The pre-shared key is not required, although you don’t really know who you are talking to, so maybe that’s how it’s used. See my response on this: https://news.

The pre-shared key is not required, although you don’t really know who you are talking to, so maybe that’s how it’s used. See my response on this: https://news.ycombinator.com/item?id=27412636 https://news.ycombinator.com/item?id=27412636