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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Secure Data Aggregation in WSN ： ウィキペディア英語版 Secure Data Aggregation in WSN A Wireless Sensor Network (WSN) typically consists of a sink node sometimes referred to as a Base Station and a number of small wireless sensor nodes. The base station is assumed to be secure with unlimited available energy while the sensor nodes are assumed to be unsecured with limited available energy. The sensor nodes monitor a geographical area and collect sensory information. Sensory information is communicated to the Base Station through Wireless hop by hop transmissions. To conserve energy this information is aggregated at intermediate sensor nodes by applying a suitable aggregation function on the received data. Aggregation reduces the amount of network traffic which helps to reduce energy consumption on sensor nodes. It however complicates the already existing security challenges for wireless sensor networks and requires new security techniques tailored specifically for this scenario. Providing security to aggregate data in Wireless Sensor Networks is known as Secure Data Aggregation in WSN.〔〔 were the first few works discussing techniques for secure data aggregation in Wireless Sensor Networks. Two main security challenges in secure data aggregation are confidentiality and integrity of data. While traditionally encryption is used to provide end to end confidentiality in Wireless Sensor Network (WSN), the aggregators in a secure data aggregation scenario need to decrypt the encrypted data to perform aggregation. This exposes the plaintext at the aggregators, making the data vulnerable to attacks from an adversary. Similarly an aggregator can inject false data into the aggregate and make the base station accept false data. Thus, while data aggregation improves energy efficiency of a network, it complicates the existing security challenges. ==References== 1. Kiran Maraiya, Kamal Kant, Nitin Gupta “Wireless Sensor Network: A Review on Data Aggregation” International Journal of Scientific & Engineering Research Volume 2 Issue 4, April -2011. 2. Chalermek Intanagonwiwat, Deborah Estrin, Ramesh Govindan, John Heidemann, “Impact of Network Density on Data Aggregation in Wireless SensorNetworks,” November 4, 2001. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Secure Data Aggregation in WSN」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.