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| author | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2014-08-06 20:05:16 +0300 |
|---|---|---|
| committer | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2014-11-02 16:00:48 +0200 |
| commit | c584f44543883346d5a565581ff99a0afce9c5e1 (patch) | |
| tree | 622f1578883dad739eaca3ea222ddc00a1222db7 /configure.ac | |
| parent | 669a83ba86c38b271d85ed4bf1cabc7cc8160583 (diff) | |
| download | libgcrypt-c584f44543883346d5a565581ff99a0afce9c5e1.tar.gz | |
chacha20: add ARMv7/NEON implementation
* cipher/Makefile.am: Add 'chacha20-armv7-neon.S'.
* cipher/chacha20-armv7-neon.S: New.
* cipher/chacha20.c (USE_NEON): New.
[USE_NEON] (_gcry_chacha20_armv7_neon_blocks): New.
(chacha20_do_setkey) [USE_NEON]: Use Neon implementation if
HWF_ARM_NEON flag set.
(selftest): Self-test encrypting buffer byte by byte.
* configure.ac [neonsupport=yes]: Add 'chacha20-armv7-neon.lo'.
--
Add Andrew Moon's public domain ARMv7/NEON implementation of ChaCha20. Original
source is available at: https://github.com/floodyberry/chacha-opt
Benchmark on Cortex-A8 (--cpu-mhz 1008):
Old:
CHACHA20 | nanosecs/byte mebibytes/sec cycles/byte
STREAM enc | 13.45 ns/B 70.92 MiB/s 13.56 c/B
STREAM dec | 13.45 ns/B 70.90 MiB/s 13.56 c/B
New:
CHACHA20 | nanosecs/byte mebibytes/sec cycles/byte
STREAM enc | 6.20 ns/B 153.9 MiB/s 6.25 c/B
STREAM dec | 6.20 ns/B 153.9 MiB/s 6.25 c/B
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index d14b7f6f..60ed0155 100644 --- a/configure.ac +++ b/configure.ac @@ -1822,6 +1822,11 @@ if test "$found" = "1" ; then GCRYPT_CIPHERS="$GCRYPT_CIPHERS chacha20-avx2-amd64.lo" ;; esac + + if test x"$neonsupport" = xyes ; then + # Build with the NEON implementation + GCRYPT_CIPHERS="$GCRYPT_CIPHERS chacha20-armv7-neon.lo" + fi fi case "${host}" in |