Basically, you'd use steganography to hide that you send a message. And that message would be encrypted. You can use almost any standard encryption scheme, as long as you remove headers etc. Any ciphertext of a crypto-system worth its salt will be indistinguishable from random noise without the key.
Basically, you'd use steganography to hide that you send a message. And that message would be encrypted. You can use almost any standard encryption scheme, as long as you remove headers etc. Any ciphertext of a crypto-system worth its salt will be indistinguishable from random noise without the key.