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| author | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2016-07-14 17:55:28 +0300 |
|---|---|---|
| committer | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2016-07-14 17:55:28 +0300 |
| commit | 962b15470663db11e5c35b86768f1b5d8e600017 (patch) | |
| tree | f85a338e4f58f08ca3f2d7b20588c5b72aeb047d /cipher/cipher-internal.h | |
| parent | 34c64eb03178fbfd34190148fec5a189df2b8f83 (diff) | |
| download | libgcrypt-962b15470663db11e5c35b86768f1b5d8e600017.tar.gz | |
Add ARMv8/AArch32 Crypto Extension implementation of GCM
* cipher/Makefile.am: Add 'cipher-gcm-armv8-aarch32-ce.S'.
* cipher/cipher-gcm-armv8-aarch32-ce.S: New.
* cipher/cipher-gcm.c [GCM_USE_ARM_PMULL]
(_gcry_ghash_setup_armv8_ce_pmull, _gcry_ghash_armv8_ce_pmull)
(ghash_setup_armv8_ce_pmull, ghash_armv8_ce_pmull): New.
(setupM) [GCM_USE_ARM_PMULL]: Enable ARM PMULL implementation if
HWF_ARM_PULL HW feature flag is enabled.
* cipher/cipher-gcm.h (GCM_USE_ARM_PMULL): New.
--
Benchmark on Cortex-A53 (1152 Mhz):
Before:
| nanosecs/byte mebibytes/sec cycles/byte
GMAC_AES | 24.10 ns/B 39.57 MiB/s 27.76 c/B
After (~26x faster):
| nanosecs/byte mebibytes/sec cycles/byte
GMAC_AES | 0.924 ns/B 1032.2 MiB/s 1.06 c/B
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Diffstat (limited to 'cipher/cipher-internal.h')
| -rw-r--r-- | cipher/cipher-internal.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/cipher/cipher-internal.h b/cipher/cipher-internal.h index 9fd1d91f..52504f6b 100644 --- a/cipher/cipher-internal.h +++ b/cipher/cipher-internal.h @@ -72,6 +72,16 @@ # endif #endif /* GCM_USE_INTEL_PCLMUL */ +/* GCM_USE_ARM_PMULL indicates whether to compile GCM with ARMv8 PMULL code. */ +#undef GCM_USE_ARM_PMULL +#if defined(ENABLE_ARM_CRYPTO_SUPPORT) && defined(GCM_USE_TABLES) +# if defined(HAVE_ARM_ARCH_V6) && defined(__ARMEL__) \ + && defined(HAVE_COMPATIBLE_GCC_ARM_PLATFORM_AS) \ + && defined(HAVE_GCC_INLINE_ASM_AARCH32_CRYPTO) +# define GCM_USE_ARM_PMULL 1 +# endif +#endif /* GCM_USE_ARM_PMULL */ + typedef unsigned int (*ghash_fn_t) (gcry_cipher_hd_t c, byte *result, const byte *buf, size_t nblocks); |