ssh lib
Diff: wolfcrypt/wolfmath.h
- Revision:
- 0:1387ff3eed4a
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/wolfcrypt/wolfmath.h Wed Nov 20 13:28:01 2019 +0000 @@ -0,0 +1,71 @@ +/* wolfmath.h + * + * Copyright (C) 2006-2017 wolfSSL Inc. + * + * This file is part of wolfSSL. + * + * wolfSSL is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * wolfSSL is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA + */ + +#if defined(HAVE_WOLF_BIGINT) && !defined(WOLF_BIGINT_DEFINED) + /* raw big integer */ + typedef struct WC_BIGINT { + byte* buf; + word32 len; + void* heap; + } WC_BIGINT; + + #define WOLF_BIGINT_DEFINED +#endif + + +/* only define functions if mp_int has been declared */ +#ifdef MP_INT_DEFINED + +#ifndef __WOLFMATH_H__ +#define __WOLFMATH_H__ + + /* timing resistance array */ + #if !defined(WC_NO_CACHE_RESISTANT) && \ + ((defined(HAVE_ECC) && defined(ECC_TIMING_RESISTANT)) || \ + (defined(USE_FAST_MATH) && defined(TFM_TIMING_RESISTANT))) + + extern const wolfssl_word wc_off_on_addr[2]; + #endif + + /* common math functions */ + int get_digit_count(mp_int* a); + mp_digit get_digit(mp_int* a, int n); + int get_rand_digit(WC_RNG* rng, mp_digit* d); + int mp_rand(mp_int* a, int digits, WC_RNG* rng); + + + #ifdef HAVE_WOLF_BIGINT + void wc_bigint_init(WC_BIGINT* a); + int wc_bigint_alloc(WC_BIGINT* a, word32 sz); + int wc_bigint_from_unsigned_bin(WC_BIGINT* a, const byte* in, word32 inlen); + int wc_bigint_to_unsigned_bin(WC_BIGINT* a, byte* out, word32* outlen); + void wc_bigint_zero(WC_BIGINT* a); + void wc_bigint_free(WC_BIGINT* a); + + int wc_mp_to_bigint(mp_int* src, WC_BIGINT* dst); + int wc_mp_to_bigint_sz(mp_int* src, WC_BIGINT* dst, word32 sz); + int wc_bigint_to_mp(WC_BIGINT* src, mp_int* dst); + #endif /* HAVE_WOLF_BIGINT */ + +#endif /* __WOLFMATH_H__ */ + +#endif /* MP_INT_DEFINED */ +