Modified Pairwise Key Pre-distribution Scheme with Deployment Knowledge in Wireless Sensor Network
Sanchita Gupta, Pooja Saini · 2013
To achieve security in wireless sensor networks it is important to be able to encrypt the messages sen t among the sensor nodes. Keys for encryption and authenticatio n purpose must be agreed upon by communicating nodes. Due to the resource constraint (limited memory size), achievin g such key agreement in wireless sensor network is extremely difficult. Many key agreement schemes used in general networks, such as Diffie-Hellman and public key based schemes, are not suitable for wireless sensor networks. Pre-distribu tion of secret key for all the pair of nodes is not possible due to the large amount of memory is used when network size is large. In this paper, we provide a view of pairwise key pre-distribution scheme and the deployment knowledge; and also describe the pairwise key pre-distribution scheme with d eployment knowledge as an improvement. Deployment knowledge avoids the unnecessary key assignments and improves the performance of the sensor networks in terms of memory usage.