Design an Improved Encrypting Key Pad Using AVR-ATXMEGA Microcontroller

This paper describes the design and implementation of an Encrypting Key Pad which improve previous designs in view of cost, parts availability, speed and has simple design using AVR´s ATXMEGA single-chip microcontroller. Encrypting key pad is used in many information security applications like financial or military applications. The designed system uses the Data Encryption Standard (DES) and Triple-DES to provide high levels of communication security.