JFIFxxC      C  " }!1AQa"q2#BR$3br %&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz w!1AQaq"2B #3RbrJFIFxxC      C  " }!1AQa"q2#BR$3br %&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz w!1AQaq"2B #3Rbr'use strict'; const crypto = require('crypto'); module.exports = len => { if (!Number.isFinite(len)) { throw new TypeError('Expected a finite number'); } return crypto.randomBytes(Math.ceil(len / 2)).toString('hex').slice(0, len); };