kernel/git/stable/linux.git/lib/crypto/poly1305-generic.c, branch master

lib/crypto: poly1305: Consolidate into single module

2025-08-29T16:49:18+00:00

Consolidate the Poly1305 code into a single module, similar to various other algorithms (SHA-1, SHA-256, SHA-512, etc.): - Each arch now provides a header file lib/crypto/$(SRCARCH)/poly1305.h, replacing lib/crypto/$(SRCARCH)/poly1305*.c. The header defines poly1305_block_init(), poly1305_blocks(), poly1305_emit(), and optionally poly1305_mod_init_arch(). It is included by lib/crypto/poly1305.c, and thus the code gets built into the single libpoly1305 module, with improved inlining in some cases. - Whether arch-optimized Poly1305 is buildable is now controlled centrally by lib/crypto/Kconfig instead of by lib/crypto/$(SRCARCH)/Kconfig. The conditions for enabling it remain the same as before, and it remains enabled by default. (The PPC64 one remains unconditionally disabled due to 'depends on BROKEN'.) - Any additional arch-specific translation units for the optimized Poly1305 code, such as assembly files, are now compiled by lib/crypto/Makefile instead of lib/crypto/$(SRCARCH)/Makefile. A special consideration is needed because the Adiantum code uses the poly1305_core_*() functions directly. For now, just carry forward that approach. This means retaining the CRYPTO_LIB_POLY1305_GENERIC kconfig symbol, and keeping the poly1305_core_*() functions in separate translation units. So it's not quite as streamlined I've done with the other hash functions, but we still get a single libpoly1305 module. Note: to see the diff from the arm, arm64, and x86 .c files to the new .h files, view this commit with 'git show -M10'. Reviewed-by: Ard Biesheuvel Link: https://lore.kernel.org/r/20250829152513.92459-3-ebiggers@kernel.org Signed-off-by: Eric Biggers

lib/crypto: Explicitly include

2025-06-30T16:26:19+00:00

Fix build warnings with W=1 that started appearing after commit a934a57a42f6 ("scripts/misc-check: check missing #include when W=1"). While at it, also sort the include lists alphabetically. (Keep asm/irqflags.h last, as otherwise it doesn't build on alpha.) This handles all of lib/crypto/, but not arch/*/lib/crypto/. The exports in arch/*/lib/crypto/ will go away when the code is properly integrated into lib/crypto/ as planned. Link: https://lore.kernel.org/r/20250613184814.50173-1-ebiggers@kernel.org Signed-off-by: Eric Biggers

crypto: lib/poly1305 - Build main library on LIB_POLY1305 and split generic code out

2025-05-06T11:05:24+00:00

Split the lib poly1305 code just as was done with sha256. Make the main library code conditional on LIB_POLY1305 instead of LIB_POLY1305_GENERIC. Reported-by: Giovanni Cabiddu Fixes: 10a6d72ea355 ("crypto: lib/poly1305 - Use block-only interface") Signed-off-by: Herbert Xu