/**
 * @todo CryptoJS
 * @package https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.9-1/crypto-js.js
 */
var salt = "salt"; //salt
var iv = "1111111111111111"; //pass salt minimum length 12 chars
var iterations = "999"; //iterations

/**
 * Get key
 * @param {string} passphrase
 * @param {string} salt
 */
function getKey(passphrase, salt) {
    if (typeof CryptoJS == "undefined") return;
    var key = CryptoJS.PBKDF2(passphrase, salt, {
        hasher: CryptoJS.algo.SHA256,
        keySize: 64 / 8,
        iterations: iterations,
    });
    return key;
}

/**
 * Encrypt function
 * @param {string} passphrase
 * @param {string} plainText
 */
function userJSEncrypt(passphrase, plainText) {
    if (typeof CryptoJS == "undefined") return;
    var key = getKey(passphrase, salt);
    var encrypted = CryptoJS.AES.encrypt(plainText, key, {
        iv: CryptoJS.enc.Utf8.parse(iv),
    });

    return encrypted.ciphertext.toString(CryptoJS.enc.Base64);
}

/**
 * Decrypt function
 * @param {string} passphrase
 * @param {string} encryptedText
 */
function userJSDecrypt(passphrase, encryptedText) {
    if (typeof CryptoJS == "undefined") return;
    var key = getKey(passphrase, salt);
    var decrypted = CryptoJS.AES.decrypt(encryptedText, key, {
        iv: CryptoJS.enc.Utf8.parse(iv),
    });
    return decrypted.toString(CryptoJS.enc.Utf8);
}

// another
/*var salt = 'salt';
 var iv = '1111111111111111';
 */
var iterations = "999";

/**
 * Crypto get key
 * @param {String} passphrase
 * @param {String} salt
 */
function CryptoK(passphrase, salt) {
    var key = CryptoJS.PBKDF2(passphrase, salt, {
        hasher: CryptoJS.algo.SHA256,
        keySize: 64 / 8,
        iterations: iterations,
    });
    return key;
}

/**
 * Crypto encrypt
 * @param {String} passphrase
 * @param {String} plainText
 * @param {String} salt
 * @param {String} iv
 */
function CryptoE(passphrase, plainText, salt, iv) {
    var key = CryptoK(passphrase, salt, iterations);
    var encrypted = CryptoJS.AES.encrypt(plainText, key, {
        iv: CryptoJS.enc.Utf8.parse(iv),
    });

    return encrypted.ciphertext.toString(CryptoJS.enc.Base64);
}

/**
 * Crypto decrypt
 * @param {String} passphrase
 * @param {String} encryptedText
 * @param {String} salt
 * @param {String} iv
 */
function CryptoD(passphrase, encryptedText, salt, iv) {
    var key = CryptoK(passphrase, salt);
    var decrypted = CryptoJS.AES.decrypt(encryptedText, key, {
        iv: CryptoJS.enc.Utf8.parse(iv),
    });
    return decrypted.toString(CryptoJS.enc.Utf8);
}