// Sign signs all top level roles in a repo in the appropriate order func Sign(repo *tuf.Repo) (root, targets, snapshot, timestamp *data.Signed, err error) { root, err = repo.SignRoot(data.DefaultExpires("root"), nil) if err != nil { return nil, nil, nil, nil, err } targets, err = repo.SignTargets("targets", data.DefaultExpires("targets"), nil) if err != nil { return nil, nil, nil, nil, err } snapshot, err = repo.SignSnapshot(data.DefaultExpires("snapshot"), nil) if err != nil { return nil, nil, nil, nil, err } timestamp, err = repo.SignTimestamp(data.DefaultExpires("timestamp"), nil) if err != nil { return nil, nil, nil, nil, err } return }