Aggregated Identity-Based Signature to Transmit Data Securely and Efficiently in Clustered WSNs

In wireless sensor network (WSN) transmission of data securely is a critical issue. Clustering is powerful and feasible way to improve performance of the WSN system. We study transmission of data securely for clustered WSNs (CWSNs). We use two Secure and Efficient data Transmission (SET) protocols for CWSNs called SET-IBS and SET-IBOOS. SET-IBS uses the Identity-Based digital Signature (IBS) scheme and SET-IBOOS uses Identity-Based Online/Offline digital Signature (IBOOS) scheme. In SET-IBS security depends on the hardness of Diffie-Hellman problem in the pairing region. SET-IBOOS diminishes the operating cost of computation for protocol security, which is important for WSN, while its defense depends on durability of problem of discrete logarithm. Cluster head selection and clustering are important in WSN to route data efficiently. Multi Weight Based Clustering Algorithm (MWBCA) is an extended LEACH where cluster head is elected on weight given to each sensor node. We used Multi Weight Based Clustering Algorithm (MWBCA) for Cluster Head selection, then aggregate data at cluster head and going to provide security using Identity based Digital Signature.