Description

Data aggregation is an efficient way to minimize energy consumption on sensors. In this paper, we Propose scheme is a practical secure data aggregation scheme, RSA, based on an additive homomorphic encryption scheme, an identity-based signature scheme, and a batch verification technique with an algorithm for filtering injected false data. In this design an encryption, decryption and signature techniques are used and also the base station can recover all sensing data even these data has been aggregated. The base station can perform any aggregation function on them. Without compromising any nodes an attacker can interrupt the network system. The hierarchical RSA algorithm is detects the malicious behavior of the nodes. To provide hop-by-hop authentication, we use a pairing-free identity based signature, so the BS can verify the authenticity of all the transmitted encrypted data. To improve efficiency of multiple signature verifications, we need a signature scheme in which many signatures from different signers on different messages can be verified quickly. However, the computational cost for multiple signature verifications, can negatively impact the performance of WMNs. Batch verification techniques can reduce verification costs for multiple signatures. Adversaries can attempt to negate the advantages of batch verification by corrupting messages or signatures within a batch. To counter such attacks, efficient methods are required to identify invalid signatures in batch verification. Our scheme supports fast multiple signature verifications at the BS by applying binary quick search to the batch verification technique for filtering injected false data.