are used to embed the information. This technique is very easy to be detected. A more secure system is for the sender to hide the text bits randomly in the image [6].
At the beginning of the encoding process, the program reserves 29 bits from the image’s header; 8 bits for inserting a letter ‘m’ which indicates if this image has text hid in it or not. This is for facilitating recognizing the image that contains hidden text from other images. 8 other bits for a letter ‘t’, indicating if the text the user entered is a text file, otherwise the text is from a text box. 3 bits are reserved for the number of LSBs the user chose (1, 2, or 3). These LSBs are based on the image’s colors (the RBG), if 1 is chosen, it means we are only hiding in the Red color, 2 …show more content…
This variation depends on the text’s size, if it’s too large, it’s more recommended to hide it using the 3 colors. In this case we will be having more free bits to hide in. 10 other bits are reserved for the text’s length. In addition to that, the stego-image is saved as a bmp file; this is to eliminate the probability of compression which is the probability of some data from the embedded message to be lost. On the other hand, the program decodes. A user chooses the stego-image and presses the button Extract Hidden Text; the text will be extracted from the image to a text box or to a folder mentioned in a notification if it was hidden as a text file. The program uses the same code as the encoding process to retrieve the content. When the user chooses the image, the program retrieves the bits in a sequential order, and then