Final answer:
Steganography involves concealing information within a cover object, such as text or an image, using a stego-medium and a stego-key to encode and decode the message.
Step-by-step explanation:
Steganography is the practice of concealing messages or information within other non-secret text or data. There are several key terms essential to understanding steganography, including:
- Cover - The file, message, image, or video that hides the hidden information.
- Stego-medium - The medium in which the secret message is embedded.
- Stego-key - A password or secret key required to encode or decode the hidden message.
An example of steganography is embedding a secret text message into an image file in such a way that it's undetectable to the observer. Only someone with the appropriate stego-key can extract and read the message.