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authorJussi Kivilinna <jussi.kivilinna@iki.fi>2013-04-13 13:46:55 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2013-04-25 21:09:07 +0800
commit56d76c96a9f3e39ab733c5643b3ce5a1d4be242a (patch)
tree7922fedc46cba8320671d4eefebf7a4f27adcc77 /arch/x86/include/asm/crypto
parentcf1521a1a5e21fd1e79a458605c4282fbfbbeee2 (diff)
crypto: serpent - add AVX2/x86_64 assembler implementation of serpent cipher
Patch adds AVX2/x86-64 implementation of Serpent cipher, requiring 16 parallel blocks for input (256 bytes). Implementation is based on the AVX implementation and extends to use the 256-bit wide YMM registers. Since serpent does not use table look-ups, this implementation should be close to two times faster than 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 'arch/x86/include/asm/crypto')
-rw-r--r--arch/x86/include/asm/crypto/serpent-avx.h24
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/x86/include/asm/crypto/serpent-avx.h b/arch/x86/include/asm/crypto/serpent-avx.h
index 56e79cc57eaf..33c2b8a435da 100644
--- a/arch/x86/include/asm/crypto/serpent-avx.h
+++ b/arch/x86/include/asm/crypto/serpent-avx.h
@@ -6,6 +6,16 @@
#define SERPENT_PARALLEL_BLOCKS 8
+struct serpent_lrw_ctx {
+ struct lrw_table_ctx lrw_table;
+ struct serpent_ctx serpent_ctx;
+};
+
+struct serpent_xts_ctx {
+ struct serpent_ctx tweak_ctx;
+ struct serpent_ctx crypt_ctx;
+};
+
asmlinkage void serpent_ecb_enc_8way_avx(struct serpent_ctx *ctx, u8 *dst,
const u8 *src);
asmlinkage void serpent_ecb_dec_8way_avx(struct serpent_ctx *ctx, u8 *dst,
@@ -21,4 +31,18 @@ asmlinkage void serpent_xts_enc_8way_avx(struct serpent_ctx *ctx, u8 *dst,
asmlinkage void serpent_xts_dec_8way_avx(struct serpent_ctx *ctx, u8 *dst,
const u8 *src, le128 *iv);
+extern void __serpent_crypt_ctr(void *ctx, u128 *dst, const u128 *src,
+ le128 *iv);
+
+extern void serpent_xts_enc(void *ctx, u128 *dst, const u128 *src, le128 *iv);
+extern void serpent_xts_dec(void *ctx, u128 *dst, const u128 *src, le128 *iv);
+
+extern int lrw_serpent_setkey(struct crypto_tfm *tfm, const u8 *key,
+ unsigned int keylen);
+
+extern void lrw_serpent_exit_tfm(struct crypto_tfm *tfm);
+
+extern int xts_serpent_setkey(struct crypto_tfm *tfm, const u8 *key,
+ unsigned int keylen);
+
#endif