how to return those values using structure or by declaring class

The code is working fine. I need to return those three variables i.e. {Pa,c1,c2} from that program to another main program. What should i have to do. I have used structure for that but its not working. Please tell how to return a three user defined data type to the main function

hi everyone.. I have written a program where I want to return three user defined data types to the another main() function (here i have not mentioned that main). I want to return {Pa,c1,c2} from this program. Please help me out.

#include <cstdlib>
#include <iostream>
#include <vector>
using std:: cout;
using std:: cin;
using std:: endl;
using namespace std;
#include <math.h>
#include "FiniteFieldElement.hpp"

namespace Cryptography
{
template<int P>
class EllipticCurve
{
public:

       typedef FiniteFieldElement<P> ffe\_t;
             
            class   Point
            {
                friend  class   EllipticCurve<P>;
                typedef FiniteFieldElement<P> ffe\_t;
                ffe\_t  x\_;
                ffe\_t  y\_;
                EllipticCurve    \*ec\_;
                
                void   addDouble(int m, Point& acc)
                {        
                    if ( m > 0 )
                    {       
                        Point r = acc; 
                        for ( int n=0; n < m; ++n )
                        {
                            r += r;     // doubling step                          
                        }
                        acc = r;
                    }        
                }
                
                Point scalarMultiply(int k, const Point& a)
                {
                    Point acc = a;
                    Point res = Point(0,0,\*ec\_);
                    int i = 0, j = 0;
                    int b = k;
                    
                    while( b )
                    {
                        if ( b & 1 )
                        {
                            addDouble(i-j,acc);
                            res += acc;           
                            j = i;  
                        }
                        b >>= 1;
                        ++i;
                    }
                    return res;
                }
                
                void    add(ffe\_t x1, ffe\_t y1, ffe\_t x2, ffe\_t y2, ffe\_t & xR, ffe\_t & yR) const
                {
                                          
                    if ( x1 == 0 && y1 ==

hi everyone.. I have written a program where I want to return three user defined data types to the another main() function (here i have not mentioned that main). I want to return {Pa,c1,c2} from this program. Please help me out.

#include <cstdlib>
#include <iostream>
#include <vector>
using std:: cout;
using std:: cin;
using std:: endl;
using namespace std;
#include <math.h>
#include "FiniteFieldElement.hpp"

namespace Cryptography
{
template<int P>
class EllipticCurve
{
public:

            typedef FiniteFieldElement<P> ffe\_t;
             
            class   Point
            {
                friend  class   EllipticCurve<P>;
                typedef FiniteFieldElement<P> ffe\_t;
                ffe\_t  x\_;
                ffe\_t  y\_;
                EllipticCurve    \*ec\_;
                
                void   addDouble(int m, Point& acc)
                {        
                    if ( m > 0 )
                    {       
                        Point r = acc; 
                        for ( int n=0; n < m; ++n )
                        {
                            r += r;     // doubling step                          
                        }
                        acc = r;
                    }        
                }
                
                Point scalarMultiply(int k, const Point& a)
                {
                    Point acc = a;
                    Point res = Point(0,0,\*ec\_);
                    int i = 0, j = 0;
                    int b = k;
                    
                    while( b )
                    {
                        if ( b & 1 )
                        {
                            addDouble(i-j,acc);
                            res += acc;           
                            j = i;  
                        }
                        b >>= 1;
                        ++i;
                    }
                    return res;
                }
                
                void    add(ffe\_t x1, ffe\_t y1, ffe\_t x2, ffe\_t y2, ffe\_t & xR, ffe\_t & yR) const
                {
                                          
                    if ( x1 == 0 && y

If I delete template parameter, then it is giving so many errors. I will post the full program to you please fix it. I want to return {Pa,c1,c2} from this program to another main() function. Please help me out.

#include <cstdlib>
#include <iostream>
#include <vector>
using std:: cout;
using std:: cin;
using std:: endl;
using namespace std;
#include <math.h>
#include "FiniteFieldElement.hpp"

namespace Cryptography
{
template<int P>
class EllipticCurve
{
public:

            typedef FiniteFieldElement<P> ffe\_t;
             
            class   Point
            {
                friend  class   EllipticCurve<P>;
                typedef FiniteFieldElement<P> ffe\_t;
                ffe\_t  x\_;
                ffe\_t  y\_;
                EllipticCurve    \*ec\_;
                
                void   addDouble(int m, Point& acc)
                {        
                    if ( m > 0 )
                    {       
                        Point r = acc; 
                        for ( int n=0; n < m; ++n )
                        {
                            r += r;     // doubling step                          
                        }
                        acc = r;
                    }        
                }
                
                Point scalarMultiply(int k, const Point& a)
                {
                    Point acc = a;
                    Point res = Point(0,0,\*ec\_);
                    int i = 0, j = 0;
                    int b = k;
                    
                    while( b )
                    {
                        if ( b & 1 )
                        {
                            addDouble(i-j,acc);
                            res += acc;           
                            j = i;  
                        }
                        b >>= 1;
                        ++i;
                    }
                    return res;
                }
                
                void    add(ffe\_t x1, ffe\_t y1, ffe\_t x2, ffe\_t y2, ffe\_t & xR, ffe\_t & yR) const
                {
                                          
                    if ( x1 == 0 && y1 == 0

These are the errors i am getting for the program Manoj1.cc:25:17: error: template class without a name Manoj1.cc:25:9: error: template declaration of ‘typedef’ Manoj1.cc:39:44: error: ‘P’ was not declared in this scope Manoj1.cc:39:45: error: template argument 1 is invalid Manoj1.cc:47:37: error: ‘EllipticCurve’ is not a template Manoj1.cc:47:51: error: ‘P’ was not declared in this scope Manoj1.cc:49:48: error: ‘P’ was not declared in this scope Manoj1.cc:49:49: error: template argument 1 is invalid Manoj1.cc:231:41: error: ‘Cryptography::EllipticCurve’ is not a template Manoj1.cc:231:55: error: ‘P’ was not declared in this scope Manoj1.cc:243:59: error: ‘Cryptography::EllipticCurve’ is not a template Manoj1.cc:243:73: error: ‘P’ was not declared in this scope Manoj1.cc:418:25: error: ‘Cryptography::EllipticCurve’ is not a template Manoj1.cc:418:39: error: ‘P’ was not declared in this scope Manoj1.cc:420:31: error: ‘EllipticCurve’ is not a template Manoj1.cc:420:45: error: ‘P’ was not declared in this scope Manoj1.cc:521:36: error: ‘P’ was not declared in this scope Manoj1.cc:521:37: error: template argument 1 is invalid Manoj1.cc:525:36: error: ‘P’ was not declared in this scope Manoj1.cc:525:37: error: template argument 1 is invalid Manoj1.cc:533:64: error: ‘Cryptography::EllipticCurve’ is not a template Manoj1.cc:549:40: error: ‘P’ was not declared in this scope Manoj1.cc:549:41: error: template argument 1 is invalid Manoj1.cc:551:40: error: ‘P’ was not declared in this scope Manoj1.cc:551:41: error: template argument 1 is invalid Manoj1.cc: In member function ‘Cryptography::EllipticCurve::Point Cryptography::EllipticCurve::Point::scalarMultiply(int, const Cryptography::EllipticCurve::Point&)’: Manoj1.cc:90:51: error: call of overloaded ‘Point(int, int, Cryptography::EllipticCurve&)’ is ambiguous Manoj1.cc:90:51: note: candidates are: Manoj1.cc:243:21: note: Cryptography::EllipticCurve::Point::Point(const ffe_t&, const ffe_t&, Cryptography::EllipticCurve&) Manoj1.cc:231:21: note: Cryptography::EllipticCurve::Point::Point(int, int, Cryptography::EllipticCurve&) Manoj1.cc: In member function ‘void Cryptography::EllipticCurve::Point::add(Cryptography::EllipticCurve::Point::ffe_t, Cryptography::EllipticCurve::Point::ffe_t, Cryptography::EllipticCurve::Point::ffe_t, Cryptography::EllipticCurve::Point::ffe_t, Cryptography::EllipticCurve::Point::ffe_t&, Cryptography::EllipticCurve::Point::ffe_t&) const’: Manoj1.cc:179:40: error: request for member ‘i’ in ‘x1’, which is of non-class t

Templates and namespaces are very important for my program. I have not posted the full code there...

Hi everyone.. I have written the code for encryption algorithm. It has one user function header file also. Sample code is as shown below... I want return {Pa,C1,C2} in the program to main function. Please help me..

#include

#include

#include

using namespace std;

#include

#include "FiniteFieldElement.hpp"

namespace Cryptography

{
template

typedef struct {
Cryptography::EllipticCurve

::Point Pa;
Cryptography::FiniteFieldElement

c1;
Cryptography::FiniteFieldElement

c2;
} encrypt_data_t;

    class   EllipticCurve

    {

        public:
           
            typedef FiniteFieldElement

ffe_t;

            class   Point

            {

                friend  class   EllipticCurve

;

                typedef FiniteFieldElement

ffe_t;

                ffe\_t  x\_;

                ffe\_t  y\_;

                EllipticCurve    \*ec\_;

                }

               
 		.....
	.....
	....
	...

            };
           

            typedef EllipticCurve

this_t;

            typedef class EllipticCurve

::Point point_t;

namespace utils

{

}

using namespace Cryptography;

using namespace utils;

template
encrypt_data_t

my_encrypt()

{

typedef EllipticCurve<263> ec\_t;

ec\_t   myEllipticCurve(1,1);

// Alice

ec\_t::Point Pa = a\*G;  // public key


// encrypt using Bob\`s key

ec\_t::Point Pk = a\*Pb;

ec\_t::ffe\_t c1( m1\*Pk.x() );

ec\_t::ffe\_t c2( m2\*Pk.y() );

cout << "Encrypted message from Alice to Bob = {Pa,c1,c2} = {" << Pa << ", " << c1 << ", " << c2 << "}\\n\\n";

 encrypt\_data\_t <263> ret;
 ret.Pa = Pa;
 ret.c1 = c1;
 ret.c2 = c2;

 return ret;  

}

main()
{
int result;
template
result = encrypt_data_t

my_encrypt();
}

"I want to return {Pa,C1,C2} to the main program using structures... I am getting so many errors" "Please help me with this problem"

Hi.. i have used the structure to pass three different variable as shown below... int main() { struct result t1; t1 = my_encrypt(); cout << t1.pa << t1.c1 << t1.c2 <<; } struct result my_encrypt() { typedef EllipticCurve<263> ec_t; struct result { ec_t::Point Pa; ec_t::ffe_t c1; ec_t::ffe_t c2; }t; ec_t::Point Pk = a*Pb; ec_t::ffe_t t.c1( m1*Pk.x() ); ec_t::ffe_t t.c2( m2*Pk.y() ); return (t); } I am getting so many errors.. Please tell me anything wrong declaration here. Can i declare that structure as global...

Here is my some part of my code....

int my_encrypt()

{

typedef EllipticCurve<263> ec\_t;

ec\_t   myEllipticCurve(1,1);

ec_t::Point P = myEllipticCurve[2]; cout << "some point P = " << P << ", 2P = " << (P+P) << "\n"; int a = irand(1,myEllipticCurve.Degree()-1); ec_t::Point Pa = a*G; // public key cout << "Alice' public key Pa = " << a << "*" << G << " = " << Pa << endl;**

ec_t::Point Pk = a*Pb;

ec\_t::ffe\_t c1( m1\*Pk.x() );

ec\_t::ffe\_t c2( m2\*Pk.y() );

I need to return these three values (Pa, C1, C2) into my main function.**

Hi, I have written a code in C++ which works on the "POINT" user defined type i.e. POINT = (x,y). I am giving input in int form, it is converting it into point might be using "template". I am retrieving these point from another function which is a header file of mine. Now the problem is, I am calling this function in NS-3 software/program, I am unable to convert this point form into integer. * Can i return more than one value from a function, because point has two values i.e. X and Y. Please help me out.

I think it is not the problem with the code, because i am getting the output with g++ compiler. Now i am using ./waf compiler for NS-3, where i am facing problem. I am not sure ostream is supported by NS-3 because there they use NS_LOG_UNCOND("message") instead of "cout". I am getting errors where i have used ostream. What do you mean by "ostream" and is it compiler dependent.

In the main program i am calling another header function called "FiniteFieldElement.h" function. In that function i have used --

// ostream handler
template<int T>
friend ostream& operator<<(ostream& os, const FiniteFieldElement<T>& g)
{
return os << g.i_;
}

I am calling this function and using "ostream" in so many places in main function. I am getting the errors like.. /usr/include/c++/4.6/ostream:493:5: note: template std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const _CharT*) /usr/include/c++/4.6/ostream:473:5: note: template std::basic_ostream& std::operator<<(std::basic_ostream&, unsigned char) /usr/include/c++/4.6/ostream:468:5: note: template std::basic_ostream& std::operator<<(std::basic_ostream&, signed char) /usr/include/c++/4.6/ostream:462:5: note: template std::basic_ostream& std::operator<<(std::basic_ostream&, char) /usr/include/c++/4.6/ostream:456:5: note: template std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, char) /usr/include/c++/4.6/ostream:451:5: note: template std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, _CharT)

Hi.. I have implemented ECC algorithm in C++ and it is working fine with g++ compiler... I need to apply this program to network simulator - 3. Complier of NS-3 is "./waf", there it is not building and it is giving countless errors mainly regarding "ostream". there is a line regarding ostream in my header function....---

// ostream handler
template<int T>
friend ostream& operator<<(ostream& os, const FiniteFieldElement<T>& g)
{
return os << g.i_;
}

I cannot use shifting operator because it will give numbers other than 1/0. If I shift it once i will get 2. I dont want that. I need only binary (1/0).

hi guys.. I have written the below code in C. I have 3 bits in three different integer variables. How can I concatenate those values assuring that i need only binary values (1/0).

#include <stdio.h>
#include "manojturbo5.h"
#include "bitsconv.h"
#include "manojencoder2.h"

void main()
{
int message,interleaver,u,p,q,r,final,result,i;

printf("Enter the message\n");
scanf("%d",&message);

bitconv (message);
for(r=0;r<32;r++)
{
u = array[31-r];
p = encoder(array[31-r]);
q = encoder2(array[31-r]);

printf("%d\t %d\t %d\n",u,p,q);
}
return;
}

What i need is, i need to realize D-Flipflop(Digital block), which transfer the input to output when the clock is high. Clock should be of 50% duty cycle, means equal amounts of ON and OF periods. How can i do this in C/C++.

I don't need a timing info from the system. It should provide the the system clock as a input to my program. How to clock in C++/C for the function of digital blocks.

Hi, I have implement a D-Flipflop in C++, I.e. 'D' as a input and 'Q' as a output with 'clk' as a conrol input. When clk = '1' and D = '1/0' then Q = D; How to realize clock in C++. It should be of 50% duty cycle using the system frequency. is there any function to use the system clock in program.

Can you please suggest me a program to convert a string into binary, that store in char data type.