Mercurial > dropbear

annotate src/headers/tommath_superclass.h @ 199:8be64e2c86f4 libtomcrypt

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* SMALL_CODE is now LTC_SMALL_CODE
author Matt Johnston <matt@ucc.asn.au>
date Tue, 10 May 2005 17:02:59 +0000
parents 1c15b283127b
children 39d5d58461d6
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1 /* super class file for PK algos */
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2
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3 /* default ... include all MPI */
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4 #define LTM_ALL
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5
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6 /* RSA only (does not support DH/DSA/ECC) */
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7 // #define SC_RSA_1
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8
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9 /* For reference.... On an Athlon64 optimizing for speed...
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10
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11 LTM's mpi.o with all functions [striped] is 142KiB in size.
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12
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13 */
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14
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15 /* Works for RSA only, mpi.o is 68KiB */
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16 #ifdef SC_RSA_1
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17 #define BN_MP_SHRINK_C
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18 #define BN_MP_LCM_C
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19 #define BN_MP_PRIME_RANDOM_EX_C
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20 #define BN_MP_INVMOD_C
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21 #define BN_MP_GCD_C
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22 #define BN_MP_MOD_C
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23 #define BN_MP_MULMOD_C
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24 #define BN_MP_ADDMOD_C
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25 #define BN_MP_EXPTMOD_C
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26 #define BN_MP_SET_INT_C
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27 #define BN_MP_INIT_MULTI_C
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28 #define BN_MP_CLEAR_MULTI_C
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29 #define BN_MP_UNSIGNED_BIN_SIZE_C
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30 #define BN_MP_TO_UNSIGNED_BIN_C
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31 #define BN_MP_MOD_D_C
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32 #define BN_MP_PRIME_RABIN_MILLER_TRIALS_C
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33 #define BN_REVERSE_C
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34 #define BN_PRIME_TAB_C
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35
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36 /* other modifiers */
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37 #define BN_MP_DIV_SMALL /* Slower division, not critical */
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38
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39 /* here we are on the last pass so we turn things off. The functions classes are still there
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40 * but we remove them specifically from the build. This also invokes tweaks in functions
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41 * like removing support for even moduli, etc...
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42 */
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43 #ifdef LTM_LAST
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44 #undef BN_MP_TOOM_MUL_C
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45 #undef BN_MP_TOOM_SQR_C
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46 #undef BN_MP_KARATSUBA_MUL_C
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47 #undef BN_MP_KARATSUBA_SQR_C
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48 #undef BN_MP_REDUCE_C
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49 #undef BN_MP_REDUCE_SETUP_C
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50 #undef BN_MP_DR_IS_MODULUS_C
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51 #undef BN_MP_DR_SETUP_C
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52 #undef BN_MP_DR_REDUCE_C
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53 #undef BN_MP_REDUCE_IS_2K_C
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54 #undef BN_MP_REDUCE_2K_SETUP_C
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55 #undef BN_MP_REDUCE_2K_C
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56 #undef BN_S_MP_EXPTMOD_C
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57 #undef BN_MP_DIV_3_C
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58 #undef BN_S_MP_MUL_HIGH_DIGS_C
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59 #undef BN_FAST_S_MP_MUL_HIGH_DIGS_C
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60 #undef BN_FAST_MP_INVMOD_C
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61
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62 /* To safely undefine these you have to make sure your RSA key won't exceed the Comba threshold
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63 * which is roughly 255 digits [7140 bits for 32-bit machines, 15300 bits for 64-bit machines]
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64 * which means roughly speaking you can handle upto 2536-bit RSA keys with these defined without
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65 * trouble.
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66 */
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67 #undef BN_S_MP_MUL_DIGS_C
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68 #undef BN_S_MP_SQR_C
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69 #undef BN_MP_MONTGOMERY_REDUCE_C
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70 #endif
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71
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72 #endif