47 lines
870 B
JavaScript
47 lines
870 B
JavaScript
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'use strict';
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const crypto = require ('crypto');
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/**
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* creates a random string
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*
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* @param {number} len string length default: 8
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* @returns {string} random string
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*/
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function random_string (len = 8) {
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if (len < 1)
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throw new Error ('invalid length');
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return crypto.randomBytes (Math.ceil (len * 3 / 4))
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.toString ('base64')
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.substr (0, len);
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}
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/**
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* creates a random hexadecimal string
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*
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* @param {number} len length
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* @returns {string} hex string
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*/
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function random_hex (len = 8) {
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if (len < 1)
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throw new Error ('invalid length');
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return crypto.randomBytes (Math.ceil (len / 2))
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.toString ('hex')
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.substr (0, len);
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}
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/**
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* creates a 64 character long random hex string
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*
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* @returns {string} salt
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*/
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function create_salt () {
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return random_hex (64);
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}
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module.exports = {
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create_salt,
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random_hex,
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random_string
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};
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