latencyBuckets: defaultLatencyBuckets,
		latency:        make([]atomic.Uint64, len(defaultLatencyBuckets)),
		conn: &StubKMS{
			KeyNames: []string{defaultKeyName},
		},
	}
}

// StubKMS is a KMS implementation for tests
type StubKMS struct {
	KeyNames []string
}

// Version returns the type of the KMS.
func (s StubKMS) Version(ctx context.Context) (string, error) {
	return "stub", nil
}

object storage resources are controlled via named IAM policies defined in the MinIO instance. Once authenticated via the STS API, the MinIO server applies one or more IAM policies to the generated credentials. MinIO's AssumeRoleWithWebIdentity implementation supports specifying IAM policies in two ways:

1. Role Policy (Recommended): When specified as part of the OpenID provider configuration, all users authenticating via this provider are authorized to (only) use the specified role policy....

		secretKey, err := globalSiteReplicatorCred.Get(GlobalContext)
		if err != nil {
			return "", err
		}
		return secretKey, nil
	}
	return secret, nil
}

// AssumeRole - implementation of AWS STS API AssumeRole to get temporary
// credentials for regular users on Minio.
// https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRole.html

	startTime := time.Now()
	source := getSource(2)
	return func(sz int64, err error) {
		globalTrace.Publish(sftpTrace(s, startTime, source, user, err, sz))
	}
}

// NewSFTPDriver initializes sftp.Handlers implementation of following interfaces
//
// - sftp.Fileread
// - sftp.Filewrite
// - sftp.Filelist
// - sftp.Filecmd
func NewSFTPDriver(perms *ssh.Permissions) sftp.Handlers {

}

// KMS is a connection to a key management system.
// It implements various cryptographic operations,
// like data key generation and decryption.
type KMS struct {
	// Type identifies the KMS implementation. Either,
	// MinKMS, MinKES or Builtin.
	Type Type

	// The default key, used for generating new data keys
	// if no explicit GenerateKeyRequest.Name is provided.
	DefaultKey string

```

### Certificate-based authentication

`--sftp=trusted-user-ca-key=...` specifies a file containing public key of certificate authority that is trusted
to sign user certificates for authentication.

Implementation is identical with "TrustedUserCAKeys" setting in OpenSSH server with exception that only one CA
key can be defined.

If a certificate is presented for authentication and has its signing CA key is in this file, then it may be

	encodedSuccessResponse := encodeResponse(response)

	// write success response.
	writeSuccessResponseXML(w, encodedSuccessResponse)
}

// ListBucketsHandler - GET Service.
// -----------
// This implementation of the GET operation returns a list of all buckets
// owned by the authenticated sender of the request.
func (api objectAPIHandlers) ListBucketsHandler(w http.ResponseWriter, r *http.Request) {

//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package jwt

// This file is a re-implementation of the original code here with some
// additional allocation tweaks reproduced using GODEBUG=allocfreetrace=1
// original file https://github.com/golang-jwt/jwt/blob/main/parser.go

		return errXLBackend
	}

	return nil
}

// A single function to write certain errors to be fatal
// or informative based on the `exit` flag, please look
// at each implementation of error for added hints.
//
// FIXME: This is an unusual function but serves its purpose for
// now, need to revisit the overall erroring structure here.
// Do not like it :-(

//   - connection to a "local" KMS implementation using a static key if the
//     "MINIO_KMS_SECRET_KEY" or "MINIO_KMS_SECRET_KEY_FILE" is present.
//
// It returns an error if connecting to the KMS implementation fails,
// e.g. due to incomplete config, or when configurations for multiple
// KMS implementations are present.
func Connect(ctx context.Context, opts *ConnectionOptions) (*KMS, error) {