Abstract :In this paper, a real-time secure communication application based on chaos has been implemented through a digital hardware, Arduino. Digital information is encrypted using exclusive or operation in the algorithm to make secure communication. In the application, two Arduino Uno boards are used, one of which is the transmitter and the other is the receiver of the communication system. Communication between the transmitter and receiver circuits is provided via infrared signals. Infrared transmission requires minimum power to operate and can be set up easily at low cost. Chaos dynamics is utilized for generating secret encryption keys which will be used to mix original digital information. The encryption algorithm used in the application has a symmetrical structure, so the same keys are produced in the transmitter and receiver sides. Arduino based transmitter and receiver boards are programmed in such way that data transmission takes place over infrared signals, and the chaotic system that will be used as key generator, is provided to run in real-time on both sides. This paper demonstrates the usability of chaotic systems in secure communication systems in a fast and effective way. In addition, the easy applicability of this study reveals that other multimedia information can be transmitted on different platforms with a similar approach. Keywords : Chaos, Secure Communication, Encryption, Arduino
