if (failOnRefresh) {
                throw new CIFSException("refresh failed");
            }
        }

        // ----- Credentials (super-interface) -----

        @Override
        public <T extends Credentials> T unwrap(Class<T> type) {
            if (type == null) {
                throw new NullPointerException("type");
            }
            if (type.isInstance(this)) {

   to use a memory-hard function (Argon2) that (on purpose) consumes a lot of memory and CPU.
   The new KMS-based approach can use a key derivation function that is orders of magnitudes
   cheaper w.r.t. memory and CPU.
- Root credentials can now be changed easily. Before, a two-step process was required to
   change the cluster root credentials since they were used to en/decrypt the IAM data.

        System.arraycopy(clientChallenge, 0, response, 16, 8);
        return response;
    }

    /**
     * Generate the Unicode MD4 hash for the password associated with these credentials.
     *
     * @param password the password to hash
     * @param challenge the server challenge bytes
     * @return the calculated response
     * @throws GeneralSecurityException if a cryptographic error occurs

			if u.Credentials.IsTemp() {
				// We should delete such that the client can re-request
				// for the expiring credentials.
				deleteKeyEtcd(ctx, ies.client, getUserIdentityPath(user, userType))
				deleteKeyEtcd(ctx, ies.client, getMappedPolicyPath(user, userType, false))
			}
			return nil
		}
		u.Credentials.Claims = jwtClaims.Map()
	}
	if u.Credentials.Description == "" {

     */
    protected static final String ACCESS_CONTROL_ALLOW_PRIVATE_NETWORK = "Access-Control-Allow-Private-Network";

    /**
     * CORS header for allowing credentials.
     */
    protected static final String ACCESS_CONTROL_ALLOW_CREDENTIALS = "Access-Control-Allow-Credentials";

    /**
     * CORS header for specifying cache duration for preflight requests.
     */

![Example-3](https://github.com/minio/minio/blob/master/docs/screenshots/Example-3.jpg?raw=true)

**Note**: On distributed systems, root credentials are recommend to be defined by exporting the `MINIO_ROOT_USER` and  `MINIO_ROOT_PASSWORD` environment variables. If no value is set MinIO setup will assume `minioadmin/minioadmin` as default credentials. If a domain is required, it must be specified by defining and exporting the `MINIO_DOMAIN` environment variable.

	"net/http"
	"net/url"
	"strconv"
	"strings"
	"time"

	"github.com/klauspost/compress/gzhttp"
	"github.com/lithammer/shortuuid/v4"
	miniogo "github.com/minio/minio-go/v7"
	"github.com/minio/minio-go/v7/pkg/credentials"
	"github.com/minio/mux"
	"github.com/minio/pkg/v3/policy"

	"github.com/minio/minio/internal/auth"
	levent "github.com/minio/minio/internal/config/lambda/event"
	"github.com/minio/minio/internal/hash/sha256"

        // Use a fresh context to avoid affecting previous tests
        CIFSContext ctx2 = mock(CIFSContext.class);
        Configuration config2 = mock(Configuration.class);
        Credentials creds2 = mock(Credentials.class);
        NameServiceClient nsc2 = mock(NameServiceClient.class);
        when(ctx2.getConfig()).thenReturn(config2);
        when(ctx2.getCredentials()).thenReturn(creds2);

                                 endpoint_url='http://localhost:9000',
                                 aws_access_key_id=response['Credentials']['AccessKeyId'],
                                 aws_secret_access_key=response['Credentials']['SecretAccessKey'],
                                 aws_session_token=response['Credentials']['SessionToken'],
                                 config=Config(signature_version='s3v4'),

| user               | string                                  | Identifier for owner of requested credentials          |
| maxValiditySeconds | integer (>= 900 seconds and < 365 days) | Maximum allowed expiry duration for the credentials    |
| claims             | key-value pairs                         | Claims to be associated with the requested credentials |