decrypt(data, convert = true) {
        var params = JSON.parse(atob(data));
        var decrypted = CryptoJS.AES.decrypt(params.value, CryptoJS.enc.Base64.parse(this.key), {
            iv: CryptoJS.enc.Base64.parse(params.iv)
        }).toString(CryptoJS.enc.Utf8);

        return convert ? unserialize(decrypted) : decrypted;
    }

var hash = CryptoJS.SHA256("Message");
​
hash.toString(CryptoJS.enc.Base64)
> "L3dmip37+NWEi57rSnFFypTG7ZI25Kdz9tyvpRMrL5E=";
​
hash.toString(CryptoJS.enc.Hex)
> "2f77668a9dfbf8d5848b9eeb4a7145ca94c6ed9236e4a773f6dcafa5132b2f91";

var words = CryptoJS.enc.Base64.parse("SGVsbG8sIFdvcmxkIQ==");
​
var base64 = CryptoJS.enc.Base64.stringify(words);
​
var words = CryptoJS.enc.Latin1.parse("Hello, World!");
​
var latin1 = CryptoJS.enc.Latin1.stringify(words);
​
var words = CryptoJS.enc.Hex.parse("48656c6c6f2c20576f726c6421");
​
var hex = CryptoJS.enc.Hex.stringify(words);
​
var words = CryptoJS.enc.Utf8.parse("𔭢");
​
var utf8 = CryptoJS.enc.Utf8.stringify(words);
​
var words = CryptoJS.enc.Utf16.parse("Hello, World!");
​
var utf16 = CryptoJS.enc.Utf16.stringify(words);
​
var words = CryptoJS.enc.Utf16LE.parse("Hello, World!");
​
var utf16 = CryptoJS.enc.Utf16LE.stringify(words);

const encryptKey = (data, key) => {
  console.log('encrypting: ', data, key);
  const stampedData = getStampedData(data);
  const encJson = CryptoJS.AES.encrypt(JSON.stringify(stampedData), key).toString();
  let encData = CryptoJS.enc.Base64.stringify(CryptoJS.enc.Utf8.parse(encJson));
  console.log('returning: ', encData);
  return encData;
};

var JsonFormatter = {
  stringify: function(cipherParams) {
    // create json object with ciphertext
    var jsonObj = { ct: cipherParams.ciphertext.toString(CryptoJS.enc.Base64) };
​
    // optionally add iv or salt
    if (cipherParams.iv) {
      jsonObj.iv = cipherParams.iv.toString();
    }
​
    if (cipherParams.salt) {
      jsonObj.s = cipherParams.salt.toString();
    }
​
    // stringify json object
    return JSON.stringify(jsonObj);
  },
  parse: function(jsonStr) {
    // parse json string
    var jsonObj = JSON.parse(jsonStr);
​
    // extract ciphertext from json object, and create cipher params object
    var cipherParams = CryptoJS.lib.CipherParams.create({
      ciphertext: CryptoJS.enc.Base64.parse(jsonObj.ct)
    });
​
    // optionally extract iv or salt
​
    if (jsonObj.iv) {
      cipherParams.iv = CryptoJS.enc.Hex.parse(jsonObj.iv);
    }
​
    if (jsonObj.s) {
      cipherParams.salt = CryptoJS.enc.Hex.parse(jsonObj.s);
    }
​
    return cipherParams;
  }
};
​
var encrypted = CryptoJS.AES.encrypt("Message", "Secret Passphrase", {
  format: JsonFormatter
});
​
encrypted
> {
    ct: "tZ4MsEnfbcDOwqau68aOrQ==",
    iv: "8a8c8fd8fe33743d3638737ea4a00698",
    s: "ba06373c8f57179c"
  };
​
var decrypted = CryptoJS.AES.decrypt(encrypted, "Secret Passphrase", {
  format: JsonFormatter
});
​
decrypted.toString(CryptoJS.enc.Utf8)
> "Message";