A Secure Data Aggregation Scheme using Implicit Security Technology for Wireless Sensor Networks
Date Issued
2010
Date
2010
Author(s)
Chiang, Chien-Wen
Abstract
The major application of WSN (Wireless Sensor Networks) is to monitor the environment and transmit the sensed data to the base station. Because sensor nodes are resource limitation, we need a technique called data aggregation to collect and process the sensed data in networks. The data aggregation technique can reduce the packet numbers of data transmitted. However, the attacker may attack the aggregator node to cause the wrong aggregation result. Although different secure data aggregation schemes were proposed recently, they are not complete on the considerations of security and communication overhead. This paper proposes a key distribute scheme that bases on an implicit security technology. We propose and compare 3 grouping algorithms, Top-down grouping algorithm, Bottom-up algorithm, and ABG (Aggregator Based Grouping) algorithm. Experiments show that ABG can save about 16%~ 36% computations of encrypted and decrypted data. Each node generates a group key and stores a group parameter to protect the data, and the time complexity of generating key is . Each node stores a group parameter and a hash function. Because of the scheme uses the symmetric encryption and hash function, it can reduce the computation overhead of nodes. The scheme conform most of security requirement, and it can resist some well-know attacks. So the scheme not only consumes less resource, but also safety.
Subjects
Wireless sensor networks
Secure data aggregation
Key distribution and management
Implicit security
Key pre-distribution
Type
thesis
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