  Proportional to the growth in the usage of Human Sensor Networks (HSN), the
volume of the data exchange between Sensor devices is increasing at a rapid
pace. In this paper, we have proposed an Energy Efficient Lightweight
Encryption (EELWE) algorithm for providing the confidentiality of data at the
sensor level, particularly suitable for resource-constrained environments.
Results obtained have proved that an EELWE consumes less energy relative to
present lightweight ciphers and it supports multiple block sizes of 32-bit,
48-bit, and 64-bit.
