Abstract
Primary objective of the proposed system is to achieve higher level of confidentiality in absence of standard encryption techniques which add up to complexity of the stego system.
 In this system the principle of dominoes is adopted in the way of the selection of the pixel of the image to hide the ciphertext. Where domino stones models are prepared in advance, which are two-dimensional matrices (2*6), and selecting one of them and start the projection of the model on the image and hide the ciphertext in the pixel corresponding to the points in the domino model
 Experimental results show that the proposed system effectively achieve the objective. Even though the proposed system gives good enhancement to the steganoraphy technique and there is no difference between the cover-image and the stego-image can be seen by the human vision system (HVS), so this method can be considered as a success and can be adopted in the field of steganography.
Highlights
Steganography” is a Greek origin word which means “hidden writing”
Peak Signal-to-Noise Ratio (PSNR) is measured in decibels avoids this problem by scaling the mean-squared error (MSE) according to the image range [11]: Where R, is the maximum fluctuation in the input image data type
They will be dismantled to the main colors (Red Green Blue), the matching of the data in 1 or 2 LSBs with the encrypted text data is verified, and the data of each color is replaced with the text data after it’s converted to the binary system, and this process is repeated until finishing the domino model which was selected and registered in an index table with the number of points and the location of the used bits of the image to hide, and the right half of the matrix will determine the selection of the following model of the remaining dominoes, this process is repeated until the completion of the entire text is hidden in the image
Summary
Steganography” is a Greek origin word which means “hidden writing”. Steganography word is classified into two parts: Steganos which means “secret or covered” (where you want to hide the secret messages) and the graphic which means “writing” (text). In the hiding information the meaning of Steganography is hiding text or secret messages into another media file such as image, text, sound, and video. In the Steganography system scenario, before the hiding process, the sender must select the appropriate message carrier (i.e image, video, audio, text) and select the effective secret messages as well as the robust password (which suppose to be known by the receiver). 3. Evaluation Parameters To measure the image quality, commonly used Mean-Squared Error and Peak Signal-to-Noise Ratio to compare stego-image with cover results [11]. Peak Signal-to-Noise Ratio (PSNR) is measured in decibels (dB) avoids this problem by scaling the MSE according to the image range [11]: Where R, is the maximum fluctuation in the input image data type. If it has an 8-bit unsigned integer data type, R is 255, etc [11]
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