flightworker-atk-auth/lib/crypto.js

## 中间件部署

'use strict'
const crypto = require('crypto')

const randomMax = max => Math.floor(Math.random()* max)

const md5 = str => {
    const md5 = crypto.createHash("md5")
    md5.update(str)
    return md5.digest('hex')
}

exports = module.exports = {
    key(len, prefix){
        const key = parseInt(Math.random() * 10000000)
        const token = md5(`${key}-${new Date - 0}@${prefix || ''}`)
        return len ? token.substr(randomMax(len)) : token
    }
}