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tommath_superclass.h
/* LibTomMath, multiple-precision integer library -- Tom St Denis */ /* SPDX-License-Identifier: Unlicense */ /* super class file for PK algos */ /* default ... include all MPI */ #ifndef LTM_NOTHING #define LTM_ALL #endif /* RSA only (does not support DH/DSA/ECC) */ /* #define SC_RSA_1 */ /* #define SC_RSA_1_WITH_TESTS */ /* For reference.... On an Athlon64 optimizing for speed... LTM's mpi.o with all functions [striped] is 142KiB in size. */ #ifdef SC_RSA_1_WITH_TESTS # define BN_MP_ERROR_TO_STRING_C # define BN_MP_FREAD_C # define BN_MP_FWRITE_C # define BN_MP_INCR_C # define BN_MP_ISEVEN_C # define BN_MP_ISODD_C # define BN_MP_NEG_C # define BN_MP_PRIME_FROBENIUS_UNDERWOOD_C # define BN_MP_RADIX_SIZE_C # define BN_MP_RAND_C # define BN_MP_REDUCE_C # define BN_MP_REDUCE_2K_L_C # define BN_MP_FROM_SBIN_C # define BN_MP_ROOT_U32_C # define BN_MP_SET_L_C # define BN_MP_SET_UL_C # define BN_MP_SBIN_SIZE_C # define BN_MP_TO_RADIX_C # define BN_MP_TO_SBIN_C # define BN_S_MP_RAND_JENKINS_C # define BN_S_MP_RAND_PLATFORM_C #endif /* Works for RSA only, mpi.o is 68KiB */ #if defined(SC_RSA_1) || defined (SC_RSA_1_WITH_TESTS) # define BN_CUTOFFS_C # define BN_MP_ADDMOD_C # define BN_MP_CLEAR_MULTI_C # define BN_MP_EXPTMOD_C # define BN_MP_GCD_C # define BN_MP_INIT_MULTI_C # define BN_MP_INVMOD_C # define BN_MP_LCM_C # define BN_MP_MOD_C # define BN_MP_MOD_D_C # define BN_MP_MULMOD_C # define BN_MP_PRIME_IS_PRIME_C # define BN_MP_PRIME_RABIN_MILLER_TRIALS_C # define BN_MP_PRIME_RAND_C # define BN_MP_RADIX_SMAP_C # define BN_MP_SET_INT_C # define BN_MP_SHRINK_C # define BN_MP_TO_UNSIGNED_BIN_C # define BN_MP_UNSIGNED_BIN_SIZE_C # define BN_PRIME_TAB_C # define BN_S_MP_REVERSE_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_DR_IS_MODULUS_C # undef BN_MP_DR_SETUP_C # undef BN_MP_DR_REDUCE_C # undef BN_MP_DIV_3_C # undef BN_MP_REDUCE_2K_SETUP_C # undef BN_MP_REDUCE_2K_C # undef BN_MP_REDUCE_IS_2K_C # undef BN_MP_REDUCE_SETUP_C # undef BN_S_MP_BALANCE_MUL_C # undef BN_S_MP_EXPTMOD_C # undef BN_S_MP_INVMOD_FAST_C # undef BN_S_MP_KARATSUBA_MUL_C # undef BN_S_MP_KARATSUBA_SQR_C # undef BN_S_MP_MUL_HIGH_DIGS_C # undef BN_S_MP_MUL_HIGH_DIGS_FAST_C # undef BN_S_MP_TOOM_MUL_C # undef BN_S_MP_TOOM_SQR_C # ifndef SC_RSA_1_WITH_TESTS # undef BN_MP_REDUCE_C # endif /* 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 upto 2536-bit RSA keys with these defined without * trouble. */ # undef BN_MP_MONTGOMERY_REDUCE_C # undef BN_S_MP_MUL_DIGS_C # undef BN_S_MP_SQR_C # endif #endif