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Kerberos authentication

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by fyproject 13.  

Kerberos authentication

 

 

#include <stdio.h>

#include <time.h>

#include <conio.h>

#include <iostream.h>

#include <dos.h>

#include <stdlib.h>

 

void main ()

{     clrscr();

            int ka,kb,ktgs,ks,a=66,b=67,kab;

            char *date,*dt;

            time_t timer;

            timer=time(NULL);

 

            cout<<"A identity=66\n\n";

            cout<<"A send identity to AS\n\n";

            delay(500);

            ks=random(10)+1;

            cout<<"ks by AS=>"<<ks<<"\n\n";

            ktgs=a+ks;

            cout<<"Ticket="<<ktgs<<"\n\n";

            ka=random(10)+1;

            cout<<"message send to A "<<ka+ks+ktgs<<"\n\n";

            cout<<"A authnticated \n\n";

            date = asctime(localtime(&timer));

            dt=date;

            cout<<"A send ticket to TGS on "<<date<<" and 66 as B's identity\n\n";

            delay(5000);

            date = asctime(localtime(&timer));

            cout<<"msg got by TGS on "<<date<<"\n\n";

            cout<<"TGS verifies\n\n";

            delay(1000);

            kab=random(10)+1;

            kb=random(10)+1;

            cout<<"TGS send "<<ks+b+kab<<" and "<<kb+a+kab<<"\n\n";

            cout<<"A send "<<kb+a+kab<<" to B"<<" and "<<"time "<<dt<<" with kab\n\n";

            cout<<"B verifies\n\n";

            delay(2000);

            cout<<"A authnticatd\n\n";

            cout<<"B send encrypted "<<dt<<" to A , encrypted with kab\n\n";

            cout<<"A verifies\n\n";

            delay(2000);

            cout<<"B autnticated\n\n";

            getch();

 

}

 

 

OUTPUT:

 

A identity=66

 

A send identity to AS

 

ks by AS=>1

 

Ticket=67

 

message send to A 69

 

A authnticated

 

A send ticket to TGS on Fri Oct 15 09:32:28 2010

 and 66 as B's identity

 

msg got by TGS on Fri Oct 15 09:32:28 2010

 

 

TGS verifies

 

TGS send 72 and 71

 

A send 71 to B and time Fri Oct 15 09:32:28 2010

 with kab

 

B verifies

 

A authnticatd

 

B send encrypted Fri Oct 15 09:32:28 2010

 to A , encrypted with kab

 

A verifies

 

B autnticated

 


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