byte[] testGuid = new byte[16];
        for (int i = 0; i < 16; i++) {
            testGuid[i] = (byte) (i + 1);
        }
        System.arraycopy(testGuid, 0, buffer, bufferIndex + 4, 16);

        // Set security mode (2 bytes)
        int testSecurityMode = 0x0003;
        SMBUtil.writeInt2(testSecurityMode, buffer, bufferIndex + 20);

        // Set dialect (2 bytes)
        int testDialect = 0x0311;

        byte[] buffer = createBasicNegotiateResponseBuffer();

        // Add a small security buffer at a safe offset (after the fixed structure)
        SMBUtil.writeInt2(64, buffer, 56); // Security buffer offset (relative to header start)
        SMBUtil.writeInt2(8, buffer, 58); // Security buffer length

        // Add some dummy security data at offset 64 from start
        buffer[64] = (byte) 0x4E; // NTLMSSP signature start

import com.google.android.gms.security.ProviderInstaller
import com.squareup.moshi.Moshi
import com.squareup.moshi.kotlin.reflect.KotlinJsonAdapterFactory
import java.io.IOException
import java.net.InetAddress
import java.net.UnknownHostException
import java.security.KeyStore
import java.security.SecureRandom
import java.security.Security
import java.security.cert.Certificate

{* ../../docs_src/security/tutorial002.py hl[25] *}

## 🤚 👩‍💻

`get_current_user` 🔜 ⚙️ (❌) 🚙 🔢 👥 ✍, 👈 ✊ 🤝 `str` & 📨 👆 Pydantic `User` 🏷:

{* ../../docs_src/security/tutorial002.py hl[19:22,26:27] *}

## 💉 ⏮️ 👩‍💻

🔜 👥 💪 ⚙️ 🎏 `Depends` ⏮️ 👆 `get_current_user` *➡ 🛠️*:

{* ../../docs_src/security/tutorial002.py hl[31] *}

Klicken Sie auf den Button „Authorize“.

Verwenden Sie die Anmeldedaten:

Benutzer: `johndoe`

Passwort: `secret`.

<img src="/img/tutorial/security/image04.png">

Nach der Authentifizierung im System sehen Sie Folgendes:

<img src="/img/tutorial/security/image05.png">

### Die eigenen Benutzerdaten ansehen

Verwenden Sie nun die Operation `GET` mit dem Pfad `/users/me`.

Sie erhalten Ihre Benutzerdaten:

✍ 🔢 👔 🤝.

🔬 Pydantic 🏷 👈 🔜 ⚙️ 🤝 🔗 📨.

✍ 🚙 🔢 🏗 🆕 🔐 🤝.

{* ../../docs_src/security/tutorial004.py hl[6,12:14,28:30,78:86] *}

## ℹ 🔗

ℹ `get_current_user` 📨 🎏 🤝 ⏭, ✋️ 👉 🕰, ⚙️ 🥙 🤝.

🔣 📨 🤝, ✔ ⚫️, & 📨 ⏮️ 👩‍💻.

🚥 🤝 ❌, 📨 🇺🇸🔍 ❌ ▶️️ ↖️.

{* ../../docs_src/security/tutorial004.py hl[89:106] *}

## ℹ `/token` *➡ 🛠️*

✍ `timedelta` ⏮️ 👔 🕰 🤝.

Haz clic en el botón "Authorize".

Usa las credenciales:

Usuario: `johndoe`

Contraseña: `secret`

<img src="/img/tutorial/security/image04.png">

Después de autenticarte en el sistema, lo verás así:

<img src="/img/tutorial/security/image05.png">

### Obtener tus propios datos de usuario

Ahora usa la operación `GET` con la path `/users/me`.

Obtendrás los datos de tu usuario, como:

# Advanced Security { #advanced-security }

## Additional Features { #additional-features }

There are some extra features to handle security apart from the ones covered in the [Tutorial - User Guide: Security](../../tutorial/security/index.md){.internal-link target=_blank}.

/// tip

The next sections are **not necessarily "advanced"**.

And it's possible that for your use case, the solution is in one of them.

///

blank_issues_enabled: false
contact_links:
  - name: Security Contact
    about: Please report security vulnerabilities to security@tiangolo.com
  - name: Question or Problem
    about: Ask a question or ask about a problem in GitHub Discussions.
    url: https://github.com/fastapi/fastapi/discussions/categories/questions
  - name: Feature Request

## Simple HTTP Basic Auth

* Importa `HTTPBasic` y `HTTPBasicCredentials`.
* Crea un "esquema de `security`" usando `HTTPBasic`.
* Usa ese `security` con una dependencia en tu *path operation*.
* Devuelve un objeto de tipo `HTTPBasicCredentials`:
  * Contiene el `username` y `password` enviados.

{* ../../docs_src/security/tutorial006_an_py39.py hl[4,8,12] *}