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| author | Jussi Kivilinna <jussi.kivilinna@mbnet.fi> | 2011-09-02 01:45:22 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2011-09-22 21:25:26 +1000 |
| commit | 64b94ceae8c16cd1b2800cac83112d3815be5250 (patch) | |
| tree | c7e3384659522cac32dc85a34e4ed722346a0f91 /crypto | |
| parent | 7d47b86cfef808c6580b7603c3f17fcaf27e9d14 (diff) | |
| download | lwn-64b94ceae8c16cd1b2800cac83112d3815be5250.tar.gz lwn-64b94ceae8c16cd1b2800cac83112d3815be5250.zip | |
crypto: blowfish - add x86_64 assembly implementation
Patch adds x86_64 assembly implementation of blowfish. Two set of assembler
functions are provided. First set is regular 'one-block at time'
encrypt/decrypt functions. Second is 'four-block at time' functions that
gain performance increase on out-of-order CPUs. Performance of 4-way
functions should be equal to 1-way functions with in-order CPUs.
Summary of the tcrypt benchmarks:
Blowfish assembler vs blowfish C (256bit 8kb block ECB)
encrypt: 2.2x speed
decrypt: 2.3x speed
Blowfish assembler vs blowfish C (256bit 8kb block CBC)
encrypt: 1.12x speed
decrypt: 2.5x speed
Blowfish assembler vs blowfish C (256bit 8kb block CTR)
encrypt: 2.5x speed
Full output:
http://koti.mbnet.fi/axh/kernel/crypto/tcrypt-speed-blowfish-asm-x86_64.txt
http://koti.mbnet.fi/axh/kernel/crypto/tcrypt-speed-blowfish-c-x86_64.txt
Tests were run on:
vendor_id : AuthenticAMD
cpu family : 16
model : 10
model name : AMD Phenom(tm) II X6 1055T Processor
stepping : 0
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/Kconfig | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig index 108cb98e2170..07637745e234 100644 --- a/crypto/Kconfig +++ b/crypto/Kconfig @@ -620,6 +620,21 @@ config CRYPTO_BLOWFISH_COMMON See also: <http://www.schneier.com/blowfish.html> +config CRYPTO_BLOWFISH_X86_64 + tristate "Blowfish cipher algorithm (x86_64)" + depends on (X86 || UML_X86) && 64BIT + select CRYPTO_ALGAPI + select CRYPTO_BLOWFISH_COMMON + help + Blowfish cipher algorithm (x86_64), by Bruce Schneier. + + This is a variable key length cipher which can use keys from 32 + bits to 448 bits in length. It's fast, simple and specifically + designed for use on "large microprocessors". + + See also: + <http://www.schneier.com/blowfish.html> + config CRYPTO_CAMELLIA tristate "Camellia cipher algorithms" depends on CRYPTO |