A Survey on Cryptography and key distribution in Wireless Sensor Network with Security Attack and Challenges (original) (raw)

2013, INTERNATIONAL JOURNAL OF ENGINEERING DEVELOPMENT AND RESEARCH (IJEDR) (ISSN:2321-9939)

Wireless Sensor Network(WSN) are consists of large number of low power sensor nodes. Security in WSN is very crucial when there are Eavesdropper. There are Two Type of Cryptography method. Symmetric which use same key for both encryption and decryption. Another one is Public key cryptography in which use two different keys, public and private. Pairwise key establishment is a fundamental security service. There are several existing key management schemes have been shown for the establishment of pairwise key between sensor nodes. Here there are two key pools in which one key pool are the hash value of the keys in another key pool. Present scheme provide better resilience against node capture attack. Different types of Security attack happen in WSN like jamming, Tampering, collision, hello flood etc. the challenges in it are Measuring confidentiality, Timing Obfuscation, Secure aggregation, Topology, Obfuscation, Scalable Trust Management Aggregation with Privacy.