Two-tiered wireless sensor network range query method capable of verifying privacy protection

Abstract

The invention discloses a two-tiered wireless sensor network range query method capable of verifying privacy protection. The two-tiered wireless sensor network range query method capable of verifying privacy protection includes the data collection protocol step and the query execution and verification protocol step. The data collection protocol step includes the procedures that sensor data are periodically collected by sensor nodes and subjected to bucket partitioning, data buckets are encrypted, verification code information of redundant buckets is worked out, corresponding data messages are constructed and uploaded to storage nodes, and the data messages are collected and then stored through the storage nodes. The query execution and verification protocol step includes the procedures that query instructions containing minimum tag sets corresponding to target zones are constructed by a base station and sent to the storage nodes, the storage nodes execute query processing and return corresponding query feedback messages, the base station decrypts the feedback messages and works out final query results, and finally query result consistency is verified. The protocol steps of the method are simple, privacy security of sensitive data can be guaranteed, and the query results can be verified; the in-network communication cost of the sensor nodes is low, and prolonging of the life cycle of a whole network is facilitated.

Description

technical field [0001] The invention relates to the technical field of wireless sensor network security, in particular to a two-layer sensor network range query method capable of verifiable privacy protection. Background technique [0002] At present, wireless sensor networks (Wireless sensor networks) have received more and more attention, and have been widely used in fields such as medical health, ecological monitoring, intelligent transportation, and national defense and military affairs. Compared with traditional multi-hop (Multi-hop) networks, two-tiered wireless sensor networks (Two-tiered wireless sensor networks) introduce computing, storage and storage nodes with sufficient energy resources as the middle layer, responsible for receiving and storing The unit perceives the data sent by the nodes, and processes and responds to the query instructions issued by the base station. In addition to storage nodes, there are two types of device nodes in the two-layer sensor ne...

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Problems solved by technology

[0006] Patent "A privacy-protected two-layer sensor network range query system and method" (application date: 2013.12.27, publication number: CN103763702A), this patent realizes the same verifiable two-layer sensor network as the present invention Privacy protection range query, but in the data collection process, each sensing node needs to generate an order-preserving code set for all sensing data collected by the node and upload it, resulting in high communication costs for sensing nodes and affecting the life cycle of the entire network

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