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| author | Eric Biggers <ebiggers@kernel.org> | 2025-07-12 16:22:59 -0700 |
|---|---|---|
| committer | Eric Biggers <ebiggers@kernel.org> | 2025-07-14 11:11:48 -0700 |
| commit | 00d549bb89e471b7df550459fcb51ffbded39cbf (patch) | |
| tree | eb4f699859d57af7537194687503bf92841d1e09 /lib/crypto/Kconfig | |
| parent | 70cb6ca58fddb02e269fe743ba75d53d577b5b1c (diff) | |
lib/crypto: arm64/sha1: Migrate optimized code into library
Instead of exposing the arm64-optimized SHA-1 code via arm64-specific
crypto_shash algorithms, instead just implement the sha1_blocks()
library function. This is much simpler, it makes the SHA-1 library
functions be arm64-optimized, and it fixes the longstanding issue where
the arm64-optimized SHA-1 code was disabled by default. SHA-1 still
remains available through crypto_shash, but individual architectures no
longer need to handle it.
Remove support for SHA-1 finalization from assembly code, since the
library does not yet support architecture-specific overrides of the
finalization. (Support for that has been omitted for now, for
simplicity and because usually it isn't performance-critical.)
To match sha1_blocks(), change the type of the nblocks parameter and the
return value of __sha1_ce_transform() from int to size_t. Update the
assembly code accordingly.
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250712232329.818226-9-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Diffstat (limited to 'lib/crypto/Kconfig')
| -rw-r--r-- | lib/crypto/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/crypto/Kconfig b/lib/crypto/Kconfig index 519c5d6a050f..05cce143af31 100644 --- a/lib/crypto/Kconfig +++ b/lib/crypto/Kconfig @@ -147,6 +147,7 @@ config CRYPTO_LIB_SHA1_ARCH bool depends on CRYPTO_LIB_SHA1 && !UML default y if ARM + default y if ARM64 && KERNEL_MODE_NEON config CRYPTO_LIB_SHA256 tristate |