[monocasa]

If there's a difference visible, that's a weakness in the encryption algorithm.

Encrypted data should be statistically indistinct from random noise.

It's an information theory thing. Everything in the ciphertext should be sitting at maximum entropy.

[monster_truck]

Try it for yourself brother, there is a plainly obvious difference between the random noise of writing garbage compared to a properly encrypted binary.

There are even statistically measurable differences in the garbage written across versions of a tool or OS, which, unlike the invented scenario above, has been successfully used to place a time window on when exactly someone destroyed evidence.

[monocasa]

I'm a security researcher.

"Garbage" isn't the same thing as random noise.

I have looked at the entropy graphs of encrypted data commonly. It's one of the first things I look at when looking at a new firmware image I haven't seen before.