Function parseKeyFormatAndType

lib/internal/crypto/keys.js:397–441

(enc, keyType, isPublic, objName)

}

function parseKeyFormatAndType(enc, keyType, isPublic, objName) {
  const { format: formatStr, type: typeStr } = enc;

  const isInput = keyType === undefined;
  const format = parseKeyFormat(formatStr,
                                isInput ? kKeyFormatPEM : undefined,
                                option('format', objName));

  if (format === kKeyFormatRawPublic) {
    if (isPublic === false) {
      throw new ERR_INVALID_ARG_VALUE(option('format', objName), 'raw-public');
    }
    let type;
    if (typeStr === undefined || typeStr === 'uncompressed') {
      type = POINT_CONVERSION_UNCOMPRESSED;
    } else if (typeStr === 'compressed') {
      type = POINT_CONVERSION_COMPRESSED;
    } else {
      throw new ERR_INVALID_ARG_VALUE(option('type', objName), typeStr);
    }
    return { format, type };
  }

  if (format === kKeyFormatRawPrivate || format === kKeyFormatRawSeed) {
    if (isPublic === true) {
      throw new ERR_INVALID_ARG_VALUE(
        option('format', objName),
        format === kKeyFormatRawPrivate ? 'raw-private' : 'raw-seed');
    }
    if (typeStr !== undefined) {
      throw new ERR_INVALID_ARG_VALUE(option('type', objName), typeStr);
    }
    return { format };
  }

  const isRequired = (!isInput ||
                      format === kKeyFormatDER) &&
                      format !== kKeyFormatJWK;
  const type = parseKeyType(typeStr,
                            isRequired,
                            keyType,
                            isPublic,
                            option('type', objName));
  return { format, type };
}

function isStringOrBuffer(val) {
  return typeof val === 'string' ||