- All sites must be using the **same** external IDP(s) if any.
- For [SSE-S3 or SSE-KMS encryption via KMS](https://docs.min.io/community/minio-object-store/operations/server-side-encryption.html "MinIO KMS Guide"), all sites **must**  have access to a central KMS deployment. This can be achieved via a central KES server or multiple KES servers (say one per site) connected via a central KMS (Vault) server.

## Configuring Site Replication

| [AWS-KMS + SecretsManager](https://github.com/minio/kes/wiki/AWS-SecretsManager)             | Cloud KMS. MinIO in combination with a managed KMS installation   |
| [Gemalto KeySecure /Thales CipherTrust](https://github.com/minio/kes/wiki/Gemalto-KeySecure) | Local KMS. MinIO and KMS On-Premises.                             |

false, ModTime: UTCNow(), Size: 3430, Mode: 0x0, Metadata: map[string]string{"X-Minio-Internal-Server-Side-Encryption-Iv": "jIJPsrkkVYYMvc7edBrNl+7zcM7+ZwXqMb/YAjBO/ck=", "X-Minio-Internal-Server-Side-Encryption-S3-Kms-Key-Id": "my-minio-key", "X-Minio-Internal-Server-Side-Encryption-S3-Kms-Sealed-Key": "IAAfAP2p7ZLv3UpLwBnsKkF2mtWba0qoY42tymK0szRgGvAxBNcXyHXYooe9dQpeeEJWgKUa/8R61oCy1mFwIg==", "X-Minio-Internal-Server-Side-Encryption-S3-Sealed-Key": "IAAfAPFYRDkHVirJBJxBixNj3PLWt78dFuUTyTLIdLG820J7...

	"github.com/minio/minio/internal/kms"
	"github.com/minio/pkg/v3/env"
	"github.com/minio/pkg/v3/workers"
)

// keyrotate:
//   apiVersion: v1
//   bucket: BUCKET
//   prefix: PREFIX
//   encryption:
//     type: sse-s3 # valid values are sse-s3 and sse-kms
//     key: <new-kms-key> # valid only for sse-kms
//     context: <new-kms-key-context> # valid only for sse-kms
// # optional flags based filtering criteria

	}

	KMS, err := kms.Connect(GlobalContext, &kms.ConnectionOptions{
		CADir: globalCertsCADir.Get(),
	})
	if err != nil {
		logger.Fatal(err, "Failed to connect to KMS")
	}

	if _, err = KMS.GenerateKey(GlobalContext, &kms.GenerateKeyRequest{}); errors.Is(err, kms.ErrKeyNotFound) {
		err = KMS.CreateKey(GlobalContext, &kms.CreateKeyRequest{Name: KMS.DefaultKey})
	}

	errKMSNotConfigured               = errors.New("KMS not configured for a server side encrypted objects")
	errKMSKeyNotFound                 = errors.New("Unknown KMS key ID")
	errKMSDefaultKeyAlreadyConfigured = errors.New("A default encryption already exists on KMS")
	// Additional MinIO errors for SSE-C requests.

	"github.com/minio/minio/internal/crypto"
	"github.com/minio/minio/internal/hash"
	xhttp "github.com/minio/minio/internal/http"
	"github.com/minio/minio/internal/kms"
)

type fanOutOptions struct {
	Kind     crypto.Type
	KeyID    string
	Key      []byte
	KmsCtx   kms.Context
	Checksum *hash.Checksum
	MD5Hex   string
}

// fanOutPutObject takes an input source reader and fans out multiple PUT operations

	logger.LogIf(ctx, "kms", err, errKind...)
}

// KMSLogger permits access to kms module specific logging
type KMSLogger struct{}

// LogOnceIf is the implementation of LogOnceIf, accessible using the Logger interface
func (l KMSLogger) LogOnceIf(ctx context.Context, err error, id string, errKind ...any) {
	logger.LogOnceIf(ctx, "kms", err, id, errKind...)
}

	"errors"
	"fmt"
	"path"
	"sort"
	"strings"

	jsoniter "github.com/json-iterator/go"
	"github.com/minio/madmin-go/v3"
	"github.com/minio/minio/internal/config"
	"github.com/minio/minio/internal/kms"
)

const (
	minioConfigPrefix = "config"
	minioConfigBucket = minioMetaBucket + SlashSeparator + minioConfigPrefix
	kvPrefix          = ".kv"

	// Captures all the previous SetKV operations and allows rollback.

}

// configReader returns a PutObjReader and ObjectOptions needed to save config
// using a PutObject API. PutObjReader encrypts json encoded tier configurations
// if KMS is enabled, otherwise simply yields the json encoded bytes as is.
// Similarly, ObjectOptions value depends on KMS' status.
func (config *TierConfigMgr) configReader(ctx context.Context) (*PutObjReader, *ObjectOptions, error) {
	b, err := config.Bytes()
	if err != nil {