func (db *DB) Verify(s *data.Signed, role string, minVersion int64) error {

	err := db.VerifyIgnoreExpiredCheck(s, role, minVersion)

	if err != nil {
		return err
	}

	sm := &signedMeta{}
	if err := json.Unmarshal(s.Signed, sm); err != nil {
		return err
	}

	if IsExpired(sm.Expires) {
		return ErrExpired{sm.Expires}
	}

	return nil
}
The software does not validate or incorrectly validates the integrity check values or "checksums" of a message. This may prevent it from detecting if the data has been modified or corrupted in transmission.