Investigating and Analyzing the Light-Weight Ciphers for Wireless Sensor Networks

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Executive Summary

The Wireless Sensor Networks (WSNs) are characterized by the severe constraints in the computational, storage and energy resources. Though there has been significant improvement in the available computational resources due to the proliferation of the next-generation sensor nodes, the energy and storage resources of sensor nodes are still limited. As the sensor nodes are often deployed in ubiquitous and pervasive environments, it is necessary to ensure communications security in a WSN. However, the use of the security protocols adds to the associated overhead. Therefore, ensuring communications security in a WSN is a challenge. The authors believe that since the core component of any security protocol is the cipher used therein; the overhead due to a security protocol can be largely reduced, by employing essentially a lightweight cipher.

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