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wolfssl/wolfssl/wolfcrypt/wolfmath.h
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Daniel Pouzzner 3a4c2cded0 activate ECCSI and SAKKE in linuxkm: 
wolfssl/wolfcrypt/settings.h: add WC_NO_GLOBAL_OBJECT_POINTERS implicitly in WC_SYM_RELOC_TABLES section of WOLFSSL_LINUXKM setup.

wolfssl/wolfcrypt/wolfmath.h, wolfcrypt/src/wolfmath.c, wolfcrypt/src/sp_int.c, wolfcrypt/src/sakke.c: when WC_NO_GLOBAL_OBJECT_POINTERS, use static local wc_off_on_addr rather than global in wolfmath.c.

wolfcrypt/src/sakke.c:
* in wc_DeriveSakkeSSV(), initialize a[] with explicit XMEMSET() rather than " = {0}", to avoid unmaskable implicit memset() emitted by compiler.
* remove all vector register provisions (SAVE_VECTOR_REGISTERS(), RESTORE_VECTOR_REGISTERS(), ASSERT_SAVED_VECTOR_REGISTERS()).

linuxkm/module_exports.c.template: add includes for eccsi.h and sakke.h.

configure.ac:

* tweak enable-all-crypto setup to make enable_eccsi unconditional alongside enable_fpecc;

* move enable_sakke to be conditional only on !FIPS.

* notably this activates ECCSI and SAKKE on kernel all-crypto builds.

wolfcrypt/test/test.c: WC_*_VAR*() refactors for eccsi_test() and sakke_test().
2026-05-30 15:11:36 -05:00

180 lines
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/* wolfmath.h
*
* Copyright (C) 2006-2026 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 3 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
*/
/*
DESCRIPTION
This library provides big integer math functions.
*/
#ifndef __WOLFMATH_H__
#define __WOLFMATH_H__
#ifdef __cplusplus
extern "C" {
#endif
#include <wolfssl/wolfcrypt/types.h>
#ifdef WOLFSSL_PUBLIC_MP
#define MP_API WOLFSSL_API
#else
#define MP_API WOLFSSL_LOCAL
#endif
#if defined(NO_BIG_INT)
/* MPI globally disabled -- no PK algorithms supported. */
#if defined(USE_FAST_MATH) || defined(USE_INTEGER_HEAP_MATH) || \
defined(WOLFSSL_SP_MATH_ALL) || defined(WOLFSSL_SP_MATH) || \
defined(HAVE_WOLF_BIGINT) || defined(WOLFSSL_EXPORT_INT)
#error Conflicting MPI settings.
#endif
#elif defined(WOLFSSL_SP_MATH_ALL) || defined(WOLFSSL_SP_MATH)
#include <wolfssl/wolfcrypt/sp_int.h>
#elif defined(USE_FAST_MATH)
#include <wolfssl/wolfcrypt/tfm.h>
#elif defined(USE_INTEGER_HEAP_MATH)
#include <wolfssl/wolfcrypt/integer.h>
#else
#include <wolfssl/wolfcrypt/sp_int.h>
#endif
#if !defined(NO_BIG_INT)
#include <wolfssl/wolfcrypt/random.h>
#endif
#if defined(WOLFSSL_MAX3266X) || defined(WOLFSSL_MAX3266X_OLD)
#include <wolfssl/wolfcrypt/port/maxim/max3266x.h>
#endif
#ifndef MIN
#define MIN(x,y) ((x)<(y)?(x):(y))
#endif
#ifndef MAX
#define MAX(x,y) ((x)>(y)?(x):(y))
#endif
/* timing resistance array */
#if !defined(WC_NO_GLOBAL_OBJECT_POINTERS) && \
((!defined(WC_NO_CACHE_RESISTANT) && \
((defined(HAVE_ECC) && defined(ECC_TIMING_RESISTANT)) || \
(defined(USE_FAST_MATH) && defined(TFM_TIMING_RESISTANT)))) || \
((defined(WOLFSSL_SP_MATH_ALL) && !defined(WOLFSSL_RSA_VERIFY_ONLY) && \
!defined(WOLFSSL_RSA_PUBLIC_ONLY)) || !defined(NO_DH) || \
defined(OPENSSL_ALL) && defined(WC_PROTECT_ENCRYPTED_MEM)))
extern const wc_ptr_t wc_off_on_addr[2];
#endif
#if !defined(NO_BIG_INT)
/* common math functions */
#ifdef WOLFSSL_API_PREFIX_MAP
#define mp_get_digit_count wc_mp_get_digit_count
#define mp_get_digit wc_mp_get_digit
#define mp_get_rand_digit wc_mp_get_rand_digit
#define mp_cond_copy wc_mp_cond_copy
#define mp_rand wc_mp_rand
#endif /* WOLFSSL_API_PREFIX_MAP */
MP_API int mp_get_digit_count(const mp_int* a);
MP_API mp_digit mp_get_digit(const mp_int* a, int n);
MP_API int mp_get_rand_digit(WC_RNG* rng, mp_digit* d);
WOLFSSL_LOCAL void mp_reverse(unsigned char *s, int len);
#if defined(HAVE_FIPS) || defined(HAVE_SELFTEST)
#define get_digit_count mp_get_digit_count
#define get_digit mp_get_digit
#define get_rand_digit mp_get_rand_digit
#endif
WOLFSSL_API int mp_cond_copy(mp_int* a, int copy, mp_int* b);
WOLFSSL_API int mp_rand(mp_int* a, int digits, WC_RNG* rng);
#endif
#define WC_TYPE_HEX_STR 1
#define WC_TYPE_UNSIGNED_BIN 2
#if defined(WOLFSSL_QNX_CAAM) || defined(WOLFSSL_IMXRT1170_CAAM)
#define WC_TYPE_BLACK_KEY 3
#endif
#if defined(HAVE_ECC) || defined(WOLFSSL_EXPORT_INT)
WOLFSSL_API int wc_export_int(mp_int* mp, byte* buf, word32* len,
word32 keySz, int encType);
#endif
#ifdef HAVE_WOLF_BIGINT
#if !defined(WOLF_BIGINT_DEFINED)
/* raw big integer */
typedef struct WC_BIGINT {
byte* buf;
word32 len;
void* heap;
} WC_BIGINT;
#define WOLF_BIGINT_DEFINED
#endif
WOLFSSL_LOCAL void wc_bigint_init(WC_BIGINT* a);
WOLFSSL_LOCAL int wc_bigint_alloc(WC_BIGINT* a, word32 sz);
WOLFSSL_LOCAL int wc_bigint_from_unsigned_bin(WC_BIGINT* a, const byte* in, word32 inlen);
WOLFSSL_LOCAL int wc_bigint_to_unsigned_bin(WC_BIGINT* a, byte* out, word32* outlen);
WOLFSSL_LOCAL void wc_bigint_zero(WC_BIGINT* a);
WOLFSSL_LOCAL void wc_bigint_free(WC_BIGINT* a);
WOLFSSL_LOCAL int wc_mp_to_bigint(mp_int* src, WC_BIGINT* dst);
WOLFSSL_LOCAL int wc_mp_to_bigint_sz(mp_int* src, WC_BIGINT* dst, word32 sz);
WOLFSSL_LOCAL int wc_bigint_to_mp(WC_BIGINT* src, mp_int* dst);
#endif /* HAVE_WOLF_BIGINT */
#ifdef HAVE_WC_INTROSPECTION
WOLFSSL_API const char *wc_GetMathInfo(void);
#endif
/* Support for generic Hardware based Math Functions */
#ifdef WOLFSSL_USE_HW_MP
WOLFSSL_LOCAL int hw_mod(mp_int* multiplier, mp_int* mod, mp_int* result);
WOLFSSL_LOCAL int hw_mulmod(mp_int* multiplier, mp_int* multiplicand,
mp_int* mod, mp_int* result);
WOLFSSL_LOCAL int hw_addmod(mp_int* a, mp_int* b, mp_int* mod, mp_int* result);
WOLFSSL_LOCAL int hw_submod(mp_int* a, mp_int* b, mp_int* mod, mp_int* result);
WOLFSSL_LOCAL int hw_exptmod(mp_int* base, mp_int* exp, mp_int* mod,
mp_int* result);
WOLFSSL_LOCAL int hw_sqrmod(mp_int* base, mp_int* mod, mp_int* result);
/* One to one mappings */
#define mp_mod hw_mod
#define mp_addmod hw_addmod
#define mp_submod hw_submod
#define mp_mulmod hw_mulmod
#define mp_exptmod hw_exptmod
#define mp_sqrmod hw_sqrmod
#endif
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* __WOLFMATH_H__ */
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