keeweb/app/scripts/util/password-generator.js

'use strict';

var kdbxweb = require('kdbxweb');

var PasswordGenerator = {
    charRanges: {
        upper: 'ABCDEFGHJKLMNPQRSTUVWXYZ',
        lower: 'abcdefghijkmnpqrstuvwxyz',
        digits: '123456789',
        special: '!@#$%^&*_+-=,./?;:`"~\'\\',
        brackets: '(){}[]<>',
        high: '¡¢£¤¥¦§©ª«¬®¯°±²³´µ¶¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþ',
        ambiguous: 'O0oIl'
    },
    generate: function(opts) {
        if (!opts || typeof opts.length !== 'number' || opts.length < 0) {
            return '';
        }
        var ranges = Object.keys(this.charRanges)
            .filter(function(r) { return opts[r]; })
            .map(function(r) { return this.charRanges[r]; }, this);
        if (!ranges.length) {
            return '';
        }
        var randomBytes = kdbxweb.Random.getBytes(opts.length);
        var chars = [];
        for (var i = 0; i < opts.length; i++) {
            var range = ranges[i % ranges.length];
            var rand = Math.round(Math.random() * 1000) + randomBytes[i];
            chars.push(range[rand % range.length]);
        }
        return _.shuffle(chars).join('');
    },
    present: function(length) {
        return new Array(length + 1).join('•');
    }
};

module.exports = PasswordGenerator;