Low-Power Advanced Encryption Standard for Implantable Cardiac Devices
Cory Davis, Alekhya Muthineni, Eugene B John · 2019
Advanced Encryption Standard (AES) is one of the most popular and widely adopted symmetric encryption/decryption algorithms. The increasing use of AES in severely power constrained devices such as the implantable cardiac devices makes the low power implementation of AES critical. Traditionally, one of the AES core functions, ShiftRows, is accomplished by implementing a series of shift registers. In this paper we propose a new power efficient implementation of AES by introducing a new realization of the ShiftRows operation using muxes. Simulations of these implementations, using 45nm and 90nm technology nodes, yielded respective averages of 13.5% and 10.6% reduction in overall power consumption of AES.