Microcontroller based secure GSM communication system : using AES encryption

Abstract

This Project focuses on the security of Short Message Service (SMS) and the use of encryption to protect SMS messages. Encryption is an important factor when confidential data is transmitted over the network. The system developed for end to end secure transmission of the SMS. The algorithm used is AES (Advanced Encryption Standards) algorithm. This application is developed on PIC based microcontroller platform. The most widely used algorithm in different application is AES algorithm. We have developed a system using PIC (Peripheral Interface Controller) Microcontroller and GSM Modem platform which allows the user to encrypt the messages before it is transmitted over the network. This system provides a strong, secure, and fast encryption of the data. There is a large amount of confusion and diffusion of the SMS during encryption which makes it very difficult almost impossible for an attacker or hacker to decrypt the encryption pattern.