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A secure communication method between nodes in vehicular network

A vehicle network and secure communication technology, applied in the field of secure communication between nodes in the vehicle network, can solve problems such as forged identity authentication and network replay attacks

Inactive Publication Date: 2010-06-02
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] (1) The large scale of vehicle network communication can easily lead to security issues such as forged identity authentication, network replay attacks, etc. At this time, it is necessary to establish an authentication mechanism that can trust a third party

Method used

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  • A secure communication method between nodes in vehicular network
  • A secure communication method between nodes in vehicular network
  • A secure communication method between nodes in vehicular network

Examples

Experimental program
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Embodiment Construction

[0036] A preferred embodiment of the present invention is described as follows in conjunction with accompanying drawing: See figure 1 , figure 2 , image 3 with Figure 4 , the implementation steps of the secure communication method between nodes in the vehicle network are as follows:

[0037] 1. First, when the vehicle network is formed, combine the elliptic curve cryptosystem and (t, n) threshold secret sharing, distribute the function of CA to several nodes in the vehicle network, that is, distribute the trust to one CA to several nodes The mutual trust of nodes, these CAs constitute a (t,n) threshold elliptic curve digital signature system (TECC-DSS). The principle of the (t, n) threshold scheme is to decompose the secret s of the system into n partial secrets s1, s2, ..., sn, and distribute them to n members. Any effective members not less than t can be obtained from They jointly restore the system's secret s among the partial secrets they hold, but less than t effec...

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Abstract

The invention discloses a safe communication method between nodes in a vehicular network. The method provides a disperse trust and security system based on elliptic curves. Before communicating, communication nodes are two-way indentified by a (t, n) threshold authentication proposal to prevent hostile nodes from personating legal nodes and t-1 members in a network from counterfeiting certificates. Meanwhile, a key exchange based on password authentication is carried out to ensure that all conventioneers consult about a key by a safe approach, and therefore, a strong session key is generated to provide message discrimination, confidentiality and integrality for communication nodes in a vehicular network. The method of the invention adopts an elliptic curve encryption scheme and the (t, n)threshold authentication proposal, thereby being characterized by small calculated amount, low complexity, high safety, small key space, high speed, needing no authentic certificate authority and having great application value in vehicular networks.

Description

technical field [0001] The invention relates to a method for ensuring that nodes can realize safe communication when establishing a communication connection in a vehicle network (Vehicular Networks, VANET for short). Background technique [0002] The vehicle network is an open mobile ad hoc (Ad hoc) network composed of mutual communication between vehicles on the road and between vehicles and fixed roadside facilities. As a branch of the Ad hoc network, the characteristics of VANET itself are very similar to those of the Ad hoc network, mainly including: (1) equal status of nodes, self-organization of the decentralized network; (2) unpredictability of dynamic changes in the network topology; (3) "Single-hop" and "multi-hop" coexistence networking mode, the communication between nodes and the nodes within the coverage range can be completed with a single hop, and the communication with nodes outside the range needs to go through the "multi-hop" of the intermediate node Forwa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/32H04L9/08
CPCH04L9/085H04L9/3066H04L9/3263H04L9/3268H04L63/0823H04L63/0869H04L2209/84H04W4/46H04W12/041H04W12/0471H04W12/069H04W12/122H04W12/126
Inventor 王潮林强时向勇
Owner SHANGHAI UNIV
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