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authorJohannes Goetzfried <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>2012-05-28 15:54:24 +0200
committerHerbert Xu <herbert@gondor.apana.org.au>2012-06-12 16:46:07 +0800
commit107778b592576c0c8e8d2ca7a2aa5415a4908223 (patch)
tree0e07f6abd2acaf69bf25efacf520584d748c860b /crypto/Kconfig
parent4d03c5047a07a62563e1a8fa798ea258f048bfde (diff)
downloadlinux-linaro-stable-107778b592576c0c8e8d2ca7a2aa5415a4908223.tar.gz
crypto: twofish - add x86_64/avx assembler implementation
This patch adds a x86_64/avx assembler implementation of the Twofish block cipher. The implementation processes eight blocks in parallel (two 4 block chunk AVX operations). The table-lookups are done in general-purpose registers. For small blocksizes the 3way-parallel functions from the twofish-x86_64-3way module are called. A good performance increase is provided for blocksizes greater or equal to 128B. Patch has been tested with tcrypt and automated filesystem tests. Tcrypt benchmark results: Intel Core i5-2500 CPU (fam:6, model:42, step:7) twofish-avx-x86_64 vs. twofish-x86_64-3way 128bit key: (lrw:256bit) (xts:256bit) size ecb-enc ecb-dec cbc-enc cbc-dec ctr-enc ctr-dec lrw-enc lrw-dec xts-enc xts-dec 16B 0.96x 0.97x 1.00x 0.95x 0.97x 0.97x 0.96x 0.95x 0.95x 0.98x 64B 0.99x 0.99x 1.00x 0.99x 0.98x 0.98x 0.99x 0.98x 0.99x 0.98x 256B 1.20x 1.21x 1.00x 1.19x 1.15x 1.14x 1.19x 1.20x 1.18x 1.19x 1024B 1.29x 1.30x 1.00x 1.28x 1.23x 1.24x 1.26x 1.28x 1.26x 1.27x 8192B 1.31x 1.32x 1.00x 1.31x 1.25x 1.25x 1.28x 1.29x 1.28x 1.30x 256bit key: (lrw:384bit) (xts:512bit) size ecb-enc ecb-dec cbc-enc cbc-dec ctr-enc ctr-dec lrw-enc lrw-dec xts-enc xts-dec 16B 0.96x 0.96x 1.00x 0.96x 0.97x 0.98x 0.95x 0.95x 0.95x 0.96x 64B 1.00x 0.99x 1.00x 0.98x 0.98x 1.01x 0.98x 0.98x 0.98x 0.98x 256B 1.20x 1.21x 1.00x 1.21x 1.15x 1.15x 1.19x 1.20x 1.18x 1.19x 1024B 1.29x 1.30x 1.00x 1.28x 1.23x 1.23x 1.26x 1.27x 1.26x 1.27x 8192B 1.31x 1.33x 1.00x 1.31x 1.26x 1.26x 1.29x 1.29x 1.28x 1.30x twofish-avx-x86_64 vs aes-asm (8kB block): 128bit 256bit ecb-enc 1.19x 1.63x ecb-dec 1.18x 1.62x cbc-enc 0.75x 1.03x cbc-dec 1.23x 1.67x ctr-enc 1.24x 1.65x ctr-dec 1.24x 1.65x lrw-enc 1.15x 1.53x lrw-dec 1.14x 1.52x xts-enc 1.16x 1.56x xts-dec 1.16x 1.56x Signed-off-by: Johannes Goetzfried <Johannes.Goetzfried@informatik.stud.uni-erlangen.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/Kconfig')
-rw-r--r--crypto/Kconfig24
1 files changed, 24 insertions, 0 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 8e84225c096b..e00a4e49e013 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -913,6 +913,30 @@ config CRYPTO_TWOFISH_X86_64_3WAY
See also:
<http://www.schneier.com/twofish.html>
+config CRYPTO_TWOFISH_AVX_X86_64
+ tristate "Twofish cipher algorithm (x86_64/AVX)"
+ depends on X86 && 64BIT
+ select CRYPTO_ALGAPI
+ select CRYPTO_CRYPTD
+ select CRYPTO_TWOFISH_COMMON
+ select CRYPTO_TWOFISH_X86_64
+ select CRYPTO_TWOFISH_X86_64_3WAY
+ select CRYPTO_LRW
+ select CRYPTO_XTS
+ help
+ Twofish cipher algorithm (x86_64/AVX).
+
+ Twofish was submitted as an AES (Advanced Encryption Standard)
+ candidate cipher by researchers at CounterPane Systems. It is a
+ 16 round block cipher supporting key sizes of 128, 192, and 256
+ bits.
+
+ This module provides the Twofish cipher algorithm that processes
+ eight blocks parallel using the AVX Instruction Set.
+
+ See also:
+ <http://www.schneier.com/twofish.html>
+
comment "Compression"
config CRYPTO_DEFLATE