A Secure Data Transmission By Integrating Cryptography And Video Steganography

Abstract

Advances in digital content transmission have
increased in past few years. Security and privacy issues of the
transmitted data have become an important concern in
multimedia technology. In this paper proposes a video
steganography method for transmitting data securely.
Steganography means covered writing it includes process of
concealing information within other file and also conceals the
fact that a secret message is being sent .Video Steganography is
to hide the existence of the message from unauthorized party
using Video as cover file and hiding data in video. In this work
a very simple and real time algorithm is used for the
encryption of the images which are the basic building blocks of
any video file. In the proposed research paper the video is
distributed into the photo frames using a matlab code and all
the frames are sequentially stored. Each such frame contains a
combination of red, blue and green layers. If we consider a
pixel as an 8 bit value than each pixel has the value in the
range of 0 to 255. In this work, for each frame four pixels
situated at the top left and right and the bottom left and right
corner are modified so as to insert text in each image. Text
data is encrypted using AES algorithm. After the completion of
the pixel value changing all the images is placed in a sequential
manner and then all the frames are cascaded for generation of
the original video file with encryption. This new video is almost
similar to the original video file with no changes visible to the
naked eye.