56d76c96a9
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>
48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
#ifndef ASM_X86_SERPENT_AVX_H
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#define ASM_X86_SERPENT_AVX_H
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#include <linux/crypto.h>
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#include <crypto/serpent.h>
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#define SERPENT_PARALLEL_BLOCKS 8
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struct serpent_lrw_ctx {
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struct lrw_table_ctx lrw_table;
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struct serpent_ctx serpent_ctx;
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};
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struct serpent_xts_ctx {
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struct serpent_ctx tweak_ctx;
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struct serpent_ctx crypt_ctx;
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};
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asmlinkage void serpent_ecb_enc_8way_avx(struct serpent_ctx *ctx, u8 *dst,
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const u8 *src);
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asmlinkage void serpent_ecb_dec_8way_avx(struct serpent_ctx *ctx, u8 *dst,
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const u8 *src);
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asmlinkage void serpent_cbc_dec_8way_avx(struct serpent_ctx *ctx, u8 *dst,
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const u8 *src);
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asmlinkage void serpent_ctr_8way_avx(struct serpent_ctx *ctx, u8 *dst,
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const u8 *src, le128 *iv);
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asmlinkage void serpent_xts_enc_8way_avx(struct serpent_ctx *ctx, u8 *dst,
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const u8 *src, le128 *iv);
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asmlinkage void serpent_xts_dec_8way_avx(struct serpent_ctx *ctx, u8 *dst,
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const u8 *src, le128 *iv);
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extern void __serpent_crypt_ctr(void *ctx, u128 *dst, const u128 *src,
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le128 *iv);
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extern void serpent_xts_enc(void *ctx, u128 *dst, const u128 *src, le128 *iv);
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extern void serpent_xts_dec(void *ctx, u128 *dst, const u128 *src, le128 *iv);
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extern int lrw_serpent_setkey(struct crypto_tfm *tfm, const u8 *key,
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unsigned int keylen);
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extern void lrw_serpent_exit_tfm(struct crypto_tfm *tfm);
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extern int xts_serpent_setkey(struct crypto_tfm *tfm, const u8 *key,
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unsigned int keylen);
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#endif
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