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Bilinear cipher key pair pre-distributing method oriented to safety of mobile self-organizing network

A mobile self-organizing and self-organizing network technology, applied in the public key and key distribution of secure communication, which can solve the problems of poor connectivity, large key scale, and poor anti-capture ability of nodes.

Inactive Publication Date: 2011-05-25
ZHEJIANG UNIV OF TECH
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  • Description
  • Claims
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Problems solved by technology

[0008] In order to overcome the shortcomings of the existing key pre-distribution method, such as large key size, low efficiency, poor node anti-capture ability, and poor connectivity, the present invention provides a small key size, fast speed, high efficiency, node anti-capture Bilinear pairwise key predistribution method with strong performance and good key connectivity for mobile ad hoc network security

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  • Bilinear cipher key pair pre-distributing method oriented to safety of mobile self-organizing network
  • Bilinear cipher key pair pre-distributing method oriented to safety of mobile self-organizing network
  • Bilinear cipher key pair pre-distributing method oriented to safety of mobile self-organizing network

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Embodiment Construction

[0040] The present invention will be further described below in conjunction with the accompanying drawings.

[0041] refer to figure 1 , a bilinear pairwise key pre-distribution method for mobile ad hoc network security. First, set the number of ad hoc network nodes as n. In the key pre-distribution stage, the base station generates an n× n's secrecy matrix N ij , where the matrix elements 1≤i, j≤n, and assign the i-th column element information to the i-th node to save private, 1≤i≤n; the base station maps G for each node i 1 point P on the domain i , which is equivalent to the public key of the node under the identity cryptographic system, and all other nodes in the network can obtain this public key;

[0042] After the key pre-distribution is completed, the process of negotiating the pairing key between node i and node j is as follows:

[0043] (1), node i according to the private information N ji and the public key P of node j j and its own public key P i , calcul...

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Abstract

The invention discloses a bilinear key pre-distribution method which faces the safety of the mobile ad hoc network. The method comprises the following steps: firstly, supposing the number of the nodes in the ad hoc network as n, during the key pre-distribution course, generating a n*n secure matrix N in a Galois field GF(q) by a base station, wherein, the matrix element Nij is a subset of ZP<*>, i is equal to or more than 1 and j is equal to or less than n; distributing the information of the element in Row i to the No. i node for storage and personal holding, wherein, i is equal to or more than 1 and is equal to or less than n; providing a public key that is equal to the node under identification cipher system for each point Pi in the mapping area G1of each node i by the basestation, and obtaining the public key by the other nodes in the network; after the fishing of the key pre-distribution, realizing an agreement and pair-wise key of the node i and node j. The invention provides a bilinear key pre-distribution method which faces the safety of the mobile ad hoc network, which has small key scale, high safety strength, fast speed, high efficiency, strong anti-acquisition performance of nodes and good connectivity of the key.

Description

technical field [0001] The invention relates to a key pre-distribution method for mobile ad hoc network security. Background technique [0002] In the mobile Ad Hoc network, there is no single trusted node, and the PKI system cannot be used to effectively realize the network security platform like the traditional network. The industry has proposed a variety of security models based on the threshold cryptography system, which distributes security authentication services to multiple nodes in the network to achieve trust dispersion, and these nodes jointly undertake the authentication function of CA, thereby enhancing the security of the system. The threshold-based security system selects n nodes in the network as service nodes, holding different components of the system private key. The system private key is shared by n service nodes according to the (n, k) threshold cryptosystem. The combination of K service nodes can realize services such as issuing and updating user certi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/08H04L9/30H04L9/32H04L29/06
Inventor 王卫红陈铁明
Owner ZHEJIANG UNIV OF TECH
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