Certified Ethical Hacker Version 11 (CEHv11) Practice Test

Steganography is about hiding information inside another file so the secret isn’t obvious. A tool described as hiding a secret message in a photo and letting you decode it with the same app (possibly with a password) is demonstrating that idea: you embed the data into the image, typically in a way that the image still looks normal, and you can extract the hidden message later using the same software. The optional password adds a layer of protection, so even if someone finds the image, they can’t read the hidden data without the password. In practice, this means the app handles both embedding and extracting (and encryption, if used), which is exactly what your description calls for.