mirror of
https://github.com/torvalds/linux
synced 2024-09-22 03:55:39 +00:00
cc477bf645
This replaces the unwieldy generated implementation of bit-sliced AES in CBC/CTR/XTS modes that originated in the OpenSSL project with a new version that is heavily based on the OpenSSL implementation, but has a number of advantages over the old version: - it does not rely on the scalar AES cipher that also originated in the OpenSSL project and contains redundant lookup tables and key schedule generation routines (which we already have in crypto/aes_generic.) - it uses the same expanded key schedule for encryption and decryption, reducing the size of the per-key data structure by 1696 bytes - it adds an implementation of AES in ECB mode, which can be wrapped by other generic chaining mode implementations - it moves the handling of corner cases that are non critical to performance to the glue layer written in C - it was written directly in assembler rather than generated from a Perl script Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
123 lines
3.6 KiB
Plaintext
123 lines
3.6 KiB
Plaintext
|
|
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_AES_ARM
|
|
tristate "Scalar AES cipher for ARM"
|
|
select CRYPTO_ALGAPI
|
|
select CRYPTO_AES
|
|
help
|
|
Use optimized AES assembler routines for ARM platforms.
|
|
|
|
config CRYPTO_AES_ARM_BS
|
|
tristate "Bit sliced AES using NEON instructions"
|
|
depends on KERNEL_MODE_NEON
|
|
select CRYPTO_BLKCIPHER
|
|
select CRYPTO_SIMD
|
|
select CRYPTO_AES_ARM
|
|
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_BLKCIPHER
|
|
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 ARMv8 Crypto Extensions"
|
|
depends on KERNEL_MODE_NEON
|
|
select CRYPTO_HASH
|
|
select CRYPTO_CRYPTD
|
|
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
|
|
|
|
config CRYPTO_CRCT10DIF_ARM_CE
|
|
tristate "CRCT10DIF digest algorithm using PMULL instructions"
|
|
depends on KERNEL_MODE_NEON && 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 && CRC32
|
|
select CRYPTO_HASH
|
|
|
|
config CRYPTO_CHACHA20_NEON
|
|
tristate "NEON accelerated ChaCha20 symmetric cipher"
|
|
depends on KERNEL_MODE_NEON
|
|
select CRYPTO_BLKCIPHER
|
|
select CRYPTO_CHACHA20
|
|
|
|
endif
|