Identifying method conducted in sensor network and sensor network

Abstract

The invention provides an identifying method conducted in a sensor network and the sensor network. The sensor network comprises network root nodes, aggregation nodes and network leaf nodes. The identifying method conducted in the sensor network comprises the following steps: establishing at least two clusters, wherein a first cluster comprises the network root nodes and at least one aggregation node, the network root nodes are root nodes of the first cluster, and the at least one aggregation node is a leaf node of the first cluster, a second cluster comprises the network root nodes and at least one aggregation node, the network root nodes are root nodes of the second cluster, and the at least one aggregation node is a leaf node of the second cluster; establishing a hash tree in each cluster, and the root node of each cluster is provided with a first root node value; storing the first root node value in each root node of the clusters; the root nodes sending a data package; the leaf nodes of the clusters connecting with the database determining that a timestamp of the database is legal, calculating a second root node value according to auxiliary identifying information of the data package, when the second root node value and the first root node value are identical, identifying that the data package is legal.

Description

technical field [0001] The invention relates to information security technology, in particular to a method for authentication in a sensor network and the sensor network. Background technique [0002] There is a big difference between the sensor network and the traditional network. The security of the sensor network is due to the openness of its deployment environment, which makes it easy for intruders to eavesdrop, interfere, insert and tamper with data packets. Authentication technology is a basic security service in sensor networks. The purpose of authentication is to prove the identity of nodes and the source of messages. The existing authentication technology provides two aspects of security: one is entity authentication, the sensor network can confirm the identity of the communication node, and then realize security services such as access control and authorization service; the other is message source authentication, in order to protect the data in the sensor network L...

AI Technical Summary

Problems solved by technology

[0004] The inventor found the following problems in the prior art: when there are a large number of sensor nodes in the network, the constructed Merkle tree will be too large, the node storage space and communication consumption will be too much, and the resources of the sensor network are limited; secondly, the broadcast authentication technology It is a one-way authentication technology, that is, the sensor node authenticates the source of the message, which only guarantees the legitimacy of the message packet received by the sensor node, and the legitimacy of the message packet received by the sink node from the sensor node cannot be authenticated

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