What font is this? What does this say?

It's a code (obviously) but it's been altered from the standard discypher. According to the code's normal translation it reads

spdwejkackisp

And either that is another code (which is unlikely due to the lack of nouns) or it's gibberish.

I'm afraid I cannot help you with the font itself but you can learn more about the code here

http://www.exploratorium.edu/ronh/secret/secret.html