New formula: reop

reop is a gpg replacement based on djb's NaCl (via libsodium)

Closes Homebrew/homebrew#28995.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Formula/reop.rb

@@ -0,0 +1,39 @@
+require "formula"
+
+class Reop < Formula
+  homepage "http://www.tedunangst.com/flak/post/reop"
+  head "https://github.com/tedu/reop.git"
+  url "https://github.com/tedu/reop/archive/1.0.0.tar.gz"
+  sha256 "8c2bf9a0b66e9a43cbcf3291858a97ccdc62736a378cd98aa3d3fc47f5db3798"
+
+  depends_on "libsodium"
+
+  def install
+    system "make", "-f", "Makefile.osx"
+    bin.install "reop"
+  end
+
+  test do
+    (testpath/"pubkey").write <<-EOS.undent
+      -----BEGIN REOP PUBLIC KEY-----
+      ident:root
+      RWRDUxZNDeX4wcynGeCr9Bro6Ic7s1iqi1XHYacEaHoy+7jOP+ZE0yxR+2sfaph2MW15e8eUZvvI
+      +lxZaqFZR6Kc4uVJnvirIK97IQ==
+      -----END REOP PUBLIC KEY-----
+    EOS
+
+    (testpath/"msg").write <<-EOS.undent
+      testing one two three four
+    EOS
+
+    (testpath/"sig").write <<-EOS.undent
+      -----BEGIN REOP SIGNATURE-----
+      ident:root
+      RWQWTQ3l+MHMpx8RO/+BX/xxHn0PiSneiJ1Au2GurAmx4L942nZFBRDOVw2xLzvp/RggTVTZ46k+
+      GLVjoS6fSuLneCfaoRlYHgk=
+      -----END REOP SIGNATURE-----
+    EOS
+
+    system "#{bin}/reop", "-V", "-x", "sig", "-p", "pubkey", "-m", "msg"
+  end
+end