From cf1521a1a5e21fd1e79a458605c4282fbfbbeee2 Mon Sep 17 00:00:00 2001 From: Jussi Kivilinna Date: Sat, 13 Apr 2013 13:46:50 +0300 Subject: 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 Signed-off-by: Herbert Xu --- arch/x86/include/asm/crypto/twofish.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'arch/x86/include') diff --git a/arch/x86/include/asm/crypto/twofish.h b/arch/x86/include/asm/crypto/twofish.h index 878c51ceebb..e655c6029b4 100644 --- a/arch/x86/include/asm/crypto/twofish.h +++ b/arch/x86/include/asm/crypto/twofish.h @@ -28,6 +28,20 @@ asmlinkage void __twofish_enc_blk_3way(struct twofish_ctx *ctx, u8 *dst, asmlinkage void twofish_dec_blk_3way(struct twofish_ctx *ctx, u8 *dst, const u8 *src); +/* 8-way parallel cipher functions */ +asmlinkage void twofish_ecb_enc_8way(struct twofish_ctx *ctx, u8 *dst, + const u8 *src); +asmlinkage void twofish_ecb_dec_8way(struct twofish_ctx *ctx, u8 *dst, + const u8 *src); +asmlinkage void twofish_cbc_dec_8way(struct twofish_ctx *ctx, u8 *dst, + const u8 *src); +asmlinkage void twofish_ctr_8way(struct twofish_ctx *ctx, u8 *dst, + const u8 *src, le128 *iv); +asmlinkage void twofish_xts_enc_8way(struct twofish_ctx *ctx, u8 *dst, + const u8 *src, le128 *iv); +asmlinkage void twofish_xts_dec_8way(struct twofish_ctx *ctx, u8 *dst, + const u8 *src, le128 *iv); + /* helpers from twofish_x86_64-3way module */ extern void twofish_dec_blk_cbc_3way(void *ctx, u128 *dst, const u128 *src); extern void twofish_enc_blk_ctr(void *ctx, u128 *dst, const u128 *src, @@ -43,4 +57,8 @@ extern void lrw_twofish_exit_tfm(struct crypto_tfm *tfm); extern int xts_twofish_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen); +/* helpers from twofish-avx module */ +extern void twofish_xts_enc(void *ctx, u128 *dst, const u128 *src, le128 *iv); +extern void twofish_xts_dec(void *ctx, u128 *dst, const u128 *src, le128 *iv); + #endif /* ASM_X86_TWOFISH_H */ -- cgit v1.2.3