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main.js
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main.js
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"use strict";
/* Elements */
const e_password = document.getElementById("password");
const e_togglePassword = document.getElementById("togglePassword");
const e_generatePassword = document.getElementById('generatePassword');
const e_copyPassword = document.getElementById('copyPassword');
const e_passwordLength = document.getElementById("passwordLength");
const e_passwordLengthText = document.getElementById("passwordLengthText");
const e_passwordCrackTime = document.getElementById('passwordCrackTime');
const e_progress = document.getElementsByClassName('progress')[0];
const e_passwordType = document.getElementById('passwordType');
const e_partMain = document.getElementById('partMain');
const e_includeUppercase = document.getElementById('includeUppercase');
const e_includeLowercase = document.getElementById('includeLowercase');
const e_includeDigits = document.getElementById('includeDigits');
const e_includeSymbols = document.getElementById('includeSymbols');
const e_title = document.getElementById('title');
const e_metaThemeColor = document.querySelector('meta[name="theme-color"]');
/* Constants */
const generationData = {
alphabets: 'abcdefghijklmnopqrstuvwxyz',
digits: '0123456789',
symbols: '-+_!@#$%^&*.,?]',
separators: '-=+/_.?:;|',
wordList: ['correct', 'horse', 'battery', 'staple'],
obviousSymbolSubstitutions: {
'a': '@',
's': '$',
'h': '#',
'i': '!',
'c': '('
},
obviousDigitSubstitutions: {
'a': '4',
'o': '0',
'l': '1',
'e': '3',
't': '7',
's': '5'
},
substitutions: {
'a': '@',
'h': '#'
}
};
// Populate the wordlist with words from the text file.
(async () => {
let _response = await fetch('wordlist.txt');
let _responseText = await _response.text();
generationData.wordList = _responseText.split('\n');
})();
/* Global Variables */
/** Current generator being used represented as a string. */
var currentGenerator;
/* Utility Functions */
/**
* Randomly generate an integer between two values.
* @param {Number} min Minimum (inclusive).
* @param {Number} max Maximum (inclusive).
* @return {NumbeR} Randomly generated number.
*/
function randomRange(min, max) {
min = Math.ceil(min);
max = Math.floor(max);
return Math.floor(Math.random() * (max - min + 1)) + min;
}
/**
* Randomly pick an element from given array.
* @param {Array} array Input array.
* @return {any} Random item from the array.
*/
function randomChoice(arr) {
return arr[Math.floor(Math.random() * arr.length)];
}
/**
* Randomly pick between true/false with custom probability.
* @param {Number} probability percentage.
* @return {Boolean} Returns true specified percent of the times.
*/
function randomChance(probability) {
return Math.random() < probability;
}
/**
* Randomly shuffle an array using the [Fisher-Yates (Durstenfeld)](https://en.wikipedia.org/wiki/Fisher%E2%80%93Yates_shuffle#The_modern_algorithm) algorithm.
* @param {Array} array Input array.
* @return {Array} Shuffled, output array.
*/
function randomShuffle(array) {
for (let i = array.length - 1; i > 0; i--) {
const j = Math.floor(Math.random() * (i + 1));
[array[i], array[j]] = [array[j], array[i]];
}
return array;
}
/**
* Calculates password entropy in bits.
* @param {String} password The password to calculate the entropy of.
* @return {Number} Bits of entropy.
*/
function calculatePasswordEntropy(password) {
let _uppercase = password.match(/(?=.*[A-Z])/) != null;
let _lowercase = password.match(/(?=.*[a-z])/) != null;
let _digits = password.match(/(?=.*\d)/) != null;
let _symbols = password.match(/(?=.*[-+_!@#$%^&*.,?])/) != null;
// E = L * log(R) / log(2)
const R = (26 * _lowercase) + (26 * _uppercase) + (10 * _digits) + (14 * _symbols);
const E = password.length * (Math.log(R) / Math.log(2));
return Math.round(E);
}
/**
* Check if all the checkboxes are unticked.
*/
function areAllCheckboxesUnticked() {
// single if statement would've worked here but this might be used differently in a future update
let _remains = 4;
if (!e_includeUppercase.checked) _remains -= 1;
if (!e_includeLowercase.checked) _remains -= 1;
if (!e_includeDigits.checked) _remains -= 1;
if (!e_includeSymbols.checked) _remains -= 1;
if (_remains === 0) return true;
else return false;
}
/* Password Generator Functions */
/**
* **Generator: Ramdom String**
*
* Generates random string based on given parameters of specified length.
* @param {Number} length The length of the generated password.
* @param {Boolean} uppercase Whether uppercase alphabets should be included.
* @param {Boolean} lowercase Whether lowercase alphabets should be included.
* @param {Boolean} digits Whether digits should be included.
* @param {Boolean} symbols Whether symbols should be included.
* @return {String} A randomized, secure password.
*/
function generateRandomString(length, uppercase, lowercase, digits, symbols) {
let _randomChars = [];
let _passData = {
uppercase: 0,
lowercase: 0,
digits: 0,
symbols: 0
};
let _conditions = 0;
if (uppercase) _conditions++;
if (lowercase) _conditions++;
if (digits) _conditions++;
if (symbols) _conditions++;
let _chunks = Math.floor(length / _conditions);
let _leftover = length % _conditions;
// assigning equal values to all halves
if (uppercase) _passData.uppercase = _chunks;
if (lowercase) _passData.lowercase = _chunks;
if (digits) _passData.digits = _chunks;
if (symbols) _passData.symbols = _chunks;
// If we have any number remaining, we'll add that to the existing satisfied conditions in the following order.
if (_leftover > 0) {
if (_passData.lowercase > 0) {
_passData.lowercase += _leftover;
} else if (_passData.uppercase > 0) {
_passData.uppercase += _leftover;
} else if (_passData.digits > 0) {
_passData.digits += _leftover;
} else if (_passData.symbols > 0) {
_passData.digits += _leftover;
}
}
// Generating characters.
for (let i = 0; i < _passData.lowercase; i++) {
_randomChars.push(randomChoice(generationData.alphabets));
}
for (let i = 0; i < _passData.uppercase; i++) {
_randomChars.push(randomChoice(generationData.alphabets.toUpperCase()));
}
for (let i = 0; i < _passData.digits; i++) {
_randomChars.push(randomChoice(generationData.digits));
}
for (let i = 0; i < _passData.symbols; i++) {
_randomChars.push(randomChoice(generationData.symbols));
}
let result = _randomChars.join(''); // shuffle
return result;
}
/**
* **Generator: Pseudoword**
*
* Generates a password that can be pronounced (most of the times).
* @param {Number} length The length of the generated pseudoword.
* @return {String} A pronouncable pseudoword.
*/
function generatePseudoword(length) {
return GPW.pronounceable(length);
}
/**
* **Generator: Pseudoword + Passphrase**
*
* Generates a passphrase that consists of pseudowords.
* @param {Number} wordsLength The number of words in passphrase.
* @param {Number} minLength Minimum length of each word.
* @param {Number} maxLength Maximum length of each word.
* @return {Array} Passphrases in an array.
*/
function generatePseudowordPassphrase(wordsLength, minLength, maxLength) {
let _passphrases = [];
for (let i = 0; i < wordsLength; i++) {
let _randomMinMax = randomRange(minLength, maxLength);
let _generatedWord = generatePseudoword(_randomMinMax);
_passphrases.push(_generatedWord);
}
return _passphrases;
}
/**
* **Generator: Passphrase**
*
* Generates a passphrase using words.
* @param {Number} wordsLength The number of words in passphrase.
* @return {Array} Passphrases in an array.
*/
function generatePassphrase(wordsLength) {
let _passphrases = [];
for (let i = 0; i < wordsLength; i++) {
let _generatedWord = randomChoice(generationData.wordList);
_passphrases.push(_generatedWord);
}
return _passphrases;
}
/**
* [**M**odify **U**ntil **N**ot **G**uessed **E**asily.](https://en.wikipedia.org/wiki/Munged_password)
*
* Make an existing password more secure by by substituting characters.
* @param {String} password The password.
* @param {Boolean} uppercase Whether to use uppercase english alphabets.
* @param {Boolean} lowercase Whether to use lowercase english alphabets.
* @param {Boolean} digits Whether to use digits.
* @param {Boolean} symbols Whether to use symbols.
* @return {String} Resulting password.
*/
function munge(password, uppercase, lowercase, digits, symbols) {
let _pass = password;
let _split = _pass.split('');
// let words = _split.includes(' ');
// First letter substitution.
let _firstChar = _split[0].toLowerCase();
if (symbols && digits && (_firstChar in generationData.obviousDigitSubstitutions && _firstChar in generationData.obviousSymbolSubstitutions)) {
// Substitute randomly with 50% chance for either way.
_split[0] = randomChance(.5) ? generationData.obviousDigitSubstitutions[_firstChar] : generationData.obviousSymbolSubstitutions[_firstChar];
} else if (digits && _firstChar in generationData.obviousDigitSubstitutions) {
_split[0] = generationData.obviousDigitSubstitutions[_firstChar];
}
//let _lastChar = '';
for (let i = 0; i < _split.length; i++) {
const _char = _split[i];
if (lowercase && uppercase) {
_split[i] = randomChance(.5) ? _char.toLowerCase() : _char.toUpperCase();
// To-do: Making the munging more easier to remember.
// If the previous character was a space. The next character will most likely be the start of a new word.
// Capitalizing this possibly new word would make the password somewhat easier to remember.
/*
if (words) { code }
if (_lastChar === ' ') {
_split[i] = _char.toUpperCase();
}*/
} else if (lowercase) {
_split[i] = _char.toLowerCase();
} else if (uppercase) {
_split[i] = _char.toUpperCase();
}
//_lastChar = _char;
/*if (symbols && _char in generationData.substitutions && randomChance(.6)) {
_split[i] = generationData.substitutions[_char];
}*/
}
// Append digits at the end 50% of the time if the password has suitable length.
// To-Do: Make these digits memorable numbers.
if (digits && _split.length < 14 && randomChance(.5)) {
_split.push(randomRange(1000, 9999).toString());
}
_pass = _split.join('');
if (symbols /* && words */) {
_pass = _pass.replaceAll(' ', randomChoice(generationData.separators))
}
return _pass;
}
/* Generator Functions */
/**
* Regenerates password and updates fields.
*/
function regeneratePassword() {
e_password.value = generatePassword(currentGenerator, true);
updateStrength();
updateSlider();
}
/**
* Set the password strength progress bar value with color.
*/
function setProgressBar(percentage, color = 'auto') {
e_progress.style.width = `${percentage}%`;
if (color === 'color') {
if (percentage > 80) color = "#006b4d";
else if (percentage > 50) color = "#00a878";
else if (percentage > 33) color = "#efc20f";
else if (percentage > 20) color = "#be4e3a";
else color = "#df6661";
}
e_progress.style.backgroundColor = color;
e_metaThemeColor.setAttribute('content', color);
}
/**
* Update the character/word length slider.
*/
function updateSlider() {
if (currentGenerator === 'passphrase' || currentGenerator === 'pseudoword+passphrase') {
let _len = e_passwordLength.value;
// Update label.
e_passwordLengthText.textContent = `Word Count: (${_len})`;
// Update slider (capped at 32).
//e_passwordLength.value = _len > 32 ? 32 : _len;
e_passwordLength.max = 32; // not above 32 words.
} else {
let _len = e_password.value.length;
// Update label.
e_passwordLengthText.textContent = `Length (${_len})`;
// Update slider (capped at 128).
e_passwordLength.value = _len > 128 ? 128 : _len;
e_passwordLength.max = 128; // not above 128 characters.
}
}
/**
* Update the progress bar and the background color from the strength of the password.
*/
function updateStrength() {
// Estimate time required to crack the password.
let _strength = zxcvbn(e_password.value);
let _crackTime = _strength.crack_times_display["online_no_throttling_10_per_second"];
// Display it in text for the user to see.
e_passwordCrackTime.innerText = _crackTime;
switch (_strength.score) {
case 0: {
setProgressBar(20, '#df6661');
e_partMain.style.backgroundColor = "#d1364e"; // red
break;
}
case 1: {
setProgressBar(33, '#be4e3a');
e_partMain.style.backgroundColor = "#993220";
break;
}
case 2: {
setProgressBar(50, '#efc20f');
e_partMain.style.backgroundColor = "#B49B18"; // dark yellow
break;
}
case 3: {
setProgressBar(80, '#00a878');
e_partMain.style.backgroundColor = "#33c770";
break;
}
default: {
setProgressBar(100, '#006b4d');
e_partMain.style.backgroundColor = "#1c815a";
break;
}
}
// Take time in calculating the password entropy.
setTimeout(() => {
e_password.title = `${calculatePasswordEntropy(e_password.value)} bits of bruteforce entropy.`;
}, 500);
}
/**
* Sets up the environment for specified generator and regenerates password.
*/
function setGenerator(generator) {
currentGenerator = generator;
if (currentGenerator === 'randomString') {
e_title.innerText = 'Generate a strong and secure password.';
} else if (currentGenerator === 'pseudoword') {
e_title.innerText = 'Generate a strong and pronouncable password.';
} else if (currentGenerator === 'passphrase') {
e_title.innerText = 'Generate a secure passphrase.';
} else if (currentGenerator === 'pseudoword+passphrase') {
e_title.innerText = 'Generate a strong and pronouncable passphrase.';
}
setOptimumValues(currentGenerator);
regeneratePassword();
}
/**
* Set the optimum (default) values for the generators.
*/
function setOptimumValues(generator) {
if (generator === 'randomString') {
e_passwordLength.value = 8;
e_includeDigits.checked = true;
e_includeLowercase.checked = true;
e_includeUppercase.checked = true;
e_includeSymbols.checked = false;
} else if (generator === 'passphrase') {
e_passwordLength.value = 4;
e_includeDigits.checked = false;
e_includeLowercase.checked = true;
e_includeUppercase.checked = false;
e_includeSymbols.checked = true;
} else if (generator === 'pseudoword') {
e_passwordLength.value = 8;
e_includeDigits.checked = true;
e_includeLowercase.checked = true;
e_includeUppercase.checked = false;
e_includeSymbols.checked = false;
} else if (generator === 'pseudoword+passphrase') {
e_passwordLength.value = 4;
e_includeDigits.checked = false;
e_includeLowercase.checked = true;
e_includeUppercase.checked = false;
e_includeSymbols.checked = true;
}
}
/**
* Generates a new password using whichever generator is specified and returns as string.
*/
function generatePassword(generator, mungePassword) {
// To-Do: Perhaps include parameters as an object argument for the generate password function.
let _password = ''
if (generator === 'randomString') {
_password = generateRandomString(
parseInt(e_passwordLength.value),
e_includeUppercase.checked,
e_includeLowercase.checked,
e_includeDigits.checked,
e_includeSymbols.checked
);
} else if (generator === 'pseudoword') {
_password = generatePseudoword(parseInt(e_passwordLength.value));
} else if (generator === 'passphrase') {
_password = generatePassphrase(parseInt(e_passwordLength.value)).join(' ')
} else if (generator === 'pseudoword+passphrase') {
_password = generatePseudowordPassphrase(
parseInt(e_passwordLength.value),
randomRange(4, 5),
randomRange(7, 9)
).join(' ');
}
return mungePassword ? munge(
_password,
e_includeUppercase.checked,
e_includeLowercase.checked,
e_includeDigits.checked,
e_includeSymbols.checked
) : _password;
}
/* Event Listeners */
// Prevents all checkboxes from being unticked.
e_includeUppercase.addEventListener('click', (e) => {
if (areAllCheckboxesUnticked()) {
e.preventDefault(); // prevent unticking if all others are unticked.
} else {
regeneratePassword(); // regenerate the password with new attributes.
}
});
e_includeLowercase.addEventListener('click', (e) => {
if (areAllCheckboxesUnticked()) {
e.preventDefault(); // prevent unticking if all others are unticked.
} else {
regeneratePassword(); // regenerate the password with new attributes.
}
});
e_includeDigits.addEventListener('click', (e) => {
if (areAllCheckboxesUnticked()) {
e.preventDefault(); // prevent unticking if all others are unticked.
} else {
regeneratePassword(); // regenerate the password with new attributes.
}
});
e_includeSymbols.addEventListener('click', (e) => {
if (areAllCheckboxesUnticked()) {
e.preventDefault(); // prevent unticking if all others are unticked.
} else {
regeneratePassword(); // regenerate the password with new attributes.
}
});
// Show / hide the password input field.
e_togglePassword.addEventListener("click", function (e) {
// toggle the type attribute
const type = e_password.getAttribute("type") === "password" ? "text" : "password";
e_password.setAttribute("type", type);
// toggle the eye / eye slash icon
this.classList.toggle("bi-eye");
});
// When input is modified.
e_password.addEventListener("input", () => {
updateStrength();
updateSlider();
});
// Generate a new password.
e_generatePassword.addEventListener('click', () => {
regeneratePassword();
});
// Copy the generated password into clipboard.
e_copyPassword.addEventListener('click', () => {
e_password.select();
e_password.setSelectionRange(0, 99999); // for mobile
//document.execCommand('copy');
navigator.clipboard.writeText(e_password.value);
alert("Copied to clipboard.");
});
// When the password generator is changed.
e_passwordType.addEventListener('change', () => {
setGenerator(e_passwordType.value);
});
// When the slider is manually adjusted.
e_passwordLength.addEventListener('input', () => {
regeneratePassword();
});
// Automatically adjust font size based on password length to fit inside the password box.
/*e_password.addEventListener('input', () => {
let _val = e_password.value;
if (_val.length >= 30) {
e_password.style.fontSize = '1.5rem';
} else if (_val.length >= 20) {
e_password.style.fontSize = '2rem';
} else {
e_password.style.fontSize = '2.25rem';
}
});*/
setGenerator('randomString');