Efficient and Advanced Encryption using Hill Cipher and RGB Image Steganography
Sunita Rani, M. Tech, Bhagat Phool · 2016
This work enhances the message capacity and increases the security for the communication of message between two ends. In the existing work the data hided in to the image is in the raw form, if any unauthorized entity gets to know about the text hiding then text can be extracted. This problem is removed by encrypted the text before hiding inside the image, so that if user extract the data even though he is not able to understand it. The proposed method uses the hill cipher technique to secure i.e. encrypt the text. While in the decryption the text is decrypted after the extraction from the image. Moreover, the capacity of the image to hide the data effectively is limited. This problem is solved by compressing the text so that the same amount of text takes less number of bits to be stored. Overall the firstly the secret text is compressed by using the LZW compression algorithm. Then this compressed text is encrypted using hill cipher then this compressed and encrypted text is hided inside the image using the existing technique.