linux_dsm_epyc7002/arch/arm64/crypto/Kconfig
Ard Biesheuvel 1abee99eaf crypto: arm64/aes - reimplement bit-sliced ARM/NEON implementation for arm64
This is a reimplementation of the NEON version of the bit-sliced AES
algorithm. This code is heavily based on Andy Polyakov's OpenSSL version
for ARM, which is also available in the kernel. This is an alternative for
the existing NEON implementation for arm64 authored by me, which suffers
from poor performance due to its reliance on the pathologically slow four
register variant of the tbl/tbx NEON instruction.

This version is about ~30% (*) faster than the generic C code, but only in
cases where the input can be 8x interleaved (this is a fundamental property
of bit slicing). For this reason, only the chaining modes ECB, XTS and CTR
are implemented. (The significance of ECB is that it could potentially be
used by other chaining modes)

* Measured on Cortex-A57. Note that this is still an order of magnitude
  slower than the implementations that use the dedicated AES instructions
  introduced in ARMv8, but those are part of an optional extension, and so
  it is good to have a fallback.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-01-13 00:26:51 +08:00

93 lines
2.5 KiB
Plaintext

menuconfig ARM64_CRYPTO
bool "ARM64 Accelerated Cryptographic Algorithms"
depends on ARM64
help
Say Y here to choose from a selection of cryptographic algorithms
implemented using ARM64 specific CPU features or instructions.
if ARM64_CRYPTO
config CRYPTO_SHA256_ARM64
tristate "SHA-224/SHA-256 digest algorithm for arm64"
select CRYPTO_HASH
config CRYPTO_SHA512_ARM64
tristate "SHA-384/SHA-512 digest algorithm for arm64"
select CRYPTO_HASH
config CRYPTO_SHA1_ARM64_CE
tristate "SHA-1 digest algorithm (ARMv8 Crypto Extensions)"
depends on ARM64 && KERNEL_MODE_NEON
select CRYPTO_HASH
config CRYPTO_SHA2_ARM64_CE
tristate "SHA-224/SHA-256 digest algorithm (ARMv8 Crypto Extensions)"
depends on ARM64 && KERNEL_MODE_NEON
select CRYPTO_HASH
config CRYPTO_GHASH_ARM64_CE
tristate "GHASH (for GCM chaining mode) using ARMv8 Crypto Extensions"
depends on ARM64 && KERNEL_MODE_NEON
select CRYPTO_HASH
config CRYPTO_CRCT10DIF_ARM64_CE
tristate "CRCT10DIF digest algorithm using PMULL instructions"
depends on KERNEL_MODE_NEON && CRC_T10DIF
select CRYPTO_HASH
config CRYPTO_CRC32_ARM64_CE
tristate "CRC32 and CRC32C digest algorithms using PMULL instructions"
depends on KERNEL_MODE_NEON && CRC32
select CRYPTO_HASH
config CRYPTO_AES_ARM64
tristate "AES core cipher using scalar instructions"
select CRYPTO_AES
config CRYPTO_AES_ARM64_CE
tristate "AES core cipher using ARMv8 Crypto Extensions"
depends on ARM64 && KERNEL_MODE_NEON
select CRYPTO_ALGAPI
config CRYPTO_AES_ARM64_CE_CCM
tristate "AES in CCM mode using ARMv8 Crypto Extensions"
depends on ARM64 && KERNEL_MODE_NEON
select CRYPTO_ALGAPI
select CRYPTO_AES_ARM64_CE
select CRYPTO_AEAD
config CRYPTO_AES_ARM64_CE_BLK
tristate "AES in ECB/CBC/CTR/XTS modes using ARMv8 Crypto Extensions"
depends on ARM64 && KERNEL_MODE_NEON
select CRYPTO_BLKCIPHER
select CRYPTO_AES_ARM64_CE
select CRYPTO_SIMD
config CRYPTO_AES_ARM64_NEON_BLK
tristate "AES in ECB/CBC/CTR/XTS modes using NEON instructions"
depends on ARM64 && KERNEL_MODE_NEON
select CRYPTO_BLKCIPHER
select CRYPTO_AES
select CRYPTO_SIMD
config CRYPTO_CRC32_ARM64
tristate "CRC32 and CRC32C using optional ARMv8 instructions"
depends on ARM64
select CRYPTO_HASH
config CRYPTO_CHACHA20_NEON
tristate "NEON accelerated ChaCha20 symmetric cipher"
depends on KERNEL_MODE_NEON
select CRYPTO_BLKCIPHER
select CRYPTO_CHACHA20
config CRYPTO_AES_ARM64_BS
tristate "AES in ECB/CBC/CTR/XTS modes using bit-sliced NEON algorithm"
depends on KERNEL_MODE_NEON
select CRYPTO_BLKCIPHER
select CRYPTO_AES_ARM64
select CRYPTO_SIMD
endif