Em muitos frameworks e sistemas, apenas lidar com segurança e autenticação exige muito esforço e código (em muitos casos isso pode ser 50% ou mais de todo o código escrito).

**FastAPI** tem muitas ferramentas para ajudar você com a parte de **Segurança** facilmente, rapidamente, de uma forma padrão, sem ter que estudar e aprender tudo sobre especificações de segurança.

Mas primeiro, vamos verificar alguns pequenos conceitos.

## Está com pressa? { #in-a-hurry }

///

/// note | Starlette Technical Details

**FastAPI**'s `UploadFile` inherits directly from **Starlette**'s `UploadFile`, but adds some necessary parts to make it compatible with **Pydantic** and the other parts of FastAPI.

///

## What is "Form Data" { #what-is-form-data }

BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY ## KIND, either express or implied. See the License for the ## specific language governing permissions and limitations ## under the License. ## This software bundles the following NOTICE files from third party library providers: META-INF/NOTICE in archive lib/guice-5.1.0.jar Google Guice - Core Library Copyright 2006-2022 Google, Inc. This product includes software developed at The Apache Software Foundation (http://www.apache.org/). META-INF/NOTICE in archive...

	e := json.NewEncoder(&bytesBuffer)
	e.Encode(response)
	return bytesBuffer.Bytes()
}

// Write parts count
func setPartsCountHeaders(w http.ResponseWriter, objInfo ObjectInfo) {
	if strings.Contains(objInfo.ETag, "-") && len(objInfo.Parts) > 0 {
		w.Header()[xhttp.AmzMpPartsCount] = []string{strconv.Itoa(len(objInfo.Parts))}
	}
}

// Write object header

    You could have custom internal logic to separate it by colon characters (`:`) or
    similar, and get the two parts `items` and `read`. Many applications do that to
    group and organize permissions, you could do it as well in your application, just
    know that that it is application specific, it's not part of the specification.
    """

    def __init__(
        self,
        *,
        grant_type: Annotated[

	MinIOSnowballPrefix = "X-Amz-Meta-Minio-Snowball-Prefix"

	// Object lock enabled
	AmzObjectLockEnabled = "x-amz-bucket-object-lock-enabled"

	// Multipart parts count
	AmzMpPartsCount = "x-amz-mp-parts-count"

	// Object date/time of expiration
	AmzExpiration = "x-amz-expiration"

	// Dummy putBucketACL
	AmzACL = "x-amz-acl"

	// Signature V4 related constants.

sections when you distribute them as separate works.  But when you
distribute the same sections as part of a whole which is a work based
on the Library, the distribution of the whole must be on the terms of
this License, whose permissions for other licensees extend to the
entire whole, and thus to each and every part regardless of who wrote
it.

Thus, it is not the intent of this section to claim rights or contest

		}
		if calcPartInfo.ETag != expectedETaghex {
			t.Errorf("MD5 Mismatch")
		}
		completedParts.Parts = append(completedParts.Parts, CompletePart{
			PartNumber: i,
			ETag:       calcPartInfo.ETag,
		})
	}
	objInfo, err := obj.CompleteMultipartUpload(context.Background(), "bucket", "key", uploadID, completedParts.Parts, ObjectOptions{})
	if err != nil {
		t.Fatalf("%s: <ERROR> %s", instanceType, err)
	}

var errUploadIDNotFound = errors.New("Specified Upload ID is not found")

// error returned when PartNumber is greater than the maximum allowed 10000 parts
var errInvalidMaxParts = errors.New("Part number is greater than the maximum allowed 10000 parts")

// error returned for session policies > 2048
var errSessionPolicyTooLarge = errors.New("Session policy should not exceed 2048 characters")

          the Derivative Works; and

      (d) If the Work includes a "NOTICE" text file as part of its
          distribution, then any Derivative Works that You distribute must
          include a readable copy of the attribution notices contained
          within such NOTICE file, excluding those notices that do not
          pertain to any part of the Derivative Works, in at least one