Method for predistributing and establishing key of sensor network
A sensor network and establishment method technology, applied in key distribution, can solve the problems of sensor nodes being vulnerable to capture attacks, not supporting new nodes to join, and node A cannot be determined, so as to enhance the ability to resist capture attacks, resist node replication attacks, Realize the effect of node cancellation
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[0050] Based on the classical random graph theory, the present invention combines two sensor network key management methods of sharing a key for each pair of nodes and random key pre-distribution, and adopts the method of binding the key with the node identifier to propose a method that can Key predistribution and key establishment methods for large-scale sensor networks. According to a preferred embodiment of the present invention, the method comprises the following steps:
[0051] 1) Key pre-distribution
[0052] Before network deployment, the deployment server pre-distributes the communication keys used to establish secure connections between nodes to all nodes. The specific implementation method is:
[0053] 1.1) Before network deployment, the deployment server generates a key pool KP, which includes several keys and key identifiers. The number of keys in the key pool is recorded as |KP|, |KP| is large enough, and it is assumed that the deployment server is safe;
[005...
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