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authorJussi Kivilinna <jussi.kivilinna@iki.fi>2014-06-09 21:59:54 +0400
committerHerbert Xu <herbert@gondor.apana.org.au>2014-06-20 17:27:58 +0400
commit6574e6c64e971c9adb629e81e497afdb52b1c9df (patch)
treeacfe43924f1dd49e686508b4359eccf4d857bbef /crypto/des_generic.c
parent87131507e1a60c4803d54816b86091490b67ad68 (diff)
downloadlinux-6574e6c64e971c9adb629e81e497afdb52b1c9df.tar.xz
crypto: des_3des - add x86-64 assembly implementation
Patch adds x86_64 assembly implementation of Triple DES EDE cipher algorithm. Two assembly implementations are provided. First is regular 'one-block at time' encrypt/decrypt function. Second is 'three-blocks at time' function that gains performance increase on out-of-order CPUs. tcrypt test results: Intel Core i5-4570: des3_ede-asm vs des3_ede-generic: size ecb-enc ecb-dec cbc-enc cbc-dec ctr-enc ctr-dec 16B 1.21x 1.22x 1.27x 1.36x 1.25x 1.25x 64B 1.98x 1.96x 1.23x 2.04x 2.01x 2.00x 256B 2.34x 2.37x 1.21x 2.40x 2.38x 2.39x 1024B 2.50x 2.47x 1.22x 2.51x 2.52x 2.51x 8192B 2.51x 2.53x 1.21x 2.56x 2.54x 2.55x Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/des_generic.c')
-rw-r--r--crypto/des_generic.c22
1 files changed, 17 insertions, 5 deletions
diff --git a/crypto/des_generic.c b/crypto/des_generic.c
index f6cf63f88468..298d464ab7d2 100644
--- a/crypto/des_generic.c
+++ b/crypto/des_generic.c
@@ -859,13 +859,10 @@ static void des_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
* property.
*
*/
-static int des3_ede_setkey(struct crypto_tfm *tfm, const u8 *key,
- unsigned int keylen)
+int __des3_ede_setkey(u32 *expkey, u32 *flags, const u8 *key,
+ unsigned int keylen)
{
const u32 *K = (const u32 *)key;
- struct des3_ede_ctx *dctx = crypto_tfm_ctx(tfm);
- u32 *expkey = dctx->expkey;
- u32 *flags = &tfm->crt_flags;
if (unlikely(!((K[0] ^ K[2]) | (K[1] ^ K[3])) ||
!((K[2] ^ K[4]) | (K[3] ^ K[5]))) &&
@@ -880,6 +877,17 @@ static int des3_ede_setkey(struct crypto_tfm *tfm, const u8 *key,
return 0;
}
+EXPORT_SYMBOL_GPL(__des3_ede_setkey);
+
+static int des3_ede_setkey(struct crypto_tfm *tfm, const u8 *key,
+ unsigned int keylen)
+{
+ struct des3_ede_ctx *dctx = crypto_tfm_ctx(tfm);
+ u32 *flags = &tfm->crt_flags;
+ u32 *expkey = dctx->expkey;
+
+ return __des3_ede_setkey(expkey, flags, key, keylen);
+}
static void des3_ede_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{
@@ -945,6 +953,8 @@ static void des3_ede_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
static struct crypto_alg des_algs[2] = { {
.cra_name = "des",
+ .cra_driver_name = "des-generic",
+ .cra_priority = 100,
.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
.cra_blocksize = DES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct des_ctx),
@@ -958,6 +968,8 @@ static struct crypto_alg des_algs[2] = { {
.cia_decrypt = des_decrypt } }
}, {
.cra_name = "des3_ede",
+ .cra_driver_name = "des3_ede-generic",
+ .cra_priority = 100,
.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
.cra_blocksize = DES3_EDE_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct des3_ede_ctx),