Image Steganography System using Python Cryptographic Security

As the digital communication is rapidly growing, data security, and the invisibility of information transmission has become a vital issue. Conventional cryptographic methods secure the information but reveal the existence of encrypted information whereas steganography hides the information but fails when applied alone. In order to address these shortcomings, this paper will discuss a secure image steganography model that combines AES/RSA encryptions with the Least Significant Bit (LSB) image steganography. The system is a secure encrypted and embedded system to insert text and images, audio, and the PDF files into digital images with the aid of Python and OpenCV, which can easily extract the data accurately and reversible to the authorized user. The quality of the image is maintained by pixel- to-pixel comparison and PSNR analysis, and the results prove that there is not much visual impairment. The suggested solution provides a dual-layer security, high imperceptibility and practical ability in a secure communication and privacy of data.