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authorJoachim Fritschi <jfritschi@freenet.de>2006-06-20 20:59:16 +1000
committerHerbert Xu <herbert@gondor.apana.org.au>2006-09-21 11:16:28 +1000
commitb9f535ffe38f7eb61ac2219d32d97c377b69f70d (patch)
tree57e09481226ab5a25f3938963f8299c9f0cd8439 /crypto
parent758f570ea785a5fbcdca026dfab2e9e1a3f89726 (diff)
downloadlinux-linaro-b9f535ffe38f7eb61ac2219d32d97c377b69f70d.tar.gz
[CRYPTO] twofish: i586 assembly version
The patch passed the trycpt tests and automated filesystem tests. This rewrite resulted in some nice perfomance increase over my last patch. Short summary of the tcrypt benchmarks: Twofish Assembler vs. Twofish C (256bit 8kb block CBC) encrypt: -33% Cycles decrypt: -45% Cycles Twofish Assembler vs. AES Assembler (128bit 8kb block CBC) encrypt: +3% Cycles decrypt: -22% Cycles Twofish Assembler vs. AES Assembler (256bit 8kb block CBC) encrypt: -20% Cycles decrypt: -36% Cycles Full Output: http://homepages.tu-darmstadt.de/~fritschi/twofish/tcrypt-speed-twofish-asm-i586.txt http://homepages.tu-darmstadt.de/~fritschi/twofish/tcrypt-speed-twofish-c-i586.txt http://homepages.tu-darmstadt.de/~fritschi/twofish/tcrypt-speed-aes-asm-i586.txt Here is another bonnie++ benchmark with encrypted filesystems. All runs with the twofish assembler modules max out the drivespeed. It should give some idea what the module can do for encrypted filesystem performance even though you can't see the full numbers. http://homepages.tu-darmstadt.de/~fritschi/twofish/output_20060611_205432_x86.html Signed-off-by: Joachim Fritschi <jfritschi@freenet.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/Kconfig15
1 files changed, 15 insertions, 0 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 5472f693e6e..306738ceecb 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -150,6 +150,21 @@ config CRYPTO_TWOFISH_COMMON
Common parts of the Twofish cipher algorithm shared by the
generic c and the assembler implementations.
+config CRYPTO_TWOFISH_586
+ tristate "Twofish cipher algorithms (i586)"
+ depends on CRYPTO && ((X86 || UML_X86) && !64BIT)
+ select CRYPTO_TWOFISH_COMMON
+ help
+ Twofish cipher algorithm.
+
+ 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.
+
+ See also:
+ <http://www.schneier.com/twofish.html>
+
config CRYPTO_SERPENT
tristate "Serpent cipher algorithm"
depends on CRYPTO