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Once the recepient receives the stegotext, the ciphertext is extracted from it by reversing the logic that was used to embed it in the first place. If a third party snoops the stegotext in between, then they will just see some harmless looking picture (or sound, etc). The generated stegotext is sent over to the intended recepient.

The normal procedure is to first encrypt the plaintext to generate the ciphertext, and then modify the covertext in some way to contain the ciphertext.

stegotext: The data generated after embedding the plaintext/ciphertext into the covertext.

covertext: A larger and harmless looking data which is used as container for the plaintext/ciphertext.

Encrypted message is known as ciphertext.

ciphertext: Secret message is often first encrypted using traditional methods.

plaintext: The original secret message that needs to be communicated.

Steganographic message often appears to be something else than the original (secret) message, like a picture, sound, larger text, etc. Steganography tries to conceal the fact that there is a message in the first place.

This is one notch above regular cryptography which just obscures the original message. Steganography is the science of hiding secret message inside another larger and harmless looking message. It can be used to detect unauthorized file copying. Watermarking (beta): Watermarking files (e.g.Data Hiding: It can hide any data within a cover file (e.g.OpenStego provides two main functionalities: