Hide your secret messages in an Image! (Like the Cicada 3301)

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Imagine if you could hide secret messages inside an image. The image doesn't look any different. It looks like any other normal image but it actually has some data hidden inside it. This is called steganography. It is the technique of hiding a secret in an object that is in plain sight, like an innocent image for example. It has been used in many places including Internet mysteries like the Cicada 3301.

Hey, and maybe there is something hidden in the thumbnail of this video too? Who knows: https://bit.ly/3rGhpz6

In this video, I'll show you how to actually do this. And I'll be writing code in Python to implement image steganography. Also, in addition to just encoding data into an image, we're first going to encrypt the data with a key or password. So that when you want to retrieve the data from the image you need to decode it first and then also decrypt it to its plain-text form.

Check out my source code on GitHub: https://github.com/teja156/imghide Instructions on how to use this script are documented in the README file. Make sure to leave a star on the repository :)

We use a simple encoding algorithm to encode a piece of text into the RGB values of an image, and in the same way, decode the text using a decoding algorithm. Watch the video to understand how the algorithm works.

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