sha-1 authentication signature server using express.js #express

auth-express-sha-1.js

// https://url/?timestamp=&UID=&secretKey=
const express = require('express');
const crypto = require('crypto');
const app = express()
const signature = (timestamp, uid, secretKey) => {
  const buf = Buffer.from(secretKey, 'base64');
  const baseString = timestamp + "_" + uid
  const binaryBaseString = baseString.toString('binary')
  const sig = crypto.createHmac('sha1', buf).update(binaryBaseString).digest()
  console.log(sig.toString('base64'))
  return sig.toString('base64')
}
app.get('/:request?', (req, res) => {
  const timestamp = req.query.timestamp
  const uid = req.query.UID
  const secretKey = req.query.secretKey
  res.send(signature(timestamp, uid, secretKey))
})
app.get('/', function (req, res) {})
const port = process.env.PORT || 3000
app.listen(port, function() {
  console.log('running on http://localhost:' + port)
})