It seems all encryption is not theoretically guaranteed to appear random, but practically speaking it’s nearly impossible to do. For example, there’s no known

It seems all encryption is not theoretically guaranteed to appear random, but practically speaking it’s nearly impossible to do. For example, there’s no known way to do this against AES, which is used prominently in HTTPS. I still feel like I must be missing something, because this fact would be obvious to SETI researchers… https://crypto.stackexchange.com/questions/1646/is-it-possible-to-distinguish-a-securely-encrypted-ciphertext-from-random-noise https://crypto.stackexchange.com/questions/1646/is-it-possib...