http://www.iaeme.com/IJEET/index.asp 297 editor@iaeme.com International Journal of Electrical Engineering and Technology (IJEET) Volume 11, Issue 3, May 2020, pp. 297-308, Article ID: IJEET_11_03_033 Available online at http://www.iaeme.com/IJEET/issues.asp?JType=IJEET&VType=11&IType=3 ISSN Print: 0976-6545 and ISSN Online: 0976-6553 Journal Impact Factor (2020): 10.1935 (Calculated by GISI) www.jifactor.com © IAEME Publication A NOVEL HERMITIAN UNITAL BASED KEY PREDISTRIBUTION SCHEME Riaz Shaik, Farzana Syed, Siva Sankar Avulamanda and Purimitla Bhanuchand Department of Computer Science Engineering, St.Marys Group of Institutions, Guntur, India ABSTRACT Network Scalability became a major concern these days for Wireless Sensor Networks because of their resource constrained nature and increasing number of applications which need to satisfy various communicational and computational requirements. Many key predistribution schemes have been designed to achieve a significant trade-off between energy consumption and scalability of network, but which scheme is more efficient is still debatable. Unital design in combinatorial mathematics is a novel technique which can be used for key predistribution is WSN’s. This paper presents a novel key predistribution scheme based on this unital design. The proposed scheme is compared with several other existing predistribution schemes and the performance results obtained shows better trade-off between energy consumption and scalability than many other schemes. Key words: Wireless sensor networks, Scalability, Key management. Cite this Article: Riaz Shaik, Farzana Syed, Siva Sankar Avulamanda and Purimitla Bhanuchand, A Novel Hermitian Unital Based Key Predistribution Scheme, International Journal of Electrical Engineering and Technology, 11(3), 2020, pp. 297-308. http://www.iaeme.com/IJEET/issues.asp?JType=IJEET&VType=11&IType=3 1. INTRODUCTION Wireless Sensor Networks will be generally used as a part of the not so distant future because of their expansiveness of uses in many fields like military, agriculture, home monitoring etc. Wireless sensor networks consists of small power and battery constrained named nodes which are capable of performing *wireless communication over a limited area. [1]. Key predistribution is a technique of loading each node with a set of keys before the deployment. Many key predistribution schemes are developed by various researchers in the past years which provides a better maintainence of key management in WSN’s. Basically a key predistribution scheme consists of three phases. They are: 1) Key Predistribution, 2) Shared Key Discovery and 3) Secure link establishment. In the first phase each node is loaded with a set of secret keys from the key pool. In the shared key discover phase, each sensor node finds other sensor node to communicate and a secure link is established when two nodes share a common secret key. In the final stage paths are established using these links forming a connected graph of network.