{* ../../docs_src/security/tutorial001_an_py310.py hl[12] *}

Pero eso aún no es tan útil. Vamos a hacer que nos dé el usuario actual.

## Crear un modelo de usuario { #create-a-user-model }

Primero, vamos a crear un modelo de usuario con Pydantic.

De la misma manera que usamos Pydantic para declarar cuerpos, podemos usarlo en cualquier otra parte:

{* ../../docs_src/security/tutorial002_an_py310.py hl[5,12:6] *}

* `HTTPBasic` ve `HTTPBasicCredentials` import edin.
* `HTTPBasic` kullanarak bir "`security` scheme" oluşturun.
* *path operation*’ınızda bir dependency ile bu `security`’yi kullanın.
* Bu, `HTTPBasicCredentials` tipinde bir nesne döndürür:
    * İçinde gönderilen `username` ve `password` bulunur.

{* ../../docs_src/security/tutorial006_an_py310.py hl[4,8,12] *}

============

Keeping the project small and stable limits our ability to accept new contributors. We are not
seeking new committers at this time, but some small contributions are welcome.

If you've found a security problem, please follow our [bug bounty][security] program.

If you've found a bug, please contribute a failing test case so we can study and fix it.

If you have a new feature idea, please build it in an external library. There are

============

Keeping the project small and stable limits our ability to accept new contributors. We are not
seeking new committers at this time, but some small contributions are welcome.

If you've found a security problem, please follow our [bug bounty][security] program.

If you've found a bug, please contribute a failing test case so we can study and fix it.

If you have a new feature idea, please build it in an external library. There are

        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;

**FastAPI** будет знать, что может использовать класс `OAuth2PasswordBearer` (объявленный в зависимости) для определения схемы безопасности в OpenAPI, потому что он наследуется от `fastapi.security.oauth2.OAuth2`, который, в свою очередь, наследуется от `fastapi.security.base.SecurityBase`.

"docs_src/security/tutorial004_an_py310.py" = ["B904"]
"docs_src/security/tutorial004_an_py39.py" = ["B904"]
"docs_src/security/tutorial004_py310.py" = ["B904"]
"docs_src/security/tutorial004_py39.py" = ["B904"]
"docs_src/security/tutorial005_an_py310.py" = ["B904"]
"docs_src/security/tutorial005_an_py39.py" = ["B904"]
"docs_src/security/tutorial005_py310.py" = ["B904"]

- 匯入 `HTTPBasic` 與 `HTTPBasicCredentials`。
- 使用 `HTTPBasic` 建立一個「`security` scheme」。
- 在你的*路徑操作*中以依賴的方式使用該 `security`。
- 它會回傳一個 `HTTPBasicCredentials` 型別的物件：
    - 其中包含傳來的 `username` 與 `password`。

{* ../../docs_src/security/tutorial006_an_py310.py hl[4,8,12] *}

當你第一次嘗試開啟該 URL（或在文件中點擊 "Execute" 按鈕）時，瀏覽器會要求輸入你的使用者名稱與密碼：

<img src="/img/tutorial/security/image12.png">

## 檢查使用者名稱 { #check-the-username }

以下是一個更完整的範例。

Specific security vs. connectivity decisions are implemented by [ConnectionSpec](https://square.github.io/okhttp/5.x/okhttp/okhttp3/-connection-spec/). OkHttp includes four built-in connection specs:

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 { #get-your-own-user-data }

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