/**
     * The checksum algorithm.
     */
    interface ChecksumAlgorithm {
        /**
         * Returns the algorithm name, usually used as key, never {@code null} value. The name is a standard name of
         * algorithm (if applicable) or any other designator that is algorithm commonly referred with. Example: "SHA-1".
         */
        @Nonnull

		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrKMSNotConfigured), r.URL)
		return
	}
	kmsKey := encConfig.KeyID()
	if kmsKey != "" {
		kmsContext := kms.Context{"MinIO admin API": "ServerInfoHandler"} // Context for a test key operation
		_, err := GlobalKMS.GenerateKey(ctx, &kms.GenerateKeyRequest{Name: kmsKey, AssociatedData: kmsContext})
		if err != nil {
			if errors.Is(err, kes.ErrKeyNotFound) {

					CalculatedSHA256: hex.EncodeToString(sum),
				}
			}
		}
		if r.contentHasher != nil {
			if r.contentHash.Type.Trailing() {
				var err error
				r.contentHash.Encoded = r.trailer.Get(r.contentHash.Type.Key())
				r.contentHash.Raw, err = base64.StdEncoding.DecodeString(r.contentHash.Encoded)
				if err != nil || len(r.contentHash.Raw) == 0 {
					return 0, ChecksumMismatch{Got: r.contentHash.Encoded}
				}
			}

- Objects must not have conflicting objects as parent objects, applications using this behavior should change their behavior and use non-conflicting unique keys, for example situations such as following conflicting key patterns are not supported.

```
PUT <bucketname>/a/b/1.txt
PUT <bucketname>/a/b
```

```
PUT <bucketname>/a/b
PUT <bucketname>/a/b/1.txt

			locationResponse:   []byte(""),
			errorResponse: APIErrorResponse{
				Resource: SlashSeparator + bucketName + SlashSeparator,
				Code:     "InvalidAccessKeyId",
				Message:  "The Access Key Id you provided does not exist in our records.",
			},
			shouldPass: false,
		},
	}

	for i, testCase := range testCases {
		if i != 1 {
			continue
		}

By using them, you can take advantage of all these standard-based tools, including these interactive documentation systems.

OpenAPI defines the following security schemes:

* `apiKey`: an application specific key that can come from:
    * A query parameter.
    * A header.
    * A cookie.
* `http`: standard HTTP authentication systems, including:

/// tip | 提示

有些编辑器会检查代码中没使用过的函数参数，并显示错误提示。

在*路径操作装饰器*中使用 `dependencies` 参数，可以确保在执行依赖项的同时，避免编辑器显示错误提示。

使用路径装饰器依赖项还可以避免开发新人误会代码中包含无用的未使用参数。

///

/// info | 说明

本例中，使用的是自定义响应头 `X-Key` 和 `X-Token`。

但实际开发中，尤其是在实现安全措施时，最好使用 FastAPI 内置的[安全工具](../security/index.md){.internal-link target=_blank}（详见下一章）。

///

## 依赖项错误和返回值

路径装饰器依赖项也可以使用普通的依赖项*函数*。

### 依赖项的需求项

options:
  ftp: # settings for MinIO to act as an ftp server
    address: ":8021"
    passive-port-range: "30000-40000"
  sftp: # settings for MinIO to act as an sftp server
    address: ":8022"
    ssh-private-key: "/home/user/.ssh/id_rsa"
```

If you are using the config `v1` YAML you should migrate your `pools:` field values to the following format

`v1` format
```yaml
pools: # Specify the nodes and drives with pools
  -

func (x *xlMetaV2) findVersionStr(key string) (idx int, ver *xlMetaV2Version, err error) {
	if key == nullVersionID {
		key = ""
	}
	var u uuid.UUID
	if key != "" {
		u, err = uuid.Parse(key)
		if err != nil {
			return -1, nil, errFileVersionNotFound
		}
	}
	return x.findVersion(u)
}

func (x *xlMetaV2) findVersion(key [16]byte) (idx int, ver *xlMetaV2Version, err error) {

				return "", errNoSuchUser
			}
		}
		return res.NormDN, nil
	default:
		return "", errIAMActionNotAllowed
	}
}

// guessUserProvider - guesses the user provider based on the access key and claims.
func guessUserProvider(credentials auth.Credentials) string {
	if !credentials.IsServiceAccount() && !credentials.IsTemp() {
		return madmin.BuiltinProvider // regular users are always internal
	}