Stego Pi: An automated security module for text and image steganography using Raspberry Pi
Vishnu Sharon, B. Ramaswamy Karthikeyan, Sudharshan Chakravarthy, V. Vaithiyanathan · 2016
Images with embedded data can be used to convey secrets using simple, fast and stand-alone novel algorithms, which when combined together, yields a more complex algorithm. This paper deals with a prime bit-XOR encryption with a recursive diagonal transformation as a pre-processing step and is then embedded using a novel 3 bits per 2 pixels Least Significant Bit (LSB) steganography into the image using the Super-knight's tour Algorithm (for texts) and Discrete Cosine Transform (DCT) based steganography (for images). This entire process is automated using Raspberry Pi in an innovative manner. The results were found to be lossless, secure and high image metric values have been achieved.