diff --git a/nlsr-sync-0.0/nlsr_npl.c b/nlsr-sync-0.0/nlsr_npl.c
new file mode 100755
index 0000000..a2e2271
--- /dev/null
+++ b/nlsr-sync-0.0/nlsr_npl.c
@@ -0,0 +1,174 @@
+#include<stdio.h>
+#include<string.h>
+#include<stdlib.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <sys/time.h>
+#include <assert.h>
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+
+#include <ccn/ccn.h>
+#include <ccn/uri.h>
+#include <ccn/keystore.h>
+#include <ccn/signing.h>
+#include <ccn/schedule.h>
+#include <ccn/hashtb.h>
+
+#include "nlsr.h"
+#include "nlsr_npl.h"
+#include "utility.h"
+
+
+void 
+add_name_to_npl(struct name_prefix *np)
+{
+	struct name_prefix_list_entry *npe=(struct name_prefix_list_entry *)malloc(sizeof(struct name_prefix_list_entry));
+	//struct name_prefix *hnp=(struct name_prefix *)malloc(sizeof(struct name_prefix )); //free
+
+	struct hashtb_enumerator ee;
+    	struct hashtb_enumerator *e = &ee; 	
+    	int res;
+
+   	hashtb_start(nlsr->npl, e);
+    	res = hashtb_seek(e, np->name, np->length, 0);
+
+	if(res == HT_NEW_ENTRY)
+	{   
+		npe=e->data;
+		npe->np=(struct name_prefix *)malloc(sizeof(struct name_prefix ));
+		npe->np->length=np->length;
+		npe->np->name=(char *)malloc(np->length);
+		memcpy(npe->np->name,np->name,np->length);
+		npe->name_lsa_id=0;
+		//hnp = e->data;
+		//hnp->length=np->length;
+		//hnp->name=(char *)malloc(np->length); //free
+		//memcpy(hnp->name,np->name,np->length);
+	}
+    	
+	hashtb_end(e);
+
+}
+
+int  
+does_name_exist_in_npl(struct name_prefix *np)
+{
+	int ret=0;
+
+	//struct name_prefix_entry *npe;
+
+	struct hashtb_enumerator ee;
+    	struct hashtb_enumerator *e = &ee; 	
+    	int res;
+
+   	hashtb_start(nlsr->npl, e);
+    	res = hashtb_seek(e, np->name, np->length, 0);
+
+	if(res == HT_NEW_ENTRY)
+	{   
+		hashtb_delete(e);
+		ret=0;
+	}
+	else
+	{
+		ret=1;
+    	}
+	hashtb_end(e);
+
+	return ret;
+
+}
+
+
+long int  
+get_lsa_id_from_npl(struct name_prefix *np)
+{
+	int ret=0;
+
+	struct name_prefix_list_entry *npe;
+
+	struct hashtb_enumerator ee;
+    	struct hashtb_enumerator *e = &ee; 	
+    	int res;
+
+   	hashtb_start(nlsr->npl, e);
+    	res = hashtb_seek(e, np->name, np->length, 0);
+
+	if(res == HT_NEW_ENTRY)
+	{   
+		hashtb_delete(e);
+		ret=0;
+	}
+	else
+	{
+		npe=e->data;
+		ret=npe->name_lsa_id;
+    	}
+	hashtb_end(e);
+
+	return ret;
+
+}
+
+void
+print_name_prefix_from_npl(void)
+{
+	if ( nlsr->debugging )
+		printf("print_name_prefix_from_npl called \n");	
+	if ( nlsr->detailed_logging )
+		writeLogg(__FILE__,__FUNCTION__,__LINE__,"print_name_prefix_from_npl called\n");
+	int i, npl_element;
+	//struct name_prefix *np;
+	struct name_prefix_list_entry *npe;
+
+	struct hashtb_enumerator ee;
+    	struct hashtb_enumerator *e = &ee;
+    	
+    	hashtb_start(nlsr->npl, e);
+	npl_element=hashtb_n(nlsr->npl);
+
+	for(i=0;i<npl_element;i++)
+	{
+		npe=e->data;
+		if ( nlsr->debugging )
+			printf("Name Prefix: %s and Length: %d and LSA Id: %ld\n",npe->np->name,npe->np->length,npe->name_lsa_id);
+		if ( nlsr->detailed_logging )
+			writeLogg(__FILE__,__FUNCTION__,__LINE__,"Name Prefix: %s and Length: %d \n",npe->np->name,npe->np->length);	
+		hashtb_next(e);		
+	}
+
+	hashtb_end(e);
+
+	if ( nlsr->debugging )
+		printf("\n");
+	if ( nlsr->detailed_logging )
+		writeLogg(__FILE__,__FUNCTION__,__LINE__,"\n");
+}
+
+void 
+update_nlsa_id_for_name_in_npl(struct name_prefix *np, long int nlsa_id)
+{
+	struct name_prefix_list_entry *npe;
+	struct hashtb_enumerator ee;
+    	struct hashtb_enumerator *e = &ee; 	
+    	int res;
+
+   	hashtb_start(nlsr->npl, e);
+    	res = hashtb_seek(e, np->name, np->length, 0);
+
+	if(res == HT_OLD_ENTRY)
+	{   
+		npe=e->data;
+		npe->name_lsa_id=nlsa_id;
+	}
+	else
+	{
+		hashtb_delete(e);	
+	}
+    	
+	hashtb_end(e);
+}
+