Quantum-Integrated Steganography for Secure Communication using QKD and LSB Techniques
Adhavan Arumugam, Bibin Eswaran, L. V. Ramesh, C. Nallusamy · 2025
With the help of Caesar cypher encryption and Quantum Key Distribution (QKD) for increased security, this project offers a web-based tool that embeds and extracts messages from photos using steganography techniques. Using Flask and OpenCV, the application lets users upload images for embedding in messages or stego images for extracting messages. The encrypted communications blend in perfectly with the picture pixel data by using the Least Significant Bit (LSB) technique. The system provides strong error handling for file uploads and processing, and users can enter their messages and a shift value for encryption. The extraction procedure offers a user-friendly interface for encrypted communication by retrieving and decrypting the encoded message from the steno image. By incorporating QKD, the program reduces the danger of key interception by facilitating the creation and exchange of cryptographic keys over quantum channels. This project highlights the possibilities for safe data transfer across a range of domains by showcasing the real-world implementation of cryptography and steganographic techniques.