CONFIG_PKEY_PCKMO: PKEY PCKMO support handler

General informations

The Linux kernel configuration item CONFIG_PKEY_PCKMO:

• prompt: PKEY PCKMO support handler
• type: tristate
• depends on: CONFIG_PKEY
• defined in drivers/crypto/Kconfig
• found in Linux kernels: 6.12
• modules built: pkey-pckmo

Help text

This is the PCKMO support handler for deriving protected keys from clear key values via invoking the PCKMO instruction.

The PCKMO instruction can be enabled and disabled in the crypto settings at the LPAR profile. This handler checks for availability during initialization and if build as a kernel module unloads itself if PCKMO is disabled.

The PCKMO way of deriving protected keys from clear key material is especially used during self test of protected key ciphers like PAES but the CCA and EP11 handler provide alternate ways to generate protected keys from clear key values.

If you have selected the PKEY option then you should also enable this option unless you are sure you never need to derive protected keys from clear key values directly via PCKMO.

Hardware

LKDDb

Raw data from LKDDb:

• lkddb module pkey-pckmo CONFIG_PKEY_PCKMO : drivers/crypto/Kconfig : "PKEY PCKMO support handler" # in 6.12

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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