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| author | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2013-10-27 14:07:59 +0200 |
|---|---|---|
| committer | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2013-10-28 16:19:09 +0200 |
| commit | 2cb6e1f323d24359b1c5b113be5c2f79a2a4cded (patch) | |
| tree | 344c148104db2f032e5f227615b1ff6b39f910c4 /doc | |
| parent | 3ff9d2571c18cd7a34359f9c60a10d3b0f932b23 (diff) | |
| download | libgcrypt-2cb6e1f323d24359b1c5b113be5c2f79a2a4cded.tar.gz | |
Add ARM NEON assembly implementation of Serpent
* cipher/Makefile.am: Add 'serpent-armv7-neon.S'.
* cipher/serpent-armv7-neon.S: New.
* cipher/serpent.c (USE_NEON): New macro.
(serpent_context_t) [USE_NEON]: Add 'use_neon'.
[USE_NEON] (_gcry_serpent_neon_ctr_enc, _gcry_serpent_neon_cfb_dec)
(_gcry_serpent_neon_cbc_dec): New prototypes.
(serpent_setkey_internal) [USE_NEON]: Detect NEON support.
(_gcry_serpent_neon_ctr_enc, _gcry_serpent_neon_cfb_dec)
(_gcry_serpent_neon_cbc_dec) [USE_NEON]: Use NEON implementations
to process eight blocks in parallel.
* configure.ac [neonsupport]: Add 'serpent-armv7-neon.lo'.
--
Patch adds ARM NEON optimized implementation of Serpent cipher
to speed up parallelizable bulk operations.
Benchmarks on ARM Cortex-A8 (armhf, 1008 Mhz):
Old:
SERPENT128 | nanosecs/byte mebibytes/sec cycles/byte
CBC dec | 43.53 ns/B 21.91 MiB/s 43.88 c/B
CFB dec | 44.77 ns/B 21.30 MiB/s 45.13 c/B
CTR enc | 45.21 ns/B 21.10 MiB/s 45.57 c/B
CTR dec | 45.21 ns/B 21.09 MiB/s 45.57 c/B
New:
SERPENT128 | nanosecs/byte mebibytes/sec cycles/byte
CBC dec | 26.26 ns/B 36.32 MiB/s 26.47 c/B
CFB dec | 26.21 ns/B 36.38 MiB/s 26.42 c/B
CTR enc | 26.20 ns/B 36.40 MiB/s 26.41 c/B
CTR dec | 26.20 ns/B 36.40 MiB/s 26.41 c/B
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Diffstat (limited to 'doc')
0 files changed, 0 insertions, 0 deletions