Maybe this kind of thing works in the US but this is France and the law doesn't really stop at these technicalities, serving child porn as "encrypted blobs" certainly doesn't exonerate you of anything.
In fact, as a host (as opposed to an actual producer of illegal content) taking such steps to evade law would probably be rather counterproductive, compared to simply cooperating with law enforcement, since it would be difficult to claim acting in good faith.
It is difficult to say you host whatever files your customer gives you? The only people who want to store data on the internet must be using it for illicit activities?
There is nothing "difficult" and as I said, I wasn't accused of anything myself. But if you are a host, you must answer law enforcement when you are informed of illegal content.
And that's if you are content with simply hosting child porn until the police tells you you are.
In fact, as a host (as opposed to an actual producer of illegal content) taking such steps to evade law would probably be rather counterproductive, compared to simply cooperating with law enforcement, since it would be difficult to claim acting in good faith.