diff --git a/ndn-cpp/fields/signature-sha256-with-rsa.cc b/ndn-cpp/fields/signature-sha256-with-rsa.cc
new file mode 100644
index 0000000..c84ef5a
--- /dev/null
+++ b/ndn-cpp/fields/signature-sha256-with-rsa.cc
@@ -0,0 +1,30 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2013, Regents of the University of California
+ *                     Alexander Afanasyev
+ *
+ * BSD license, See the LICENSE file for more information
+ *
+ * Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
+ */
+
+#include "signature-sha256-with-rsa.h"
+#include "ndn-cpp/wire/base.h"
+
+namespace ndn {
+namespace signature {
+
+const std::string Sha256WithRsa::s_oid = "2.16.840.1.101.3.4.2.1";
+
+Sha256WithRsa::~Sha256WithRsa ()
+{
+}
+
+void
+Sha256WithRsa::doubleDispatch (std::ostream &os, wire::Base &wire, void *userData) const
+{
+  wire.appendSignature (os, *this, userData);
+}
+
+} // signature
+} // ndn