Abstract

The pros and cons of the existing encryption algorithm for Wireless Sensor Network(WSN) were analyzed.A chaotic block cipher based on chaos box was proposed for WSN in accordance with its security request.Random number was generated by mainly using the chaotic aperiodicity,unpredictability and other related characteristics,and corresponding S box was designed by using random number.Finally,conclusion was made by comparing RC5 and RC6 at statistical performance and energy consumption.The results show this encryption scheme has better performance for WSN.

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