Proportional to the growth in the usage of Human Sensor Networks (HSN), the volume of the data exchange among the Sensor devices is increasing at a rapid pace. Most sensor devices fall under resource constraint devices that handle confidential and sensitive data. Lightweight encoding algorithms are customized for a resource-constrained environment to provide security for the data getting exchanged in sensor devices. Many researchers have been investigating this field. By adopting several performance enhancement techniques, Energy Efficient Light Weight Encryption (EELWE) algorithm is presented in this paper. Proposed EELWE consumes less energy relative to present lightweight ciphers and it supports multiple block sizes suitable for resource-constrained environments. The performance of the proposed algorithm is evaluated on different parameters.

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