/**
     * Creates a new S3StorageClient instance.
     *
     * @param endpoint the S3 endpoint URL (null for AWS default)
     * @param accessKey the AWS access key
     * @param secretKey the AWS secret key
     * @param bucket the bucket name
     * @param region the AWS region
     */
    public S3StorageClient(final String endpoint, final String accessKey, final String secretKey, final String bucket,

可以看到如下用户界面：

<img src="https://fastapi.tiangolo.com/img/tutorial/security/image07.png">

用与上一章同样的方式实现应用授权。

使用如下凭证：

用户名: `johndoe` 密码: `secret`

/// check | 检查

注意，代码中没有明文密码**`secret`**，只保存了它的哈希值。

///

<img src="https://fastapi.tiangolo.com/img/tutorial/security/image08.png">

调用 `/users/me/` 端点，收到下面的响应：

```JSON
{
  "username": "johndoe",

if [ "${expected_checksum}" != "${got_checksum}" ]; then
	echo "BUG: decommission failed on encrypted objects: expected ${expected_checksum} got ${got_checksum}"
	exit 1
fi

./s3-check-md5 -versions -access-key minioadmin -secret-key minioadmin -endpoint http://127.0.0.1:9001/ -bucket versioned

   </ResponseMetadata>
</AssumeRoleWithCertificateResponse>
```

## Authentication Flow

A client can request temp. S3 credentials via the STS API. It can authenticate via a client certificate and obtain a access/secret key pair as well as a session token. These credentials are associated to an S3 policy at the MinIO server.

    /**
     * Access key for cloud storage authentication.
     * Used to authenticate with cloud storage services.
     */
    @Size(max = 1000)
    public String storageAccessKey;

    /**
     * Secret key for cloud storage authentication.
     * Used in conjunction with the access key for cloud storage.
     */
    @Size(max = 1000)
    public String storageSecretKey;

    /**

	defer store.unlock()

	secret, err := getTokenSigningKey()
	if err != nil {
		return err
	}

	var revoked bool
	for _, ui := range cache.iamSTSAccountsMap {
		if ui.Credentials.ParentUser != parentUser {
			continue
		}
		if tokenRevokeType != "" {
			claims, err := getClaimsFromTokenWithSecret(ui.Credentials.SessionToken, secret)
			if err != nil {

### Authentifizieren { #authenticate }

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">

### Authenticate { #authenticate }

Click the "Authorize" button.

Use the credentials:

User: `johndoe`

Password: `secret`

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

After authenticating in the system, you will see it like:

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

### Autenticar { #authenticate }

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">

 *
 * <p>This client requires the following initialization parameters:
 * <ul>
 *   <li>endpoint - The URL of the S3-compatible server</li>
 *   <li>accessKey - The access key for authentication</li>
 *   <li>secretKey - The secret key for authentication</li>
 *   <li>region - The AWS region (default: us-east-1)</li>
 *   <li>connectTimeout - Connection timeout in milliseconds (default: 10000)</li>