| yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame^] | 1 | /* wolfmath.h |
| 2 | * |
| 3 | * Copyright (C) 2006-2021 wolfSSL Inc. |
| 4 | * |
| 5 | * This file is part of wolfSSL. |
| 6 | * |
| 7 | * wolfSSL is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * wolfSSL is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA |
| 20 | */ |
| 21 | |
| 22 | /* |
| 23 | DESCRIPTION |
| 24 | This library provides big integer math functions. |
| 25 | |
| 26 | */ |
| 27 | #ifndef __WOLFMATH_H__ |
| 28 | #define __WOLFMATH_H__ |
| 29 | |
| 30 | #ifdef __cplusplus |
| 31 | extern "C" { |
| 32 | #endif |
| 33 | |
| 34 | #ifdef WOLFSSL_PUBLIC_MP |
| 35 | #define MP_API WOLFSSL_API |
| 36 | #else |
| 37 | #define MP_API WOLFSSL_LOCAL |
| 38 | #endif |
| 39 | |
| 40 | #ifndef MIN |
| 41 | #define MIN(x,y) ((x)<(y)?(x):(y)) |
| 42 | #endif |
| 43 | |
| 44 | #ifndef MAX |
| 45 | #define MAX(x,y) ((x)>(y)?(x):(y)) |
| 46 | #endif |
| 47 | |
| 48 | /* timing resistance array */ |
| 49 | #if !defined(WC_NO_CACHE_RESISTANT) && \ |
| 50 | ((defined(HAVE_ECC) && defined(ECC_TIMING_RESISTANT)) || \ |
| 51 | (defined(USE_FAST_MATH) && defined(TFM_TIMING_RESISTANT))) |
| 52 | |
| 53 | extern const wc_ptr_t wc_off_on_addr[2]; |
| 54 | #endif |
| 55 | |
| 56 | |
| 57 | /* common math functions */ |
| 58 | MP_API int get_digit_count(const mp_int* a); |
| 59 | MP_API mp_digit get_digit(const mp_int* a, int n); |
| 60 | MP_API int get_rand_digit(WC_RNG* rng, mp_digit* d); |
| 61 | |
| 62 | WOLFSSL_API int mp_cond_copy(mp_int* a, int copy, mp_int* b); |
| 63 | WOLFSSL_API int mp_rand(mp_int* a, int digits, WC_RNG* rng); |
| 64 | |
| 65 | #define WC_TYPE_HEX_STR 1 |
| 66 | #define WC_TYPE_UNSIGNED_BIN 2 |
| 67 | #if defined(WOLFSSL_QNX_CAAM) |
| 68 | #define WC_TYPE_BLACK_KEY 3 |
| 69 | #endif |
| 70 | |
| 71 | WOLFSSL_API int wc_export_int(mp_int* mp, byte* buf, word32* len, |
| 72 | word32 keySz, int encType); |
| 73 | |
| 74 | #ifdef HAVE_WOLF_BIGINT |
| 75 | #if !defined(WOLF_BIGINT_DEFINED) |
| 76 | /* raw big integer */ |
| 77 | typedef struct WC_BIGINT { |
| 78 | byte* buf; |
| 79 | word32 len; |
| 80 | void* heap; |
| 81 | } WC_BIGINT; |
| 82 | #define WOLF_BIGINT_DEFINED |
| 83 | #endif |
| 84 | |
| 85 | WOLFSSL_LOCAL void wc_bigint_init(WC_BIGINT* a); |
| 86 | WOLFSSL_LOCAL int wc_bigint_alloc(WC_BIGINT* a, word32 sz); |
| 87 | WOLFSSL_LOCAL int wc_bigint_from_unsigned_bin(WC_BIGINT* a, const byte* in, word32 inlen); |
| 88 | WOLFSSL_LOCAL int wc_bigint_to_unsigned_bin(WC_BIGINT* a, byte* out, word32* outlen); |
| 89 | WOLFSSL_LOCAL void wc_bigint_zero(WC_BIGINT* a); |
| 90 | WOLFSSL_LOCAL void wc_bigint_free(WC_BIGINT* a); |
| 91 | |
| 92 | WOLFSSL_LOCAL int wc_mp_to_bigint(mp_int* src, WC_BIGINT* dst); |
| 93 | WOLFSSL_LOCAL int wc_mp_to_bigint_sz(mp_int* src, WC_BIGINT* dst, word32 sz); |
| 94 | WOLFSSL_LOCAL int wc_bigint_to_mp(WC_BIGINT* src, mp_int* dst); |
| 95 | #endif /* HAVE_WOLF_BIGINT */ |
| 96 | |
| 97 | |
| 98 | #ifdef __cplusplus |
| 99 | } /* extern "C" */ |
| 100 | #endif |
| 101 | |
| 102 | #endif /* __WOLFMATH_H__ */ |