Secure Data Hiding in Image over Encrypted Domain

Steganography is a concept of hiding or concealing data in a cover object while the sender and receiver are able to communicate within themselves. The security of data has been prime concern for the people from past and many research works are still going to find out convenient methods to safeguard the communication between people. Intruder can easily detect the information in the links as internet does not have secure links. The transmission of data is required to be protected by limiting the chances for its detection while transmission. In this paper we have proposed a technique for image steganography that embeds or hides important or private messages or files into files like images, audio and video without affecting the quality of actual files. It is achieved by using the Least Significant Bits (LSB) of these files for embedding data in the portion of image, which are not used by the image viewing tools. It allows to embed the messages or files in encrypted form using steganography and uniform embedding algorithm which means that once encrypted, the message or file could be retrieved back (or decrypted) from the image only after specifying the correct password which was given by the sender at the time of embedding data into the image(or encryption).