Varun Bahl / CyaSSL-Encryp

cya_u

Fork of CyaSSL-forEncrypt by Mobius IoT

integer.h@2:d0516dc143b1, 2017-05-10 (annotated)

Committer:
vbahl2
Date:
Wed May 10 18:20:47 2017 +0000
Revision:
2:d0516dc143b1
Parent:
0:5045d2638c29 
updated

Who changed what in which revision?

UserRevisionLine numberNew contents of line
toddouska 0:5045d2638c29 1 /* integer.h
toddouska 0:5045d2638c29 2 *
toddouska 0:5045d2638c29 3 * Copyright (C) 2006-2009 Sawtooth Consulting Ltd.
toddouska 0:5045d2638c29 4 *
toddouska 0:5045d2638c29 5 * This file is part of CyaSSL.
toddouska 0:5045d2638c29 6 *
toddouska 0:5045d2638c29 7 * CyaSSL is free software; you can redistribute it and/or modify
toddouska 0:5045d2638c29 8 * it under the terms of the GNU General Public License as published by
toddouska 0:5045d2638c29 9 * the Free Software Foundation; either version 2 of the License, or
toddouska 0:5045d2638c29 10 * (at your option) any later version.
toddouska 0:5045d2638c29 11 *
toddouska 0:5045d2638c29 12 * CyaSSL is distributed in the hope that it will be useful,
toddouska 0:5045d2638c29 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
toddouska 0:5045d2638c29 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
toddouska 0:5045d2638c29 15 * GNU General Public License for more details.
toddouska 0:5045d2638c29 16 *
toddouska 0:5045d2638c29 17 * You should have received a copy of the GNU General Public License
toddouska 0:5045d2638c29 18 * along with this program; if not, write to the Free Software
toddouska 0:5045d2638c29 19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
toddouska 0:5045d2638c29 20 */
toddouska 0:5045d2638c29 21
toddouska 0:5045d2638c29 22
toddouska 0:5045d2638c29 23
toddouska 0:5045d2638c29 24 /*
toddouska 0:5045d2638c29 25 * Based on public domain LibTomMath 0.38 by Tom St Denis, tomstdenis@iahu.ca,
toddouska 0:5045d2638c29 26 * http://math.libtomcrypt.com
toddouska 0:5045d2638c29 27 */
toddouska 0:5045d2638c29 28
toddouska 0:5045d2638c29 29
toddouska 0:5045d2638c29 30 #ifndef CTAO_CRYPT_INTEGER_H
toddouska 0:5045d2638c29 31 #define CTAO_CRYPT_INTEGER_H
toddouska 0:5045d2638c29 32
toddouska 0:5045d2638c29 33 /* may optionally use fast math instead, not yet supported on all platforms and
toddouska 0:5045d2638c29 34 may not be faster on all
toddouska 0:5045d2638c29 35 */
toddouska 0:5045d2638c29 36 #include "types.h"
toddouska 0:5045d2638c29 37 #ifdef USE_FAST_MATH
toddouska 0:5045d2638c29 38 #include "tfm.h"
toddouska 0:5045d2638c29 39 #else
toddouska 0:5045d2638c29 40
toddouska 0:5045d2638c29 41 #ifndef CHAR_BIT
toddouska 0:5045d2638c29 42 #include <limits.h>
toddouska 0:5045d2638c29 43 #endif
toddouska 0:5045d2638c29 44
toddouska 0:5045d2638c29 45 #include "types.h" /* will set MP_xxBIT if not default */
toddouska 0:5045d2638c29 46 #include "mpi_class.h"
toddouska 0:5045d2638c29 47
toddouska 0:5045d2638c29 48 #ifndef MIN
toddouska 0:5045d2638c29 49 #define MIN(x,y) ((x)<(y)?(x):(y))
toddouska 0:5045d2638c29 50 #endif
toddouska 0:5045d2638c29 51
toddouska 0:5045d2638c29 52 #ifndef MAX
toddouska 0:5045d2638c29 53 #define MAX(x,y) ((x)>(y)?(x):(y))
toddouska 0:5045d2638c29 54 #endif
toddouska 0:5045d2638c29 55
toddouska 0:5045d2638c29 56 #ifdef __cplusplus
toddouska 0:5045d2638c29 57 extern "C" {
toddouska 0:5045d2638c29 58
toddouska 0:5045d2638c29 59 /* C++ compilers don't like assigning void * to mp_digit * */
toddouska 0:5045d2638c29 60 #define OPT_CAST(x) (x *)
toddouska 0:5045d2638c29 61
toddouska 0:5045d2638c29 62 #else
toddouska 0:5045d2638c29 63
toddouska 0:5045d2638c29 64 /* C on the other hand doesn't care */
toddouska 0:5045d2638c29 65 #define OPT_CAST(x)
toddouska 0:5045d2638c29 66
toddouska 0:5045d2638c29 67 #endif
toddouska 0:5045d2638c29 68
toddouska 0:5045d2638c29 69
toddouska 0:5045d2638c29 70 /* detect 64-bit mode if possible */
toddouska 0:5045d2638c29 71 #if defined(__x86_64__)
toddouska 0:5045d2638c29 72 #if !(defined(MP_64BIT) && defined(MP_16BIT) && defined(MP_8BIT))
toddouska 0:5045d2638c29 73 #define MP_64BIT
toddouska 0:5045d2638c29 74 #endif
toddouska 0:5045d2638c29 75 #endif
toddouska 0:5045d2638c29 76
toddouska 0:5045d2638c29 77 /* some default configurations.
toddouska 0:5045d2638c29 78 *
toddouska 0:5045d2638c29 79 * A "mp_digit" must be able to hold DIGIT_BIT + 1 bits
toddouska 0:5045d2638c29 80 * A "mp_word" must be able to hold 2*DIGIT_BIT + 1 bits
toddouska 0:5045d2638c29 81 *
toddouska 0:5045d2638c29 82 * At the very least a mp_digit must be able to hold 7 bits
toddouska 0:5045d2638c29 83 * [any size beyond that is ok provided it doesn't overflow the data type]
toddouska 0:5045d2638c29 84 */
toddouska 0:5045d2638c29 85 #ifdef MP_8BIT
toddouska 0:5045d2638c29 86 typedef unsigned char mp_digit;
toddouska 0:5045d2638c29 87 typedef unsigned short mp_word;
toddouska 0:5045d2638c29 88 #elif defined(MP_16BIT)
toddouska 0:5045d2638c29 89 typedef unsigned short mp_digit;
toddouska 0:5045d2638c29 90 typedef unsigned long mp_word;
toddouska 0:5045d2638c29 91 #elif defined(MP_64BIT)
toddouska 0:5045d2638c29 92 /* for GCC only on supported platforms */
toddouska 0:5045d2638c29 93 #ifndef CRYPT
toddouska 0:5045d2638c29 94 typedef unsigned long long ulong64;
toddouska 0:5045d2638c29 95 typedef signed long long long64;
toddouska 0:5045d2638c29 96 #endif
toddouska 0:5045d2638c29 97
toddouska 0:5045d2638c29 98 typedef unsigned long mp_digit;
toddouska 0:5045d2638c29 99 typedef unsigned long mp_word __attribute__ ((mode(TI)));
toddouska 0:5045d2638c29 100
toddouska 0:5045d2638c29 101 #define DIGIT_BIT 60
toddouska 0:5045d2638c29 102 #else
toddouska 0:5045d2638c29 103 /* this is the default case, 28-bit digits */
toddouska 0:5045d2638c29 104
toddouska 0:5045d2638c29 105 /* this is to make porting into LibTomCrypt easier :-) */
toddouska 0:5045d2638c29 106 #ifndef CRYPT
toddouska 0:5045d2638c29 107 #if defined(_MSC_VER) || defined(__BORLANDC__)
toddouska 0:5045d2638c29 108 typedef unsigned __int64 ulong64;
toddouska 0:5045d2638c29 109 typedef signed __int64 long64;
toddouska 0:5045d2638c29 110 #else
toddouska 0:5045d2638c29 111 typedef unsigned long long ulong64;
toddouska 0:5045d2638c29 112 typedef signed long long long64;
toddouska 0:5045d2638c29 113 #endif
toddouska 0:5045d2638c29 114 #endif
toddouska 0:5045d2638c29 115
toddouska 0:5045d2638c29 116 typedef unsigned long mp_digit;
toddouska 0:5045d2638c29 117 typedef ulong64 mp_word;
toddouska 0:5045d2638c29 118
toddouska 0:5045d2638c29 119 #ifdef MP_31BIT
toddouska 0:5045d2638c29 120 /* this is an extension that uses 31-bit digits */
toddouska 0:5045d2638c29 121 #define DIGIT_BIT 31
toddouska 0:5045d2638c29 122 #else
toddouska 0:5045d2638c29 123 /* default case is 28-bit digits, defines MP_28BIT as a handy test macro */
toddouska 0:5045d2638c29 124 #define DIGIT_BIT 28
toddouska 0:5045d2638c29 125 #define MP_28BIT
toddouska 0:5045d2638c29 126 #endif
toddouska 0:5045d2638c29 127 #endif
toddouska 0:5045d2638c29 128
toddouska 0:5045d2638c29 129
toddouska 0:5045d2638c29 130 /* otherwise the bits per digit is calculated automatically from the size of
toddouska 0:5045d2638c29 131 a mp_digit */
toddouska 0:5045d2638c29 132 #ifndef DIGIT_BIT
toddouska 0:5045d2638c29 133 #define DIGIT_BIT ((int)((CHAR_BIT * sizeof(mp_digit) - 1)))
toddouska 0:5045d2638c29 134 /* bits per digit */
toddouska 0:5045d2638c29 135 #endif
toddouska 0:5045d2638c29 136
toddouska 0:5045d2638c29 137 #define MP_DIGIT_BIT DIGIT_BIT
toddouska 0:5045d2638c29 138 #define MP_MASK ((((mp_digit)1)<<((mp_digit)DIGIT_BIT))-((mp_digit)1))
toddouska 0:5045d2638c29 139 #define MP_DIGIT_MAX MP_MASK
toddouska 0:5045d2638c29 140
toddouska 0:5045d2638c29 141 /* equalities */
toddouska 0:5045d2638c29 142 #define MP_LT -1 /* less than */
toddouska 0:5045d2638c29 143 #define MP_EQ 0 /* equal to */
toddouska 0:5045d2638c29 144 #define MP_GT 1 /* greater than */
toddouska 0:5045d2638c29 145
toddouska 0:5045d2638c29 146 #define MP_ZPOS 0 /* positive integer */
toddouska 0:5045d2638c29 147 #define MP_NEG 1 /* negative */
toddouska 0:5045d2638c29 148
toddouska 0:5045d2638c29 149 #define MP_OKAY 0 /* ok result */
toddouska 0:5045d2638c29 150 #define MP_MEM -2 /* out of mem */
toddouska 0:5045d2638c29 151 #define MP_VAL -3 /* invalid input */
toddouska 0:5045d2638c29 152 #define MP_RANGE MP_VAL
toddouska 0:5045d2638c29 153
toddouska 0:5045d2638c29 154 #define MP_YES 1 /* yes response */
toddouska 0:5045d2638c29 155 #define MP_NO 0 /* no response */
toddouska 0:5045d2638c29 156
toddouska 0:5045d2638c29 157 /* Primality generation flags */
toddouska 0:5045d2638c29 158 #define LTM_PRIME_BBS 0x0001 /* BBS style prime */
toddouska 0:5045d2638c29 159 #define LTM_PRIME_SAFE 0x0002 /* Safe prime (p-1)/2 == prime */
toddouska 0:5045d2638c29 160 #define LTM_PRIME_2MSB_ON 0x0008 /* force 2nd MSB to 1 */
toddouska 0:5045d2638c29 161
toddouska 0:5045d2638c29 162 typedef int mp_err;
toddouska 0:5045d2638c29 163
toddouska 0:5045d2638c29 164 /* define this to use lower memory usage routines (exptmods mostly) */
toddouska 0:5045d2638c29 165 #define MP_LOW_MEM
toddouska 0:5045d2638c29 166
toddouska 0:5045d2638c29 167 /* default precision */
toddouska 0:5045d2638c29 168 #ifndef MP_PREC
toddouska 0:5045d2638c29 169 #ifndef MP_LOW_MEM
toddouska 0:5045d2638c29 170 #define MP_PREC 32 /* default digits of precision */
toddouska 0:5045d2638c29 171 #else
toddouska 0:5045d2638c29 172 #define MP_PREC 1 /* default digits of precision */
toddouska 0:5045d2638c29 173 #endif
toddouska 0:5045d2638c29 174 #endif
toddouska 0:5045d2638c29 175
toddouska 0:5045d2638c29 176 /* size of comba arrays, should be at least 2 * 2**(BITS_PER_WORD -
toddouska 0:5045d2638c29 177 BITS_PER_DIGIT*2) */
toddouska 0:5045d2638c29 178 #define MP_WARRAY (1 << (sizeof(mp_word) * CHAR_BIT - 2 * DIGIT_BIT + 1))
toddouska 0:5045d2638c29 179
toddouska 0:5045d2638c29 180 /* the infamous mp_int structure */
toddouska 0:5045d2638c29 181 typedef struct {
toddouska 0:5045d2638c29 182 int used, alloc, sign;
toddouska 0:5045d2638c29 183 mp_digit *dp;
toddouska 0:5045d2638c29 184 } mp_int;
toddouska 0:5045d2638c29 185
toddouska 0:5045d2638c29 186 /* callback for mp_prime_random, should fill dst with random bytes and return
toddouska 0:5045d2638c29 187 how many read [upto len] */
toddouska 0:5045d2638c29 188 typedef int ltm_prime_callback(unsigned char *dst, int len, void *dat);
toddouska 0:5045d2638c29 189
toddouska 0:5045d2638c29 190
toddouska 0:5045d2638c29 191 #define USED(m) ((m)->used)
toddouska 0:5045d2638c29 192 #define DIGIT(m,k) ((m)->dp[(k)])
toddouska 0:5045d2638c29 193 #define SIGN(m) ((m)->sign)
toddouska 0:5045d2638c29 194
toddouska 0:5045d2638c29 195
toddouska 0:5045d2638c29 196 /* ---> Basic Manipulations <--- */
toddouska 0:5045d2638c29 197 #define mp_iszero(a) (((a)->used == 0) ? MP_YES : MP_NO)
toddouska 0:5045d2638c29 198 #define mp_iseven(a) \
toddouska 0:5045d2638c29 199 (((a)->used > 0 && (((a)->dp[0] & 1) == 0)) ? MP_YES : MP_NO)
toddouska 0:5045d2638c29 200 #define mp_isodd(a) \
toddouska 0:5045d2638c29 201 (((a)->used > 0 && (((a)->dp[0] & 1) == 1)) ? MP_YES : MP_NO)
toddouska 0:5045d2638c29 202
toddouska 0:5045d2638c29 203
toddouska 0:5045d2638c29 204 /* number of primes */
toddouska 0:5045d2638c29 205 #ifdef MP_8BIT
toddouska 0:5045d2638c29 206 #define PRIME_SIZE 31
toddouska 0:5045d2638c29 207 #else
toddouska 0:5045d2638c29 208 #define PRIME_SIZE 256
toddouska 0:5045d2638c29 209 #endif
toddouska 0:5045d2638c29 210
toddouska 0:5045d2638c29 211 #define mp_prime_random(a, t, size, bbs, cb, dat) \
toddouska 0:5045d2638c29 212 mp_prime_random_ex(a, t, ((size) * 8) + 1, (bbs==1)?LTM_PRIME_BBS:0, cb, dat)
toddouska 0:5045d2638c29 213
toddouska 0:5045d2638c29 214 #define mp_read_raw(mp, str, len) mp_read_signed_bin((mp), (str), (len))
toddouska 0:5045d2638c29 215 #define mp_raw_size(mp) mp_signed_bin_size(mp)
toddouska 0:5045d2638c29 216 #define mp_toraw(mp, str) mp_to_signed_bin((mp), (str))
toddouska 0:5045d2638c29 217 #define mp_read_mag(mp, str, len) mp_read_unsigned_bin((mp), (str), (len))
toddouska 0:5045d2638c29 218 #define mp_mag_size(mp) mp_unsigned_bin_size(mp)
toddouska 0:5045d2638c29 219 #define mp_tomag(mp, str) mp_to_unsigned_bin((mp), (str))
toddouska 0:5045d2638c29 220
toddouska 0:5045d2638c29 221 #define mp_tobinary(M, S) mp_toradix((M), (S), 2)
toddouska 0:5045d2638c29 222 #define mp_tooctal(M, S) mp_toradix((M), (S), 8)
toddouska 0:5045d2638c29 223 #define mp_todecimal(M, S) mp_toradix((M), (S), 10)
toddouska 0:5045d2638c29 224 #define mp_tohex(M, S) mp_toradix((M), (S), 16)
toddouska 0:5045d2638c29 225
toddouska 0:5045d2638c29 226 #define s_mp_mul(a, b, c) s_mp_mul_digs(a, b, c, (a)->used + (b)->used + 1)
toddouska 0:5045d2638c29 227
toddouska 0:5045d2638c29 228 extern const char *mp_s_rmap;
toddouska 0:5045d2638c29 229
toddouska 0:5045d2638c29 230 /* 6 functions needed by Rsa */
toddouska 0:5045d2638c29 231 int mp_init (mp_int * a);
toddouska 0:5045d2638c29 232 void mp_clear (mp_int * a);
toddouska 0:5045d2638c29 233 int mp_unsigned_bin_size(mp_int * a);
toddouska 0:5045d2638c29 234 int mp_read_unsigned_bin (mp_int * a, const unsigned char *b, int c);
toddouska 0:5045d2638c29 235 int mp_to_unsigned_bin (mp_int * a, unsigned char *b);
toddouska 0:5045d2638c29 236 int mp_exptmod (mp_int * G, mp_int * X, mp_int * P, mp_int * Y);
toddouska 0:5045d2638c29 237 /* end functions needed by Rsa */
toddouska 0:5045d2638c29 238
toddouska 0:5045d2638c29 239 /* functions added to support above needed, removed TOOM and KARATSUBA */
toddouska 0:5045d2638c29 240 int mp_count_bits (mp_int * a);
toddouska 0:5045d2638c29 241 int mp_init_copy (mp_int * a, mp_int * b);
toddouska 0:5045d2638c29 242 int mp_copy (mp_int * a, mp_int * b);
toddouska 0:5045d2638c29 243 int mp_grow (mp_int * a, int size);
toddouska 0:5045d2638c29 244 void bn_reverse (unsigned char *s, int len);
toddouska 0:5045d2638c29 245 int mp_div_2d (mp_int * a, int b, mp_int * c, mp_int * d);
toddouska 0:5045d2638c29 246 void mp_zero (mp_int * a);
toddouska 0:5045d2638c29 247 void mp_clamp (mp_int * a);
toddouska 0:5045d2638c29 248 void mp_exch (mp_int * a, mp_int * b);
toddouska 0:5045d2638c29 249 void mp_rshd (mp_int * a, int b);
toddouska 0:5045d2638c29 250 int mp_mod_2d (mp_int * a, int b, mp_int * c);
toddouska 0:5045d2638c29 251 int mp_read_unsigned_bin (mp_int * a, const unsigned char *b, int c);
toddouska 0:5045d2638c29 252 int mp_mul_2d (mp_int * a, int b, mp_int * c);
toddouska 0:5045d2638c29 253 int mp_lshd (mp_int * a, int b);
toddouska 0:5045d2638c29 254 int mp_exptmod (mp_int * G, mp_int * X, mp_int * P, mp_int * Y);
toddouska 0:5045d2638c29 255 int mp_abs (mp_int * a, mp_int * b);
toddouska 0:5045d2638c29 256 int mp_invmod (mp_int * a, mp_int * b, mp_int * c);
toddouska 0:5045d2638c29 257 int fast_mp_invmod (mp_int * a, mp_int * b, mp_int * c);
toddouska 0:5045d2638c29 258 int mp_invmod_slow (mp_int * a, mp_int * b, mp_int * c);
toddouska 0:5045d2638c29 259 int mp_cmp_mag (mp_int * a, mp_int * b);
toddouska 0:5045d2638c29 260 int mp_cmp (mp_int * a, mp_int * b);
toddouska 0:5045d2638c29 261 int mp_cmp_d(mp_int * a, mp_digit b);
toddouska 0:5045d2638c29 262 void mp_set (mp_int * a, mp_digit b);
toddouska 0:5045d2638c29 263 int mp_mod (mp_int * a, mp_int * b, mp_int * c);
toddouska 0:5045d2638c29 264 int mp_div(mp_int * a, mp_int * b, mp_int * c, mp_int * d);
toddouska 0:5045d2638c29 265 int mp_div_2(mp_int * a, mp_int * b);
toddouska 0:5045d2638c29 266 int mp_add (mp_int * a, mp_int * b, mp_int * c);
toddouska 0:5045d2638c29 267 int s_mp_add (mp_int * a, mp_int * b, mp_int * c);
toddouska 0:5045d2638c29 268 int s_mp_sub (mp_int * a, mp_int * b, mp_int * c);
toddouska 0:5045d2638c29 269 int mp_sub (mp_int * a, mp_int * b, mp_int * c);
toddouska 0:5045d2638c29 270 int mp_init (mp_int * a);
toddouska 0:5045d2638c29 271 int mp_reduce_is_2k_l(mp_int *a);
toddouska 0:5045d2638c29 272 int mp_reduce_is_2k(mp_int *a);
toddouska 0:5045d2638c29 273 int mp_dr_is_modulus(mp_int *a);
toddouska 0:5045d2638c29 274 int mp_exptmod_fast (mp_int * G, mp_int * X, mp_int * P, mp_int * Y, int);
toddouska 0:5045d2638c29 275 int mp_montgomery_setup (mp_int * n, mp_digit * rho);
toddouska 0:5045d2638c29 276 int fast_mp_montgomery_reduce (mp_int * x, mp_int * n, mp_digit rho);
toddouska 0:5045d2638c29 277 int mp_montgomery_reduce (mp_int * x, mp_int * n, mp_digit rho);
toddouska 0:5045d2638c29 278 void mp_dr_setup(mp_int *a, mp_digit *d);
toddouska 0:5045d2638c29 279 int mp_dr_reduce (mp_int * x, mp_int * n, mp_digit k);
toddouska 0:5045d2638c29 280 int mp_reduce_2k(mp_int *a, mp_int *n, mp_digit d);
toddouska 0:5045d2638c29 281 int fast_s_mp_mul_high_digs (mp_int * a, mp_int * b, mp_int * c, int digs);
toddouska 0:5045d2638c29 282 int s_mp_mul_high_digs (mp_int * a, mp_int * b, mp_int * c, int digs);
toddouska 0:5045d2638c29 283 int mp_reduce_2k_setup_l(mp_int *a, mp_int *d);
toddouska 0:5045d2638c29 284 int mp_reduce_2k_l(mp_int *a, mp_int *n, mp_int *d);
toddouska 0:5045d2638c29 285 int mp_reduce (mp_int * x, mp_int * m, mp_int * mu);
toddouska 0:5045d2638c29 286 int mp_reduce_setup (mp_int * a, mp_int * b);
toddouska 0:5045d2638c29 287 int s_mp_exptmod (mp_int * G, mp_int * X, mp_int * P, mp_int * Y, int redmode);
toddouska 0:5045d2638c29 288 int mp_montgomery_calc_normalization (mp_int * a, mp_int * b);
toddouska 0:5045d2638c29 289 int s_mp_mul_digs (mp_int * a, mp_int * b, mp_int * c, int digs);
toddouska 0:5045d2638c29 290 int s_mp_sqr (mp_int * a, mp_int * b);
toddouska 0:5045d2638c29 291 int fast_s_mp_mul_digs (mp_int * a, mp_int * b, mp_int * c, int digs);
toddouska 0:5045d2638c29 292 int fast_s_mp_sqr (mp_int * a, mp_int * b);
toddouska 0:5045d2638c29 293 int mp_init_size (mp_int * a, int size);
toddouska 0:5045d2638c29 294 int mp_div_3 (mp_int * a, mp_int *c, mp_digit * d);
toddouska 0:5045d2638c29 295 int mp_mul_2(mp_int * a, mp_int * b);
toddouska 0:5045d2638c29 296 int mp_mul (mp_int * a, mp_int * b, mp_int * c);
toddouska 0:5045d2638c29 297 int mp_sqr (mp_int * a, mp_int * b);
toddouska 0:5045d2638c29 298 int mp_mulmod (mp_int * a, mp_int * b, mp_int * c, mp_int * d);
toddouska 0:5045d2638c29 299 int mp_mul_d (mp_int * a, mp_digit b, mp_int * c);
toddouska 0:5045d2638c29 300 int mp_2expt (mp_int * a, int b);
toddouska 0:5045d2638c29 301 int mp_reduce_2k_setup(mp_int *a, mp_digit *d);
toddouska 0:5045d2638c29 302 /* end support added functions */
toddouska 0:5045d2638c29 303
toddouska 0:5045d2638c29 304 /* added */
toddouska 0:5045d2638c29 305 int mp_init_multi(mp_int* a, mp_int* b, mp_int* c, mp_int* d, mp_int* e,
toddouska 0:5045d2638c29 306 mp_int* f);
toddouska 0:5045d2638c29 307
toddouska 0:5045d2638c29 308 #ifdef CYASSL_KEY_GEN
toddouska 0:5045d2638c29 309 int mp_prime_is_prime (mp_int * a, int t, int *result);
toddouska 0:5045d2638c29 310 int mp_set_int (mp_int * a, unsigned long b);
toddouska 0:5045d2638c29 311 int mp_gcd (mp_int * a, mp_int * b, mp_int * c);
toddouska 0:5045d2638c29 312 int mp_lcm (mp_int * a, mp_int * b, mp_int * c);
toddouska 0:5045d2638c29 313 int mp_sub_d (mp_int * a, mp_digit b, mp_int * c);
toddouska 0:5045d2638c29 314 #endif
toddouska 0:5045d2638c29 315
toddouska 0:5045d2638c29 316
toddouska 0:5045d2638c29 317 #ifdef __cplusplus
toddouska 0:5045d2638c29 318 }
toddouska 0:5045d2638c29 319 #endif
toddouska 0:5045d2638c29 320
toddouska 0:5045d2638c29 321
toddouska 0:5045d2638c29 322 #endif /* USE_FAST_MATH */
toddouska 0:5045d2638c29 323
toddouska 0:5045d2638c29 324 #endif /* CTAO_CRYPT_INTEGER_H */
toddouska 0:5045d2638c29 325