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crypto: des_3des - add x86-64 assembly implementation

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Patch adds x86_64 assembly implementation of Triple DES EDE cipher algorithm.
Two assembly implementations are provided. First is regular 'one-block at
time' encrypt/decrypt function. Second is 'three-blocks at time' function that
gains performance increase on out-of-order CPUs.

tcrypt test results:

Intel Core i5-4570:

des3_ede-asm vs des3_ede-generic:
size    ecb-enc ecb-dec cbc-enc cbc-dec ctr-enc ctr-dec
16B     1.21x   1.22x   1.27x   1.36x   1.25x   1.25x
64B     1.98x   1.96x   1.23x   2.04x   2.01x   2.00x
256B    2.34x   2.37x   1.21x   2.40x   2.38x   2.39x
1024B   2.50x   2.47x   1.22x   2.51x   2.52x   2.51x
8192B   2.51x   2.53x   1.21x   2.56x   2.54x   2.55x

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Jussi Kivilinna
2014-06-09 20:59:54 +03:00
committed by Herbert Xu
parent 87131507e1
commit 6574e6c64e
6 changed files with 1349 additions and 5 deletions
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include/crypto/des.h
+3
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@@ -16,4 +16,7 @@
extern unsigned long des_ekey(u32 *pe, const u8 *k);
extern int __des3_ede_setkey(u32 *expkey, u32 *flags, const u8 *key,
unsigned int keylen);
#endif /* __CRYPTO_DES_H */