diff --git a/ndn-cpp/c/encoding/binary-xml-publisher-public-key-digest.c b/ndn-cpp/c/encoding/binary-xml-publisher-public-key-digest.c
new file mode 100644
index 0000000..dfc95d1
--- /dev/null
+++ b/ndn-cpp/c/encoding/binary-xml-publisher-public-key-digest.c
@@ -0,0 +1,54 @@
+/**
+ * @author: Jeff Thompson
+ * Derived from PublisherPublicKeyDigest.js by Meki Cheraoui.
+ * See COPYING for copyright and distribution information.
+ */
+
+#include "binary-xml.h"
+#include "binary-xml-publisher-public-key-digest.h"
+
+ndn_Error ndn_encodeBinaryXmlPublisherPublicKeyDigest
+  (struct ndn_PublisherPublicKeyDigest *publisherPublicKeyDigest, struct ndn_BinaryXmlEncoder *encoder)
+{  
+  if (!publisherPublicKeyDigest->publisherPublicKeyDigest || publisherPublicKeyDigest->publisherPublicKeyDigestLength == 0)
+    return 0;
+  
+  ndn_Error error;
+  if (error = ndn_BinaryXmlEncoder_writeBlobDTagElement
+      (encoder, ndn_BinaryXml_DTag_PublisherPublicKeyDigest, publisherPublicKeyDigest->publisherPublicKeyDigest, 
+       publisherPublicKeyDigest->publisherPublicKeyDigestLength))
+    return error;
+  
+  return 0;
+}
+
+ndn_Error ndn_decodeBinaryXmlPublisherPublicKeyDigest
+  (struct ndn_PublisherPublicKeyDigest *publisherPublicKeyDigest, struct ndn_BinaryXmlDecoder *decoder)
+{
+  ndn_Error error; 
+  if (error = ndn_BinaryXmlDecoder_readBinaryDTagElement
+      (decoder, ndn_BinaryXml_DTag_PublisherPublicKeyDigest, 0, &publisherPublicKeyDigest->publisherPublicKeyDigest,
+       &publisherPublicKeyDigest->publisherPublicKeyDigestLength))
+    return error;
+  
+  return 0;
+}
+
+ndn_Error ndn_decodeOptionalBinaryXmlPublisherPublicKeyDigest
+  (struct ndn_PublisherPublicKeyDigest *publisherPublicKeyDigest, struct ndn_BinaryXmlDecoder *decoder)
+{
+  int gotExpectedTag;
+  ndn_Error error; 
+  if (error = ndn_BinaryXmlDecoder_peekDTag(decoder, ndn_BinaryXml_DTag_PublisherPublicKeyDigest, &gotExpectedTag))
+    return error;
+  if (gotExpectedTag) {
+    if (error = ndn_decodeBinaryXmlPublisherPublicKeyDigest(publisherPublicKeyDigest, decoder))
+      return error;
+  }
+  else {
+    publisherPublicKeyDigest->publisherPublicKeyDigest = 0;
+    publisherPublicKeyDigest->publisherPublicKeyDigestLength = 0;
+  }
+  
+  return 0;
+}