Multi-symmetric Ciphering System Module Based on Microcontroller

Abstract

It is widely recognized that data security will play a central role in the design of future IT systems. Many of those IT applications will be realized as embedded systems, which rely heavily on security mechanisms. Examples include security for wireless phones, wireless computing, and ATM security system in Banks. All modern security protocols use symmetric-key and public-key algorithms. This contribution presents a ciphering module that surveys several important cryptographic concepts and their relevance to embedded system applications. This study presents a module that includes three different symmetric ciphering algorithms: DES, DES-EC and AES based on microcontroller. Depending on the application and the data type, each user can select the suitable algorithm from the presented module. This study provides a comparison between the regular DES and the presented new DES. A comparison has been conducted for those encryption algorithms at different settings such as the key size, block size, speed, security, and the execution time.