Steganography: The Art of Hidden Messages
Unseen, Unheard, Unbreakable
What is Steganography?
While cryptography scrambles a message to make it unreadable, steganography hides the very existence of the message itself. The word comes from the Greek words steganos, meaning "covered or concealed," and graphein, meaning "writing."
Imagine a secret note hidden inside a loaf of bread, rather than a locked box. An adversary might find the box suspicious, but they would never think to look inside the bread. In the digital world, the "bread" could be a family photo, an MP3 file, or even a social media post.
How It Works?
Steganography works by replacing non-essential parts of a digital file with the data of your secret message. These changes are so minor that they fall below the threshold of human perception, leaving the original file looking and sounding normal.
🖼️ Image Steganography: We target the least significant bits (LSBs) of an image's pixel data. Each pixel has color values that can be changed by a tiny amount. By altering these LSBs, we encode your secret message without creating a visible difference to the human eye.
📹 Video Steganography: A video is a sequence of image frames. This tool applies image steganography techniques across multiple frames, using the video's large size to hide even larger files, like documents or other images, within a moving picture.
📄 Document Steganography: We hide data by manipulating the file's text structure. This can involve using invisible Unicode characters, altering spacing and formatting, or even embedding data within the document's metadata—all while the visible text remains unchanged.
🎵 Audio Steganography: Your secret message is embedded directly into the audio stream. This is done by modifying binary data in a way that mimics subtle background noise or occupies frequencies that are inaudible to humans, preserving the original sound quality.
🗜️ Compression Tool: Before hiding any file—be it an image, video, document, or audio—you can use this tool to compress it. This reduces the file size of your secret message, making the steganography process more efficient and less likely to be detected, as a smaller payload creates fewer changes in the carrier file.