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# SPDX-License-Identifier: GPL-2.0
menuconfig ARM_CRYPTO
bool "ARM Accelerated Cryptographic Algorithms"
depends on ARM
help
Say Y here to choose from a selection of cryptographic algorithms
implemented using ARM specific CPU features or instructions.
if ARM_CRYPTO
config CRYPTO_SHA1_ARM
tristate "SHA1 digest algorithm (ARM-asm)"
select CRYPTO_SHA1
select CRYPTO_HASH
help
SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented
using optimized ARM assembler.
config CRYPTO_SHA1_ARM_NEON
tristate "SHA1 digest algorithm (ARM NEON)"
depends on KERNEL_MODE_NEON
select CRYPTO_SHA1_ARM
select CRYPTO_SHA1
select CRYPTO_HASH
help
SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented
using optimized ARM NEON assembly, when NEON instructions are
available.
config CRYPTO_SHA1_ARM_CE
tristate "SHA1 digest algorithm (ARM v8 Crypto Extensions)"
depends on KERNEL_MODE_NEON
select CRYPTO_SHA1_ARM
select CRYPTO_HASH
help
SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented
using special ARMv8 Crypto Extensions.
config CRYPTO_SHA2_ARM_CE
tristate "SHA-224/256 digest algorithm (ARM v8 Crypto Extensions)"
depends on KERNEL_MODE_NEON
select CRYPTO_SHA256_ARM
select CRYPTO_HASH
help
SHA-256 secure hash standard (DFIPS 180-2) implemented
using special ARMv8 Crypto Extensions.
config CRYPTO_SHA256_ARM
tristate "SHA-224/256 digest algorithm (ARM-asm and NEON)"
select CRYPTO_HASH
depends on !CPU_V7M
help
SHA-256 secure hash standard (DFIPS 180-2) implemented
using optimized ARM assembler and NEON, when available.
config CRYPTO_SHA512_ARM
tristate "SHA-384/512 digest algorithm (ARM-asm and NEON)"
select CRYPTO_HASH
depends on !CPU_V7M
help
SHA-512 secure hash standard (DFIPS 180-2) implemented
using optimized ARM assembler and NEON, when available.
config CRYPTO_BLAKE2S_ARM
bool "BLAKE2s digest algorithm (ARM)"
select CRYPTO_ARCH_HAVE_LIB_BLAKE2S
help
BLAKE2s digest algorithm optimized with ARM scalar instructions. This
is faster than the generic implementations of BLAKE2s and BLAKE2b, but
slower than the NEON implementation of BLAKE2b. (There is no NEON
implementation of BLAKE2s, since NEON doesn't really help with it.)
config CRYPTO_BLAKE2B_NEON
tristate "BLAKE2b digest algorithm (ARM NEON)"
depends on KERNEL_MODE_NEON
select CRYPTO_BLAKE2B
help
BLAKE2b digest algorithm optimized with ARM NEON instructions.
On ARM processors that have NEON support but not the ARMv8
Crypto Extensions, typically this BLAKE2b implementation is
much faster than SHA-2 and slightly faster than SHA-1.
config CRYPTO_AES_ARM
tristate "Scalar AES cipher for ARM"
select CRYPTO_ALGAPI
select CRYPTO_AES
help
Use optimized AES assembler routines for ARM platforms.
On ARM processors without the Crypto Extensions, this is the
fastest AES implementation for single blocks. For multiple
blocks, the NEON bit-sliced implementation is usually faster.
This implementation may be vulnerable to cache timing attacks,
since it uses lookup tables. However, as countermeasures it
disables IRQs and preloads the tables; it is hoped this makes
such attacks very difficult.
config CRYPTO_AES_ARM_BS
tristate "Bit sliced AES using NEON instructions"
depends on KERNEL_MODE_NEON
select CRYPTO_SKCIPHER
select CRYPTO_LIB_AES
select CRYPTO_AES
select CRYPTO_CBC
select CRYPTO_SIMD
help
Use a faster and more secure NEON based implementation of AES in CBC,
CTR and XTS modes
Bit sliced AES gives around 45% speedup on Cortex-A15 for CTR mode
and for XTS mode encryption, CBC and XTS mode decryption speedup is
around 25%. (CBC encryption speed is not affected by this driver.)
This implementation does not rely on any lookup tables so it is
believed to be invulnerable to cache timing attacks.
config CRYPTO_AES_ARM_CE
tristate "Accelerated AES using ARMv8 Crypto Extensions"
depends on KERNEL_MODE_NEON
select CRYPTO_SKCIPHER
select CRYPTO_LIB_AES
select CRYPTO_SIMD
help
Use an implementation of AES in CBC, CTR and XTS modes that uses
ARMv8 Crypto Extensions
config CRYPTO_GHASH_ARM_CE
tristate "PMULL-accelerated GHASH using NEON/ARMv8 Crypto Extensions"
depends on KERNEL_MODE_NEON
select CRYPTO_HASH
select CRYPTO_CRYPTD
select CRYPTO_GF128MUL
help
Use an implementation of GHASH (used by the GCM AEAD chaining mode)
that uses the 64x64 to 128 bit polynomial multiplication (vmull.p64)
that is part of the ARMv8 Crypto Extensions, or a slower variant that
uses the vmull.p8 instruction that is part of the basic NEON ISA.
config CRYPTO_CRCT10DIF_ARM_CE
tristate "CRCT10DIF digest algorithm using PMULL instructions"
depends on KERNEL_MODE_NEON
depends on CRC_T10DIF
select CRYPTO_HASH
config CRYPTO_CRC32_ARM_CE
tristate "CRC32(C) digest algorithm using CRC and/or PMULL instructions"
depends on KERNEL_MODE_NEON
depends on CRC32
select CRYPTO_HASH
config CRYPTO_CHACHA20_NEON
tristate "NEON and scalar accelerated ChaCha stream cipher algorithms"
select CRYPTO_SKCIPHER
select CRYPTO_ARCH_HAVE_LIB_CHACHA
config CRYPTO_POLY1305_ARM
tristate "Accelerated scalar and SIMD Poly1305 hash implementations"
select CRYPTO_HASH
select CRYPTO_ARCH_HAVE_LIB_POLY1305
config CRYPTO_NHPOLY1305_NEON
tristate "NEON accelerated NHPoly1305 hash function (for Adiantum)"
depends on KERNEL_MODE_NEON
select CRYPTO_NHPOLY1305
config CRYPTO_CURVE25519_NEON
tristate "NEON accelerated Curve25519 scalar multiplication library"
depends on KERNEL_MODE_NEON
select CRYPTO_LIB_CURVE25519_GENERIC
select CRYPTO_ARCH_HAVE_LIB_CURVE25519
endif
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