}
	return &KMS{
		Type:       Builtin,
		DefaultKey: keyID,
		conn: secretKey{
			keyID: keyID,
			key:   key,
		},
		latencyBuckets: defaultLatencyBuckets,
		latency:        make([]atomic.Uint64, len(defaultLatencyBuckets)),
	}, nil
}

// secretKey is a KMS implementation that derives new DEKs
// from a single key.
type secretKey struct {
	keyID string
	key   []byte
}

		}
	}
}

var decryptKeyTests = []struct {
	KeyID      string
	Plaintext  string
	Ciphertext string
	Context    Context
}{
	{
		KeyID:      "my-key",
		Plaintext:  "zmS7NrG765UZ0ZN85oPjybelxqVvpz01vxsSpOISy2M=",

		Version         = 1
	)
	var (
		header [5]byte
		buffer bytes.Buffer
	)
	json := jsoniter.ConfigCompatibleWithStandardLibrary
	metadata, err := json.Marshal(encryptedObject{
		KeyID:     key.KeyID,
		KMSKey:    key.Ciphertext,
		Algorithm: algorithm,
		Nonce:     nonce,
	})
	if err != nil {
		return nil, err
	}
	if len(metadata) > MaxMetadataSize {

	SSEDAREPackageMetaSize = 32 // 32 bytes

)

// KMSKeyID returns in AWS compatible KMS KeyID() format.
func (o *ObjectInfo) KMSKeyID() string { return kmsKeyIDFromMetadata(o.UserDefined) }

// KMSKeyID returns in AWS compatible KMS KeyID() format.
func (o *MultipartInfo) KMSKeyID() string { return kmsKeyIDFromMetadata(o.UserDefined) }

	"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

		pkey, err := key.DecodePublicKey()
		if err != nil {
			return err
		}
		pk.add(key.Kid, pkey)
	}

	return nil
}

func (pk *publicKeys) add(keyID string, key any) {
	pk.Lock()
	defer pk.Unlock()

	pk.pkMap[keyID] = key
}

func (pk *publicKeys) get(kid string) any {
	pk.RLock()
	defer pk.RUnlock()
	return pk.pkMap[kid]
}

	if GlobalKMS == nil {
		return nil, errKMSNotConfigured
	}
	keyID, kmsKey, sealedKey, err := crypto.S3.ParseMetadata(meta)
	if err != nil {
		return nil, err
	}
	extKey, err := GlobalKMS.Decrypt(context.TODO(), &kms.DecryptRequest{
		Name:           keyID,
		Ciphertext:     kmsKey,
		AssociatedData: kmsContext,
	})
	if err != nil {
		return nil, err
	}

	// ErrInvalidEncryptionKeyID returns error when KMS key id contains invalid characters
	ErrInvalidEncryptionKeyID = Errorf("KMS KeyID contains unsupported characters")
)

var (
	errMissingInternalIV            = Errorf("The object metadata is missing the internal encryption IV")

	}

	if GlobalKMS == nil {
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrKMSNotConfigured), r.URL)
		return
	}

	keyID := r.Form.Get("key-id")
	if keyID == "" {
		keyID = GlobalKMS.DefaultKey
	}
	response := madmin.KMSKeyStatus{
		KeyID: keyID,
	}

	kmsContext := kms.Context{"MinIO admin API": "KMSKeyStatusHandler"} // Context for a test key operation

		metadata = make(map[string]string)
	}

	etag := strings.TrimSpace(hdr.Get(xhttp.MinIOSourceETag))
	if crypto.S3KMS.IsRequested(hdr) {
		keyID, context, err := crypto.S3KMS.ParseHTTP(hdr)
		if err != nil {
			return ObjectOptions{}, err
		}
		sseKms, err := encrypt.NewSSEKMS(keyID, context)
		if err != nil {
			return ObjectOptions{}, err
		}
		op := ObjectOptions{
			ServerSideEncryption: sseKms,