Bootstrapping & Symmetric Key Based Pre-Distribution Scheme for Wireless Sensor Networks?

In day to day life almost everyone is using wireless sensor based networks which are very sensitive in nature due to their resource oriented limitations and to overcome this we need to authenticate and encrypt the messages sent among sensor network nodes in a network scalable environment. In the past decade many asymmetric algorithms have been proposed such as Diffie-Hellman and public key based schemes but they are not suitable for wireless sensor networks as we are implementing Symmetric key based schemes and in this paper we propose three new mechanisms for key establishment using a framework that is based on the pre-distribution of random set of keys to each node or a node pair. Firstly in the n-composite keys scheme we remove the predicting large-scale network attacks in order to significantly strengthen random key pre-distribution against small-scale attacks then secondly we propose reinforcement scheme in a multipath environment to strengthen the security between any two nodes by leveraging the security of other links and lastly we propose the random pair wise keys scheme which perfectly preserves the secrecy of the rest of the network when any node is captured by providing node-to-node authentication.