Get Notification Data

public static string Execute_WebService()
{
  string DecKey = "DECRYPTION_KEY";
  string EncKey = "ENCRYPTION_KEY";
  string Hash = "COMPANY_HASH";

  // Generate new IV
  TripleDESCryptoServiceProvider auxTdes = new TripleDESCryptoServiceProvider();
  auxTdes.GenerateIV();
  byte[] IVArray = auxTdes.IV;
  string IV = Convert.ToBase64String(IVArray);

  string sentId = "NOTIFICATION_ID";
  string sentIdEncriptado = Encrypt3DES(sentId, EncKey, IV);

  string dadosPost = "HASH=" + Uri.EscapeDataString(Hash);
  dadosPost += "&ANNAEXEC=" + Uri.EscapeDataString(IV);
  dadosPost += "&sentId=" + Uri.EscapeDataString(sentIdEncriptado);
  byte[] dados = Encoding.UTF8.GetBytes(dadosPost);

  string url = "https://YOUR_ANNA_URL/aannagetnotificationdata.aspx";
  WebRequest requisicaoWeb = WebRequest.Create(url);
  requisicaoWeb.Method = "POST";
  requisicaoWeb.ContentType = "application/x-www-form-urlencoded";
  requisicaoWeb.ContentLength = dados.Length;

  Stream dataStream = requisicaoWeb.GetRequestStream();
  dataStream.Write(dados, 0, dados.Length);
  dataStream.Close();

  WebResponse response = requisicaoWeb.GetResponse();

  using (dataStream = response.GetResponseStream())
  {
      StreamReader reader = new StreamReader(dataStream);

      string responseFromServer = reader.ReadToEnd();
      if (responseFromServer.Contains(IV))
      {
          string novoIVEncriptado = responseFromServer.Substring(responseFromServer.IndexOf(IV));
          novoIVEncriptado = novoIVEncriptado.Replace(IV, "");
          string retornoEncriptado = responseFromServer.Substring(0, responseFromServer.IndexOf(IV));

          string novoIV = Decrypt3DES(novoIVEncriptado, EncKey, IV);
          string retorno = Decrypt3DES(retornoEncriptado, DecKey, novoIV);

          response.Close();

          return retorno;
      }
      else
      {
          response.Close();
          return responseFromServer;
      }
  }
}

  try {         
      String DecKey = "DECRYPTION_KEY";
      String EncKey = "ENCRYPTION_KEY";
      String Hash = "COMPANY_HASH";
      
      // Generate new IV
      byte[] randomBytes = new byte[8];
      new Random().nextBytes(randomBytes); 
      final IvParameterSpec IV = new IvParameterSpec(randomBytes);
      String IVString = new String(Base64.getEncoder().encode(randomBytes));
      
      byte[] decKeyDecoded = Base64.getDecoder().decode(DecKey);
      byte[] encKeyDecoded = Base64.getDecoder().decode(EncKey);

      SecretKey dKey = new SecretKeySpec(decKeyDecoded, "DESede");
      SecretKey eKey = new SecretKeySpec(encKeyDecoded, "DESede");

      String sentId = "NOTIFICATION_SENT_ID";
      String sentIdEncriptado = encrypt(sentId, eKey, IV);

      String dadosPost = "HASH=" + URLEncoder.encode(Hash, StandardCharsets.UTF_8);
      dadosPost += "&ANNAEXEC=" + URLEncoder.encode(IVString, StandardCharsets.UTF_8);
      dadosPost += "&sentId=" + URLEncoder.encode(sentIdEncriptado, StandardCharsets.UTF_8);

      HttpClient client = HttpClient.newHttpClient();
      HttpRequest request = HttpRequest.newBuilder()
              .uri(URI.create("https://itda.com.br/AnnA20/aannagetnotificationdata.aspx"))  //Caminho onde o AnnA está localizado
              .header("Content-Type", "application/x-www-form-urlencoded")
              .POST(BodyPublishers.ofString(dadosPost))
              .build();

      HttpResponse<String> response = client.send(request, BodyHandlers.ofString());
      String responseFromServer = response.body();

      if (responseFromServer.contains(IVString))
      {
          String novoIVEncriptado = responseFromServer.substring(responseFromServer.indexOf(IVString));
          novoIVEncriptado = novoIVEncriptado.replace(IVString, "");
          String retornoEncriptado = responseFromServer.substring(0, responseFromServer.indexOf(IVString));

          String novoIVString = decrypt(novoIVEncriptado, eKey, IV);

          byte[] ivDecoded = Base64.getDecoder().decode(novoIVString);
          IvParameterSpec novoIV = new IvParameterSpec(ivDecoded);

          String retorno = decrypt(retornoEncriptado, dKey, novoIV);

          return retorno;
      }
      else
      {
          return responseFromServer;
      }
  } catch (NoSuchAlgorithmException | NoSuchPaddingException | InvalidKeyException | InvalidAlgorithmParameterException | IllegalBlockSizeException | BadPaddingException | InterruptedException | IOException ex) {
      Logger.getLogger(AnnaTemplateNotification.class.getName()).log(Level.SEVERE, null, ex);
      return "Erro";
  }

  $DecKey = "DECRYPTION_KEY";
  $EncKey = "ENCRYPTION_KEY";
  $Hash = "COMPANY_HASH";

  // Generate new IV
  $ivlen = openssl_cipher_iv_length('des-ede3-cbc');
  $IV = base64_encode(openssl_random_pseudo_bytes(8));

  $sentId = "NOTIFICATION_SENT_ID";
  $sentIdEncriptado = encrypt3DES($sentId, $EncKey, $IV);

  $dadosPost = array(
                      'HASH' => $Hash,
                      'ANNAEXEC' => $IV,
                      'SentId' => $sentIdEncriptado
  );

  $url = "https://YOUR_ANNA_URL/aannagetnotificationdata.aspx";
  $options = array(
      'http' => array(
          'header'  => "Content-type: application/x-www-form-urlencoded\r\n",
          'method'  => 'POST',
          'content' => http_build_query($dadosPost)
      )
  );
  $context  = stream_context_create($options);
  $result = file_get_contents($url, false, $context);

  if (str_contains($result, $IV)) {
      $novoIVEncriptado = substr($result, strpos($result, $IV));
      $novoIVEncriptado = str_replace($IV, "", $novoIVEncriptado);
      $retornoEncriptado = substr($result, 0, strrpos($result, $IV));

      $novoIV = decrypt3DES($novoIVEncriptado, $EncKey, $IV);

      $retorno = decrypt3DES($retornoEncriptado, $DecKey, $novoIV);

      echo $retorno;
  } else {
      echo $result;
  }

  &DecKey = !'DECRYPTION_KEY'
  &EncKey = !'ENCRYPTION_KEY'
  &Hash = !'COMPANY_HASH'

  // Generate new IV
  &CryptoEncrypt = new()
  &CryptoEncrypt.Algorithm = CryptoEncryptAlgorithm.TripleDES
  &Result = &CryptoEncrypt.Encrypt(!'DUMMY')
  &IV = &CryptoEncrypt.IV

  &CryptoEncrypt.Key = &EncKey
  &CryptoEncrypt.IV = &IV
  &SentId = !'1'
  &SentIdEncriptado = &CryptoEncrypt.Encrypt(&SentId)

  &HttpClient.AddVariable(!'HASH', &Hash)
  &HttpClient.AddVariable(!'ANNAEXEC', &IV)
  &HttpClient.AddVariable(!'SentId', &SentIdEncriptado)

  &Url = !'https://YOUR_ANNA_URL/aannagetnotificationdata.aspx'
  &HttpClient.AddHeader(!'ContentType', !'application/x-www-form-urlencoded')
  &HttpClient.Execute(!'POST', &Url)

  &Result = &HttpClient.ToString()

  If &Result.Contains(&IV)
    &NovoIVEncriptado = &Result.Substring(&Result.IndexOf(&IV))
    &NovoIVEncriptado = &NovoIVEncriptado.Replace(&IV, !'')
    &RetornoEncriptado = &Result.Substring(1, &Result.IndexOf(&IV) - 1)

    &CryptoEncrypt.Key = &EncKey
    &CryptoEncrypt.IV = &IV
    &NovoIV = &CryptoEncrypt.Decrypt(&NovoIVEncriptado)

    &CryptoEncrypt.Key = &DecKey
    &CryptoEncrypt.IV = &NovoIV
    &Retorno = &CryptoEncrypt.Decrypt(&RetornoEncriptado)

    Msg(&Retorno)
  Else
    Msg(&Result)
  Endif

  import requests
  import json
  from Crypto.Cipher import AES, DES3, DES
  from Crypto.Util.Padding import pad, unpad
  from Crypto.Random import get_random_bytes
  from base64 import b64encode, b64decode

  # Encryption method
  def encrypt(data, enckey, iv):

      enckey = b64decode(enckey)
      iv = b64decode(iv)

      cipher = DES3.new(enckey, DES3.MODE_CBC, iv)
      ct_bytes = cipher.encrypt(
          pad(bytes(data, encoding='utf-8'), DES3.block_size))
      ciphertext = b64encode(ct_bytes).decode('utf-8')

      return ciphertext


  # Decryption method
  def decrypt(data, deckey, iv):
      try:
          deckey = b64decode(deckey)
          iv = b64decode(iv)
          data = b64decode(data)

          cipher = DES3.new(deckey, DES3.MODE_CBC, iv)
          pt = unpad(cipher.decrypt(data), DES3.block_size)

          return pt.decode('utf-8')

      except (ValueError, KeyError):
          return 'Incorrect decryption'


  # Creating an IV
  key = get_random_bytes(8)
  cipher = DES.new(key, DES3.MODE_CBC)
  iv = b64encode(cipher.iv).decode('utf-8')

  # Integration variables
  hash = 'COMPANY_HASH'
  enckey = 'ENCRYPTION_KEY'
  deckey = 'DECRYPTION_KEY'
  url = 'https://YOUR_ANNA_URL/aannagetnotificationdata.aspx'
  requestId = 'NOTIFICATION_ID'

  # Encrypting data
  requestIdEncrypted = encrypt(requestId, enckey, iv)

  # Creating the submission structure
  request = {
      'HASH': hash,
      'ANNAEXEC': iv,
      'SentId': requestIdEncrypted
  }


  # Making a post for AnnA
  response = requests.post(url, request)

  # Retrieving AnnA's response
  response = response.text

  # Separating the received IV from the AnnA response string
  responseEncypted = response.split(iv)

  # Decrypting the new IV
  newIV = decrypt(responseEncypted[1], enckey, iv)

  # Decrypting the content of the reply
  responseDecrypt = decrypt(responseEncypted[0], deckey, newIV)

  # Log
  print('RequestId:', requestId)
  print('Retorno:\n', responseDecrypt)