Identity-based wireless sensor network security trust method

Abstract

The invention discloses an identity-based wireless sensor network security trust method. In the method, firstly each node in the network is loaded with a trust management structure; wherein the trust management structure is composed of a secret key management module, a receiving credit module, a storage credit module, a credit calculating module, an application selecting module, a route management module, a decision making module, a credit management module and a monitoring module. On the basis of the trust management structure, a trust communication network is established by broadcasting query node information among nodes, receiving query respond and updating node credit and by identity-based public key password encryption and authentication among nodes, so as to realize safe communication of credit information among nodes. The invention reduces complexity of credit calculation in the wireless sensor network, improves security of communication of the wireless sensor network trust system, solves communication problem of a source node and a destination node under multi-hop condition, and can meet the requirement of large-scale self-organized network application.

Description

technical field [0001] The invention relates to the field of wireless sensor network security communication, and trust security management in the wireless sensor network. Specifically, it is a security method for establishing a network trust system based on a public key cryptography system based on network node identities, and realizes secure communication on a trust network. Background technique [0002] In the wireless sensor network, to solve the security problems caused by the limited energy of the nodes, prone to failure and easy to be physically captured by the attacker, relying solely on cryptography is not enough to solve the problem, among many methods to solve communication security , by increasing the trust mechanism of nodes and building a trust network to solve the security of wireless sensor networks has attracted the attention of researchers in the industry. [0003] The document "A Security Framework with Trust Management for Sensor Networks, Security and Pr...

AI Technical Summary

Problems solved by technology

However, this security framework also has some defects: First, the transmission of trust information in nodes does not consider the security and authentication of messages, which leads to the fact that attackers can pretend to be some high-trust nodes to mislead other nodes, or tamper with trust information. As a result, even if there is a trust management mechanism, the problem of network security cannot be completely solved.

Secondly, the initialization process of trust is not carried out, which leads to poor operability of the network and is not suitable for actual network applications

Finally, the security framework itself has flaws and deficiencies in its functions. It does not consider the influence of the characteristics of the sensor nodes on trust and the problem of re-updating according to the communication situation, which makes the designed framework structure not perfect.

In addition, there is no multi-hop operation and solution, which is difficult to meet the needs of large-scale self-organizing network applications

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