Wireless Sensor networks are finding revolutionary applications in 24x7
unattended monitoring remotely. Such randomly deployed sensor nodes (SNs) need
to send data to a central station, commonly known as base station (BS). SNs have
limited energy resources and all possible attempts should be exerted to minimize
energy consumption. But, maintaining secured communication poses additional
challenges. This paper deals with a novel mechanism in establishing shared symmetric key between
any two adjacent SNs by utilizing a 2-D matrix based key pre-distribution scheme between SNs.
Versatility of this scheme is illustrated and enhanced resilency is observed in key distribution system.
The use of multivariate polynomial is explored to have hierarchical authentication scheme between
the BS and SNs be delegating the responsibility to cluster heads.
Keywords: Authentication, Bivariate polynomial, Clustering, Encryption, Energy consumption, Key pool,
Resiliency, Symmetric key, Transducers.
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