wolfmath.h

00001 /* wolfmath.h
00002  *
00003  * Copyright (C) 2006-2016 wolfSSL Inc.
00004  *
00005  * This file is part of wolfSSL.
00006  *
00007  * wolfSSL is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 2 of the License, or
00010  * (at your option) any later version.
00011  *
00012  * wolfSSL is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU General Public License
00018  * along with this program; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
00020  */
00021 
00022 #if defined(HAVE_WOLF_BIGINT) && !defined(WOLF_BIGINT_DEFINED)
00023     /* raw big integer */
00024     typedef struct WC_BIGINT {
00025         byte*   buf;
00026         word32  len;
00027         void*   heap;
00028     } WC_BIGINT;
00029 
00030     #define WOLF_BIGINT_DEFINED
00031 #endif
00032 
00033 
00034 /* only define functions if mp_int has been declared */
00035 #ifdef MP_INT_DEFINED
00036 
00037 #ifndef __WOLFMATH_H__
00038 #define __WOLFMATH_H__
00039 
00040     /* common math functions */
00041     int get_digit_count(mp_int* a);
00042     mp_digit get_digit(mp_int* a, int n);
00043     int get_rand_digit(WC_RNG* rng, mp_digit* d);
00044     int mp_rand(mp_int* a, int digits, WC_RNG* rng);
00045 
00046 
00047     #ifdef HAVE_WOLF_BIGINT
00048         void wc_bigint_init(WC_BIGINT* a);
00049         int wc_bigint_alloc(WC_BIGINT* a, word32 sz);
00050         int wc_bigint_from_unsigned_bin(WC_BIGINT* a, const byte* in, word32 inlen);
00051         int wc_bigint_to_unsigned_bin(WC_BIGINT* a, byte* out, word32* outlen);
00052         void wc_bigint_zero(WC_BIGINT* a);
00053         void wc_bigint_free(WC_BIGINT* a);
00054 
00055         int wc_mp_to_bigint(mp_int* src, WC_BIGINT* dst);
00056         int wc_bigint_to_mp(WC_BIGINT* src, mp_int* dst);
00057     #endif /* HAVE_WOLF_BIGINT */
00058 
00059 #endif /* __WOLFMATH_H__ */
00060 
00061 #endif /* MP_INT_DEFINED */
00062