An Overview of Secure Data Aggregation in Wireless Sensor Network

Data Aggregation is widely used technique in wireless sensor networks (WSNs). The Security become a major issue, data confidentiality and data integrity in data aggregation. data aggregation should be incorporated in order to save energy. In this paper, the secure data aggregation schemes are categorized into hop by hop aggregation and end to end aggregation, and then the secure data aggregation schemes are reviewed and analyzed based on four phases: bootstrapping, data aggregation, verification and remedy. Data aggregation could save energy and bandwidth of the networks. end to end secure data aggregation can guarantee end-to-end confidentiality and privacy. Keywords— Data aggregation, wireless sensor networks, data confidentiality, data integrity, Homomorphic