Secret Key Steganography technique based on three-layered DWT and SVD algorithm
|International Journal of Engineering Trends and Technology (IJETT)||
|© 2016 by IJETT Journal|
|Year of Publication : 2016|
|Authors : Priyanka Chouksey, Dr. Prabhat Patel
|DOI : 10.14445/22315381/IJETT-V35P288|
Priyanka Chouksey, Dr. Prabhat Patel"Secret Key Steganography technique based on three-layered DWT and SVD algorithm", International Journal of Engineering Trends and Technology (IJETT), V35(9),440-445 May 2016. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group
Steganography is a technique of hiding secret messages in another data (which can be a video, an audio, an image or a text) to protect unauthorized access. Regardless of years of research in the area of data hiding, it is still a very challenging task. A combination of DWT decomposition and singular value decomposition (SVD) is proposed to achieve effective hiding of secret information into an image. The proposed technique finds out the pixels to hide secret data (Text) by performing two approaches successively. The first approach (DWT) decomposes the cover image iteratively to find the high frequency components of it, since human eyes are less sensitive to high frequency. The second approach (SVD) again decomposes the high frequency components of cover image to find singular value matrix where secret data can be hide securely. The BER has been used as a comparison parameter for proposed work and previous work. In addition to this, noise is also added before transmitting the data hided image called ‘Stego’ image. The BER between retrieve data and original data is simulated.
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Steganography, DWT, Singular Value Decomposition, BER and SNR, Stego image.