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Layer cluster type wireless sensor network global key management method

A wireless sensor and global key technology, applied in the field of Internet of Things security and privacy protection, to achieve the effect of easy acquisition, good concealment, avoiding frequent encryption and decryption calculations and multi-level transmission

Active Publication Date: 2020-08-04
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a layer-cluster type wireless sensor network global key management method, which solves the problems of frequent encryption and decryption calculations and multi-level transmission in the broadcast communication of the whole network

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  • Layer cluster type wireless sensor network global key management method
  • Layer cluster type wireless sensor network global key management method
  • Layer cluster type wireless sensor network global key management method

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Embodiment

[0048] There are two factors that affect the security of the global key: one is the base station, because the global key is completely randomly generated by the base station and has nothing to do with the nodes in the cluster. However, it is completely impossible to capture the base station, so the key source It is absolutely safe; the second is the key information m(i), all cluster heads obtain the global key K through the key information m(i) G . From the generation process of the global key, it is known that the key information m(i) is the key to obtain the key, but it has nothing to do with the key itself, and the transmission of the key information m(i) is completed by the session key , so to obtain the key information m(i), the session key must be parsed. This equivalent security relationship is specifically that the security of the key information m(i) is equivalent to the security of the global key, and the key information The security of m(i) is equivalent to the sec...

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Abstract

The invention discloses a layer cluster type wireless sensor network global key management method, which comprises the following steps of: establishing a layer cluster type network topological structure, a session key existing between neighbor nodes, and a group key existing in intra-cluster broadcast communication; regarding a base station and all cluster head nodes as a group of nodes, enablingthe base station to receive random secret key information from each cluster head node and construct a Lagrange interpolation polynomial function based on the random secret key information, wherein each cluster head independently acquires a global secret key based on the random secret key information of the cluster head and broadcasts the global secret key to cluster members through group secret key encryption to obtain the global secret key; and enabling each cluster head to periodically generate new random key information and submit the new random key information to the base station to reconstruct a Lagrange interpolation polynomial function, thereby realizing periodic updating of the global key. According to the invention, the establishment and updating of the global key do not need thedirect participation of network nodes, the security is good, the calculation and time expenditure is small, the acquisition is convenient, the problems of frequent encryption and decryption calculation and multistage transmission in the whole network broadcast communication are solved, and the rapid and safe whole network broadcast communication is realized.

Description

technical field [0001] The invention belongs to the technical field of Internet of Things security and privacy protection, and in particular relates to a global key management method for a layer-cluster type wireless sensor network. Background technique [0002] The wireless sensor network model is simply divided into two types: plane type and layer cluster type. For networks with large network scale and node density, the layer cluster type is usually used. The layer cluster type is also the main network model for various research topics in wireless sensor networks. For the key management of layer-cluster wireless sensor networks, the research mainly focuses on the session key and group key. These two keys can basically complete the layer-cluster network without considering the efficiency of network management. Security management, but still need to consider some special situations, for example: the main communication method of wireless sensor network is broadcasting, if acc...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/38H04W12/04H04L9/08
CPCH04W4/38H04L9/0891H04L9/0833H04L9/0869H04W12/0433H04W12/041
Inventor 王小刚张芬赵俊候劲熊兴中杨中凡叶丹黄叶
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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