ARM: 8120/1: crypto: sha512: add ARM NEON implementation
This patch adds ARM NEON assembly implementation of SHA-512 and SHA-384
algorithms.
tcrypt benchmark results on Cortex-A8, sha512-generic vs sha512-neon-asm:
block-size bytes/update old-vs-new
16 16 2.99x
64 16 2.67x
64 64 3.00x
256 16 2.64x
256 64 3.06x
256 256 3.33x
1024 16 2.53x
1024 256 3.39x
1024 1024 3.52x
2048 16 2.50x
2048 256 3.41x
2048 1024 3.54x
2048 2048 3.57x
4096 16 2.49x
4096 256 3.42x
4096 1024 3.56x
4096 4096 3.59x
8192 16 2.48x
8192 256 3.42x
8192 1024 3.56x
8192 4096 3.60x
8192 8192 3.60x
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/crypto/Kconfig b/crypto/Kconfig
index a379dad..749b1e0 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -600,6 +600,21 @@
SHA-512 secure hash standard (DFIPS 180-2) implemented
using sparc64 crypto instructions, when available.
+config CRYPTO_SHA512_ARM_NEON
+ tristate "SHA384 and SHA512 digest algorithm (ARM NEON)"
+ depends on ARM && KERNEL_MODE_NEON && !CPU_BIG_ENDIAN
+ select CRYPTO_SHA512
+ select CRYPTO_HASH
+ help
+ SHA-512 secure hash standard (DFIPS 180-2) implemented
+ using ARM NEON instructions, when available.
+
+ This version of SHA implements a 512 bit hash with 256 bits of
+ security against collision attacks.
+
+ This code also includes SHA-384, a 384 bit hash with 192 bits
+ of security against collision attacks.
+
config CRYPTO_TGR192
tristate "Tiger digest algorithms"
select CRYPTO_HASH