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annotate libtommath/tommath_superclass.h @ 1684:d5d25ce2a2ed

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cast to fix warning
author Matt Johnston <matt@ucc.asn.au>
date Tue, 26 May 2020 19:57:28 +0800
parents f52919ffd3b1
children 1051e4eea25a
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1 /* LibTomMath, multiple-precision integer library -- Tom St Denis
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2 *
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3 * LibTomMath is a library that provides multiple-precision
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4 * integer arithmetic as well as number theoretic functionality.
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5 *
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6 * The library was designed directly after the MPI library by
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7 * Michael Fromberger but has been written from scratch with
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8 * additional optimizations in place.
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9 *
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10 * SPDX-License-Identifier: Unlicense
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11 */
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13 /* super class file for PK algos */
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14
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15 /* default ... include all MPI */
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16 #define LTM_ALL
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18 /* RSA only (does not support DH/DSA/ECC) */
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19 /* #define SC_RSA_1 */
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21 /* For reference.... On an Athlon64 optimizing for speed...
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23 LTM's mpi.o with all functions [striped] is 142KiB in size.
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25 */
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27 /* Works for RSA only, mpi.o is 68KiB */
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28 #ifdef SC_RSA_1
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29 # define BN_MP_SHRINK_C
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30 # define BN_MP_LCM_C
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31 # define BN_MP_PRIME_RANDOM_EX_C
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32 # define BN_MP_INVMOD_C
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33 # define BN_MP_GCD_C
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34 # define BN_MP_MOD_C
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35 # define BN_MP_MULMOD_C
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36 # define BN_MP_ADDMOD_C
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37 # define BN_MP_EXPTMOD_C
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38 # define BN_MP_SET_INT_C
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39 # define BN_MP_INIT_MULTI_C
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40 # define BN_MP_CLEAR_MULTI_C
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41 # define BN_MP_UNSIGNED_BIN_SIZE_C
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42 # define BN_MP_TO_UNSIGNED_BIN_C
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43 # define BN_MP_MOD_D_C
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44 # define BN_MP_PRIME_RABIN_MILLER_TRIALS_C
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45 # define BN_REVERSE_C
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46 # define BN_PRIME_TAB_C
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47
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48 /* other modifiers */
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49 # define BN_MP_DIV_SMALL /* Slower division, not critical */
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51 /* here we are on the last pass so we turn things off. The functions classes are still there
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52 * but we remove them specifically from the build. This also invokes tweaks in functions
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53 * like removing support for even moduli, etc...
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54 */
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55 # ifdef LTM_LAST
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56 # undef BN_MP_TOOM_MUL_C
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57 # undef BN_MP_TOOM_SQR_C
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58 # undef BN_MP_KARATSUBA_MUL_C
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59 # undef BN_MP_KARATSUBA_SQR_C
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60 # undef BN_MP_REDUCE_C
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61 # undef BN_MP_REDUCE_SETUP_C
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62 # undef BN_MP_DR_IS_MODULUS_C
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63 # undef BN_MP_DR_SETUP_C
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64 # undef BN_MP_DR_REDUCE_C
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65 # undef BN_MP_REDUCE_IS_2K_C
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66 # undef BN_MP_REDUCE_2K_SETUP_C
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67 # undef BN_MP_REDUCE_2K_C
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68 # undef BN_S_MP_EXPTMOD_C
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69 # undef BN_MP_DIV_3_C
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70 # undef BN_S_MP_MUL_HIGH_DIGS_C
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71 # undef BN_FAST_S_MP_MUL_HIGH_DIGS_C
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72 # undef BN_FAST_MP_INVMOD_C
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73
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74 /* To safely undefine these you have to make sure your RSA key won't exceed the Comba threshold
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75 * which is roughly 255 digits [7140 bits for 32-bit machines, 15300 bits for 64-bit machines]
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76 * which means roughly speaking you can handle upto 2536-bit RSA keys with these defined without
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77 * trouble.
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78 */
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79 # undef BN_S_MP_MUL_DIGS_C
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80 # undef BN_S_MP_SQR_C
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81 # undef BN_MP_MONTGOMERY_REDUCE_C
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82 # endif
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84 #endif
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86 /* ref: HEAD -> master, tag: v1.1.0 */
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87 /* git commit: 08549ad6bc8b0cede0b357a9c341c5c6473a9c55 */
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88 /* commit time: 2019-01-28 20:32:32 +0100 */