I think legally its still simple, the base64 encoding is still illegal content. Just because it's not easily recognizable as so doesn't change what it is. As l

I think legally its still simple, the base64 encoding is still illegal content. Just because it's not easily recognizable as so doesn't change what it is. As long as it's easy enough for law enforcement to prove the string when decoded is illegal content, then the act of sending the string is the crime. Law enforcement being in possession of it would just be evidence like usual.