Date Added: May 2012
This paper discusses different issues of Wireless Sensor Network (WSN) and the relevance of the Elliptic curve y cryptography. Security in WSN is a greater challenge in WSN due to the processing limitations of sensor nodes and nature of wireless links. Extensive use of WSNs is giving rise to different types of threats. To defend against the threats proper security schemes are required. Traditionally security is implemented through hardware or software and is generally achieved through cryptographic methods. Limited area, nature of links, limited processing, power and memory of WSNs leads to strict constraints on the selection of cryptographic techniques. Elliptic Curve Cryptography (ECC) is the best candidate due to its smaller key size.