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@small-tech/eff-diceware-passphrase

v1.0.1

Published

Single-file, no-dependency, bring-your-own-crypto ESM version of Emil Bayes’s module of the same name.

Downloads

7

Readme

EFF Diceware Passphrase

Forked from Emil Bay’s excellent module of the same name.

This is a single-file ESM version of Emil’s excellent module that also removes the sodium-native dependency. Instead, it employs a bring-your-own-crypto approach where you pass a reference to Node’s default crypto module when using the module under Node and it automatically detects and uses the Web Crypto API when running in the browser.

Install

npm i @small-tech/eff-diceware-passphrase

Examples

Node.js

import crypto from 'crypto'
import EFFDicewarePassphrase from '@small-tech/eff-diceware-passphrase'

const generate = new EFFDicewarePassphrase(crypto)
const passphrase1 = generate.words(8)
const passphrase2 = generate.entropy(100)

console.log('8 words:', passphrase1.join(' '))
console.log('100 bits of entropy:', passphrase2.join(' '))

(You can find this example in and run it from the examples/node folder.)

Browser

<!doctype html>
<html lang='en'>
<head>
  <meta charset='UTF-8'>
  <meta name='viewport' content='width=device-width, initial-scale=1.0'>
  <title>EFF Diceware Passphrase</title>
</head>
<body>
  <h1>EFF Diceware Passphrase Example</h1>
  <ul>
    <li><strong>8 words:</strong> <span id='passphrase1'></span></li>
    <li><strong>100 bits of entropy:</strong> <span id='passphrase2'></span></li>
  </ul>
  <script type="module">
    import EFFDicewarePassphrase from './eff-diceware-passphrase.min.js'

    const generate = new EFFDicewarePassphrase()
    const passphrase1 = generate.words(8)
    const passphrase2 = generate.entropy(100)

    document.getElementById('passphrase1').innerText = passphrase1.join(' ')
    document.getElementById('passphrase2').innerText = passphrase2.join(' ')
  </script>
</body>
</html>

You can find this example (along with a copy of the minified module bundle) in the examples/browser folder.

Bundling

After you’ve installed the dev dependencies using npm i, you can build a single-file ESM bundle by running:

npm run build

Or, for the minified version:

npm run build-minified

Find the bundles in the dist folder.

The non-minified version is 88kb in size and the minified one is 79kb. The bulk of the size comes from the EFF word list itself, which is 77kb.

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Copyright

License

ISC