Secure Data Sharing using Medical Image Steganography

The increased popularity of digital media has raised serious concerns over its security-related issue. Security attacks in the form of eavesdropping, masquerading and tampering and in many other forms are very common nowadays. Data hiding is one of the emerging methods that aims to provide for security by hidden secret information into the multimedia content by altering some nonessential component in the host or cover file. Security of data is very important at data communication. Everyday a lot of information is transferred from one user to another the internet and so the possibility of data theft also increases. Steganography provides a solution for the security of information during data transmission. Steganography is the sciences which make valuable information invisible to prevent it from an unauthorized user. So in this project, an image steganography technique is proposed to hide the documents in an image in the transform domain using CMD approach. The document files are carried by the image without revealing the existence to anybody. When the secret information is hidden in the carrier the result is the steganography image. In this work, the results show good quality steganography image and the steganography image is analyzed for different attacks. The steganography images are transferred to multiple receivers based on network strategies. It is found that the technique is robust and it can withstand the attack. The quality of the steganography image is measured by Peak Signal to Noise Ratio (PSNR) and other measurements.