Ahmed E. El-Din Khaled, Rabie A. Ramadan, and Magda B. Fayek
Key management, network lifetime, WSN security
Security is considered a challenge for wireless sensor networks (WSNs) due to the critical information transferred through the collection of smart sensor nodes forming the network. However, these nodes suffer from different limitations including memory available, computational and communicational limitations. Clustering these nodes is considered as one of the main solutions for prolonging the lifetime of the network. Low-energy adaptive clustering hierarchy (LEACH), stable election protocol (SEP) and hybrid energy efficient distributed clustering protocol (HEED) are considered the most famous clustering algorithms. In this paper, we propose a security framework called Virtual ECC group key (VEGK) merging elliptic curve cryptography (ECC) with symmetric pairwise keys along with VEGKs. In addition, we believe that merging the security with clustering will be beneficial to the energy saving in WSN. Our scheme will modify these clustering algorithms by introducing tree structure rooted at the base station to ensure the connectivity of the whole network. Based on the analysis of different scenarios, our proposed security framework is proved to protect the network from many attacks.
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