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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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006d0624fa
This implements the SHA-224/256 secure hash algorithm using the AArch32 versions of the ARMv8 Crypto Extensions for SHA2. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
104 lines
3.3 KiB
Text
104 lines
3.3 KiB
Text
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menuconfig ARM_CRYPTO
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bool "ARM Accelerated Cryptographic Algorithms"
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depends on ARM
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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 ARM specific CPU features or instructions.
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if ARM_CRYPTO
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config CRYPTO_SHA1_ARM
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tristate "SHA1 digest algorithm (ARM-asm)"
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select CRYPTO_SHA1
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select CRYPTO_HASH
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help
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SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented
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using optimized ARM assembler.
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config CRYPTO_SHA1_ARM_NEON
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tristate "SHA1 digest algorithm (ARM NEON)"
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depends on KERNEL_MODE_NEON
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select CRYPTO_SHA1_ARM
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select CRYPTO_SHA1
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select CRYPTO_HASH
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help
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SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented
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using optimized ARM NEON assembly, when NEON instructions are
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available.
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config CRYPTO_SHA1_ARM_CE
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tristate "SHA1 digest algorithm (ARM v8 Crypto Extensions)"
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depends on KERNEL_MODE_NEON
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select CRYPTO_SHA1_ARM
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select CRYPTO_SHA1
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select CRYPTO_HASH
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help
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SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented
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using special ARMv8 Crypto Extensions.
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config CRYPTO_SHA2_ARM_CE
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tristate "SHA-224/256 digest algorithm (ARM v8 Crypto Extensions)"
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depends on KERNEL_MODE_NEON
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select CRYPTO_SHA256
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select CRYPTO_HASH
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help
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SHA-256 secure hash standard (DFIPS 180-2) implemented
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using special ARMv8 Crypto Extensions.
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config CRYPTO_SHA512_ARM_NEON
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tristate "SHA384 and SHA512 digest algorithm (ARM NEON)"
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depends on KERNEL_MODE_NEON
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select CRYPTO_SHA512
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select CRYPTO_HASH
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help
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SHA-512 secure hash standard (DFIPS 180-2) implemented
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using ARM NEON instructions, when available.
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This version of SHA implements a 512 bit hash with 256 bits of
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security against collision attacks.
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This code also includes SHA-384, a 384 bit hash with 192 bits
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of security against collision attacks.
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config CRYPTO_AES_ARM
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tristate "AES cipher algorithms (ARM-asm)"
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depends on ARM
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select CRYPTO_ALGAPI
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select CRYPTO_AES
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help
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Use optimized AES assembler routines for ARM platforms.
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AES cipher algorithms (FIPS-197). AES uses the Rijndael
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algorithm.
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Rijndael appears to be consistently a very good performer in
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both hardware and software across a wide range of computing
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environments regardless of its use in feedback or non-feedback
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modes. Its key setup time is excellent, and its key agility is
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good. Rijndael's very low memory requirements make it very well
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suited for restricted-space environments, in which it also
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demonstrates excellent performance. Rijndael's operations are
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among the easiest to defend against power and timing attacks.
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The AES specifies three key sizes: 128, 192 and 256 bits
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See <http://csrc.nist.gov/encryption/aes/> for more information.
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config CRYPTO_AES_ARM_BS
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tristate "Bit sliced AES using NEON instructions"
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depends on KERNEL_MODE_NEON
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select CRYPTO_ALGAPI
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select CRYPTO_AES_ARM
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select CRYPTO_ABLK_HELPER
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help
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Use a faster and more secure NEON based implementation of AES in CBC,
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CTR and XTS modes
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Bit sliced AES gives around 45% speedup on Cortex-A15 for CTR mode
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and for XTS mode encryption, CBC and XTS mode decryption speedup is
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around 25%. (CBC encryption speed is not affected by this driver.)
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This implementation does not rely on any lookup tables so it is
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believed to be invulnerable to cache timing attacks.
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endif
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