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| author | auth12 <[email protected]> | 2020-07-22 08:40:38 -0700 |
|---|---|---|
| committer | auth12 <[email protected]> | 2020-07-22 08:40:38 -0700 |
| commit | 4ff89e85e74884e8f04edb5c31a94b4323e895e9 (patch) | |
| tree | 65f98ebf9af0d0947e44bf397b1fac0f107d7a2f /client/wolfssl/wolfcrypt/src/wolfmath.c | |
| parent | Client injection. (diff) | |
| download | loader-4ff89e85e74884e8f04edb5c31a94b4323e895e9.tar.xz loader-4ff89e85e74884e8f04edb5c31a94b4323e895e9.zip | |
Removed wolfssl
Diffstat (limited to 'client/wolfssl/wolfcrypt/src/wolfmath.c')
| -rw-r--r-- | client/wolfssl/wolfcrypt/src/wolfmath.c | 381 |
1 files changed, 0 insertions, 381 deletions
diff --git a/client/wolfssl/wolfcrypt/src/wolfmath.c b/client/wolfssl/wolfcrypt/src/wolfmath.c deleted file mode 100644 index 0c17a0a..0000000 --- a/client/wolfssl/wolfcrypt/src/wolfmath.c +++ /dev/null @@ -1,381 +0,0 @@ -/* wolfmath.c - * - * Copyright (C) 2006-2020 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 - */ - - -/* common functions for either math library */ - -#ifdef HAVE_CONFIG_H - #include <config.h> -#endif - -/* in case user set USE_FAST_MATH there */ -#include <wolfssl/wolfcrypt/settings.h> - -#include <wolfssl/wolfcrypt/integer.h> - -#include <wolfssl/wolfcrypt/error-crypt.h> -#include <wolfssl/wolfcrypt/logging.h> - -#if defined(USE_FAST_MATH) || !defined(NO_BIG_INT) - -#ifdef WOLFSSL_ASYNC_CRYPT - #include <wolfssl/wolfcrypt/async.h> -#endif - -#ifdef NO_INLINE - #include <wolfssl/wolfcrypt/misc.h> -#else - #define WOLFSSL_MISC_INCLUDED - #include <wolfcrypt/src/misc.c> -#endif - - -#if !defined(WC_NO_CACHE_RESISTANT) && \ - ((defined(HAVE_ECC) && defined(ECC_TIMING_RESISTANT)) || \ - (defined(USE_FAST_MATH) && defined(TFM_TIMING_RESISTANT))) - - /* all off / all on pointer addresses for constant calculations */ - /* ecc.c uses same table */ - const wolfssl_word wc_off_on_addr[2] = - { - #if defined(WC_64BIT_CPU) - W64LIT(0x0000000000000000), - W64LIT(0xffffffffffffffff) - #elif defined(WC_16BIT_CPU) - 0x0000U, - 0xffffU - #else - /* 32 bit */ - 0x00000000U, - 0xffffffffU - #endif - }; -#endif - - -#if !defined(WOLFSSL_SP_MATH) -int get_digit_count(mp_int* a) -{ - if (a == NULL) - return 0; - - return a->used; -} -#endif - -mp_digit get_digit(mp_int* a, int n) -{ - if (a == NULL) - return 0; - - return (n >= a->used || n < 0) ? 0 : a->dp[n]; -} - -/* Conditionally copy a into b. Performed in constant time. - * - * a MP integer to copy. - * copy On 1, copy a into b. on 0 leave b unchanged. - * b MP integer to copy into. - * returns BAD_FUNC_ARG when a or b is NULL, MEMORY_E when growing b fails and - * MP_OKAY otherwise. - */ -int mp_cond_copy(mp_int* a, int copy, mp_int* b) -{ - int err = MP_OKAY; - int i; - mp_digit mask = (mp_digit)0 - copy; - - if (a == NULL || b == NULL) - err = BAD_FUNC_ARG; - - /* Ensure b has enough space to copy a into */ - if (err == MP_OKAY) - err = mp_grow(b, a->used + 1); - if (err == MP_OKAY) { - /* When mask 0, b is unchanged2 - * When mask all set, b ^ b ^ a = a - */ - /* Conditionaly copy all digits and then number of used diigits. - * get_digit() returns 0 when index greater than available digit. - */ - for (i = 0; i < a->used; i++) { - b->dp[i] ^= (get_digit(a, i) ^ get_digit(b, i)) & mask; - } - for (; i < b->used; i++) { - b->dp[i] ^= (get_digit(a, i) ^ get_digit(b, i)) & mask; - } - b->used ^= (a->used ^ b->used) & (int)mask; - } - - return err; -} - -#ifndef WC_NO_RNG -int get_rand_digit(WC_RNG* rng, mp_digit* d) -{ - return wc_RNG_GenerateBlock(rng, (byte*)d, sizeof(mp_digit)); -} - -#ifdef WC_RSA_BLINDING -int mp_rand(mp_int* a, int digits, WC_RNG* rng) -{ - int ret = 0; - int cnt = digits * sizeof(mp_digit); -#if !defined(USE_FAST_MATH) && !defined(WOLFSSL_SP_MATH) - int i; -#endif - - if (rng == NULL) { - ret = MISSING_RNG_E; - } - else if (a == NULL) { - ret = BAD_FUNC_ARG; - } - -#if !defined(USE_FAST_MATH) && !defined(WOLFSSL_SP_MATH) - /* allocate space for digits */ - if (ret == MP_OKAY) { - ret = mp_set_bit(a, digits * DIGIT_BIT - 1); - } -#else -#if defined(WOLFSSL_SP_MATH) - if ((ret == MP_OKAY) && (digits > SP_INT_DIGITS)) -#else - if ((ret == MP_OKAY) && (digits > FP_SIZE)) -#endif - { - ret = BAD_FUNC_ARG; - } - if (ret == MP_OKAY) { - a->used = digits; - } -#endif - /* fill the data with random bytes */ - if (ret == MP_OKAY) { - ret = wc_RNG_GenerateBlock(rng, (byte*)a->dp, cnt); - } - if (ret == MP_OKAY) { -#if !defined(USE_FAST_MATH) && !defined(WOLFSSL_SP_MATH) - /* Mask down each digit to only bits used */ - for (i = 0; i < a->used; i++) { - a->dp[i] &= MP_MASK; - } -#endif - /* ensure top digit is not zero */ - while ((ret == MP_OKAY) && (a->dp[a->used - 1] == 0)) { - ret = get_rand_digit(rng, &a->dp[a->used - 1]); -#if !defined(USE_FAST_MATH) && !defined(WOLFSSL_SP_MATH) - a->dp[a->used - 1] &= MP_MASK; -#endif - } - } - - return ret; -} -#endif /* WC_RSA_BLINDING */ -#endif - -/* export an mp_int as unsigned char or hex string - * encType is WC_TYPE_UNSIGNED_BIN or WC_TYPE_HEX_STR - * return MP_OKAY on success */ -int wc_export_int(mp_int* mp, byte* buf, word32* len, word32 keySz, - int encType) -{ - int err; - - if (mp == NULL) - return BAD_FUNC_ARG; - - /* check buffer size */ - if (*len < keySz) { - *len = keySz; - return BUFFER_E; - } - - *len = keySz; - XMEMSET(buf, 0, *len); - - if (encType == WC_TYPE_HEX_STR) { - #ifdef WC_MP_TO_RADIX - err = mp_tohex(mp, (char*)buf); - #else - err = NOT_COMPILED_IN; - #endif - } - else { - err = mp_to_unsigned_bin(mp, buf + (keySz - mp_unsigned_bin_size(mp))); - } - - return err; -} - - -#ifdef HAVE_WOLF_BIGINT -void wc_bigint_init(WC_BIGINT* a) -{ - if (a != NULL) { - a->buf = NULL; - a->len = 0; - a->heap = NULL; - } -} - -int wc_bigint_alloc(WC_BIGINT* a, word32 sz) -{ - int err = MP_OKAY; - - if (a == NULL) - return BAD_FUNC_ARG; - - if (sz > 0) { - if (a->buf && sz > a->len) { - wc_bigint_free(a); - } - if (a->buf == NULL) { - a->buf = (byte*)XMALLOC(sz, a->heap, DYNAMIC_TYPE_WOLF_BIGINT); - if (a->buf == NULL) { - err = MP_MEM; - } - } - else { - XMEMSET(a->buf, 0, sz); - } - } - a->len = sz; - - return err; -} - -/* assumes input is big endian format */ -int wc_bigint_from_unsigned_bin(WC_BIGINT* a, const byte* in, word32 inlen) -{ - int err; - - if (a == NULL || in == NULL || inlen == 0) - return BAD_FUNC_ARG; - - err = wc_bigint_alloc(a, inlen); - if (err == 0) { - XMEMCPY(a->buf, in, inlen); - } - - return err; -} - -int wc_bigint_to_unsigned_bin(WC_BIGINT* a, byte* out, word32* outlen) -{ - word32 sz; - - if (a == NULL || out == NULL || outlen == NULL || *outlen == 0) - return BAD_FUNC_ARG; - - /* trim to fit into output buffer */ - sz = a->len; - if (a->len > *outlen) { - WOLFSSL_MSG("wc_bigint_export: Truncating output"); - sz = *outlen; - } - - if (a->buf) { - XMEMCPY(out, a->buf, sz); - } - - *outlen = sz; - - return MP_OKAY; -} - -void wc_bigint_zero(WC_BIGINT* a) -{ - if (a && a->buf) { - ForceZero(a->buf, a->len); - } -} - -void wc_bigint_free(WC_BIGINT* a) -{ - if (a) { - if (a->buf) { - XFREE(a->buf, a->heap, DYNAMIC_TYPE_WOLF_BIGINT); - } - a->buf = NULL; - a->len = 0; - } -} - -/* sz: make sure the buffer is at least that size and zero padded. - * A `sz == 0` will use the size of `src`. - * The calulcates sz is stored into dst->len in `wc_bigint_alloc`. - */ -int wc_mp_to_bigint_sz(mp_int* src, WC_BIGINT* dst, word32 sz) -{ - int err; - word32 x, y; - - if (src == NULL || dst == NULL) - return BAD_FUNC_ARG; - - /* get size of source */ - x = mp_unsigned_bin_size(src); - if (sz < x) - sz = x; - - /* make sure destination is allocated and large enough */ - err = wc_bigint_alloc(dst, sz); - if (err == MP_OKAY) { - - /* leading zero pad */ - y = sz - x; - XMEMSET(dst->buf, 0, y); - - /* export src as unsigned bin to destination buf */ - err = mp_to_unsigned_bin(src, dst->buf + y); - } - - return err; -} - -int wc_mp_to_bigint(mp_int* src, WC_BIGINT* dst) -{ - if (src == NULL || dst == NULL) - return BAD_FUNC_ARG; - - return wc_mp_to_bigint_sz(src, dst, 0); -} - -int wc_bigint_to_mp(WC_BIGINT* src, mp_int* dst) -{ - int err; - - if (src == NULL || dst == NULL) - return BAD_FUNC_ARG; - - if (src->buf == NULL) - return BAD_FUNC_ARG; - - err = mp_read_unsigned_bin(dst, src->buf, src->len); - wc_bigint_free(src); - - return err; -} -#endif /* HAVE_WOLF_BIGINT */ - -#endif /* USE_FAST_MATH || !NO_BIG_INT */ |