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authorJussi Kivilinna <jussi.kivilinna@iki.fi>2013-04-13 13:46:50 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2013-04-25 21:09:05 +0800
commitcf1521a1a5e21fd1e79a458605c4282fbfbbeee2 (patch)
treea7c1fb6d047c75170ddadd0dffe40055167e9c02 /crypto
parent604880107010a1e5794552d184cd5471ea31b973 (diff)
downloadvexpress-lsk-cf1521a1a5e21fd1e79a458605c4282fbfbbeee2.tar.gz
crypto: twofish - add AVX2/x86_64 assembler implementation of twofish cipher
Patch adds AVX2/x86-64 implementation of Twofish cipher, requiring 16 parallel blocks for input (256 bytes). Table look-ups are performed using vpgatherdd instruction directly from vector registers and thus should be faster than earlier implementations. Implementation also uses 256-bit wide YMM registers, which should give additional speed up compared to the AVX implementation. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/Kconfig24
-rw-r--r--crypto/testmgr.c12
2 files changed, 36 insertions, 0 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 6b9564f9116..1ba48ddd4da 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1250,6 +1250,30 @@ config CRYPTO_TWOFISH_AVX_X86_64
See also:
<http://www.schneier.com/twofish.html>
+config CRYPTO_TWOFISH_AVX2_X86_64
+ tristate "Twofish cipher algorithm (x86_64/AVX2)"
+ depends on X86 && 64BIT
+ select CRYPTO_ALGAPI
+ select CRYPTO_CRYPTD
+ select CRYPTO_ABLK_HELPER_X86
+ select CRYPTO_GLUE_HELPER_X86
+ select CRYPTO_TWOFISH_COMMON
+ select CRYPTO_TWOFISH_X86_64
+ select CRYPTO_TWOFISH_X86_64_3WAY
+ select CRYPTO_TWOFISH_AVX_X86_64
+ select CRYPTO_LRW
+ select CRYPTO_XTS
+ help
+ Twofish cipher algorithm (x86_64/AVX2).
+
+ 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>
+
comment "Compression"
config CRYPTO_DEFLATE
diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index f3effb42531..fea7841dd6f 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -1651,6 +1651,9 @@ static const struct alg_test_desc alg_test_descs[] = {
.alg = "__cbc-twofish-avx",
.test = alg_test_null,
}, {
+ .alg = "__cbc-twofish-avx2",
+ .test = alg_test_null,
+ }, {
.alg = "__driver-cbc-aes-aesni",
.test = alg_test_null,
.fips_allowed = 1,
@@ -1676,6 +1679,9 @@ static const struct alg_test_desc alg_test_descs[] = {
.alg = "__driver-cbc-twofish-avx",
.test = alg_test_null,
}, {
+ .alg = "__driver-cbc-twofish-avx2",
+ .test = alg_test_null,
+ }, {
.alg = "__driver-ecb-aes-aesni",
.test = alg_test_null,
.fips_allowed = 1,
@@ -1701,6 +1707,9 @@ static const struct alg_test_desc alg_test_descs[] = {
.alg = "__driver-ecb-twofish-avx",
.test = alg_test_null,
}, {
+ .alg = "__driver-ecb-twofish-avx2",
+ .test = alg_test_null,
+ }, {
.alg = "__ghash-pclmulqdqni",
.test = alg_test_null,
.fips_allowed = 1,
@@ -1985,6 +1994,9 @@ static const struct alg_test_desc alg_test_descs[] = {
.alg = "cryptd(__driver-ecb-twofish-avx)",
.test = alg_test_null,
}, {
+ .alg = "cryptd(__driver-ecb-twofish-avx2)",
+ .test = alg_test_null,
+ }, {
.alg = "cryptd(__driver-gcm-aes-aesni)",
.test = alg_test_null,
.fips_allowed = 1,