Secure Steganography System for RGB Images
Fahd Alharbi, King Abdulaziz University, College of Engineering, Rabigh, KSA.
Manuscript received on January 24, 2013. | Revised Manuscript received on February 11, 2013. | Manuscript published on February 28, 2013. | PP: 492-494 | Volume-2 Issue-3, February 2013. | Retrieval Number: C1193022313/2013©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Steganography is the process of embedding data into a media form such as image, voice, and video. The Lest Significant Bit (LSB) is consider as the most widely used embedding technique. LSB embeds the secret message’s bits into the least significant bit plane of the image in a sequentially manner . The LSB is simple, but it poses some critical issues. The secret message is easily detected and attacked duo to the sequential embedding process. Moreover, embedding using a higher bit plane would degrade the image quality severely. Using more bits for hiding in a gray scale image (8-bit) would result in a poor image quality. Thus, the color image which is represented by three bytes one for each color (Red, Green, Blue) are more suitable for hiding more data bits .To increase the security of the data hiding system, we are using a bit plane decomposition based on Fibonacci numbers to decode the RGB pixels’ values. This will allow for using higher bit plane without degrading the image quality. Also, the image’s pixels used for embedding data are selected by using a Pseudo Random Number Generator(PRNG).
Keywords: Steganography, Image, LSB, Fibonacci, PRNG.