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Currently the full set of crypto self-tests requires
CONFIG_CRYPTO_MANAGER_EXTRA_TESTS=y. This is problematic in two ways.
First, developers regularly overlook this option. Second, the
description of the tests as "extra" sometimes gives the impression that
it is not required that all algorithms pass these tests.
Given that the main use case for the crypto self-tests is for
developers, make enabling CONFIG_CRYPTO_SELFTESTS=y just enable the full
set of crypto self-tests by default.
The slow tests can still be disabled by adding the command-line
parameter cryptomgr.noextratests=1, soon to be renamed to
cryptomgr.noslowtests=1. The only known use case for doing this is for
people trying to use the crypto self-tests to satisfy the FIPS 140-3
pre-operational self-testing requirements when the kernel is being
validated as a FIPS 140-3 cryptographic module.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The negative-sense of CRYPTO_MANAGER_DISABLE_TESTS is a longstanding
mistake that regularly causes confusion. Especially bad is that you can
have CRYPTO=n && CRYPTO_MANAGER_DISABLE_TESTS=n, which is ambiguous.
Replace CRYPTO_MANAGER_DISABLE_TESTS with CRYPTO_SELFTESTS which has the
expected behavior.
The tests continue to be disabled by default.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Add explicit array bounds to the function prototypes for the parameters
that didn't already get handled by the conversion to use chacha_state:
- chacha_block_*():
Change 'u8 *out' or 'u8 *stream' to u8 out[CHACHA_BLOCK_SIZE].
- hchacha_block_*():
Change 'u32 *out' or 'u32 *stream' to u32 out[HCHACHA_OUT_WORDS].
- chacha_init():
Change 'const u32 *key' to 'const u32 key[CHACHA_KEY_WORDS]'.
Change 'const u8 *iv' to 'const u8 iv[CHACHA_IV_SIZE]'.
No functional changes. This just makes it clear when fixed-size arrays
are expected.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Now that the ChaCha state matrix is strongly-typed, add a helper
function chacha_zeroize_state() which zeroizes it. Then convert all
applicable callers to use it instead of direct memzero_explicit. No
functional changes.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Use struct assignment instead of memcpy() in lib/crypto/chacha.c where
appropriate. No functional change.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The ChaCha state matrix is 16 32-bit words. Currently it is represented
in the code as a raw u32 array, or even just a pointer to u32. This
weak typing is error-prone. Instead, introduce struct chacha_state:
struct chacha_state {
u32 x[16];
};
Convert all ChaCha and HChaCha functions to use struct chacha_state.
No functional changes.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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code out
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 <giovanni.cabiddu@intel.com>
Fixes: 10a6d72ea355 ("crypto: lib/poly1305 - Use block-only interface")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Use the BLOCK_HASH_UPDATE_BLOCKS helper instead of duplicating
partial block handling.
Also remove the unused lib/sha256 force-generic interface.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Add an internal sha256_finup helper and move the finalisation code
from __sha256_final into it.
Also add sha256_choose_blocks and CRYPTO_ARCH_HAVE_LIB_SHA256_SIMD
so that the Crypto API can use the SIMD block function unconditionally.
The Crypto API must not be used in hard IRQs and there is no reason
to have a fallback path for hardirqs.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Follow best practices by changing the length parameters to size_t and
explicitly specifying the length of the output digest arrays.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Instead of providing crypto_shash algorithms for the arch-optimized
SHA-256 code, instead implement the SHA-256 library. This is much
simpler, it makes the SHA-256 library functions be arch-optimized, and
it fixes the longstanding issue where the arch-optimized SHA-256 was
disabled by default. SHA-256 still remains available through
crypto_shash, but individual architectures no longer need to handle it.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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As has been done for various other algorithms, rework the design of the
SHA-256 library to support arch-optimized implementations, and make
crypto/sha256.c expose both generic and arch-optimized shash algorithms
that wrap the library functions.
This allows users of the SHA-256 library functions to take advantage of
the arch-optimized code, and this makes it much simpler to integrate
SHA-256 for each architecture.
Note that sha256_base.h is not used in the new design. It will be
removed once all the architecture-specific code has been updated.
Move the generic block function into its own module to avoid a circular
dependency from libsha256.ko => sha256-$ARCH.ko => libsha256.ko.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Add export and import functions to maintain existing export format.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Now that every architecture provides a block function, use that
to implement the lib/poly1305 and remove the old per-arch code.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Add a block-only interface for poly1305. Implement the generic
code first.
Also use the generic partial block helper.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Now that the architecture-optimized Poly1305 kconfig symbols are defined
regardless of CRYPTO, there is no need for CRYPTO_LIB_POLY1305 to select
CRYPTO. So, remove that. This makes the indirection through the
CRYPTO_LIB_POLY1305_INTERNAL symbol unnecessary, so get rid of that and
just use CRYPTO_LIB_POLY1305 directly. Finally, make the fallback to
the generic implementation use a default value instead of a select; this
makes it consistent with how the arch-optimized code gets enabled and
also with how CRYPTO_LIB_BLAKE2S_GENERIC gets enabled.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Now that the architecture-optimized ChaCha kconfig symbols are defined
regardless of CRYPTO, there is no need for CRYPTO_LIB_CHACHA to select
CRYPTO. So, remove that. This makes the indirection through the
CRYPTO_LIB_CHACHA_INTERNAL symbol unnecessary, so get rid of that and
just use CRYPTO_LIB_CHACHA directly. Finally, make the fallback to the
generic implementation use a default value instead of a select; this
makes it consistent with how the arch-optimized code gets enabled and
also with how CRYPTO_LIB_BLAKE2S_GENERIC gets enabled.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Continue disentangling the crypto library functions from the generic
crypto infrastructure by moving the x86 BLAKE2s, ChaCha, and Poly1305
library functions into a new directory arch/x86/lib/crypto/ that does
not depend on CRYPTO. This mirrors the distinction between crypto/ and
lib/crypto/.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Continue disentangling the crypto library functions from the generic
crypto infrastructure by moving the s390 ChaCha library functions into a
new directory arch/s390/lib/crypto/ that does not depend on CRYPTO.
This mirrors the distinction between crypto/ and lib/crypto/.
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Continue disentangling the crypto library functions from the generic
crypto infrastructure by moving the riscv ChaCha library functions into
a new directory arch/riscv/lib/crypto/ that does not depend on CRYPTO.
This mirrors the distinction between crypto/ and lib/crypto/.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Continue disentangling the crypto library functions from the generic
crypto infrastructure by moving the powerpc ChaCha and Poly1305 library
functions into a new directory arch/powerpc/lib/crypto/ that does not
depend on CRYPTO. This mirrors the distinction between crypto/ and
lib/crypto/.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Continue disentangling the crypto library functions from the generic
crypto infrastructure by moving the mips ChaCha and Poly1305 library
functions into a new directory arch/mips/lib/crypto/ that does not
depend on CRYPTO. This mirrors the distinction between crypto/ and
lib/crypto/.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Continue disentangling the crypto library functions from the generic
crypto infrastructure by moving the arm64 ChaCha and Poly1305 library
functions into a new directory arch/arm64/lib/crypto/ that does not
depend on CRYPTO. This mirrors the distinction between crypto/ and
lib/crypto/.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Continue disentangling the crypto library functions from the generic
crypto infrastructure by moving the arm BLAKE2s, ChaCha, and Poly1305
library functions into a new directory arch/arm/lib/crypto/ that does
not depend on CRYPTO. This mirrors the distinction between crypto/ and
lib/crypto/.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Now that all sm3_base users have been converted to use the API
partial block handling, remove the partial block helpers as well
as the lib/crypto functions.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Now that all sha256_base users have been converted to use the API
partial block handling, remove the partial block helpers.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Use the Crypto API partial block handling.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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These fields are no longer needed, so remove them.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Export the generic block function so that it can be used by the
Crypto API.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Move the sm3 library code into lib/crypto.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Any driver that needs these library functions should already be selecting
the corresponding Kconfig symbols, so there is no real point in making
these visible.
The original patch that made these user selectable described problems
with drivers failing to select the code they use, but for consistency
it's better to always use 'select' on a symbol than to mix it with
'depends on'.
Fixes: e56e18985596 ("lib/crypto: add prompts back to crypto libraries")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The ChaCha20-Poly1305 library code uses the sg_miter API to process
input presented via scatterlists, except for the special case where the
digest buffer is not covered entirely by the same scatterlist entry as
the last byte of input. In that case, it uses scatterwalk_map_and_copy()
to access the memory in the input scatterlist where the digest is stored.
This results in a dependency on crypto/scatterwalk.c and therefore on
CONFIG_CRYPTO_ALGAPI, which is unnecessary, as the sg_miter API already
provides this functionality via sg_copy_to_buffer(). So use that
instead, and drop the dependencies on CONFIG_CRYPTO_ALGAPI and
CONFIG_CRYPTO.
Reported-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The ARCH_MAY_HAVE patch missed arm64, mips and s390. But it may
also lead to arch options being enabled but ineffective because
of modular/built-in conflicts.
As the primary user of all these options wireguard is selecting
the arch options anyway, make the same selections at the lib/crypto
option level and hide the arch options from the user.
Instead of selecting them centrally from lib/crypto, simply set
the default of each arch option as suggested by Eric Biggers.
Change the Crypto API generic algorithms to select the top-level
lib/crypto options instead of the generic one as otherwise there
is no way to enable the arch options (Eric Biggers). Introduce a
set of INTERNAL options to work around dependency cycles on the
CONFIG_CRYPTO symbol.
Fixes: 1047e21aecdf ("crypto: lib/Kconfig - Fix lib built-in failure when arch is modular")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Arnd Bergmann <arnd@kernel.org>
Closes: https://lore.kernel.org/oe-kbuild-all/202502232152.JC84YDLp-lkp@intel.com/
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The HAVE_ARCH Kconfig options in lib/crypto try to solve the
modular versus built-in problem, but it still fails when the
the LIB option (e.g., CRYPTO_LIB_CURVE25519) is selected externally.
Fix this by introducing a level of indirection with ARCH_MAY_HAVE
Kconfig options, these then go on to select the ARCH_HAVE options
if the ARCH Kconfig options matches that of the LIB option.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202501230223.ikroNDr1-lkp@intel.com/
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The stack frame in libaesgcm_init triggers a size warning on x86-64.
Reduce it by making buf static.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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gf128mul_4k_bbe(), gf128mul_bbe() and gf128mul_init_4k_bbe()
are part of the library originally added in 2006 by
commit c494e0705d67 ("[CRYPTO] lib: table driven multiplications in
GF(2^128)")
but have never been used.
Remove them.
(BBE is Big endian Byte/Big endian bits
Note the 64k table version is used and I've left that in)
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
"API:
- Add sig driver API
- Remove signing/verification from akcipher API
- Move crypto_simd_disabled_for_test to lib/crypto
- Add WARN_ON for return values from driver that indicates memory
corruption
Algorithms:
- Provide crc32-arch and crc32c-arch through Crypto API
- Optimise crc32c code size on x86
- Optimise crct10dif on arm/arm64
- Optimise p10-aes-gcm on powerpc
- Optimise aegis128 on x86
- Output full sample from test interface in jitter RNG
- Retry without padata when it fails in pcrypt
Drivers:
- Add support for Airoha EN7581 TRNG
- Add support for STM32MP25x platforms in stm32
- Enable iproc-r200 RNG driver on BCMBCA
- Add Broadcom BCM74110 RNG driver"
* tag 'v6.13-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (112 commits)
crypto: marvell/cesa - fix uninit value for struct mv_cesa_op_ctx
crypto: cavium - Fix an error handling path in cpt_ucode_load_fw()
crypto: aesni - Move back to module_init
crypto: lib/mpi - Export mpi_set_bit
crypto: aes-gcm-p10 - Use the correct bit to test for P10
hwrng: amd - remove reference to removed PPC_MAPLE config
crypto: arm/crct10dif - Implement plain NEON variant
crypto: arm/crct10dif - Macroify PMULL asm code
crypto: arm/crct10dif - Use existing mov_l macro instead of __adrl
crypto: arm64/crct10dif - Remove remaining 64x64 PMULL fallback code
crypto: arm64/crct10dif - Use faster 16x64 bit polynomial multiply
crypto: arm64/crct10dif - Remove obsolete chunking logic
crypto: bcm - add error check in the ahash_hmac_init function
crypto: caam - add error check to caam_rsa_set_priv_key_form
hwrng: bcm74110 - Add Broadcom BCM74110 RNG driver
dt-bindings: rng: add binding for BCM74110 RNG
padata: Clean up in padata_do_multithreaded()
crypto: inside-secure - Fix the return value of safexcel_xcbcmac_cra_init()
crypto: qat - Fix missing destroy_workqueue in adf_init_aer()
crypto: rsassa-pkcs1 - Reinstate support for legacy protocols
...
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This function is part of the exposed API and should be exported.
Otherwise a modular user would fail to build, e.g., crypto/rsa.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Move crypto_simd_disabled_for_test to lib/ so that crypto_simd_usable()
can be used by library code.
This was discussed previously
(https://lore.kernel.org/linux-crypto/20220716062920.210381-4-ebiggers@kernel.org/)
but was not done because there was no use case yet. However, this is
now needed for the arm64 CRC32 library code.
Tested with:
export ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu-
echo CONFIG_CRC32=y > .config
echo CONFIG_MODULES=y >> .config
echo CONFIG_CRYPTO=m >> .config
echo CONFIG_DEBUG_KERNEL=y >> .config
echo CONFIG_CRYPTO_MANAGER_DISABLE_TESTS=n >> .config
echo CONFIG_CRYPTO_MANAGER_EXTRA_TESTS=y >> .config
make olddefconfig
make -j$(nproc)
Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fix from Herbert Xu:
"Fix a regression in mpi that broke RSA"
* tag 'v6.12-p4' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: lib/mpi - Fix an "Uninitialized scalar variable" issue
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The "err" variable may be returned without an initialized value.
Fixes: 8e3a67f2de87 ("crypto: lib/mpi - Add error checks to extension")
Signed-off-by: Qianqiang Liu <qianqiang.liu@163.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The "err" variable may be returned without an initialized value.
Fixes: 8e3a67f2de87 ("crypto: lib/mpi - Add error checks to extension")
Signed-off-by: Qianqiang Liu <qianqiang.liu@163.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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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
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The remaining functions added by commit
a8ea8bdd9df92a0e5db5b43900abb7a288b8a53e did not check for memory
allocation errors. Add the checks and change the API to allow errors
to be returned.
Fixes: a8ea8bdd9df9 ("lib/mpi: Extend the MPI library")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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This partially reverts commit a8ea8bdd9df92a0e5db5b43900abb7a288b8a53e.
Most of it is no longer needed since sm2 has been removed. However,
the following functions have been kept as they have developed other
uses:
mpi_copy
mpi_mod
mpi_test_bit
mpi_set_bit
mpi_rshift
mpi_add
mpi_sub
mpi_addm
mpi_subm
mpi_mul
mpi_mulm
mpi_tdiv_r
mpi_fdiv_r
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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This reverts commit d58bb7e55a8a65894cc02f27c3e2bf9403e7c40f.
It's no longer needed since sm2 has been removed.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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We checked that "nlimbs" is non-zero in the outside if statement so delete
the duplicate check here.
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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With ARCH=arm, make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in lib/crypto/libsha256.o
Add the missing invocation of the MODULE_DESCRIPTION() macro to all
files which have a MODULE_LICENSE().
This includes sha1.c and utils.c which, although they did not produce
a warning with the arm allmodconfig configuration, may cause this
warning with other configurations.
Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Use existing swap() function rather than duplicating its implementation.
./lib/crypto/mpi/mpi-pow.c:211:11-12: WARNING opportunity for swap().
./lib/crypto/mpi/mpi-pow.c:239:12-13: WARNING opportunity for swap().
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=9327
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Use existing swap() function rather than duplicating its implementation.
./lib/crypto/mpi/ec.c:1291:20-21: WARNING opportunity for swap().
./lib/crypto/mpi/ec.c:1292:20-21: WARNING opportunity for swap().
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=9328
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Fix the allmodconfig 'make W=1' warnings:
WARNING: modpost: missing MODULE_DESCRIPTION() in lib/crypto/libchacha.o
WARNING: modpost: missing MODULE_DESCRIPTION() in lib/crypto/libarc4.o
WARNING: modpost: missing MODULE_DESCRIPTION() in lib/crypto/libdes.o
WARNING: modpost: missing MODULE_DESCRIPTION() in lib/crypto/libpoly1305.o
Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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