A novel block cipher for enhancing data security in healthcare internet of things

The modern technologies and their contributions have made monitoring and communication possible from everything around us with each other with no or little human intervention. Experts named these connected devices as Internet of Things (IoT), or the Internet of Everything which is considered as the next industrial revolution. This open network posts quite good number of security challenges because of the nature of the IoT environment. Thus, this paper proposes a lightweight block cipher called, JAC_Jo, to enhance the security of data transmitted in the healthcare environment with reduced hardware footprints. The master key for data encryption is derived using soft set based key generation algorithm SoftKeyGen() and encrypts 32-bit data using 64 bit key. The proposed block cipher occupies 2109 GEs of area and requires 360.05mW power without compromising the security. The FPGA implementation of the proposed block cipher is presented and the performance of the block cipher is evaluated using Atmel STK-600 device with 128 kb app/boot memory. The security evolution is presented with respect to differential, linear, slide and algebraic attacks.