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| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2016-11-20 14:42:01 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-11-28 14:58:05 +0300 |
| commit | 7918ecef073fe80eeb399a37d8d48561864eedf1 (patch) | |
| tree | 036a8a9af759569f280cfe1f8c604a7f07fb0c28 /arch/arm64/crypto/Kconfig | |
| parent | ed424bb3680b6e6167a44c5c195ec8f9aea3ab3b (diff) | |
| download | linux-7918ecef073fe80eeb399a37d8d48561864eedf1.tar.xz | |
crypto: arm64/sha2 - integrate OpenSSL implementations of SHA256/SHA512
This integrates both the accelerated scalar and the NEON implementations
of SHA-224/256 as well as SHA-384/512 from the OpenSSL project.
Relative performance compared to the respective generic C versions:
| SHA256-scalar | SHA256-NEON* | SHA512 |
------------+-----------------+--------------+----------+
Cortex-A53 | 1.63x | 1.63x | 2.34x |
Cortex-A57 | 1.43x | 1.59x | 1.95x |
Cortex-A73 | 1.26x | 1.56x | ? |
The core crypto code was authored by Andy Polyakov of the OpenSSL
project, in collaboration with whom the upstream code was adapted so
that this module can be built from the same version of sha512-armv8.pl.
The version in this patch was taken from OpenSSL commit 32bbb62ea634
("sha/asm/sha512-armv8.pl: fix big-endian support in __KERNEL__ case.")
* The core SHA algorithm is fundamentally sequential, but there is a
secondary transformation involved, called the schedule update, which
can be performed independently. The NEON version of SHA-224/SHA-256
only implements this part of the algorithm using NEON instructions,
the sequential part is always done using scalar instructions.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/arm64/crypto/Kconfig')
| -rw-r--r-- | arch/arm64/crypto/Kconfig | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm64/crypto/Kconfig b/arch/arm64/crypto/Kconfig index 2cf32e9887e1..5f4a617e2957 100644 --- a/arch/arm64/crypto/Kconfig +++ b/arch/arm64/crypto/Kconfig @@ -8,6 +8,14 @@ menuconfig ARM64_CRYPTO 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 |