Abstract:
Steganography is a security technique to hide a secret or classified information e.g text messages in digital format. There are a variety of carrier file types available, but digital photos are the most used due to their prevalence on the Internet.
There are several different steganography techniques for hiding hidden information in photographs, some of which are more difficult than others and all of which have their own strengths and weaknesses. The steganography technology utilized for different purposes has varied needs.
Some applications, for example, may necessitate complete invisibility of the secret information, while others may necessitate the concealment of a bigger secret message. The message is hidden within the picture in this project. Instead of LSB replacement from the image, the project allows the user to specify the bits to be replaced for a more secure method.
The first recorded use of the term was in 1499 by Johannes Trithemius in his Steganographia, a treatise on cryptography and steganography, disguised as a book on magic. Generally, the hidden messages appear to be (or to be part of) something else: images, articles, shopping lists, or some other cover text. For example, the hidden message may be in invisible ink between the visible lines of a private letter. Some implementations of steganography that lack a shared secret are forms of security through obscurity, and key-dependent steganographic schemes adhere to Kerckhoffs's principle.
