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comparison libtomcrypt/src/headers/tommath_superclass.h @ 285:1b9e69c058d2

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propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3) to branch 'au.asn.ucc.matt.dropbear' (head fdf4a7a3b97ae5046139915de7e40399cceb2c01)
author Matt Johnston <matt@ucc.asn.au>
date Wed, 08 Mar 2006 13:23:58 +0000
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281:997e6f7dc01e 285:1b9e69c058d2
1 /* super class file for PK algos */
2
3 /* default ... include all MPI */
4 #ifndef SC_RSA_1
5
6 #define LTM_ALL
7
8 #endif
9
10 /* RSA only (does not support DH/DSA/ECC) */
11 /* #define SC_RSA_1 */
12
13 /* For reference.... On an Athlon64 optimizing for speed...
14
15 LTM's mpi.o with all functions [striped] is 142KiB in size.
16
17 */
18
19 /* Works for RSA only, mpi.o is 68KiB */
20 #ifdef SC_RSA_1
21 #define BN_MP_SHRINK_C
22 #define BN_MP_LCM_C
23 #define BN_MP_PRIME_RANDOM_EX_C
24 #define BN_MP_INVMOD_C
25 #define BN_MP_GCD_C
26 #define BN_MP_MOD_C
27 #define BN_MP_MULMOD_C
28 #define BN_MP_ADDMOD_C
29 #define BN_MP_EXPTMOD_C
30 #define BN_MP_SET_INT_C
31 #define BN_MP_INIT_MULTI_C
32 #define BN_MP_CLEAR_MULTI_C
33 #define BN_MP_UNSIGNED_BIN_SIZE_C
34 #define BN_MP_TO_UNSIGNED_BIN_C
35 #define BN_MP_MOD_D_C
36 #define BN_MP_PRIME_RABIN_MILLER_TRIALS_C
37 #define BN_REVERSE_C
38 #define BN_PRIME_TAB_C
39
40 /* other modifiers */
41 #define BN_MP_DIV_SMALL /* Slower division, not critical */
42
43 /* here we are on the last pass so we turn things off. The functions classes are still there
44 * but we remove them specifically from the build. This also invokes tweaks in functions
45 * like removing support for even moduli, etc...
46 */
47 #ifdef LTM_LAST
48 #undef BN_MP_TOOM_MUL_C
49 #undef BN_MP_TOOM_SQR_C
50 #undef BN_MP_KARATSUBA_MUL_C
51 #undef BN_MP_KARATSUBA_SQR_C
52 #undef BN_MP_REDUCE_C
53 #undef BN_MP_REDUCE_SETUP_C
54 #undef BN_MP_DR_IS_MODULUS_C
55 #undef BN_MP_DR_SETUP_C
56 #undef BN_MP_DR_REDUCE_C
57 #undef BN_MP_REDUCE_IS_2K_C
58 #undef BN_MP_REDUCE_2K_SETUP_C
59 #undef BN_MP_REDUCE_2K_C
60 #undef BN_S_MP_EXPTMOD_C
61 #undef BN_MP_DIV_3_C
62 #undef BN_S_MP_MUL_HIGH_DIGS_C
63 #undef BN_FAST_S_MP_MUL_HIGH_DIGS_C
64 #undef BN_FAST_MP_INVMOD_C
65
66 /* To safely undefine these you have to make sure your RSA key won't exceed the Comba threshold
67 * which is roughly 255 digits [7140 bits for 32-bit machines, 15300 bits for 64-bit machines]
68 * which means roughly speaking you can handle upto 2536-bit RSA keys with these defined without
69 * trouble.
70 */
71 #undef BN_S_MP_MUL_DIGS_C
72 #undef BN_S_MP_SQR_C
73 #undef BN_MP_MONTGOMERY_REDUCE_C
74 #endif
75
76 #endif
77
78 /* $Source: /cvs/libtom/libtomcrypt/src/headers/tommath_superclass.h,v $ */
79 /* $Revision: 1.4 $ */
80 /* $Date: 2005/05/14 13:27:20 $ */