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bed593c0e8
This adds a scalar implementation of AES, based on the precomputed tables that are exposed by the generic AES code. Since rotates are cheap on arm64, this implementation only uses the 4 core tables (of 1 KB each), and avoids the prerotated ones, reducing the D-cache footprint by 75%. On Cortex-A57, this code manages 13.0 cycles per byte, which is ~34% faster than the generic C code. (Note that this is still >13x slower than the code that uses the optional ARMv8 Crypto Extensions, which manages <1 cycles per byte.) Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
86 lines
2.3 KiB
Plaintext
86 lines
2.3 KiB
Plaintext
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menuconfig ARM64_CRYPTO
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bool "ARM64 Accelerated Cryptographic Algorithms"
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depends on ARM64
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help
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Say Y here to choose from a selection of cryptographic algorithms
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implemented using ARM64 specific CPU features or instructions.
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if ARM64_CRYPTO
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config CRYPTO_SHA256_ARM64
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tristate "SHA-224/SHA-256 digest algorithm for arm64"
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select CRYPTO_HASH
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config CRYPTO_SHA512_ARM64
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tristate "SHA-384/SHA-512 digest algorithm for arm64"
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select CRYPTO_HASH
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config CRYPTO_SHA1_ARM64_CE
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tristate "SHA-1 digest algorithm (ARMv8 Crypto Extensions)"
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depends on ARM64 && KERNEL_MODE_NEON
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select CRYPTO_HASH
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config CRYPTO_SHA2_ARM64_CE
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tristate "SHA-224/SHA-256 digest algorithm (ARMv8 Crypto Extensions)"
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depends on ARM64 && KERNEL_MODE_NEON
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select CRYPTO_HASH
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config CRYPTO_GHASH_ARM64_CE
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tristate "GHASH (for GCM chaining mode) using ARMv8 Crypto Extensions"
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depends on ARM64 && KERNEL_MODE_NEON
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select CRYPTO_HASH
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config CRYPTO_CRCT10DIF_ARM64_CE
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tristate "CRCT10DIF digest algorithm using PMULL instructions"
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depends on KERNEL_MODE_NEON && CRC_T10DIF
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select CRYPTO_HASH
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config CRYPTO_CRC32_ARM64_CE
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tristate "CRC32 and CRC32C digest algorithms using PMULL instructions"
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depends on KERNEL_MODE_NEON && CRC32
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select CRYPTO_HASH
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config CRYPTO_AES_ARM64
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tristate "AES core cipher using scalar instructions"
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select CRYPTO_AES
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config CRYPTO_AES_ARM64_CE
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tristate "AES core cipher using ARMv8 Crypto Extensions"
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depends on ARM64 && KERNEL_MODE_NEON
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select CRYPTO_ALGAPI
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config CRYPTO_AES_ARM64_CE_CCM
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tristate "AES in CCM mode using ARMv8 Crypto Extensions"
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depends on ARM64 && KERNEL_MODE_NEON
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select CRYPTO_ALGAPI
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select CRYPTO_AES_ARM64_CE
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select CRYPTO_AEAD
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config CRYPTO_AES_ARM64_CE_BLK
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tristate "AES in ECB/CBC/CTR/XTS modes using ARMv8 Crypto Extensions"
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depends on ARM64 && KERNEL_MODE_NEON
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select CRYPTO_BLKCIPHER
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select CRYPTO_AES_ARM64_CE
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select CRYPTO_SIMD
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config CRYPTO_AES_ARM64_NEON_BLK
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tristate "AES in ECB/CBC/CTR/XTS modes using NEON instructions"
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depends on ARM64 && KERNEL_MODE_NEON
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select CRYPTO_BLKCIPHER
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select CRYPTO_AES
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select CRYPTO_SIMD
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config CRYPTO_CRC32_ARM64
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tristate "CRC32 and CRC32C using optional ARMv8 instructions"
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depends on ARM64
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select CRYPTO_HASH
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config CRYPTO_CHACHA20_NEON
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tristate "NEON accelerated ChaCha20 symmetric cipher"
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depends on KERNEL_MODE_NEON
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select CRYPTO_BLKCIPHER
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select CRYPTO_CHACHA20
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endif
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