Ring middleware that checks POST requests have a valid HMAC of the HTTP POST body in the header.
(server/add-middleware wrap-hmac-check {:algorithm "HmacSHA512" :header-field "AUTH-HMAC"
:secret-key "FIXME put key here"})
Copyright (C) 2011 Dave Barker
Code distributed under the Eclipse Public License, the same as Clojure.