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nvme-auth: common: add HMAC helper functions

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Add some helper functions for computing HMAC-SHA256, HMAC-SHA384, or
HMAC-SHA512 values using the crypto library instead of crypto_shash.
These will enable some significant simplifications and performance
improvements in nvme-auth.

Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Keith Busch <kbusch@kernel.org>
This commit is contained in:
Eric Biggers
2026-03-01 23:59:45 -08:00
committed by Keith Busch
parent 4454820b4e
commit 4263ca1cae
3 changed files with 82 additions and 0 deletions
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2
drivers/nvme/common/Kconfig
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@@ -13,6 +13,8 @@ config NVME_AUTH
select CRYPTO_DH
select CRYPTO_DH_RFC7919_GROUPS
select CRYPTO_HKDF
select CRYPTO_LIB_SHA256
select CRYPTO_LIB_SHA512
config NVME_AUTH_KUNIT_TEST
tristate "KUnit tests for NVMe authentication" if !KUNIT_ALL_TESTS