Figure 2 shows a simple representation of the generic
embedding and decoding process in steganography. In
this example, a secret image is being embedded inside a
cover image to produce the stego image. The first step in
embedding and hiding information is to pass both the
secret message and the cover message into the encoder.
Inside the encoder, one or several protocols will be implemented
to embed the secret information into the cover
message. The type of protocol will depend on what information
you are trying to embed and what you are embedding
it in. For example, you will use an image protocol
to embed information inside images.