Security protection system for wireless sensor network

Abstract

The invention discloses a security protection system for a wireless sensor network. An encryption module, an identity verification module and an early warning module are arranged in each sensor node;the encryption module is used for encrypting exchange data among the sensor nodes; when data is exchanged every time, a secret key is updated for one time; the identity verification module is used foridentity verification among the sensor nodes, and is capable of performing data transmission after identity verification; and the early warning module is used for starting an alarm program after identity verification is wrong, so that a worker is reminded to perform network security maintenance in time. By means of the security protection system for the wireless sensor network disclosed by the invention, real-time monitoring of the sensor network is realized; due to design of the encryption module and the identity verification module, the security performance of the network can be well improved; and the network state stability maintenance is facilitated.

Description

technical field [0001] The invention relates to the field of wireless sensor networks, in particular to a safety protection system for wireless sensor networks. Background technique [0002] WSN is a large-scale distributed network, which is often deployed in unmaintained and harsh environments. In most cases, the sensor nodes are used for one time, which determines that the sensor nodes are cheap and extremely resource-intensive. Restricted wireless communication equipment, its characteristics are mainly reflected in the following aspects: (1) limited energy: energy is the most important constraint condition to limit the capability and life of sensor nodes, and the existing sensor nodes are all through Standard AAA or AA batteries are used for power and are not rechargeable. (2) Computational capability is limited: sensor node CPU generally only has processing capability of 8bit, 4MHz~8MHz. (3) Limited storage capacity: sensor nodes generally include three types of memory...

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Problems solved by technology

(2) The computing power is limited: the sensor node CPU generally only has the processing power of 8bit, 4MHz~8MHz

(3) Limited storage capacity: sensor nodes generally include three types of memory, namely RAM, program memory, and working memory.

(4) The communication range is limited: In order to save energy consumption during signal transmission, the transmission energy of the RF module of the sensor node is generally between 10mW and 100mW, and the transmission range is also limited to within 100 meters to 1 kilometer

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