Testing diffie-hellman https://www.youtube.com/watch?v=Yjrfm_oRO0w

diffie-hellman.js

// Code describing how Diffie-Hellman key exchange works. Suprisingly simple to understand.
// This does not work because Javascript can't deal with large numbers.

let g = 5;
let n = 37;


let pvtA = 5;
let pvtB = 8;

checkDiffieHellman(pvtA,pvtB,g,n);

function checkDiffieHellman (a,b,g,n){
  var pubA = Math.pow(g,a)%n;
  var pubB = Math.pow(g,b)%n;
  
  var secretA = Math.pow(pubA,b)%n;
  var secretB = Math.pow(pubB,a)%n;
  
  console.log(secretA,secretB);

  if (secretA === secretB){
    console.log('yep this worked');
  } else {
    console.log('javascript ran into js-infinity',' or 9007199254740991' );
  }
  
}