An approach to ensure integrity of sensed data using elliptic curve cryptography scheme

Abstract

Now a days in many applications wireless sensor networks are used. In Wireless sensor networks set of nodes are distributed for recording and for monitoring the physical environmental conditions, and the data is collected and organized at the central location by using one or more neighboring nodes. In sensor networks, mainly the energy is consumed for the purpose of data transmission. In sensor nodes for reducing the consumption of energy data aggregation is an important approach. Hence it has emerged as a basic approach for reducing the number of transmissions of sensor nodes, where the overall power consumption in the network also minimizes. But while performing the processes of data aggregation the data can be easily compromised by number of attackers. Hence security must be provided while performing aggregation. An identity based aggregate signature (IBAS) scheme is shown based on the elliptic curve cryptography scheme, where it uses a smaller key for providing an equivalent level of security. Because of its key size length ECC obtains faster computation and lower power consumption and also requires only small memory and bandwidth.