Commit 24c91b62 authored Jun 30, 2025 by Eric Biggers

lib/crypto: arm/sha512: Migrate optimized SHA-512 code to library



Instead of exposing the arm-optimized SHA-512 code via arm-specific
crypto_shash algorithms, instead just implement the sha512_blocks()
library function.  This is much simpler, it makes the SHA-512 (and
SHA-384) library functions be arm-optimized, and it fixes the
longstanding issue where the arm-optimized SHA-512 code was disabled by
default.  SHA-512 still remains available through crypto_shash, but
individual architectures no longer need to handle it.

To match sha512_blocks(), change the type of the nblocks parameter of
the assembly functions from int to size_t.  The assembly functions
actually already treated it as size_t.

Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250630160320.2888-8-ebiggers@kernel.org


Signed-off-by: Eric Biggers <ebiggers@kernel.org>

parent 4bc7f7b6

arch/arm/configs/exynos_defconfig

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Original line number	Diff line number	Diff line
		@@ -364,7 +364,6 @@ CONFIG_CRYPTO_USER_API_SKCIPHER=m
		CONFIG_CRYPTO_USER_API_RNG=m
		CONFIG_CRYPTO_USER_API_AEAD=m
		CONFIG_CRYPTO_SHA1_ARM_NEON=m
		CONFIG_CRYPTO_SHA512_ARM=m
		CONFIG_CRYPTO_AES_ARM_BS=m
		CONFIG_CRYPTO_CHACHA20_NEON=m
		CONFIG_CRYPTO_DEV_EXYNOS_RNG=y

arch/arm/configs/milbeaut_m10v_defconfig

+0 −1

Original line number	Diff line number	Diff line
		@@ -100,7 +100,6 @@ CONFIG_CRYPTO_SEQIV=m
		CONFIG_CRYPTO_GHASH_ARM_CE=m
		CONFIG_CRYPTO_SHA1_ARM_NEON=m
		CONFIG_CRYPTO_SHA1_ARM_CE=m
		CONFIG_CRYPTO_SHA512_ARM=m
		CONFIG_CRYPTO_AES_ARM=m
		CONFIG_CRYPTO_AES_ARM_BS=m
		CONFIG_CRYPTO_AES_ARM_CE=m

arch/arm/configs/multi_v7_defconfig

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Original line number	Diff line number	Diff line
		@@ -1282,7 +1282,6 @@ CONFIG_CRYPTO_USER_API_AEAD=m
		CONFIG_CRYPTO_GHASH_ARM_CE=m
		CONFIG_CRYPTO_SHA1_ARM_NEON=m
		CONFIG_CRYPTO_SHA1_ARM_CE=m
		CONFIG_CRYPTO_SHA512_ARM=m
		CONFIG_CRYPTO_AES_ARM=m
		CONFIG_CRYPTO_AES_ARM_BS=m
		CONFIG_CRYPTO_AES_ARM_CE=m

arch/arm/configs/omap2plus_defconfig

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Original line number	Diff line number	Diff line
		@@ -705,7 +705,6 @@ CONFIG_SECURITY=y
		CONFIG_CRYPTO_MICHAEL_MIC=y
		CONFIG_CRYPTO_GHASH_ARM_CE=m
		CONFIG_CRYPTO_SHA1_ARM_NEON=m
		CONFIG_CRYPTO_SHA512_ARM=m
		CONFIG_CRYPTO_AES_ARM=m
		CONFIG_CRYPTO_AES_ARM_BS=m
		CONFIG_CRYPTO_CHACHA20_NEON=m

arch/arm/configs/pxa_defconfig

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Original line number	Diff line number	Diff line
		@@ -659,7 +659,6 @@ CONFIG_CRYPTO_XCBC=m
		CONFIG_CRYPTO_DEFLATE=y
		CONFIG_CRYPTO_LZO=y
		CONFIG_CRYPTO_SHA1_ARM=m
		CONFIG_CRYPTO_SHA512_ARM=m
		CONFIG_CRYPTO_AES_ARM=m
		CONFIG_FONTS=y
		CONFIG_FONT_8x8=y