Compression Text by Coding and Hiding in Color Image

Recently, serious and enormous security challenges have led to the development of new and secure methods for data transmission, reducing the chances of hackers using their methods to analyze confidential information between the two parties. Therefore, data security and protection are among the most widely used techniques in the field of computer science, given their great importance in all fields, whether political, economic, or military. The primary objective of this research is to provide a hybrid security method for transmitting confidential text using encryption and steganography together, combining both algorithms to achieve high levels of data security. Furthermore, data compression is an integral part of information technology in our lives, as compression algorithms have made multimedia (text, images, audio files, and video) available for publishing on websites. We proposed first compressing the text data to reduce size and cost, then using a random key generator to encrypt the data and hide it in a colored image cover. The method was tested using texts of different lengths and also applied to different colored cover images, and the work was evaluated using PSNR. The time required for encryption and decryption was also evaluated to measure the effectiveness of the recommended methodology.

Compression, encryption, steganography, Color Image.

10.52113/2/12.01.2025/63-76