Conceal Message and Secure Video Transmission

The paper provides a method for communicating the message (text, image and video) secretly using a cover video. This can be achieved by using the combination of both steganography and cryptography. Steganography is the science of hiding information. Cryptography is the study of transform the information in order to make it secure from unintended recipients or use. Here cover video is considered as a sequence of image frames. If message is a video then each secret image frames of the secret video is suitably embedded into image frame of cover video or if the message is a text or image then randomly select a frame of cover video and embedded into it. Here, the bits of the message frame are directly embedded into least significant bit plane of the cover-frame in a certain sequence. Modulating the least significant bit cannot be identified in human perceptible difference because the amplitude of the change is small. Each pixel (8 Bits) is hided in 4 pixels (4*8=32 bits) of video frame (2 bit of message image is substituted in LSB). Finally the resultant video is also encrypted with random key. Based on the user id and password we can extract the video (contain both cover and message video). If the user id and password is correct then by using LSB extraction of the resultant video we will get the message video and by MSB extraction we will get the cover video. If the user id and password is incorrect then the message is deleted from the cover video