Ciphertext has the property to appear random. As a matter of fact, randomness is the first test, an encryption algorithm must pass. However, there are various setups, which monitor the incoming/ outgoing traffic and can easily identify Random Bits (ciphetext). Is there any technique/ research paper in literature which can disguise the randomness of ciphertext, making it less susceptible to identification? In other words, can a system be designed to introduced undetectable form of encryption?
Note:- I am fully aware of steganography, but I want to explore the chances of hiding randomness in the domain of Encryption.