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| author | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2013-05-23 11:04:18 +0300 |
|---|---|---|
| committer | Werner Koch <wk@gnupg.org> | 2013-05-23 12:07:36 +0200 |
| commit | 2fd06e207dcea1d8a7f0e7e92f3359615a99421b (patch) | |
| tree | bbebbd2ec43e5b8ac7e40331f68fe27832ca01dd /src/cipher.h | |
| parent | c85501af8222913f0a1e20e77fceb88e93417925 (diff) | |
| download | libgcrypt-2fd06e207dcea1d8a7f0e7e92f3359615a99421b.tar.gz | |
serpent: add SSE2 accelerated amd64 implementation
* configure.ac (serpent): Add 'serpent-sse2-amd64.lo'.
* cipher/Makefile.am (EXTRA_libcipher_la_SOURCES): Add
'serpent-sse2-amd64.S'.
* cipher/cipher.c (gcry_cipher_open) [USE_SERPENT]: Register bulk
functions for CBC-decryption and CTR-mode.
* cipher/serpent.c (USE_SSE2): New macro.
[USE_SSE2] (_gcry_serpent_sse2_ctr_enc, _gcry_serpent_sse2_cbc_dec):
New prototypes to assembler functions.
(serpent_setkey): Set 'serpent_init_done' before calling serpent_test.
(_gcry_serpent_ctr_enc): New function.
(_gcry_serpent_cbc_dec): New function.
(selftest_ctr_128): New function.
(selftest_cbc_128): New function.
(selftest): Call selftest_ctr_128 and selftest_cbc_128.
* cipher/serpent-sse2-amd64.S: New file.
* src/cipher.h (_gcry_serpent_ctr_enc): New prototype.
(_gcry_serpent_cbc_dec): New prototype.
--
[v2]: Converted to SSE2, to support all amd64 processors (SSE2 is required
feature by AMD64 SysV ABI).
Patch adds word-sliced SSE2 implementation of Serpent for amd64 for speeding
up parallelizable workloads (CTR mode, CBC mode decryption). Implementation
processes eight blocks in parallel, with two four-block sets interleaved for
out-of-order scheduling.
Speed old vs. new on Intel Core i5-2450M (Sandy-Bridge):
ECB/Stream CBC CFB OFB CTR
--------------- --------------- --------------- --------------- ---------------
SERPENT128 1.00x 0.99x 1.00x 3.98x 1.00x 1.01x 1.00x 1.01x 4.04x 4.04x
Speed old vs. new on AMD Phenom II X6 1055T:
ECB/Stream CBC CFB OFB CTR
--------------- --------------- --------------- --------------- ---------------
SERPENT128 1.02x 1.01x 1.00x 2.83x 1.00x 1.00x 1.00x 1.00x 2.72x 2.72x
Speed old vs. new on Intel Core2 Duo T8100:
ECB/Stream CBC CFB OFB CTR
--------------- --------------- --------------- --------------- ---------------
SERPENT128 1.00x 1.02x 0.97x 4.02x 0.98x 1.01x 0.98x 1.00x 3.82x 3.91x
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Diffstat (limited to 'src/cipher.h')
| -rw-r--r-- | src/cipher.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/cipher.h b/src/cipher.h index 17fec6cf..4e68487b 100644 --- a/src/cipher.h +++ b/src/cipher.h @@ -103,6 +103,13 @@ void _gcry_camellia_cbc_dec (void *context, unsigned char *iv, void *outbuf_arg, const void *inbuf_arg, unsigned int nblocks); +/*-- serpent.c --*/ +void _gcry_serpent_ctr_enc (void *context, unsigned char *ctr, + void *outbuf_arg, const void *inbuf_arg, + unsigned int nblocks); +void _gcry_serpent_cbc_dec (void *context, unsigned char *iv, + void *outbuf_arg, const void *inbuf_arg, + unsigned int nblocks); /*-- dsa.c --*/ void _gcry_register_pk_dsa_progress (gcry_handler_progress_t cbc, void *cb_data); |