You don't even need to roll your own solution with memfd. Linux already has keyrings[1] as a kernel concept. [1]: https://man7.org/linux/man-pages/man7/keyring

You don't even need to roll your own solution with memfd. Linux already has keyrings[1] as a kernel concept. [1]: https://man7.org/linux/man-pages/man7/keyrings.7.html https://man7.org/linux/man-pages/man7/keyrings.7.html