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crypto: Add generic 8-bit carry-less multiply routines

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Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2023-07-10 15:38:28 +01:00
parent 005ad32358
commit 07f348d77c
3 changed files with 107 additions and 3 deletions
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41
include/crypto/clmul.h Normal file
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/*
* Carry-less multiply operations.
* SPDX-License-Identifier: GPL-2.0-or-later
*
* Copyright (C) 2023 Linaro, Ltd.
*/
#ifndef CRYPTO_CLMUL_H
#define CRYPTO_CLMUL_H
/**
* clmul_8x8_low:
*
* Perform eight 8x8->8 carry-less multiplies.
*/
uint64_t clmul_8x8_low(uint64_t, uint64_t);
/**
* clmul_8x4_even:
*
* Perform four 8x8->16 carry-less multiplies.
* The odd bytes of the inputs are ignored.
*/
uint64_t clmul_8x4_even(uint64_t, uint64_t);
/**
* clmul_8x4_odd:
*
* Perform four 8x8->16 carry-less multiplies.
* The even bytes of the inputs are ignored.
*/
uint64_t clmul_8x4_odd(uint64_t, uint64_t);
/**
* clmul_8x4_packed:
*
* Perform four 8x8->16 carry-less multiplies.
*/
uint64_t clmul_8x4_packed(uint32_t, uint32_t);
#endif /* CRYPTO_CLMUL_H */