Software Implementation of Modified PRESENT Lightweight Cryptography for Low Power Consumption in AVR Microcontroller رسالة ماجستير

Abstract

The research aims to establish a modified version of the PRESENT lightweight cipher to consume less power in the AVR 8-bit microcontroller Atmel 128 with respect to code size metric and security metrics due to the Internet of Things hardware limitations. FELICS (Fair Evaluation of Lightweight Cryptographic Systems) framework simulated power consumption and code size. The results showed that the PRESENT cipher consumes many clock cycles compared to all other SPN ciphers in C software implementation. The P-layer of PRESENT consumed the majority of total power. The proposed MPRESENT cipher decreased the number of clock cycles from 3 × 107 clock cycles to 1.5 × 106 cycles to encrypt 128-bit. The code size of our proposed MPRESENT needed 2754 bytes, while other ciphers need more code sizes, such as LED, AES, Robin*, and Fantomas. The avalanche effect evaluated the result of security metrics by changing one bit in the plain text to see the relationship between the cipher and the plain text and changing one bit in the key. By analyzing the 8,384-bit dataset, the security results showed that changing one bit in the plain text of the original PRESENT changes around 32 bits; however, our proposed MPRESENT changes 31.38 bits over 64 bits. The proposed MPRESENT showed good results in terms of power consumption, code size, and avalanche effect.