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 symmetrickey 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.