Security small-data distribution method in wireless sensor network based on short and small public key cryptosystem

Abstract

The invention discloses a security small-data distribution method in a wireless sensor network based on a short and small public key cryptosystem. The security small-data distribution method comprises the following steps: in a system initialization stage, a base station constructs an elliptical curve cryptographic algorithm, generates a private key, a public key, a one-way key chain and public key ciphertext information, and loads the processed one-way key chain and public key ciphertext information in sensor nodes before the sensor network is deployed; before data items are distributed, the base station generates a data packet by adopting a message-confusing technology and a digital signature technology according to the data items needing to be distributed; after the various nodes receive the data packet, the validity of the data packet is judged; if the data packet is the valid data packet, the data packet is accepted and updated; and otherwise, the data packet is directly abandoned. By means of the security small-data distribution method disclosed by the invention, the sensor network has the following advantages: compromise of the sensor nodes can be resisted; the information integrity and reliability are ensured; time synchronization among the base station and the sensor nodes is unnecessary; the robustness is high in packet loss and data packet transmission out-of-sequence; the efficiency is high; energy can be saved; denial of service attacks can be effectively resisted, etc.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to a wireless sensor network security small data distribution method based on a short public key cryptosystem. Background technique [0002] At present, the distribution of wireless sensor networks is very wide, and the applications are also diverse, including environmental monitoring, battlefield surveillance and data acquisition in harsh geographical environments. In wireless sensor networks, being able to distribute small amounts of data across the network is a useful operational feature. It allows the base station to write some small programs, commands, queries and configuration parameters to the sensor nodes. It should be emphasized that the small data distribution protocol is different from the code distribution (sometimes also called data distribution or reprogramming) protocol that has been studied intensively. Code distribution is the distribution of new bi...

AI Technical Summary

Problems solved by technology

Although the signature verification fails, this still consumes the energy of the sensor nodes, which easily causes the sensor network to fall into a denial of service attack

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