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2026-01-08lib/crypto: aes: Fix missing MMU protection for AES S-boxEric Biggers1-2/+2
__cacheline_aligned puts the data in the ".data..cacheline_aligned" section, which isn't marked read-only i.e. it doesn't receive MMU protection. Replace it with ____cacheline_aligned which does the right thing and just aligns the data while keeping it in ".rodata". Fixes: b5e0b032b6c3 ("crypto: aes - add generic time invariant AES cipher") Cc: stable@vger.kernel.org Reported-by: Qingfang Deng <dqfext@gmail.com> Closes: https://lore.kernel.org/r/20260105074712.498-1-dqfext@gmail.com/ Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20260107052023.174620-1-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org>
2025-06-30lib/crypto: Explicitly include <linux/export.h>Eric Biggers1-0/+1
Fix build warnings with W=1 that started appearing after commit a934a57a42f6 ("scripts/misc-check: check missing #include <linux/export.h> 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 <ebiggers@kernel.org>
2024-10-02move asm/unaligned.h to linux/unaligned.hAl Viro1-1/+1
asm/unaligned.h is always an include of asm-generic/unaligned.h; might as well move that thing to linux/unaligned.h and include that - there's nothing arch-specific in that header. auto-generated by the following: for i in `git grep -l -w asm/unaligned.h`; do sed -i -e "s/asm\/unaligned.h/linux\/unaligned.h/" $i done for i in `git grep -l -w asm-generic/unaligned.h`; do sed -i -e "s/asm-generic\/unaligned.h/linux\/unaligned.h/" $i done git mv include/asm-generic/unaligned.h include/linux/unaligned.h git mv tools/include/asm-generic/unaligned.h tools/include/linux/unaligned.h sed -i -e "/unaligned.h/d" include/asm-generic/Kbuild sed -i -e "s/__ASM_GENERIC/__LINUX/" include/linux/unaligned.h tools/include/linux/unaligned.h
2019-08-09crypto: aes - helper function to validate key length for AES algorithmsIuliana Prodan1-4/+4
Add inline helper function to check key length for AES algorithms. The key can be 128, 192 or 256 bits size. This function is used in the generic aes implementation. Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-07-26crypto: lib/aes - export sbox and inverse sboxArd Biesheuvel1-0/+6
There are a few copies of the AES S-boxes floating around, so export the ones from the AES library so that we can reuse them in other modules. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-07-26crypto: aes - create AES library based on the fixed time AES codeArd Biesheuvel1-0/+350
Take the existing small footprint and mostly time invariant C code and turn it into a AES library that can be used for non-performance critical, casual use of AES, and as a fallback for, e.g., SIMD code that needs a secondary path that can be taken in contexts where the SIMD unit is off limits (e.g., in hard interrupts taken from kernel context) Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>