Files
linux/lib/crypto/Kconfig
Eric Biggers 23e5c306a2 lib/crypto: sparc: Drop optimized MD5 code
MD5 is obsolete.  Continuing to maintain architecture-optimized
implementations of MD5 is unnecessary and risky.  It diverts resources
from the modern algorithms that are actually important.

While there was demand for continuing to maintain the PowerPC optimized
MD5 code to accommodate userspace programs that are misusing AF_ALG
(https://lore.kernel.org/linux-crypto/c4191597-341d-4fd7-bc3d-13daf7666c41@csgroup.eu/),
no such demand has been seen for the SPARC optimized MD5 code.

Thus, let's drop it and focus effort on the more modern SHA algorithms,
which already have optimized code for SPARC.

Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20260326203341.60393-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
2026-03-30 12:35:16 -07:00

282 lines
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# SPDX-License-Identifier: GPL-2.0
config CRYPTO_HASH_INFO
bool
config CRYPTO_LIB_UTILS
tristate
config CRYPTO_LIB_AES
tristate
# Select dependencies of modes that are part of libaes.
select CRYPTO_LIB_UTILS if CRYPTO_LIB_AES_CBC_MACS
config CRYPTO_LIB_AES_ARCH
bool
depends on CRYPTO_LIB_AES && !UML && !KMSAN
default y if ARM
default y if ARM64
default y if PPC && (SPE || (PPC64 && VSX))
default y if RISCV && 64BIT && TOOLCHAIN_HAS_VECTOR_CRYPTO && \
RISCV_EFFICIENT_VECTOR_UNALIGNED_ACCESS
default y if S390
default y if SPARC64
default y if X86
config CRYPTO_LIB_AESCFB
tristate
select CRYPTO_LIB_AES
select CRYPTO_LIB_UTILS
config CRYPTO_LIB_AES_CBC_MACS
tristate
select CRYPTO_LIB_AES
help
The AES-CMAC, AES-XCBC-MAC, and AES-CBC-MAC library functions. Select
this if your module uses any of the functions from
<crypto/aes-cbc-macs.h>.
config CRYPTO_LIB_AESGCM
tristate
select CRYPTO_LIB_AES
select CRYPTO_LIB_GF128HASH
select CRYPTO_LIB_UTILS
config CRYPTO_LIB_ARC4
tristate
config CRYPTO_LIB_GF128MUL
tristate
config CRYPTO_LIB_BLAKE2B
tristate
help
The BLAKE2b library functions. Select this if your module uses any of
the functions from <crypto/blake2b.h>.
config CRYPTO_LIB_BLAKE2B_ARCH
bool
depends on CRYPTO_LIB_BLAKE2B && !UML
default y if ARM && KERNEL_MODE_NEON
# BLAKE2s support is always built-in, so there's no CRYPTO_LIB_BLAKE2S option.
config CRYPTO_LIB_BLAKE2S_ARCH
bool
depends on !UML
default y if ARM
default y if X86_64
config CRYPTO_LIB_CHACHA
tristate
select CRYPTO_LIB_UTILS
help
Enable the ChaCha library interface. Select this if your module uses
chacha_crypt() or hchacha_block().
config CRYPTO_LIB_CHACHA_ARCH
bool
depends on CRYPTO_LIB_CHACHA && !UML && !KMSAN
default y if ARM
default y if ARM64
default y if MIPS && CPU_MIPS32_R2
default y if PPC64 && CPU_LITTLE_ENDIAN && VSX
default y if RISCV && 64BIT && TOOLCHAIN_HAS_VECTOR_CRYPTO && \
RISCV_EFFICIENT_VECTOR_UNALIGNED_ACCESS
default y if S390
default y if X86_64
config CRYPTO_LIB_CURVE25519
tristate
select CRYPTO_LIB_UTILS
help
The Curve25519 library functions. Select this if your module uses any
of the functions from <crypto/curve25519.h>.
config CRYPTO_LIB_CURVE25519_ARCH
bool
depends on CRYPTO_LIB_CURVE25519 && !UML && !KMSAN
default y if ARM && KERNEL_MODE_NEON && !CPU_BIG_ENDIAN
default y if PPC64 && CPU_LITTLE_ENDIAN
default y if X86_64
config CRYPTO_LIB_CURVE25519_GENERIC
bool
depends on CRYPTO_LIB_CURVE25519
default y if !CRYPTO_LIB_CURVE25519_ARCH || ARM || X86_64
config CRYPTO_LIB_DES
tristate
config CRYPTO_LIB_GF128HASH
tristate
help
The GHASH and POLYVAL library functions. Select this if your module
uses any of the functions from <crypto/gf128hash.h>.
config CRYPTO_LIB_GF128HASH_ARCH
bool
depends on CRYPTO_LIB_GF128HASH && !UML
default y if ARM && KERNEL_MODE_NEON
default y if ARM64
default y if PPC64 && VSX
default y if RISCV && 64BIT && TOOLCHAIN_HAS_VECTOR_CRYPTO && \
RISCV_EFFICIENT_VECTOR_UNALIGNED_ACCESS
default y if S390
default y if X86_64
config CRYPTO_LIB_MD5
tristate
help
The MD5 and HMAC-MD5 library functions. Select this if your module
uses any of the functions from <crypto/md5.h>.
config CRYPTO_LIB_MD5_ARCH
bool
depends on CRYPTO_LIB_MD5 && !UML
default y if PPC
config CRYPTO_LIB_MLDSA
tristate
select CRYPTO_LIB_SHA3
help
The ML-DSA library functions. Select this if your module uses any of
the functions from <crypto/mldsa.h>.
config CRYPTO_LIB_NH
tristate
help
Implementation of the NH almost-universal hash function, specifically
the variant of NH used in Adiantum.
config CRYPTO_LIB_NH_ARCH
bool
depends on CRYPTO_LIB_NH && !UML && !KMSAN
default y if ARM && KERNEL_MODE_NEON
default y if ARM64
default y if X86_64
config CRYPTO_LIB_POLY1305
tristate
help
The Poly1305 library functions. Select this if your module uses any
of the functions from <crypto/poly1305.h>.
config CRYPTO_LIB_POLY1305_ARCH
bool
depends on CRYPTO_LIB_POLY1305 && !UML && !KMSAN
default y if ARM
default y if ARM64
default y if MIPS
# The PPC64 code needs to be fixed to work in softirq context.
default y if PPC64 && CPU_LITTLE_ENDIAN && VSX && BROKEN
default y if RISCV
default y if X86_64
# This symbol controls the inclusion of the Poly1305 generic code. This differs
# from most of the other algorithms, which handle the generic code
# "automatically" via __maybe_unused. This is needed so that the Adiantum code,
# which calls the poly1305_core_*() functions directly, can enable them.
config CRYPTO_LIB_POLY1305_GENERIC
bool
depends on CRYPTO_LIB_POLY1305
# Enable if there's no arch impl or the arch impl requires the generic
# impl as a fallback. (Or if selected explicitly.)
default y if !CRYPTO_LIB_POLY1305_ARCH || PPC64
config CRYPTO_LIB_POLY1305_RSIZE
int
default 2 if MIPS || RISCV
default 11 if X86_64
default 9 if ARM || ARM64
default 1
config CRYPTO_LIB_CHACHA20POLY1305
tristate
select CRYPTO_LIB_CHACHA
select CRYPTO_LIB_POLY1305
select CRYPTO_LIB_UTILS
config CRYPTO_LIB_SHA1
tristate
help
The SHA-1 and HMAC-SHA1 library functions. Select this if your module
uses any of the functions from <crypto/sha1.h>.
config CRYPTO_LIB_SHA1_ARCH
bool
depends on CRYPTO_LIB_SHA1 && !UML
default y if ARM
default y if ARM64
default y if MIPS && CPU_CAVIUM_OCTEON
default y if PPC
default y if S390
default y if SPARC64
default y if X86_64
config CRYPTO_LIB_SHA256
tristate
help
The SHA-224, SHA-256, HMAC-SHA224, and HMAC-SHA256 library functions.
Select this if your module uses any of these functions from
<crypto/sha2.h>.
config CRYPTO_LIB_SHA256_ARCH
bool
depends on CRYPTO_LIB_SHA256 && !UML
default y if ARM && !CPU_V7M
default y if ARM64
default y if MIPS && CPU_CAVIUM_OCTEON
default y if PPC && SPE
default y if RISCV && 64BIT && TOOLCHAIN_HAS_VECTOR_CRYPTO && \
RISCV_EFFICIENT_VECTOR_UNALIGNED_ACCESS
default y if S390
default y if SPARC64
default y if X86_64
config CRYPTO_LIB_SHA512
tristate
help
The SHA-384, SHA-512, HMAC-SHA384, and HMAC-SHA512 library functions.
Select this if your module uses any of these functions from
<crypto/sha2.h>.
config CRYPTO_LIB_SHA512_ARCH
bool
depends on CRYPTO_LIB_SHA512 && !UML
default y if ARM && !CPU_V7M
default y if ARM64
default y if MIPS && CPU_CAVIUM_OCTEON
default y if RISCV && 64BIT && TOOLCHAIN_HAS_VECTOR_CRYPTO && \
RISCV_EFFICIENT_VECTOR_UNALIGNED_ACCESS
default y if S390
default y if SPARC64
default y if X86_64
config CRYPTO_LIB_SHA3
tristate
select CRYPTO_LIB_UTILS
help
The SHA3 library functions. Select this if your module uses any of
the functions from <crypto/sha3.h>.
config CRYPTO_LIB_SHA3_ARCH
bool
depends on CRYPTO_LIB_SHA3 && !UML
default y if ARM64
default y if S390
config CRYPTO_LIB_SM3
tristate
help
The SM3 library functions. Select this if your module uses any of the
functions from <crypto/sm3.h>.
config CRYPTO_LIB_SM3_ARCH
bool
depends on CRYPTO_LIB_SM3 && !UML
default y if ARM64
default y if RISCV && 64BIT && TOOLCHAIN_HAS_VECTOR_CRYPTO && \
RISCV_EFFICIENT_VECTOR_UNALIGNED_ACCESS
default y if X86_64