diff --git a/ndn-cpp/c/data.h b/ndn-cpp/c/data.h
new file mode 100644
index 0000000..9338846
--- /dev/null
+++ b/ndn-cpp/c/data.h
@@ -0,0 +1,96 @@
+/**
+ * @author: Jeff Thompson
+ * See COPYING for copyright and distribution information.
+ */
+
+#ifndef NDN_DATA_H
+#define	NDN_DATA_H
+
+#include "Name.h"
+#include "PublisherPublicKeyDigest.h"
+#include "Key.h"
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+struct ndn_Signature {
+  unsigned char *digestAlgorithm;      /**< pointer to pre-allocated buffer.  0 for none.
+                                        *   If none, default is 2.16.840.1.101.3.4.2.1 (sha-256). */
+  unsigned int digestAlgorithmLength; /**< length of digestAlgorithm.  0 for none */
+  unsigned char *witness;              /**< pointer to pre-allocated buffer.  0 for none. */
+  unsigned int witnessLength;          /**< length of witness.  0 for none */
+  unsigned char *signature;
+  unsigned int signatureLength;
+};
+
+static inline void ndn_Signature_init(struct ndn_Signature *self) {
+  self->digestAlgorithm = 0;
+  self->digestAlgorithmLength = 0;
+  self->witness = 0;
+  self->witnessLength = 0;
+  self->signature = 0;
+  self->signatureLength = 0;
+}
+
+enum {
+  ndn_ContentType_DATA = 0,
+  ndn_ContentType_ENCR = 1,
+  ndn_ContentType_GONE = 2,
+  ndn_ContentType_KEY =  3,
+  ndn_ContentType_LINK = 4,
+  ndn_ContentType_NACK = 5
+};
+
+struct ndn_SignedInfo {
+  struct ndn_PublisherPublicKeyDigest publisherPublicKeyDigest;
+  double timestampMilliseconds;    /**< milliseconds since 1/1/1970. -1 for none */
+  int type;                        /**< default is ndn_ContentType_DATA. -1 for none */
+  int freshnessSeconds;            /**< -1 for none */
+	unsigned char *finalBlockID;	   /**< pointer to pre-allocated buffer.  0 for none */
+  unsigned int finalBlockIDLength; /**< length of finalBlockID.  0 for none */
+  struct ndn_KeyLocator keyLocator;
+};
+
+/**
+ * Initialize the ndn_SignedInfo struct with values for none and the type to the default ndn_ContentType_DATA.
+ * @param self pointer to the ndn_SignedInfo struct.
+ */
+static inline void ndn_SignedInfo_init(struct ndn_SignedInfo *self) {
+  ndn_PublisherPublicKeyDigest_init(&self->publisherPublicKeyDigest);
+  self->type = ndn_ContentType_DATA;
+  self->freshnessSeconds = -1;
+  self->finalBlockID = 0;
+  self->finalBlockIDLength = 0;
+  ndn_KeyLocator_init(&self->keyLocator);
+}
+
+struct ndn_Data {
+  struct ndn_Signature signature;
+  struct ndn_Name name;
+  struct ndn_SignedInfo signedInfo;
+  unsigned char *content;     /**< pointer to the content */
+  unsigned int contentLength; /**< length of content */
+};
+
+/**
+ * Initialize an ndn_Data struct with the pre-allocated nameComponents,
+ * and defaults for all the values.
+ * @param self pointer to the ndn_Data struct
+ * @param nameComponents the pre-allocated array of ndn_NameComponent
+ * @param maxNameComponents the number of elements in the allocated nameComponents array
+ */
+static inline void ndn_Data_init(struct ndn_Data *self, struct ndn_NameComponent *nameComponents, unsigned int maxNameComponents) 
+{
+  ndn_Signature_init(&self->signature);
+  ndn_Name_init(&self->name, nameComponents, maxNameComponents);
+  ndn_SignedInfo_init(&self->signedInfo);
+  self->content = 0;
+  self->contentLength = 0;
+}
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif