Hybrid Encryption Algorithm to Detect Clone Node Attack in Wireless Sensor Network

Wireless sensor network (WSN) is the collection of sensor nodes which are distributed in a specific environment. WSN is resource-controlled network which is vulnerable to physical attacks i.e. clone node attack. An attacker acquires information from captured node and then creates the cloned node in the WSN. The main purpose of the cloned nodes is to control the entire network and increase the invasion in the sensor network. When communicating from legitimate node to other node, the message is not secure, so an attacker can modify it. Current asymmetric encryption methods and symmetric encryption methods can provide a level of security, but there are some limitations in it. The hybrid encryption method combining the asymmetric and symmetric methods which will offers high security with minimal key management. We have proposed a new hybrid secure encryption method in this paper which combines the asymmetric and symmetric cryptography method. The proposed efficient algorithm to protect communication from clone node attacks in wireless sensor network. The hybrid algorithm uses advanced cryptographic standards AES, BSDN and Dual RSA encryption techniques and MD5 hash functions. In this algorithm, message is divided into three parts and BSDN, AES and Dual RSA encryption are parallel implemented to the sub-message. The proposed algorithm is analyzed based on parameters such as encryption, decryption and execution time. The result shows that proposed encryption algorithm works better in terms of encryption and decryption time.