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index.js
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index.js
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var zoom = 1;
var logMode=false;
function applyZoom(x) {
if ((x>0) && (zoom<1.4)) {
zoom+=0.1; document.getElementById('enigmaZoom').style.zoom = zoom;
}
if ((x<0) && (zoom>0.5)) {
zoom-=0.1; document.getElementById('enigmaZoom').style.zoom = zoom;
}
}
var sound = true;
var mode = "Encrypt";
//Rotors - https://en.wikipedia.org/wiki/Enigma_rotor_details
var rotor1 = "EKMFLGDQVZNTOWYHXUSPAIBRCJ";
var rotor1Trigger = "Q"; //Notch Position
var rotor2 = "AJDKSIRUXBLHWTMCQGZNPYFVOE";
var rotor2Trigger = "E"; //Notch Position
var rotor3 = "BDFHJLCPRTXVZNYEIWGAKMUSQO";
var rotor3Trigger = "V"; //Notch Position
var rotor4 = "ESOVPZJAYQUIRHXLNFTGKDCMWB";
var rotor4Trigger = "J"; //Notch Position
var rotor5 = "VZBRGITYUPSDNHLXAWMJQOFECK";
var rotor5Trigger = "Z"; //Notch Position
var alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
var rotorANotch=false;
var rotorBNotch=false;
var rotorCNotch=false;
var letterCount = 0;
//(AY) (BR) (CU) (DH) (EQ) (FS) (GL) (IP) (JX) (KN) (MO) (TZ) (VW)
var reflectorB = {"A":"Y","Y":"A","B":"R","R":"B","C":"U","U":"C","D":"H","H":"D","E":"Q","Q":"E","F":"S","S":"F","G":"L","L":"G","I":"P","P":"I","J":"X","X":"J","K":"N","N":"K","M":"O","O":"M","T":"Z","Z":"T","V":"W","W":"V"};
var reflectorC = {"A":"F","F":"A","B":"V","V":"B","C":"P","P":"C","D":"J","J":"D","E":"I","I":"E","G":"O","O":"G","H":"Y","Y":"H","K":"R","R":"K","L":"Z","Z":"L","M":"X","X":"M","N":"W","W":"N","Q":"T","T":"Q","S":"U","U":"S"};
var reflector = reflectorB;
var reflectorName = "UKW-B";
//var reflectorb = "YRUHQSLDPXNGOKMIEBFZCWVJAT" //b M3
//var reflectorc = "FVPJIAOYEDRZXWGCTKUQSBNMHL"; //c M3
var rotorA = rotor1;
var rotorB = rotor2;
var rotorC = rotor3;
var rotorATrigger = rotor1Trigger;
var rotorBTrigger = rotor2Trigger;
var rotorCTrigger = rotor3Trigger;
var colors = {"red":0,"yellow":0,"blue":0,"green":0,"magenta":0,"cyan":0,"orangered":0,"maroon":0,"indigo":0,"olive":0,"sienna":0,"lime":0,"teal":0};
var currentColor = "";
var currentLetter = "";
function getFreeColor() {
for(var key in colors) {
if (colors[key]==0) return key;
}
}
var plugs = {};
plugs["Q"] = "";
plugs["W"] = "";
plugs["E"] = "";
plugs["R"] = "";
plugs["T"] = "";
plugs["Z"] = "";
plugs["U"] = "";
plugs["I"] = "";
plugs["O"] = "";
plugs["A"] = "";
plugs["S"] = "";
plugs["D"] = "";
plugs["F"] = "";
plugs["G"] = "";
plugs["H"] = "";
plugs["J"] = "";
plugs["K"] = "";
plugs["P"] = "";
plugs["Y"] = "";
plugs["X"] = "";
plugs["C"] = "";
plugs["V"] = "";
plugs["B"] = "";
plugs["N"] = "";
plugs["M"] = "";
plugs["L"] = "";
function resetPlug(color) {
var elements = document.getElementsByClassName("plug");
for(var i = 0; i < elements.length; i++) {
if (elements.item(i).style.background==color) {
elements.item(i).style.background ="";
}
}
colors[color]=0;
}
function plug(element) {
letter = element.innerText;
if (sound) {
var plugboardSound = new Audio('./sounds/plugboard.mp3');
plugboardSound.play();
}
if (element.style.background == "") {
if (currentColor=="") {
currentColor = getFreeColor()
element.style.background = currentColor;
currentLetter = letter;
} else {
plugs[letter]=currentLetter;
plugs[currentLetter]=letter;
currentLetter="";
element.style.background = currentColor;
colors[currentColor] = 2;
currentColor = "";
currentLetter = "";
}
} else {
if (element.style.background ==currentColor) {
resetPlug(element.style.background);
currentColor="";
}else{
colors[element.style.background] = 0;
tmp = plugs[letter];
plugs[letter] = "";
if (tmp!="") plugs[tmp]="";
resetPlug(element.style.background);
element.style.background = "";
}
}
}
function showLog() {
if (logMode==true) {
logMode = false;
document.getElementById("log").style.display="none";
} else {
logMode = true;
document.getElementById("log").style.display="block";
}
}
function log(txt) {
if (logMode==true) document.getElementById("log").innerHTML = document.getElementById("log").innerHTML + txt + "<br/>";
}
function clearLog() {
document.getElementById("log").innerHTML = "<H1>Encryption Steps:</H1>";
}
function encryptKey(letter) {
var plaintext = document.getElementById("plaintext");
var ciphertext = document.getElementById("ciphertext");
plaintext.innerHTML = plaintext.innerHTML + letter;
var encryptedLetter = letter;
log("Keyboard Input: " + letter);
//Rotation des Rotors - Ceci arrive dès que la clé est cliquée ,avant l'encryption de la lettre
//Le Troisième Roteur bouge d'une case pour chaque clé insérée
var rotorCLetter = document.getElementById("rotor3Current").innerText;
if (rotorCLetter == rotorCTrigger) rotorCNotch = true;
var previous = alphabet.indexOf(rotorCLetter);
var current = (previous + 1) % 26;
var next = (previous + 2) % 26;
document.getElementById("rotor3Previous").innerText = rotorCLetter;
rotorCLetter = alphabet.charAt(current);
document.getElementById("rotor3Current").innerText = rotorCLetter;
document.getElementById("rotor3Next").innerText = alphabet.charAt(next);
//Vérifier si le RoteurB peut bouger
if (rotorCNotch) {
rotorCNotch=false;
var rotorBLetter = document.getElementById("rotor2Current").innerText;
if (rotorBLetter == rotorBTrigger) rotorBNotch = true;
previous = alphabet.indexOf(rotorBLetter);
current = (previous + 1) % 26;
next = (previous + 2) % 26;
document.getElementById("rotor2Previous").innerText = rotorBLetter;
rotorBLetter = alphabet.charAt(current);
document.getElementById("rotor2Current").innerText = rotorBLetter;
document.getElementById("rotor2Next").innerText = alphabet.charAt(next);
//Vérifier si le RoteurA peut bouger
if (rotorBNotch) {
rotorBNotch=false;
var rotorALetter = document.getElementById("rotor1Current").innerText;
previous = alphabet.indexOf(rotorALetter);
current = (previous + 1) % 26;
next = (previous + 2) % 26;
document.getElementById("rotor1Previous").innerText = rotorALetter;
document.getElementById("rotor1Current").innerText = alphabet.charAt(current);
document.getElementById("rotor1Next").innerText = alphabet.charAt(next);
}
} else {
//Vérifier pour le fait de décaler les deux roteurs en meme temps
rotorBLetter = document.getElementById("rotor2Current").innerText;
if ( rotorBLetter == rotorBTrigger) {
previous = alphabet.indexOf(rotorBLetter);
current = (previous + 1) % 26;
next = (previous + 2) % 26;
document.getElementById("rotor2Previous").innerText = rotorBLetter;
rotorBLetter = alphabet.charAt(current);
document.getElementById("rotor2Current").innerText = rotorBLetter;
document.getElementById("rotor2Next").innerText = alphabet.charAt(next);
var rotorALetter = document.getElementById("rotor1Current").innerText;
previous = alphabet.indexOf(rotorALetter);
current = (previous + 1) % 26;
next = (previous + 2) % 26;
document.getElementById("rotor1Previous").innerText = rotorALetter;
document.getElementById("rotor1Current").innerText = alphabet.charAt(current);
document.getElementById("rotor1Next").innerText = alphabet.charAt(next);
}
}
log("Rotors Position: " + document.getElementById("rotor1Current").innerText + document.getElementById("rotor2Current").innerText + document.getElementById("rotor3Current").innerText);
//Plugboard encryption!
if (plugs[letter]!="") encryptedLetter = plugs[letter];
log("Plugboard Encryption: " + encryptedLetter);
//Roteurs & Reflectur Encryption
var offset3Letter = document.getElementById("rotor3Current").innerText;
var offset3 = alphabet.indexOf(offset3Letter);
var offset2Letter = document.getElementById("rotor2Current").innerText;
var offset2 = alphabet.indexOf(offset2Letter);
var offset1Letter = document.getElementById("rotor1Current").innerText;
var offset1 = alphabet.indexOf(offset1Letter);
letterCount++;
//Roue3
var pos = alphabet.indexOf(encryptedLetter);
var let = rotorC.charAt((pos + offset3)%26);
pos = alphabet.indexOf(let);
encryptedLetter = alphabet.charAt((pos - offset3 +26)%26);
log("Wheel 3 Encryption: " + encryptedLetter);
//Roue2
pos = alphabet.indexOf(encryptedLetter);
let = rotorB.charAt((pos + offset2)%26);
pos = alphabet.indexOf(let);
encryptedLetter = alphabet.charAt((pos - offset2 +26)%26);
log("Wheel 2 Encryption: " + encryptedLetter);
//Roue1
pos = alphabet.indexOf(encryptedLetter);
let = rotorA.charAt((pos + offset1)%26);
pos = alphabet.indexOf(let);
encryptedLetter = alphabet.charAt((pos - offset1 +26)%26);
log("Wheel 1 Encryption: " + encryptedLetter);
//reflecteur
if (encryptedLetter in reflector) encryptedLetter = reflector[encryptedLetter];
log("Reflector Encryption: " + encryptedLetter);
//On fait le chemin inverse
//Roue1
pos = alphabet.indexOf(encryptedLetter);
let = alphabet.charAt((pos + offset1)%26);
pos = rotorA.indexOf(let);
encryptedLetter = alphabet.charAt((pos - offset1 +26)%26);
log("Wheel 1 Encryption: " + encryptedLetter);
//Roue2
pos = alphabet.indexOf(encryptedLetter);
let = alphabet.charAt((pos + offset2)%26);
pos = rotorB.indexOf(let);
encryptedLetter = alphabet.charAt((pos - offset2 +26)%26);
log("Wheel 2 Encryption: " + encryptedLetter);
//Roue3
pos = alphabet.indexOf(encryptedLetter);
let = alphabet.charAt((pos + offset3)%26);
pos = rotorC.indexOf(let);
encryptedLetter = alphabet.charAt((pos - offset3 + 26)%26);
log("Wheel 3 Encryption: " + encryptedLetter);
//plugboard encryption!
if (plugs[encryptedLetter]!="") encryptedLetter = plugs[encryptedLetter];
log("Plugboard Encryption: " + encryptedLetter);
log("Output (Lampboard): " + encryptedLetter);
log("-----------------------------")
ciphertext.innerHTML = ciphertext.innerHTML + encryptedLetter;
if ((letterCount%5)==0) {
ciphertext.innerHTML = ciphertext.innerHTML + " ";
plaintext.innerHTML = plaintext.innerHTML + " ";
}
lightOn(encryptedLetter);
}
function lightOn(letter) {
//Éteindre les lumières du clavier
var elements = document.getElementsByClassName("lightOn");
for (var i = 0; i < elements.length; i++) elements.item(i).className = "light";
document.getElementById("light"+letter).className="lightOn";
setTimeout(function(){ document.getElementById("light"+letter).className="light"; }, 800);
}
function keyOn(letter) {
document.getElementById("key"+letter).className="keyOn";
setTimeout(function(){ document.getElementById("key"+letter).className="key"; }, 500);
}
function pressKey(key) {
var letter = key.innerText;
encryptKey(letter);
}
document.addEventListener("keypress", checkKey);
function checkKey() {
var charCode = event.which || event.keyCode;
var char = String.fromCharCode(charCode);
char = char.toUpperCase();
//Accepte uniquement l'aphabet
if (alphabet.includes(char)) {
encryptKey(char);
keyOn(char);
}
}
function nextRotor(rotor) {
event.stopPropagation();
var rotorLetter = document.getElementById("rotor" +rotor+ "Current").innerText;
var previous = alphabet.indexOf(rotorLetter);
var current = (previous + 1) % 26;
var next = (previous + 2) % 26;
document.getElementById("rotor" +rotor+ "Previous").innerText = rotorLetter;
document.getElementById("rotor" +rotor+ "Current").innerText = alphabet.charAt(current);
document.getElementById("rotor" +rotor+ "Next").innerText = alphabet.charAt(next);
}
function previousRotor(rotor) {
event.stopPropagation();
var rotorLetter = document.getElementById("rotor" +rotor+ "Current").innerText;
var next = alphabet.indexOf(rotorLetter);
var current = (next + 25) % 26;
var previous = (next + 24) % 26;
document.getElementById("rotor" +rotor+ "Previous").innerText = alphabet.charAt(previous);
document.getElementById("rotor" +rotor+ "Current").innerText = alphabet.charAt(current);
document.getElementById("rotor" +rotor+ "Next").innerText = rotorLetter;
}
function displayRotorSettings() {
document.getElementById("rotor1Position").value = document.getElementById("rotor1Current").innerText;
document.getElementById("rotor2Position").value = document.getElementById("rotor2Current").innerText;
document.getElementById("rotor3Position").value = document.getElementById("rotor3Current").innerText;
document.getElementById("rotorSettings").style.display="block";
}
function cancelSettings() {
document.getElementById("rotorSettings").style.display="none";
}
function caesarShift(str, amount) {
var output = '';
for (var i = 0; i < str.length; i ++) {
var c = str[i];
var code = str.charCodeAt(i);
if ((code >= 65) && (code <= 90))
c = String.fromCharCode(((code - 65 + amount) % 26) + 65);
output += c;
}
return output;
}
function applySettings() {
var r = document.getElementById("reflector").value;
if (r=="UKW-B") {
reflector = reflectorB;
} else {
reflector = reflectorC;
}
r = document.getElementById("rotor1Select").value;
switch(r) {
case "I": rotorA=rotor1; rotorATrigger = rotor1Trigger; break;
case "II": rotorA=rotor2; rotorATrigger = rotor2Trigger; break;
case "III": rotorA=rotor3; rotorATrigger = rotor3Trigger; break;
case "IV": rotorA=rotor4; rotorATrigger = rotor4Trigger; break;
case "V": rotorA=rotor5; rotorATrigger = rotor5Trigger; break;
}
r = document.getElementById("rotor2Select").value;
switch(r) {
case "I": rotorB=rotor1; rotorBTrigger = rotor1Trigger; break;
case "II": rotorB=rotor2; rotorBTrigger = rotor2Trigger; break;
case "III": rotorB=rotor3; rotorBTrigger = rotor3Trigger; break;
case "IV": rotorB=rotor4; rotorBTrigger = rotor4Trigger; break;
case "V": rotorB=rotor5; rotorBTrigger = rotor5Trigger; break;
}
r = document.getElementById("rotor3Select").value;
switch(r) {
case "I": rotorC=rotor1; rotorCTrigger = rotor1Trigger; break;
case "II": rotorC=rotor2; rotorCTrigger = rotor2Trigger; break;
case "III": rotorC=rotor3; rotorCTrigger = rotor3Trigger; break;
case "IV": rotorC=rotor4; rotorCTrigger = rotor4Trigger; break;
case "V": rotorC=rotor5; rotorCTrigger = rotor5Trigger; break;
}
var rotor3Setting = document.getElementById("rotor3Setting").value;
var offset3Setting = alphabet.indexOf(rotor3Setting);
var rotor2Setting = document.getElementById("rotor2Setting").value;
var offset2Setting = alphabet.indexOf(rotor2Setting);
var rotor1Setting = document.getElementById("rotor1Setting").value;
var offset1Setting = alphabet.indexOf(rotor1Setting);
rotorA = caesarShift(rotorA,offset1Setting);
rotorB = caesarShift(rotorB,offset2Setting);
rotorC = caesarShift(rotorC,offset3Setting);
if (offset1Setting>0) rotorA = rotorA.substring(26-offset1Setting) + rotorA.substring(0,26-offset1Setting);
if (offset2Setting>0) rotorB = rotorB.substring(26-offset2Setting) + rotorB.substring(0,26-offset2Setting);
if (offset3Setting>0) rotorC = rotorC.substring(26-offset3Setting) + rotorC.substring(0,26-offset3Setting);
var rotorALetter = document.getElementById("rotor1Position").value;
var rotorBLetter = document.getElementById("rotor2Position").value;
var rotorCLetter = document.getElementById("rotor3Position").value;
document.getElementById("rotor1Current").innerText = rotorALetter;
document.getElementById("rotor2Current").innerText = rotorBLetter;
document.getElementById("rotor3Current").innerText = rotorCLetter;
var current = alphabet.indexOf(rotorALetter);
var previous = (current + 25) % 26;
var next = (current + 1) % 26;
document.getElementById("rotor1Previous").innerText = alphabet.charAt(previous);
document.getElementById("rotor1Next").innerText = alphabet.charAt(next);
current = alphabet.indexOf(rotorBLetter);
previous = (current + 25) % 26;
next = (current + 1) % 26;
document.getElementById("rotor2Previous").innerText = alphabet.charAt(previous);
document.getElementById("rotor2Next").innerText = alphabet.charAt(next);
current = alphabet.indexOf(rotorCLetter);
previous = (current + 25) % 26;
next = (current + 1) % 26;
document.getElementById("rotor3Previous").innerText = alphabet.charAt(previous);
document.getElementById("rotor3Next").innerText = alphabet.charAt(next);
document.getElementById("rotorSettings").style.display="none";
}
function clearText() {
if (mode=="Encrypt") {
document.getElementById("plaintext").innerHTML="<H1>Plaintext:</H1>";
document.getElementById("ciphertext").innerHTML="<H1>Ciphertext:</H1>";
} else {
document.getElementById("plaintext").innerHTML="<H1>Ciphertext:</H1>";
document.getElementById("ciphertext").innerHTML="<H1>Plaintext:</H1>";
}
letterCount =0;
clearLog();
}
function encrypt() {
mode="Encrypt";
document.getElementById("enigma-book").className="page1";
clearText();
}
function decrypt() {
mode="Decrypt";
document.getElementById("enigma-book").className="page2";
clearText();
}
function enigmaWindow() {
window.open("./enigma-M3.html",'_blank','toolbar=no, menubar=no, location=no, resizable=yes, addressbar=no, width=800, height=600');
}
function enigmaInstructions() {
window.open("./enigma-instructions.html",'_blank','toolbar=no, menubar=no, location=no, resizable=yes, addressbar=no, width=860, height=600');
}