Get public key or other fields from a cert

extract_public_key.js

/*
cd into directory with root.cert
node extract_public_key.js
*/
var fs = require('fs');

cert = fs.readFileSync('root.cert').toString('utf8');

var pkEnc = cert.split('.')[1]

console.log(new Buffer(pkEnc, 'base64').toString('utf8'));