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e96cb9507f
Consolidate the CPU-based SHA-256 code into a single module, following what I did with SHA-512: - Each arch now provides a header file lib/crypto/$(SRCARCH)/sha256.h, replacing lib/crypto/$(SRCARCH)/sha256.c. The header defines sha256_blocks() and optionally sha256_mod_init_arch(). It is included by lib/crypto/sha256.c, and thus the code gets built into the single libsha256 module, with proper inlining and dead code elimination. - sha256_blocks_generic() is moved from lib/crypto/sha256-generic.c into lib/crypto/sha256.c. It's now a static function marked with __maybe_unused, so the compiler automatically eliminates it in any cases where it's not used. - Whether arch-optimized SHA-256 is buildable is now controlled centrally by lib/crypto/Kconfig instead of by lib/crypto/$(SRCARCH)/Kconfig. The conditions for enabling it remain the same as before, and it remains enabled by default. - Any additional arch-specific translation units for the optimized SHA-256 code (such as assembly files) are now compiled by lib/crypto/Makefile instead of lib/crypto/$(SRCARCH)/Makefile. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250630160645.3198-13-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org>
24 lines
642 B
Text
24 lines
642 B
Text
# SPDX-License-Identifier: GPL-2.0-only
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config CRYPTO_BLAKE2S_ARM
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bool "Hash functions: BLAKE2s"
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select CRYPTO_ARCH_HAVE_LIB_BLAKE2S
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help
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BLAKE2s cryptographic hash function (RFC 7693)
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Architecture: arm
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This is faster than the generic implementations of BLAKE2s and
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BLAKE2b, but slower than the NEON implementation of BLAKE2b.
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There is no NEON implementation of BLAKE2s, since NEON doesn't
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really help with it.
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config CRYPTO_CHACHA20_NEON
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tristate
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default CRYPTO_LIB_CHACHA
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select CRYPTO_ARCH_HAVE_LIB_CHACHA
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config CRYPTO_POLY1305_ARM
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tristate
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default CRYPTO_LIB_POLY1305
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select CRYPTO_ARCH_HAVE_LIB_POLY1305
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