Image Steganographer

This application demonstrates Steganography, a technique that embeds secret content—such as files, messages, images, or videos—within other digital media. Unlike cryptography, which solely protects message content, steganography masks both the presence and substance of confidential communication. The key advantage of steganography is its ability to keep hidden information inconspicuous; even highly secure encrypted messages can draw unwanted attention, whereas steganographic communications can remain unnoticed.

📝 Embed the message in an image

We get the following inputs from the user: an image, a keyword, and a message
The message is encrypted using the keyword with the Vigenère cipher
The encrypted text is converted to an array of numbers using ASCII
The alpha channel data in the image is modified to represent the array of numbers and a unique end token

📝 Extract the message from an image

We get the following inputs from the user: an image and a keyword
The alpha channel content of the image is parsed until a unique end token is reached to obtain an array of numbers
The array of numbers is converted to encrypted text using ASCII
The extracted text is decrypted using the keyword and then displayed to the user