Code based threshold scheme on group key transfer protocol for WSN's

A wireless sensor network is a gathering of particular transducers with an interchange framework for checking and recording conditions at differing areas. As there is limited data storage and computational power in sensor nodes henceforth special outlines are required for cryptographic schemes in WSN's. In the existing protocols of group key transfer, all the nodes m jointly generate their secret, but a group of Λ (k < m) nodes can't generate its group key. In this paper, we have given this characteristic to all the nodes so that m or less nodes can generate their group key only after giving successful key generation request to the server. We have implemented the code based threshold scheme in the proposed group key transfer mechanism for wireless sensor environment and our proposed group key protocol is based upon linear secret sharing scheme, Vandermonde matrix, factoring problem and one-way hash function. The proposed scheme allows the implementation of threshold operations for the both group key generation and secret distribution and can also oppose potential assaults and furthermore essentially diminish the computational cost of the framework.