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In recent years, Wireless Sensor Network (WSN) is employed in many application areas such as environmental monitoring, and battle field strategy planning. For many applications of WSN, security is an important requirement. However, security solutions in WSN differ from traditional networks due to resource limitation and computational constraints. This paper analyzes & compares five popular WSN protocols: Tinysec, LLSP, SPINS, LiSP, and LEDS with respect to security requirements, attack scenarios, and performance. The paper also presents application scenarios for general guidance.
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