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Key management method used for wireless sensor network

A wireless sensor and key management technology, applied in the field of key management using combined key technology, can solve problems such as the limited capacity of infinite sensor nodes, the inability of sensor nodes to exchange information, and the inability to solve a large number of key storage problems.

Inactive Publication Date: 2011-08-24
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0007] The present invention aims at the current situation that infinite sensor nodes cannot solve the storage problem of a large number of keys due to limited capacity in the current research work, and the current situation that a large number of sensor nodes cannot exchange information because they do not share keys with adjacent nodes, adopts the combination key technology, A key management method for wireless sensor networks is proposed

Method used

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  • Key management method used for wireless sensor network
  • Key management method used for wireless sensor network
  • Key management method used for wireless sensor network

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Embodiment

[0053] The wireless sensor network has the characteristics of rapid deployment, self-organization, strong concealment and high fault tolerance. It can be used for meteorology, weather forecasting, soil index measurement in agricultural production, military intelligence acquisition, etc. For environments that are not suitable for manual deployment , can be dropped by aircraft to achieve safe and efficient deployment.

[0054] In a key management method for a wireless sensor network in this embodiment, the size of the key factor matrix base is (4×4), and the matrix has 4 combination levels, so there are 4 mapping values. Let the mapping of layer i be H i (ID i ’), then H 1 (ID i ') = map 1 ;H 2 (ID i ') = map 2 ;H 3 (ID i ') = map 3 ;H i (ID i ') = map 4 , map i (i=1, 2, 3, 4) is the ID of each member i ' corresponds to the value mapped by each column of the matrix;

[0055] Before the plane drops the sensor node, the offline server sends th...

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Abstract

The invention relates to a key management method used for a wireless sensor network, in particular relates to a key management method adopting the combined key technology, and belongs to the field of wireless sensor network safety technology. The key management method comprises the three steps as follows: system building, key generation and key updating, wherein the step of key generation comprises three processes of system parameter building, key factor and mapping algorithm generation, and shared key building. Compared with the prior art, the key management method has certain degrees of improvements on safety, storage and energy conservation, solves the problem that the sensor mode storage space is limited, ensures that any adjacent nodes can share a key, makes up for a deficiency that the sensor network is not provided with an authentication center, and saves the storage space.

Description

technical field [0001] The invention relates to a key management method for a wireless sensor network, in particular to a key management method using combined key technology, and belongs to the technical field of wireless sensor network security. Background technique [0002] A secure and effective key management mechanism is one of the core technologies for building a secure wireless sensor network. There is no authentication center in wireless sensor networks, and the communication and storage capabilities of nodes are very limited, so most of the existing key distribution mechanisms cannot be directly applied to wireless sensor networks. Although many scholars have carried out a lot of research work on the key management mechanism of wireless sensor networks, there are still a lot of problems to be solved and optimized in this field, which are worthy of further research. [0003] At present, there have been a lot of research work on the key pre-distribution scheme of wir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/04H04W12/041H04W12/0433
CPCY02D30/70
Inventor 郑军崔振富张启坤郭先臣
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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