International Journal of Science, Engineering and TechnologyAuthors: Sunita Kulkarni, Preksha M, S Nandan, S Vishal, Chaluvaraj Naik
Abstract: In this paper, a safe Morse code communication performance based on ESP32 and the combination of cryptography methods is proposed. The system converts the input entered by the user to Morse code on the fly, encrypting the encoded message and transmitting it on air to a receiver module. Encryption and scrambling are done at the transmit end and at the receive end the data is decrypted and descrambled in text and also via voice and display. It features button-based morse input, display feedback (LCD screen) and optional speech processing for improved accessibility. Signal processing, encryption and communication are handled by the ESP32 microcontroller, which allows for low power and reliable operation. The experimental realization confirms that the system can be used for time critical encoding, transmission and decoding of messages in Morse with securing data. They are robust in settings with no or minimal network infrastructure, or in emergencies when traditional methods of communications break down. The usage of cryptography in morse transmission improves confidentiality, could be used in defense, disaster management and secured IoT communication applications.
