Video steganography technique using factorization and spiral LSB methods

Abstract

The protection of confidential information from intruder has been a great matter of concern since ancient times. Nowadays use of internet has increased tremendously. As a result of it Digital media gathers maximum amount of confidential data. To maintain the secrecy over confidential data, different methods of hiding have been evolved. Steganography is one of the emergent area where maintaining the privacy of secret data is of utmost importance. It is an art of hiding the secret data or confidential information inside the digitally covered information. In this paper we proposed a new technique of video steganography by implementing cover frame pixel randomization, de-randomization and data embedding technique which maintain the quality of the secret data(video file) and prevents it from being accessed by intruders while communication through an open channel. Here we have proposed a new technique using factorization method to scramble pixels of cover frames of cover video file. Then the frames of secret video file is inserted in the scrambled cover frame of cover video file using Spiral (Extended) LSB technique. This method of hiding the secret video in the cover video gives a new security concept of securing the secret data from unauthorized accesses. Peak Signal-to-Noise Ratio (PSNR) is used to measure the quality of stegovideo. Thus this new approach of video steganography shows a very high imperceptibility to human vision and hence is quite efficient.