Situatie
What is Steghide?
Steghide is a command-line tool used for steganography, which is the practice of hiding secret data inside files like images or audio files. It allows you to embed and extract hidden information from JPEG, BMP, WAV, and AU files while keeping the original file looking unchanged.
Key Features of Steghide
Hides data inside images and audio files without visibly altering them
Uses encryption (AES-128 by default) to protect the hidden data
Compresses data before embedding to save space
Preserves the original file format and properties, making detection harder.
Solutie
Steps:
1) Install Steghide (if not installed):
sudo apt install steghide -y
2) Prepare Your Secret Message:
echo “This is a super secret hidden message” > secret.txt
3) Hide the Message in an Image:
steghide embed -cf image.jpg -ef secret.txt
-cf image.jpg → Cover file (the image to hide data in).
-ef secret.txt → Embedded file (the secret message or data).
It will ask for a passphrase—set a strong one.
The file image.jpg will now secretly contain the text file.
4)Check if an image contains hidden data: steghide info image.jpg.
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