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- /* mpi_superclass.h
- *
- * Copyright (C) 2006-2022 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
- */
- /* super class file for PK algos */
- /* default ... include all MPI */
- #define LTM_ALL
- /* RSA only (does not support DH/DSA/ECC) */
- /* #define SC_RSA_1 */
- /* For reference.... On an Athlon64 optimizing for speed...
- LTM's mpi.o with all functions [striped] is 142KiB in size.
- */
- /* Works for RSA only, mpi.o is 68KiB */
- #ifdef SC_RSA_1
- #define BN_MP_SHRINK_C
- #define BN_MP_LCM_C
- #define BN_MP_PRIME_RANDOM_EX_C
- #define BN_MP_INVMOD_C
- #define BN_MP_GCD_C
- #define BN_MP_MOD_C
- #define BN_MP_MULMOD_C
- #define BN_MP_ADDMOD_C
- #define BN_MP_EXPTMOD_C
- #define BN_MP_SET_INT_C
- #define BN_MP_INIT_MULTI_C
- #define BN_MP_CLEAR_MULTI_C
- #define BN_MP_UNSIGNED_BIN_SIZE_C
- #define BN_MP_TO_UNSIGNED_BIN_C
- #define BN_MP_MOD_D_C
- #define BN_MP_PRIME_RABIN_MILLER_TRIALS_C
- #define BN_REVERSE_C
- #define BN_PRIME_TAB_C
- /* other modifiers */
- #define BN_MP_DIV_SMALL /* Slower division, not critical */
- /* here we are on the last pass so we turn things off. The functions classes are still there
- * but we remove them specifically from the build. This also invokes tweaks in functions
- * like removing support for even moduli, etc...
- */
- #ifdef LTM_LAST
- #undef BN_MP_TOOM_MUL_C
- #undef BN_MP_TOOM_SQR_C
- #undef BN_MP_KARATSUBA_MUL_C
- #undef BN_MP_KARATSUBA_SQR_C
- #undef BN_MP_REDUCE_C
- #undef BN_MP_REDUCE_SETUP_C
- #undef BN_MP_DR_IS_MODULUS_C
- #undef BN_MP_DR_SETUP_C
- #undef BN_MP_DR_REDUCE_C
- #undef BN_MP_REDUCE_IS_2K_C
- #undef BN_MP_REDUCE_2K_SETUP_C
- #undef BN_MP_REDUCE_2K_C
- #undef BN_S_MP_EXPTMOD_C
- #undef BN_MP_DIV_3_C
- #undef BN_S_MP_MUL_HIGH_DIGS_C
- #undef BN_FAST_S_MP_MUL_HIGH_DIGS_C
- #undef BN_FAST_MP_INVMOD_C
- /* To safely undefine these you have to make sure your RSA key won't exceed the Comba threshold
- * which is roughly 255 digits [7140 bits for 32-bit machines, 15300 bits for 64-bit machines]
- * which means roughly speaking you can handle up to 2536-bit RSA keys with these defined without
- * trouble.
- */
- #undef BN_S_MP_MUL_DIGS_C
- #undef BN_S_MP_SQR_C
- #undef BN_MP_MONTGOMERY_REDUCE_C
- #endif
- #endif
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