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Availability of data anywhere and ease of access and interception the information in different forms as text ,images ,video…etc., create an important issue represented by data security both steganography and encryption was appeared to achieve this mission .  In this paper a hybrid technique was used to secure messages of grayscale and colored images in RGB cover image by encrypting the message with Hill encrypting algorithm and hiding it by LSB method in RGB image with random locations generated by seed number and taking three LSB bits , many different sizes of images was experimented and results was analyzed by PSNR , Correlation and histogram analysis methods , all proves the efficiency of proposed technique in securing images .

Using LSB Method For Hiding Hill Encrypted Grayscale And RGB Images In RGB Image