title: Error: cookieParser("secret") required for signed cookies
body: <p>I am working on express/node.js and trying to understand cookies  of expressjs and I'm setting cookie like this: </p>
  
  <pre><code>var express = require('express');
  var app = express();
  var cookieParser = require('cookie-parser');
  app.use(cookieParser());
  
  app.get('/', function(req, res){
      res.cookie('cookie1', 'This is my first cooke', {maxAge: 1000*60*60*24*7, httpOnly: true});
      res.end('Cookie has been set');
  });
  </code></pre>
  
  <p>And accessing cookies as follows:</p>
  
  <pre><code>app.get('/readCookies',function(req, res){
      res.send(req.cookies.cookie1);
  });
  </code></pre>
  
  <p>But the problem is <code>signed: true</code> option when including this one for encoding cookie value during setting the cookie I am getting the following error:</p>
  
  <pre><code>Error: cookieParser("secret") required for signed cookies
  </code></pre>
  
  <p>Please help me and thanks in advance</p>