CONFIG_TCG_TPM2_HMAC: Use HMAC and encrypted transactions on the TPM bus

General informations

The Linux kernel configuration item CONFIG_TCG_TPM2_HMAC:

• prompt: Use HMAC and encrypted transactions on the TPM bus
• type: bool
• depends on: (none)
• defined in drivers/char/tpm/Kconfig
• found in Linux kernels: 6.10, 6.11-rc+HEAD

Help text

Setting this causes us to deploy a scheme which uses request and response HMACs in addition to encryption for communicating with the TPM to prevent or detect bus snooping and interposer attacks (see tpm-security.rst). Saying Y here adds some encryption overhead to all kernel to TPM transactions.

Hardware

LKDDb

Raw data from LKDDb:

• (none)

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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