Energy Efficient Encryption using Counter mode of operation in Wireless Sensor Network

Sensor networks are deployed for various monitoring applications. The reporting should be in secure manner so that the adversary can’t forge the data and can be prevented from any disclosure. In this paper we have identified those calculations which are not necessary to be performed on sensor node for securing the network, shifted to base stations to save the energy at nodes. Using pre-processing approach saves energy consumption at nodes for producing Secured/ Encrypted data. So here we are proposing EEECMO method Energy Efficient Encryption using Counter mode of operation in such a way that before the deployment, the base station process the part of the security algorithm that involve the key in the setup phase. In this fashion, we are getting secure communication network without the distribution of the key among the sensor nodes and also minimizes energy consumption at sensor node. Key WordsSensor network, Security, confidentiality, Block Cipher, Encryption and Decryption, , Counter mode, pre-processing, Stream Cipher.