diff --git a/ndn-cpp/sha256-with-rsa-signature.hpp b/ndn-cpp/sha256-with-rsa-signature.hpp
index 24fa69f..5bb3951 100644
--- a/ndn-cpp/sha256-with-rsa-signature.hpp
+++ b/ndn-cpp/sha256-with-rsa-signature.hpp
@@ -8,6 +8,7 @@
 #define	NDN_SHA256_WITH_RSA_SIGNATURE_HPP
 
 #include "data.hpp"
+#include "key.hpp"
 #include "publisher-public-key-digest.hpp"
 
 namespace ndn {
@@ -87,6 +88,17 @@
     signature_ = Blob(signature, signatureLength); 
   }
 
+  /**
+   * Set signature to point to an existing byte array.  IMPORTANT: After calling this,
+   * if you keep a pointer to the array then you must treat the array as immutable and promise not to change it.
+   * @param signature A pointer to a vector with the byte array.  This takes another reference and does not copy the bytes.
+   */
+  void 
+  setSignature(const ptr_lib::shared_ptr<std::vector<unsigned char> > &signature) { signature_ = signature; }
+
+  void 
+  setSignature(const ptr_lib::shared_ptr<const std::vector<unsigned char> > &signature) { signature_ = signature; }
+
   void 
   setPublisherPublicKeyDigest(const PublisherPublicKeyDigest& publisherPublicKeyDigest) { publisherPublicKeyDigest_ = publisherPublicKeyDigest; }