main ways of personal information leakage are as follows: [0003] (1) Transmission security and storage security [0004] External attackers may intercept the messages transmitted between the vehicle and the location service provider (LSP) or invade the database storing user data, and further extract the user's personal privacy information from the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/30H04L9/32
CPCH04L9/30H04L9/3247H04L9/3263
Inventor 李博涵梁若宸
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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