Fix Mastodon signature bug.

diff --git a/lib/pleroma/web/websub/websub.ex b/lib/pleroma/web/websub/websub.ex
index e32fc881782458b0d25fbad5aaa384ed533607c0..0d0d19c889cd4e1ba66106a2463f3eb37c07c4d5 100644 (file)
--- a/lib/pleroma/web/websub/websub.ex
+++ b/lib/pleroma/web/websub/websub.ex
@@ -52,7 +52,7 @@ defmodule Pleroma.Web.Websub do
   end
 
   def sign(secret, doc) do
-    :crypto.hmac(:sha, secret, to_string(doc)) |> Base.encode16
+    :crypto.hmac(:sha, secret, to_string(doc)) |> Base.encode16 |> String.downcase
   end
 
   def incoming_subscription_request(user, %{"hub.mode" => "subscribe"} = params) do