DESIGN AND ANALYSIS OF A SECURE STEGANOGRAPHIC COMMUNICATION SCHEME BASED ON RGB PIXEL ENCODING

This research proposes a practical and secure steganographic communication method using RGB pixel encoding combined with cryptographic protection. Message data is segmented into 3-bit, 3-bit, and 2-bit blocks, then embedded into the RGB channels of a digital image. A corresponding logarithmic (LOG) table is generated and encrypted using the Rijndael Managed algorithm to enhance confidentiality and defense against cryptographic attacks. Comparative analysis shows that this method preserves image quality with under 1% variation in pixel intensity, outperforming traditional techniques like Least Significant Bit (LSB) embedding. The approach ensures a robust, imperceptible, and secure communication channel, offering strong resistance to steganalysis.