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The proposed and implemented AES block cipher provides confidentiality to the communication between nodes and base station. The energy efficiency of LEACH clustered network and with added security is analyzed in detail. In LEACH clustering along with the implemented data aggregation technique 48% energy has been saved compared to not clustered and no aggregation network. The energy consumption overhead of the AES-based security is 9.14%. The implementation is done in Contiki and the simulation is carried out in Cooja emulator using sky motes.<\/p>","DOI":"10.4018\/ijertcs.2014010102","type":"journal-article","created":{"date-parts":[[2014,12,10]],"date-time":"2014-12-10T07:21:02Z","timestamp":1418196062000},"page":"15-36","source":"Crossref","is-referenced-by-count":3,"title":["Energy Consumption Analysis of Secure and Clustered Wireless Sensor Network"],"prefix":"10.4018","volume":"5","author":[{"given":"Ashim","family":"Pokharel","sequence":"first","affiliation":[{"name":"Department of Information Technology, University of Turku, Turku, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ethiopia","family":"Nigussie","sequence":"additional","affiliation":[{"name":"Department of Information Technology, University of Turku, Turku, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2432","reference":[{"key":"ijertcs.2014010102-0","doi-asserted-by":"publisher","DOI":"10.1109\/TIM.2008.925344"},{"key":"ijertcs.2014010102-1","doi-asserted-by":"crossref","unstructured":"Casado, L., & Tsigas, P. 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