HOW TO HIDE WORDS IN A PICTURE PASSWORD

HOW TO HIDE WORDS IN A PICTURE PASSWORD

To extract a hidden message from a bitmap, open the bitmap file and specify the password or key you used when hiding the message. Grayscale noise is less visible in most images. If the grayscale flag is set, all components of the color are changed. Save the bitmap by clicking the Save button. Then it replaces the R, G or B component of the pixel (according to the color component index) with the message-byte, and repeats the procedure with the next byte of the message. It increments or resets the color component index, to switch between the R, G and B component. After that it reads a byte from the message, reads another byte from the key, and calculates the coordinates of the pixel to use for the message-byte. The application writes the length of the message in bytes into the first pixel. Next step, enter the secret message or choose a file, and click the Hide button. The longer your key file or password is, the less regular the noise will appear. I don't recommend text files, because they may result in a quite regular noise pattern. This password or key will be treated as a stream of bytes specifying the space between two changed pixels. The key file can be any file, another bitmap for example. To hide a message, open a bitmap file, then enter a password or select a key file. Wouldn't it be nice, if everyone could open your encrypted files, and see noisy photos of some old friends instead of your private data? They surely wouldn't look for pieces of encrypted messages in the pixel values. A file encrypted with algorithms like PGP are not readable, but everybody knows that there is something hidden. There is only one safe place for private data and messages: the place where nobody looks for it. This article describes how any data can be hidden in the noise pixels of an image.

How to hide words in a picture