var ne = require('node-encrypt');

ne.encrypt({ text: 'foo', key: 'f66de9e326b4a7defaa0b1e0f015a140' }, (err, ciphertext) => {
  if (err) return (err);
  console.log(ciphertext);
})

// or use the environment variable ENCRYPTION_KEY to store the key
process.env.ENCRYPTION_KEY = 'f66de9e326b4a7defaa0b1e0f015a140';
ne.encrypt({ text: 'foo' }, (err, ciphertext) => {
  console.log(ciphertext);
})

// decrypt like this
ne.decrypt({ cipher: 'zXAkwFWwTUqxLEscQhnyDQ==--H9eRMjuw1bMZ/k+ki08' }, (err, plaintext) => {
  console.log(plaintext);
})

// create a hash from plaintext with salt
ne.hash({ text: 'foo', salt: 'salty' }, (err, hash) => {
  console.log(hash);
}

// create a hash from plaintext without salt
ne.hash({ text: 'foo'}, (err, hash) => {
  console.log(hash);
}

// create a hash from plaintext using salt stored in environment variable HASH_SALT
process.env.HASH_SALT = 'salty';
ne.hash({ text: 'foo'}, (err, hash) => {
  console.log(hash);
}