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CONFIG_PERSISTENT_KEYRINGS: Enable register of persistent per-UID keyrings

General informations

The Linux kernel configuration item CONFIG_PERSISTENT_KEYRINGS:

Help text

This option provides a register of persistent per-UID keyrings, primarily aimed at Kerberos key storage. The keyrings are persistent in the sense that they stay around after all processes of that UID have exited, not that they survive the machine being rebooted.

A particular keyring may be accessed by either the user whose keyring it is or by a process with administrative privileges. The active LSMs gets to rule on which admin-level processes get to access the cache.

Keyrings are created and added into the register upon demand and get removed if they expire (a default timeout is set upon creation).



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