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KEYUTILS(7)                  Kernel key managementKEYUTILS(7)NAME       keyutils - in-kernel key management utilitiesDESCRIPTION       The  keyutils package is a library and a set of utilities for accessing       the kernel keyrings facility.       A header file is supplied to provide the definitions  and  declarations       required to access the library:              #include <keyutils.h>       To link with the library, the following:              -lkeyutils       should be specified to the linker.       Three system calls are provided:add_key(2)              Supply a new key to the kernel.request_key(2)              Find  an existing key for use, or, optionally, create one if one              does not exist.keyctl(2)              Control a key in various ways.  The library provides  a  variety              of  wrappers  around  this  system call and those should be used              rather than calling it directly.       See theadd_key(2),request_key(2), andkeyctl(2) manual pages for more       information.       The keyctl() wrappers are listed on thekeyctl(3) manual page.UTILITIES       A  program is provided to interact with the kernel facility by a number       of subcommands, e.g.:              keyctl add user foo bar @s       See thekeyctl(1) manual page for information on that.       The kernel has the ability to upcall  to  userspace  to  fabricate  new       keys.   This can be triggered by request_key(), but userspace is better       off using add_key() instead if it possibly can.       The upcalling mechanism is usually routed via therequest-key(8)  pro-       gram.  What this does with any particular key is configurable in:              /etc/request-key.conf              /etc/request-key.d/       See  therequest-key.conf(5)  and  therequest-key(8) manual pages for       more information.SEE ALSOkeyctl(1),keyctl(3),keyrings(7),persistent-keyring(7),process-keyring(7),session-keyring(7),thread-keyring(7),user-keyring(7),user-session-keyring(7),pam_keyinit(8)Linux                             21 Feb 2014KEYUTILS(7)