MetaSealedKeyKMS = "X-Minio-Internal-Server-Side-Encryption-Kms-Sealed-Key"

	// MetaKeyID is the KMS master key ID used to generate/encrypt the data
	// encryption key (DEK).
	MetaKeyID = "X-Minio-Internal-Server-Side-Encryption-S3-Kms-Key-Id"
	// MetaDataEncryptionKey is the sealed data encryption key (DEK) received from
	// the KMS.

		return
	}

	// Return error if KMS is not initialized
	if GlobalKMS == nil {
		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrKMSNotConfigured), r.URL)
		return
	}
	kmsKey := encConfig.KeyID()
	if kmsKey != "" {
		kmsContext := kms.Context{"MinIO admin API": "ServerInfoHandler"} // Context for a test key operation
		_, err := GlobalKMS.GenerateKey(ctx, &kms.GenerateKeyRequest{Name: kmsKey, AssociatedData: kmsContext})

//     -   ObjectKey := DAREv2_Dec(KeyEncKey, SealedKey)
//     - object_data := DAREv2_Dec(ObjectKey, enc_object_data)
//     Output: object_data
//
// ### SSE-S3 and KMS
//
// SSE-S3 requires that the KMS provides two functions:
//
//  1. Generate(KeyID) -> (Key, EncKey)
//
//  2. Unseal(KeyID, EncKey) -> Key
//
//  1. Encrypt:
//     Input: KeyID, bucket, object, metadata, object_data

		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})
	}
	if err != nil && !errors.Is(err, kms.ErrKeyExists) && !errors.Is(err, kms.ErrPermission) {
		logger.Fatal(err, "Failed to connect to KMS")
	}
	GlobalKMS = KMS
}

func (b *BucketSSEConfig) Algo() Algorithm {
	for _, rule := range b.Rules {
		return rule.DefaultEncryptionAction.Algorithm
	}
	return ""
}

// KeyID returns the KMS key ID specified by the SSE configuration.
// If the SSE configuration does not specify SSE-KMS it returns an
// empty key ID.
func (b *BucketSSEConfig) KeyID() string {
	for _, rule := range b.Rules {

	"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

	}
	if err != nil {
		logger.Fatal(err, "Unable to generate root access key using KMS")
	}

	sKey, err := GlobalKMS.MAC(GlobalContext, &kms.MACRequest{Message: []byte("root secret key")})
	if err != nil {
		// Here, we must have permission. Otherwise, we would have failed earlier.
		logger.Fatal(err, "Unable to generate root secret key using KMS")
	}

	accessKey, err := auth.GenerateAccessKey(20, bytes.NewReader(aKey))

	encBytes, metaBytes, err := encryptBucketMetadata(ctx, b.Name, b.BucketTargetsConfigJSON, kms.Context{b.Name: b.Name, bucketTargetsFile: bucketTargetsFile})
	if err != nil {
		return err
	}

	b.BucketTargetsConfigJSON = encBytes
	b.BucketTargetsConfigMetaJSON = metaBytes
	return b.Save(ctx, objectAPI)
}

// encrypt bucket metadata if kms is configured.

	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 ...interface{}) {
	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.