}
	metabytes, err = json.Marshal(metadata)
	if err != nil {
		return
	}
	return outbuf.Bytes(), metabytes, nil
}

// decrypt bucket metadata if kms is configured.
func decryptBucketMetadata(input []byte, bucket string, meta map[string]string, kmsContext kms.Context) ([]byte, error) {
	if GlobalKMS == nil {
		return nil, errKMSNotConfigured
	}
	keyID, kmsKey, sealedKey, err := crypto.S3.ParseMetadata(meta)