Mercurial > dropbear

annotate libtomcrypt/src/headers/tommath_superclass.h @ 289:497fddd4a94e

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code was untested and wrong.
author Matt Johnston <matt@ucc.asn.au>
date Wed, 08 Mar 2006 15:46:24 +0000
parents 1b9e69c058d2
children
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1 /* super class file for PK algos */
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3 /* default ... include all MPI */
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4 #ifndef SC_RSA_1
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5
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6 #define LTM_ALL
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7
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8 #endif
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9
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10 /* RSA only (does not support DH/DSA/ECC) */
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11 /* #define SC_RSA_1 */
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12
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13 /* For reference.... On an Athlon64 optimizing for speed...
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14
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15 LTM's mpi.o with all functions [striped] is 142KiB in size.
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17 */
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18
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19 /* Works for RSA only, mpi.o is 68KiB */
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20 #ifdef SC_RSA_1
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21 #define BN_MP_SHRINK_C
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22 #define BN_MP_LCM_C
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23 #define BN_MP_PRIME_RANDOM_EX_C
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24 #define BN_MP_INVMOD_C
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25 #define BN_MP_GCD_C
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26 #define BN_MP_MOD_C
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27 #define BN_MP_MULMOD_C
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28 #define BN_MP_ADDMOD_C
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29 #define BN_MP_EXPTMOD_C
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30 #define BN_MP_SET_INT_C
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31 #define BN_MP_INIT_MULTI_C
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32 #define BN_MP_CLEAR_MULTI_C
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33 #define BN_MP_UNSIGNED_BIN_SIZE_C
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34 #define BN_MP_TO_UNSIGNED_BIN_C
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35 #define BN_MP_MOD_D_C
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36 #define BN_MP_PRIME_RABIN_MILLER_TRIALS_C
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37 #define BN_REVERSE_C
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38 #define BN_PRIME_TAB_C
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39
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40 /* other modifiers */
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41 #define BN_MP_DIV_SMALL /* Slower division, not critical */
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42
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43 /* here we are on the last pass so we turn things off. The functions classes are still there
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44 * but we remove them specifically from the build. This also invokes tweaks in functions
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45 * like removing support for even moduli, etc...
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46 */
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47 #ifdef LTM_LAST
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48 #undef BN_MP_TOOM_MUL_C
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49 #undef BN_MP_TOOM_SQR_C
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50 #undef BN_MP_KARATSUBA_MUL_C
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51 #undef BN_MP_KARATSUBA_SQR_C
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52 #undef BN_MP_REDUCE_C
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53 #undef BN_MP_REDUCE_SETUP_C
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54 #undef BN_MP_DR_IS_MODULUS_C
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55 #undef BN_MP_DR_SETUP_C
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56 #undef BN_MP_DR_REDUCE_C
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57 #undef BN_MP_REDUCE_IS_2K_C
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58 #undef BN_MP_REDUCE_2K_SETUP_C
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59 #undef BN_MP_REDUCE_2K_C
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60 #undef BN_S_MP_EXPTMOD_C
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61 #undef BN_MP_DIV_3_C
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62 #undef BN_S_MP_MUL_HIGH_DIGS_C
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63 #undef BN_FAST_S_MP_MUL_HIGH_DIGS_C
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64 #undef BN_FAST_MP_INVMOD_C
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65
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66 /* To safely undefine these you have to make sure your RSA key won't exceed the Comba threshold
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67 * which is roughly 255 digits [7140 bits for 32-bit machines, 15300 bits for 64-bit machines]
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68 * which means roughly speaking you can handle upto 2536-bit RSA keys with these defined without
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69 * trouble.
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70 */
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71 #undef BN_S_MP_MUL_DIGS_C
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72 #undef BN_S_MP_SQR_C
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73 #undef BN_MP_MONTGOMERY_REDUCE_C
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74 #endif
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75
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76 #endif
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77
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78 /* $Source: /cvs/libtom/libtomcrypt/src/headers/tommath_superclass.h,v $ */
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79 /* $Revision: 1.4 $ */
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80 /* $Date: 2005/05/14 13:27:20 $ */