Added blob.h
diff --git a/ndn-cpp/c/util/blob.h b/ndn-cpp/c/util/blob.h
new file mode 100644
index 0000000..07ce7d7
--- /dev/null
+++ b/ndn-cpp/c/util/blob.h
@@ -0,0 +1,37 @@
+/**
+ * @author: Jeff Thompson
+ * See COPYING for copyright and distribution information.
+ */
+
+#ifndef NDN_BLOB_H
+#define NDN_BLOB_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * An ndn_Blob holds a pointer to a read-only pre-allocated buffer and its length.
+ */
+struct ndn_Blob {
+ unsigned char *value; /**< pointer to the pre-allocated buffer for the value. Must be treated as read only. */
+ unsigned int valueLength; /**< the number of bytes in value. */
+};
+
+/**
+ * Initialize the ndn_Blob struct with the given value.
+ * @param self pointer to the ndn_Blob struct.
+ * @param value The pre-allocated buffer for the value, or 0 for none.
+ * @param valueLength The number of bytes in value.
+ */
+static inline void ndn_Blob_initialize(struct ndn_Blob *self, unsigned char *value, unsigned int valueLength)
+{
+ self->value = value;
+ self->valueLength = valueLength;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif