| 1 | /* |
| 2 | * Carry-less multiply operations. |
| 3 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 4 | * |
| 5 | * Copyright (C) 2023 Linaro, Ltd. |
| 6 | */ |
| 7 | |
| 8 | #ifndef CRYPTO_CLMUL_H |
| 9 | #define CRYPTO_CLMUL_H |
| 10 | |
| 11 | #include "qemu/int128.h" |
| 12 | #include "host/crypto/clmul.h" |
| 13 | |
| 14 | /** |
| 15 | * clmul_8x8_low: |
| 16 | * |
| 17 | * Perform eight 8x8->8 carry-less multiplies. |
| 18 | */ |
| 19 | uint64_t clmul_8x8_low(uint64_t, uint64_t); |
| 20 | |
| 21 | /** |
| 22 | * clmul_8x4_even: |
| 23 | * |
| 24 | * Perform four 8x8->16 carry-less multiplies. |
| 25 | * The odd bytes of the inputs are ignored. |
| 26 | */ |
| 27 | uint64_t clmul_8x4_even(uint64_t, uint64_t); |
| 28 | |
| 29 | /** |
| 30 | * clmul_8x4_odd: |
| 31 | * |
| 32 | * Perform four 8x8->16 carry-less multiplies. |
| 33 | * The even bytes of the inputs are ignored. |
| 34 | */ |
| 35 | uint64_t clmul_8x4_odd(uint64_t, uint64_t); |
| 36 | |
| 37 | /** |
| 38 | * clmul_8x4_packed: |
| 39 | * |
| 40 | * Perform four 8x8->16 carry-less multiplies. |
| 41 | */ |
| 42 | uint64_t clmul_8x4_packed(uint32_t, uint32_t); |
| 43 | |
| 44 | /** |
| 45 | * clmul_16x2_even: |
| 46 | * |
| 47 | * Perform two 16x16->32 carry-less multiplies. |
| 48 | * The odd words of the inputs are ignored. |
| 49 | */ |
| 50 | uint64_t clmul_16x2_even(uint64_t, uint64_t); |
| 51 | |
| 52 | /** |
| 53 | * clmul_16x2_odd: |
| 54 | * |
| 55 | * Perform two 16x16->32 carry-less multiplies. |
| 56 | * The even words of the inputs are ignored. |
| 57 | */ |
| 58 | uint64_t clmul_16x2_odd(uint64_t, uint64_t); |
| 59 | |
| 60 | /** |
| 61 | * clmul_32: |
| 62 | * |
| 63 | * Perform a 32x32->64 carry-less multiply. |
| 64 | */ |
| 65 | uint64_t clmul_32(uint32_t, uint32_t); |
| 66 | |
| 67 | /** |
| 68 | * clmul_64: |
| 69 | * |
| 70 | * Perform a 64x64->128 carry-less multiply. |
| 71 | */ |
| 72 | Int128 clmul_64_gen(uint64_t, uint64_t); |
| 73 | |
| 74 | static inline Int128 clmul_64(uint64_t a, uint64_t b) |
| 75 | { |
| 76 | if (HAVE_CLMUL_ACCEL) { |
| 77 | return clmul_64_accel(a, b); |
| 78 | } else { |
| 79 | return clmul_64_gen(a, b); |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | #endif /* CRYPTO_CLMUL_H */ |