Can nodejs generate SSL certificates?

Use shell for certificate:

openssl genrsa -out server-key.pem 1024
openssl req -new -key server-key.pem -out server-csr.pem
openssl x509 -req -in server-csr.pem -signkey server-key.pem -out server-cert.pem

Then use them in node.js

var https = require('https');
https.createServer({
    key: fs.readFileSync('server-key.pem'),
    cert: fs.readFileSync('server-cert.pem')
},
function (req,res) {
      ... 
})

EDIT:

You can also give a try to this project in NPM : https://npmjs.org/package/openssl-wrapper

I found it searching the NPM repo : https://npmjs.org/search?q=openssl

I did not tried or checked it myself, but it looks like a way to generate the certificate using node, which is the original question.

var openssl = require('openssl-wrapper');
var password = 'github';

return openssl.exec('genrsa', {des3: true, passout: 'pass:' + password, '2048': false}, function(err, buffer) {
    console.log(buffer.toString());
});

I'd be interested by a feedback. ;)

In case somebody does want to programatically create CSRs from node.js, I have created a nodejs module which uses openssl to create a private key and a CSR.

Edit: Use pem instead. It is much more complete and probably more reliable.

Edit2: Actually, pem is also just a simple wrapper over openssh. For a pure js implementation, look into forge