var keypair = require('keypair');
var crypt = new JSEncrypt();

function encrypt(plain_text, key) {
  crypt.setPublicKey(key);
  var encrypted = crypt.encrypt(plain_text);
  return encrypted;
}

function decrypt(encrypted, key) {
  crypt.setPrivateKey(key);
  var decrypted = crypt.decrypt(encrypted);
  return decrypted;
}

function generate_pair() {
  var pair = keypair();
  return pair;
}

// this would be a wrapper function that accesses the mongoDB and stores it
function encrypt_message(message) {

}

// helper function to store a message in the mongoDB, encrypt_message would be calling this
function store_message(message) {

}

// fetching a message from the mongodb with some kind of identifier
function get_message(id) {

}