soni5

Practical No : 05
Aim :Write a program to implement the Diffie-Hellman Key Agreement algorithm to generate symmetric keys.

Input :

using System;
usingSystem.Collections.Generic;
usingSystem.Linq;
usingSystem.Text;
namespaceD_H_Algorithm
{
class Program
    {
static void Main(string[] args)
        {
int m1 = 1, m2 = 1, x, y, g, n;
Console.Write("Enter G:");
            g = Convert.ToInt32(Console.ReadLine());
Console.Write("Enter N:");
            n = Convert.ToInt32(Console.ReadLine());
Console.Write("Enter x:");
            x = Convert.ToInt32(Console.ReadLine());
Console.Write("Enter Y:");
            y = Convert.ToInt32(Console.ReadLine());
for (inti = 0; i< x; i++)
            {
                m1 = m1 * g;
            }
            m1 = m1 % n;
for (inti = 0; i< y; i++)
            {
                m2 = m2 * g;
            }
            m2 = m2 % n;
Console.WriteLine("m1=\t" + m1 + "\n m2=\t" + m2);


int k1 = 1, k2 = 1, a = m1, b = m2;
            m1 = m2 = 1;
for (inti = 0; i< x; i++)
            {
                m1 = m1 * b;
            }
            k1 = m1 % n;
for (inti = 0; i< y; i++)
            {
                m2 = m2 * a;
            }
            k2 = m2 % n;
Console.WriteLine("k1=\t" + k1 + "\n k2=\t" + k2);
Console.ReadKey();
        }
    }
}