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A car networking group key management method for multi-service and privacy protection

A technology of privacy protection and management method, applied in the field of wireless communication, to achieve the effect of forward security and protection of identity privacy

Active Publication Date: 2019-05-07
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Purpose of the invention: The purpose of the present invention is to solve the defects existing in the prior art, and to provide a multi-service and privacy protection-oriented car networking group key management method. The key update problem when joining, leaving, and handing over the RSU area, so that the vehicle can safely maintain the required services

Method used

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  • A car networking group key management method for multi-service and privacy protection
  • A car networking group key management method for multi-service and privacy protection
  • A car networking group key management method for multi-service and privacy protection

Examples

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Embodiment 1

[0071] Embodiment 1, set forth the present invention in detail below by present embodiment, concrete process is:

[0072] Such as figure 1 As shown, when the vehicle V i Leaving area A and entering area B, in order to maintain the subscribed service, update the handover key to ensure forward and backward security. The handover key update process is as follows:

[0073] (1)RSU A Signal processing process:

[0074] (11)V i RSU detected A signal P A Weak and RSU B signal P B Very strong (P A B ), V i Generate a random number N 2 , and use RSU A public key PKR A Encrypted N 2 , EncPKR A (N 2 ). Then put your current pseudonym information PID i , public key PK i , ordered service set SG i , the current timestamp T i and EncPKR A (N 2 ) as message M, and with N 2 As a key to generate a message authentication code HMAC(N 2 ,M), and finally send Message5.

[0075] Message5: (M=PID i ||PK i ||SG i ||EncPKR A (N 2 )||T i , HMAC(N 2 ,M))

[0076] (12)RS...

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Abstract

The invention discloses a multi-service and privacy protection-oriented car networking group key management method, which includes the following steps in turn: (1) establishing a network model of a two-layer structure of the car networking; (2) based on the network model in step (1) , describing the scenario of multiple groups ordering multiple services in the Internet of Vehicles; (3) Use the pseudonym mechanism to protect the identity privacy of the vehicle, and when there is a service dispute, TA can reveal the real identity of the vehicle; (4) TEK update strategy uses the key Update slot KUS; (5) After the vehicle is handed over, in addition to the TEK update in the target area to ensure backward security, the original area also performs TEK update to ensure forward security. The invention can guarantee the identity privacy of the vehicle, the non-repudiation of the vehicle subscription service and the service continuity when the vehicle is handed over between regions.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a multi-service and privacy protection-oriented car networking group key management method. Background technique [0002] In recent years, research on VANETs (vehicle ad hoc network) and service applications based on VANETs has been on the rise. Service providers can provide diverse services for multiple vehicle groups at the same time, such as in-vehicle music and in-vehicle video. , vehicle interactive games, mobile TV services, etc. These services are all applications for group communication of VANETs. The service provider uses the Traffic Encryption Key (TEK, Traffic Encryption Key) to provide services to the vehicle group that purchases the service, and the roadside unit RSU broadcasts these encrypted services. Due to the mobility of the vehicle, the vehicle often leaves the RSU area where it is located, joins a new RSU area, or is handed over from one RSU area ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08H04L29/06
CPCH04L63/0421H04L63/068H04L67/12
Inventor 王良民吴海云殷赵霞仲红冯霞肖云汤进
Owner ANHUI UNIVERSITY
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