TypeError:无法读取未定义CryptoJS的属性“0”

我在我的angular应用程序中使用CryptoJS来实现AES加密,但我一直在 TypeError: Cannot read property '0' of undefined 尝试在IV中发送空的16字节数组时出错

aesEncrypt(keys: string, value: string) { // encrypt api request parameter with aes secretkey

    var key = CryptoJS.enc.Utf8.parse(keys);
    //var iv = CryptoJS.enc.Utf8.parse(keys);
    var iv = new Uint16Array(16);
    var encrypted = CryptoJS.AES.encrypt(JSON.stringify(value), key,
        {
            //keySize: 256,
            keySize: 128,
            iv: iv,
            mode: CryptoJS.mode.CBC,
            padding: CryptoJS.pad.Pkcs7,
        });

    return encrypted.toString();
}

.NET代码:

private static AesCryptoServiceProvider AesCryptoServiceProvider(string key)
{
    AesCryptoServiceProvider aes = new AesCryptoServiceProvider();
    aes.KeySize = 128;
    aes.BlockSize = 128;
    aes.Mode = CipherMode.CBC;
    aes.Padding = PaddingMode.PKCS7;
    aes.Key = Encoding.UTF8.GetBytes(key);
    //aes.IV = Encoding.UTF8.GetBytes(key);
    aes.IV = new byte[16];
    return aes;
}

public static String encryptURLEncoding(byte[] key, String encryption) throws GeneralSecurityException 
{
    if (key.length != 16) 
    {
        throw new IllegalArgumentException("Invalid key size.");
    }

    // Setup AES tool.

    SecretKeySpec skeySpec = new SecretKeySpec(key, "AES");
    Cipher cipher = Cipher.getInstance("AES/CBC/PKCS7Padding");
    cipher.init(Cipher.ENCRYPT_MODE, skeySpec, new IvParameterSpec(new byte[16]));
    byte[] dstBuff = cipher.doFinal(encryption.getBytes());
    String encryptedStringData = android.util.Base64.encodeToString(dstBuff, android.util.Base64.DEFAULT);
    return encryptedStringData;
}

我想通过提供空的16字节数组来实现AES加密解密,因为这个应用程序与我在android、ios平台上使用相同加密设置的其他应用程序互连,但我的angular应用程序中出现错误,如何解决此问题?