c++ programming and ns2

hi;
i wrote a c++ code rsa.cpp and rsa.h in order to make a new agent in ns2 called and my project consist that all packet in the traffic are crypted with rsa and this is my code :

Code:

/* C program for the Implementation Of RSA Algorithm */

#include <stdio.h>
#include <ncurses.h>
#include <stdlib.h>
#include <math.h>
#include <packet.h>
#include <agent.h>
#include <tclcl.h>
#include "rsa.h"

using namespace std;

int TCL_OK,phi,M,n,e,d,C,FLAG,i,p,q,s;

static class rsaClass:public TclClass{
 public:
         rsaClass(): TclClass("Agent/rsa"){

         }
         TclObject* create(int argc,const char*const argv)
         {

         return (new rsa());

          }
}Class_rsa;



rsa::rsa(): Agent(PT_RSA)
/*binding the tcl variable - c++ vraiable*/
{

  bind("phi_otcl",&phi);
  bind("M_otcl",&M);
  bind("C_otcl",&C);
  bind("n_otcl",&n);
  bind("e_otcl",&e);
  bind("d_otcl",&d);
  bind("FLAG_otcl",&FLAG);
  bind("i_otcl",&i);
  bind("p_otcl",&p);
  bind("q_otcl",q);
  bind("s_otcl",s);

 };


//le code rsa en c++//
int
rsa::check()
{
	int i;
	for(i=3;e%i==0 && phi%i==0;i+2)
	{
	FLAG = 1;
	return 0;
	}
	FLAG = 0;
}
void
rsa::encrypt()
{
	int i;
	C = 1;
	for(i=0;i< e;i++)
	C=C*M%n;
	C = C%n;
	printf("\n\tEncrypted keyword : %d",C);
}
void
rsa::decrypt()
{
	int i;
	M = 1;
	for(i=0;i< d;i++)
	M=M*C%n;
	M = M%n;
	printf("\n\tDecrypted keyword : %d",M);
}
int
rsa::main()
{
	int p,q,s;

	printf("Enter Two Relatively Prime Numbers\t: ");
	scanf("%d%d",&p,&q);
	n = p*q;
	phi=(p-1)*(q-1);
	printf("\n\tF(n)\t= %d",phi);
	do
	{
	printf("\n\nEnter e\t: ");
	scanf("%d",&e);
	check();
	}while(FLAG==1);
	d = 1;
	do
	{
	s = (d*e)%phi;
	d++;
	}while(s!=1);
	d = d-1;
	printf("\n\tPublic Key\t: {%d,%d}",e,n);
	printf("\n\tPrivate Key\t: {%d,%d}",d,n);
	printf("\n\nEnter The Plain Text\t: ");
	scanf("%d",&M);
	encrypt();
}


/*command*/

int
rsa::command(int argc,const char*const*argv)
{
if (argc==2){
if (strcmp(argv[1],"encrypt")==0){
  encrypt();
  return (TCL_OK);};
}
return (Agent::command(argc,argv));
}

and when i try to compile the whole project it say that there is an error in rsa.cpp
and the error is
cannot convert rsa to tclobjet in return????
pleasse i neeed really help .????

Is it that line below?

Code:

static class rsaClass:public TclClass{
 public:
         rsaClass(): TclClass("Agent/rsa"){

         }
         TclObject* create(int argc,const char*const argv)
         {

         return (new rsa());

          }
}Class_rsa;

Is an rsa object built off of a TclObject?

yahh the line "return (new rsa());" it says cannot convert rsa* to tclObject*.
i figured out how the tcp application is implemented and i see that it is like i did for rsa.
so i really cant see where is the problem.
thanks.