conn conn // Connection to the KMS

	// Metrics
	reqOK, reqErr, reqFail atomic.Uint64
	latencyBuckets         []time.Duration // expected to be sorted
	latency                []atomic.Uint64
}

// Version returns version information about the KMS.
//
// TODO(aead): refactor this API call since it does not account
// for multiple KMS/KES servers.
func (k *KMS) Version(ctx context.Context) (string, error) {

// on success. If the metadata contains both, a KMS master key ID and a sealed
// KMS data key it returns both. If the metadata does not contain neither a
// KMS master key ID nor a sealed KMS data key it returns an empty keyID and
// KMS data key. Otherwise, it returns an error.
func (ssekms) ParseMetadata(metadata map[string]string) (keyID string, kmsKey []byte, sealedKey SealedKey, ctx kms.Context, err error) {
	// Extract all required values from object metadata

	"github.com/minio/minio/internal/logger"
	"github.com/minio/mux"
)

const (
	kmsPathPrefix       = minioReservedBucketPath + "/kms"
	kmsAPIVersion       = "v1"
	kmsAPIVersionPrefix = SlashSeparator + kmsAPIVersion
)

type kmsAPIHandlers struct{}

// registerKMSRouter - Registers KMS APIs
func registerKMSRouter(router *mux.Router) {
	kmsAPI := kmsAPIHandlers{}
	kmsRouter := router.PathPrefix(kmsPathPrefix).Subrouter()

	kmsKeyStatusPath = kmsURL + "/key/status"

	// Admin API paths
	// For example: /minio/admin/v3/kms/status
	adminURL              = adminPathPrefix + adminAPIVersionPrefix
	kmsAdminStatusPath    = adminURL + "/kms/status"
	kmsAdminKeyStatusPath = adminURL + "/kms/key/status"
	kmsAdminKeyCreate     = adminURL + "/kms/key/create"
)

const (
	userAccessKey = "miniofakeuseraccesskey"
	userSecretKey = "miniofakeusersecret"
)

		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrAccessDenied), r.URL)
		return
	}

	kmsContext := kms.Context{"MinIO admin API": "KMSKeyStatusHandler"} // Context for a test key operation
	// 1. Generate a new key using the KMS.
	key, err := GlobalKMS.GenerateKey(ctx, &kms.GenerateKeyRequest{Name: keyID, AssociatedData: kmsContext})
	if err != nil {
		response.EncryptionErr = err.Error()

# sleep for replication to complete
sleep 30

# Create bucket in source cluster
echo "Create bucket in source MinIO instance"
./mc mb minio1/test-bucket --insecure

# Enable SSE KMS for the bucket
./mc encrypt set sse-kms minio-default-key minio1/test-bucket --insecure

# Load objects to source site
echo "Loading objects to source MinIO instance"
./mc cp /tmp/data/encrypted minio1/test-bucket --insecure

         "Principal":"*",
         "Action":"s3:PutObject",
         "Resource":"arn:aws:s3:::multi-key-poc/*",
         "Condition":{
            "Null":{
               "s3:x-amz-server-side-encryption-aws-kms-key-id":"true"
            }
         }
      }
   ]

         "Principal":"*",
         "Action":"s3:PutObject",
         "Resource":"arn:aws:s3:::multi-key-poc/*",
         "Condition":{
            "StringNotEquals":{
               "s3:x-amz-server-side-encryption-aws-kms-key-id":"minio-default-key"
            }
         }
      }
   ]

	"github.com/minio/minio/internal/kms"
	"github.com/secure-io/sio-go"
	"github.com/secure-io/sio-go/sioutil"
)

// EncryptBytes encrypts the plaintext with a key managed by KMS.
// The context is bound to the returned ciphertext.
//
// The same context must be provided when decrypting the
// ciphertext.
func EncryptBytes(k *kms.KMS, plaintext []byte, context kms.Context) ([]byte, error) {

More details about supported KMS implementations and configuration can be found at the [KMS guide](https://github.com/minio/minio/blob/master/docs/kms/README.md).