From 251496dbfc1be38bc43b49651f3d33c02faccc47 Mon Sep 17 00:00:00 2001 From: Jussi Kivilinna Date: Wed, 9 Nov 2011 16:26:31 +0200 Subject: crypto: serpent - add 4-way parallel i586/SSE2 assembler implementation Patch adds i586/SSE2 assembler implementation of serpent cipher. Assembler functions crypt data in four block chunks. Patch has been tested with tcrypt and automated filesystem tests. Tcrypt benchmarks results (serpent-sse2/serpent_generic speed ratios): Intel Atom N270: size ecb-enc ecb-dec cbc-enc cbc-dec ctr-enc ctr-dec 16 0.95x 1.12x 1.02x 1.07x 0.97x 0.98x 64 1.73x 1.82x 1.08x 1.82x 1.72x 1.73x 256 2.08x 2.00x 1.04x 2.07x 1.99x 2.01x 1024 2.28x 2.18x 1.05x 2.23x 2.17x 2.20x 8192 2.28x 2.13x 1.05x 2.23x 2.18x 2.20x Full output: http://koti.mbnet.fi/axh/kernel/crypto/atom-n270/serpent-generic.txt http://koti.mbnet.fi/axh/kernel/crypto/atom-n270/serpent-sse2.txt Userspace test results: Encryption/decryption of sse2-i586 vs generic on Intel Atom N270: encrypt: 2.35x decrypt: 2.54x Encryption/decryption of sse2-i586 vs generic on AMD Phenom II: encrypt: 1.82x decrypt: 2.51x Encryption/decryption of sse2-i586 vs generic on Intel Xeon E7330: encrypt: 2.99x decrypt: 3.48x Signed-off-by: Jussi Kivilinna Signed-off-by: Herbert Xu --- crypto/Kconfig | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'crypto') diff --git a/crypto/Kconfig b/crypto/Kconfig index 2df61e4..16e0c13 100644 --- a/crypto/Kconfig +++ b/crypto/Kconfig @@ -783,6 +783,23 @@ config CRYPTO_SERPENT_SSE2_X86_64 See also: +config CRYPTO_SERPENT_SSE2_586 + tristate "Serpent cipher algorithm (i586/SSE2)" + depends on X86 && !64BIT + select CRYPTO_ALGAPI + select CRYPTO_SERPENT + help + Serpent cipher algorithm, by Anderson, Biham & Knudsen. + + Keys are allowed to be from 0 to 256 bits in length, in steps + of 8 bits. + + This module provides Serpent cipher algorithm that processes four + blocks parallel using SSE2 instruction set. + + See also: + + config CRYPTO_TEA tristate "TEA, XTEA and XETA cipher algorithms" select CRYPTO_ALGAPI -- cgit v1.1