[337] | 1 | /* wolfmath.h
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| 2 | *
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| 3 | * Copyright (C) 2006-2017 wolfSSL Inc.
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| 4 | *
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| 5 | * This file is part of wolfSSL.
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| 6 | *
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| 7 | * wolfSSL is free software; you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation; either version 2 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * wolfSSL is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with this program; if not, write to the Free Software
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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| 20 | */
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| 21 |
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| 22 | #if defined(HAVE_WOLF_BIGINT) && !defined(WOLF_BIGINT_DEFINED)
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| 23 | /* raw big integer */
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| 24 | typedef struct WC_BIGINT {
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| 25 | byte* buf;
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| 26 | word32 len;
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| 27 | void* heap;
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| 28 | } WC_BIGINT;
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| 29 |
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| 30 | #define WOLF_BIGINT_DEFINED
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| 31 | #endif
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| 32 |
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| 33 |
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| 34 | /* only define functions if mp_int has been declared */
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| 35 | #ifdef MP_INT_DEFINED
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| 36 |
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| 37 | #ifndef __WOLFMATH_H__
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| 38 | #define __WOLFMATH_H__
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| 39 |
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| 40 | /* timing resistance array */
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| 41 | #if !defined(WC_NO_CACHE_RESISTANT) && \
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| 42 | ((defined(HAVE_ECC) && defined(ECC_TIMING_RESISTANT)) || \
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| 43 | (defined(USE_FAST_MATH) && defined(TFM_TIMING_RESISTANT)))
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| 44 |
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| 45 | extern const wolfssl_word wc_off_on_addr[2];
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| 46 | #endif
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| 47 |
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| 48 | /* common math functions */
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| 49 | int get_digit_count(mp_int* a);
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| 50 | mp_digit get_digit(mp_int* a, int n);
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| 51 | int get_rand_digit(WC_RNG* rng, mp_digit* d);
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| 52 | int mp_rand(mp_int* a, int digits, WC_RNG* rng);
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| 53 |
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| 54 |
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| 55 | #ifdef HAVE_WOLF_BIGINT
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| 56 | void wc_bigint_init(WC_BIGINT* a);
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| 57 | int wc_bigint_alloc(WC_BIGINT* a, word32 sz);
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| 58 | int wc_bigint_from_unsigned_bin(WC_BIGINT* a, const byte* in, word32 inlen);
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| 59 | int wc_bigint_to_unsigned_bin(WC_BIGINT* a, byte* out, word32* outlen);
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| 60 | void wc_bigint_zero(WC_BIGINT* a);
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| 61 | void wc_bigint_free(WC_BIGINT* a);
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| 62 |
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| 63 | int wc_mp_to_bigint(mp_int* src, WC_BIGINT* dst);
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| 64 | int wc_bigint_to_mp(WC_BIGINT* src, mp_int* dst);
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| 65 | #endif /* HAVE_WOLF_BIGINT */
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| 66 |
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| 67 | #endif /* __WOLFMATH_H__ */
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| 68 |
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| 69 | #endif /* MP_INT_DEFINED */
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