Colour Image Steganography Using SHA-512 and Lossless Compression

• Main Authors: Ng, Ke-Huey, Liew, Siau-Chuin, Ernawan, Ferda
• Format: Article
• Language: English
• Published: CESER Publications 2018
• Subjects: QA75 Electronic computers. Computer science
• Online Access: http://umpir.ump.edu.my/id/eprint/24043/1/Colour%20Image%20Steganography%20Using%20SHA-512%20and%20Lossless%20Compression1.pdf; http://umpir.ump.edu.my/id/eprint/24043/; http://www.ceser.in/ceserp/index.php/iji/article/view/5405

This paper introduces a colour image steganography that enhances the existing LSB substitution techniques, improve the security level of hidden information and increase embedding capacity of hidden-data. Lossless image compression technique will be utilized to compress secret information and Hash-function is used to hash the hidden information. Hash-function will be executed in the stego-image and its values will be stored in the host-image for further checking during extraction process. The proposed method demonstrates significantly improvement in terms of information security, embedding capacity and quality.