SECURING BANGLA TEXT COMMUNICATION USING IMAGE STEGANOGRAPHY WITH DYNAMIC SUBSTITUTION IN IOT ENVIRONMENT

Abstract

Privacy and security of information are the prime concerns of today’s internet users. They want to get better and reliable services without sacrificing privacy from the current paradigm like the Internet of Things (IoT). In order to ensure IoT as a truthful service platform for the vast users, we need to protect the information that evolves throughout the internet and in the storage. In this paper, we propose a steganographic method for Bangla text communication over the unsecured internet based on RGB color image with the help of secret key for better protection of information. The proposed system consists of four main components namely preprocessing, embedding, extraction, and post-processing. We use dynamic positioning in case of substitution of (Bangla) text into the image. The secret key is transmitting throughput the image so that there is no extra hassle for communicating the secret key. We justify our proposed approach by using simulation with respect to imperceptibility, capacity, and robustness. We compare the result of the proposed method with other existing methods and get a better result over several existing efficient methods.