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A location anonymity method against replay attack in road network environment

An anti-replay and road network technology, applied in location information-based services, security devices, wireless communications, etc., can solve the problems of user privacy leakage, failure to consider the diversity of road sections, etc., to protect location privacy and improve location service efficiency , The effect of fast service response

Active Publication Date: 2020-09-22
HOHAI UNIV
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  • Claims
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Problems solved by technology

Mouratidis et al. proposed a bucket division strategy, which can also resist replay attacks, but does not consider the l-diversity of road segments, which will still cause user privacy leakage

Method used

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  • A location anonymity method against replay attack in road network environment
  • A location anonymity method against replay attack in road network environment
  • A location anonymity method against replay attack in road network environment

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0027] The road network can be abstracted into a weighted undirected graph model, which can be represented by a triplet G(V, E, W), where V represents the set of nodes in the undirected graph, and E represents the set of edges in the undirected graph , e ij ∈E represents the road node v in the road network i ∈V and road node v j The connection between ∈V can be directly reached; w ij ∈W represents edge e ij The number of mobile users that exist on .

[0028] A road segment refers to a sequence S=(v 0 v 1 ,v 1 v 2 ,...,v L-1 v L ), v i ∈V,i=0,1,...,L represents L+1 different points in the vertex set V, the starting point of the sequence v 0 and terminal v L degree is not 2. Obvious...

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Abstract

The invention discloses a location anonymous method for resisting a replay attack in a road network environment. The location anonymous method for resisting the replay attack in the road network environment comprises the steps that: (1), road sections are pre-processed; the road sections are pre-sorted for one time by adoption of breadth-first sorting; and the location query cost is reduced; and (2), an anonymous set is constructed; an equivalent partition is obtained from the sorted road sections; an anonymous and equivalent road section concealment set is obtained; various road sections in the concealment set are equalized by adoption of a pseudo-user adding mechanism, so that the edge weight association degree satisfies a pre-set threshold value; and thus, a privacy threat due to an edge weight inference attack also can be prevented while the replay attack is resisted. By means of the location anonymous method for resisting the replay attack in the road network environment disclosedby the invention, the common replay attack and edge weight inference attack in the road network environment can be resisted while the concealment set can be effectively generated; and furthermore, the method is low in query cost and quick in service response.

Description

technical field [0001] The invention relates to a location anonymity method for resisting replay attacks in a road network environment, and belongs to the technical field of location privacy protection. Background technique [0002] With the rapid development of wireless technology and the popularization of terminal devices such as smart phones, the application of location-based service (LBS) is becoming more and more extensive. However, location information usually involves user privacy, and once it is mastered by attackers, it may cause various losses to users and service providers. The query service privacy protection strategy proposed for ordinary Euclidean space is not suitable for the road network environment, and it is especially difficult to resist replay attacks that are easily launched in the road network environment. Chow et al. proposed a method of randomly selecting road sections to construct an anonymous set. Although it can effectively resist replay attacks, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/02H04W12/02
CPCH04W4/02H04W12/02
Inventor 吕鑫施海涛周思琪马佳仕
Owner HOHAI UNIV
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