What is Steganography?

Hello guys I am Vishal and today I will try to explain to you about the

The word Steganography is derived from two Greek words- ‘

 

We can also say that it refers to hiding data within a message or file. It serves a similar purpose to cryptography, but instead of encrypting data, steganography simply hides it from the user. That means you would able to hide your personal data or another file into a file it could be an Image, a Video, or any other file.

 

Let's take an example of invisible ink that example not related to the computers, but this help you to make understand what is steganography. A person can write a msg with clear or “invisible” ink that can only be seen when another ink or liquid is applied to the paper. Similarly, in digital steganography, the goal is to hide information from users except those who are meant to see or hear it.

 

How is it different from cryptography?

Cryptography and Steganography are both methods used to hide or protect secret data. However, they differ in the respect that cryptography makes the data unreadable, or hides the meaning of the data, while steganography hides the existence of the data.

 

In layman’s terms, cryptography is similar to writing a letter in a secret language: people can read it, but won’t understand what it means. However, the existence of a (probably secret) message would be obvious to anyone who sees the letter, and if someone either knows or figures out your secret language, then your message can easily be read.

 

If you were to use Steganography in the same situation, you would hide the letter inside a pair of socks that you would be gifting the intended recipient of the letter. To those who don’t know about the message, it would look like there was nothing more to your gift than the socks. But the intended recipient knows what to look for, and finds the message hidden in them.

 

Similarly, if two users exchanged media files over the internet, it would be more difficult to determine whether these files contain hidden messages, than if they were communicating using cryptography.

 

Steganography Examples

Since steganography is more of an art than a science, there is no limit to the ways steganography can be used. Below are a few examples:

 

• Playing an audio track backwards to reveal a secret message
• Playing a video at a faster frame rate (FPS) to reveal a hidden image
• Embedding a message in the red, green, or blue channel of an RGB image
• Hiding information within a file header or metadata
• Embedding an image or message within a photo through the addition of digital noise

Some Related Links :

Hide Data into an Image Using CMD.

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