fips-mode-setup(8) is used to check and control the system FIPS mode.
When enabling the system FIPS mode the command completes the installation of FIPS modules if needed by calling fips-finish-install and changes the system crypto policy to FIPS.
Then the command modifies the boot loader configuration to add fips=1 and boot=<boot-device> options to the kernel command line.
When disabling the system FIPS mode the system crypto policy is switched to DEFAULT and the kernel command line option fips=0 is set.
The following options are available in fips-mode-setup tool.
/proc/sys/crypto/fips_enabled
update-crypto-policies(8), fips-finish-install(8)
Written by Tomáš Mráz.