将c#加密机制代码转换为javascript

我有代码加密和解密c#中的文件。现在我需要将加密任务移到前端，我需要编写javascript代码来加密.xlsx文件。下面是加密和解密的c#代码:

    private void EncryptFile(string inputFile, string outputFile)
    {
        try
        {
            string password = @"myKey123"; // Your Key Here
            UnicodeEncoding UE = new UnicodeEncoding();
            byte[] key = UE.GetBytes(password);
            string cryptFile = outputFile;
            FileStream fsCrypt = new FileStream(cryptFile, FileMode.Create);
            RijndaelManaged RMCrypto = new RijndaelManaged();
            CryptoStream cs = new CryptoStream(fsCrypt,
                RMCrypto.CreateEncryptor(key, key),
                CryptoStreamMode.Write);
            FileStream fsIn = new FileStream(inputFile, FileMode.Open);
            int data;
            while ((data = fsIn.ReadByte()) != -1)
                cs.WriteByte((byte)data);

            fsIn.Close();
            cs.Close();
            fsCrypt.Close();
        }
        catch(Exception ex)
        {
           // MessageBox.Show("Encryption failed!", "Error");
        }
    }
    private void DecryptFile(string inputFile, string outputFile)
    {
        {
            string password = @"myKey123"; // Your Key Here
            UnicodeEncoding UE = new UnicodeEncoding();
            byte[] key = UE.GetBytes(password);
            FileStream fsCrypt = new FileStream(inputFile, FileMode.Open);
            RijndaelManaged RMCrypto = new RijndaelManaged();
            CryptoStream cs = new CryptoStream(fsCrypt,
                RMCrypto.CreateDecryptor(key, key),
                CryptoStreamMode.Read);
            FileStream fsOut = new FileStream(outputFile, FileMode.Create);
            int data;
            while ((data = cs.ReadByte()) != -1)
                fsOut.WriteByte((byte)data);
            fsOut.Close();
            cs.Close();
            fsCrypt.Close();
        }
    }

我尝试在javascript中创建一个加密，如下所示:

    var reader = new FileReader();
    reader.onload = function (e) {
        var encrypted = CryptoJS.AES.encrypt(e.target.result, 'myKey123');
        var data = new FormData();

        var encryptedFile = new File([encrypted], file.name, { type: "text/plain", lastModified: new Date() });
        data.append('file', encryptedFile);
        $.ajax({
            url: 'http://localhost:57691/api/WithKey/UploadFile',
            data: data,
            cache: false,
            contentType: false,
            processData: false,
            type: 'POST',
            success: function (data) {
                debugger;
            }
        });
    };
    reader.readAsDataURL(file);

我还尝试将key转换为utf16，如下所示:

    function wordsToBytes (words) {
        for (var bytes = [], b = 0; b < words.length * 32; b += 8)
            bytes.push((words[b >>> 5] >>> (24 - b % 32)) & 0xFF);
        return bytes;
    }
  var temp = CryptoJS.enc.Utf16.parse('myKey123');
  var key = wordsToBytes(temp.words);

但是运气不好。我哪里做错了，你能帮帮我吗?在javascript中加密文件的正确方法是什么?