Concealed Data Aggregation Scheme for Wireless Sensor Network Applications

Data aggregation scheme is a technique which reduces the large amount of transmission in wireless sensor networks. In the existing system, homomorphic encryptions are used to conceal communication during aggregation. The enciphered data can be aggregated algebraically without decryption, hence compromising the security issues and adversaries are able to collect valuable data. Hence these schemes become insecure in case some sensor nodes are compromised, it does not satisfy multi-application environment and they do not provide secure counting which may lead to unauthorized aggregation attacks. Therefore , we propose a new concealed data aggregation scheme extended from Boneh et al.’s homomorphic public encryption system. First, it is designed for a multiapplication environment. The base station extracts application-specific data from aggregated cipher texts. Secondly it reduces the impact of compromising attacks. Finally, it degrades the damage from unauthorized aggregations, hence providing the security. Keywords— Wireless Sensor Network, Concealed Data Aggregation, Homomorphic Encryption, CDAMA, Secure Counting.