55 lines
1.6 KiB
JavaScript
55 lines
1.6 KiB
JavaScript
// const crypto = require('node:crypto');
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import crypto from 'node:crypto';
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import _ from 'lodash';
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const PASSWORD_LENGTH = 10;
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const s = '23456789abcdefghjkmnpqrstuvwxyzABCDEFGHJKMNPQRSTUVWXYZ!.,;#$%/+*';
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const buf = crypto.randomBytes(PASSWORD_LENGTH);
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console.log(buf, Array.from(buf));
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const password = Array.from(buf)
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.map((byte) => s.charAt(byte % s.length))
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.join('');
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const getPassword = (amount = 10) => {
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const chars = '23456789abcdefghjkmnpqrstuvwxyzABCDEFGHJKMNPQRSTUVWXYZ!.,;#$%/+*'.split('');
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return _.shuffle(chars).slice(0, amount).join('');
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};
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console.log(password);
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console.log(getPassword());
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// Source - https://stackoverflow.com/a/2450976
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// Posted by ChristopheD, modified by community. See post 'Timeline' for change history
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// Retrieved 2026-07-10, License - CC BY-SA 4.0
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function shuffle(array) {
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let currentIndex = array.length;
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// While there remain elements to shuffle...
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while (currentIndex != 0) {
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// Pick a remaining element...
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let randomIndex = Math.floor(Math.random() * currentIndex);
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currentIndex--;
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// And swap it with the current element.
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[array[currentIndex], array[randomIndex]] = [array[randomIndex], array[currentIndex]];
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}
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return array;
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}
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// Used like so
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let arr = [2, 11, 37, 42];
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shuffle(arr);
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console.log(arr);
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// Übung 28: Passwortgenerator
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// Was macht der folgende Code?
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// OK: Der Titel verrät es schon. Versuche dennoch, das Programm zu verstehen! Benutze die Dokumentation der Standardbibliothek, um nachzuschlagen, was crypto.randomBytes(…) genau macht!
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// Bonusfrage: Warum sind in den Zeichen «1», «i» und «l» nicht enthalten, genau so wenig wie «0» und «o»?
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