niceware
Version:
Utility for generating memorable passwords and converting random bytes into human-readable phrases
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<meta charset="utf8"/>
<meta name="viewport" content="width=device-width"/>
<title>Niceware</title>
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<body>
<a href="https://github.com/diracdeltas/niceware"><img style="position: absolute; top: 0; right: 0; border: 0;" src="https://camo.githubusercontent.com/38ef81f8aca64bb9a64448d0d70f1308ef5341ab/68747470733a2f2f73332e616d617a6f6e6177732e636f6d2f6769746875622f726962626f6e732f666f726b6d655f72696768745f6461726b626c75655f3132313632312e706e67" alt="Fork me on GitHub" data-canonical-src="https://s3.amazonaws.com/github/ribbons/forkme_right_darkblue_121621.png"></a>
<div style='width: 75%; margin: auto; margin-top: 100px; font-size: 20px;'>
<h2>Niceware</h2>
<p>
<a href="https://www.npmjs.com/package/niceware" target="_blank">Niceware</a> words are chosen at random from a list of 65,536 English language words. Each word
has 16 bits of entropy. An 8-word random passphrase has 128 bits of entropy which
is strong enough to use for cryptographic keys.
</p>
<p>
In comparison, words chosen
from a standard Diceware list with 7,776 words have ~12.92 bits of entropy per word
and therefore require more words to achieve the same security level.
</p>
<p>
Niceware can also be used to convert existing cryptographic keys and other random bytes into human-readable phrases.
</p>
<p>
Niceware is also available as a <a href='https://pypi.python.org/pypi/niceware'>pip module</a>, <a href='https://www.npmjs.com/package/nicepass'>CLI</a>, and <a href='https://chrome.google.com/webstore/detail/niceware-password/dhnichgmciickpnnnhfcljljnfomadag'>Chrome extension</a>, thanks to people who are not me.
</p>
<div>
<h3>Demo #1: Generate a Passphrase</h3>
<p style='font-size: 18px'>
<b>**For demonstration purposes only! You should not trust a third-party online tool to generate your passwords.**</b>
</p>
Passphrase strength:
<select name='size'>
<option value='2'>16 bits</option>
<option value='4'>32 bits</option>
<option value='6'>48 bits</option>
<option value='8'>64 bits</option>
<option value='10' selected>80 bits</option>
<option value='12'>96 bits</option>
<option value='14'>112 bits</option>
<option value='16'>128 bits</option>
</select>
<button onclick="generatePassphrase()">Generate passphrase</button>
<pre id="output" style="color:green;"></pre>
</div><div style='margin-top: 40px;'>
<h3>Demo #2: Convert hex to a fun phrase</h3>
<textarea placeholder='Enter some hex in here:' style='margin-bottom: 10px; width:400px; height:100px;'></textarea>
<div>
<button onclick="hexToWords()">Convert to words</button>
<span style='color: red; font-size: 16px;' id='error'></span>
</div>
<pre id="output2" style='margin-top: 10px; color: green'></pre>
</div><div>
<h3>Demo #3: Convert a Niceware phrase to hex</h3>
<input placeholder='Enter phrase here:' style='margin-bottom: 10px; width:400px;' />
<div>
<button onclick="wordsToHex()">Convert to hex</button>
<span style='color: red; font-size: 16px;' id='error2'></span>
</div>
<pre id="output3" style='margin-top: 10px; color: green'></pre>
</div>
</div>
<script src='browser/niceware.js' integrity="sha256-RGerdpbBHOeZyAKRRekyPf6DadvMV3c+clPCExwL2Bs=" crossorigin="anonymous"></script>
<script>
function generatePassphrase () {
var e = document.querySelector('select')
var size = e.options[e.selectedIndex].value
var passphrase = window.niceware.generatePassphrase(Number(size))
document.getElementById("output").innerText = passphrase.join(' ')
}
function hexToWords () {
document.querySelector('#error').innerText = ''
var text = document.querySelector('textarea').value
try {
text = text.toLowerCase().replace(/[,\s]/g, '')
if (text.length % 2 === 1) {
text = '0' + text
}
const arr = new Uint8Array(text.length / 2)
for (var i = 0; i < text.length / 2; i++) {
let val = Number('0x' + text[2 * i] + text[2 * i + 1])
if (val >= 0 && val < 256) {
arr[i] = val
} else {
throw new Error('Text must be hex-encoded.')
}
}
document.getElementById("output2").innerText =
window.niceware.bytesToPassphrase(arr).join(' ')
} catch (e) {
document.querySelector('#error').innerText = 'Error: ' + e.message
}
}
function wordsToHex () {
document.querySelector('#error2').innerText = ''
var text = document.querySelector('input').value
try {
text = text.toLowerCase().replace(/,/g, ' ').replace(/\s+/g, ' ')
const byteArray = window.niceware.passphraseToBytes(text.split(' '))
var str = ''
for (var i = 0; i < byteArray.length; i++) {
let char = byteArray[i].toString(16)
if (char.length === 1) {
char = '0' + char
}
str = str + char
}
document.getElementById("output3").innerText = str
} catch (e) {
document.querySelector('#error2').innerText = 'Error: ' + e.message
}
}
</script>
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