3 * @version 33ef80f (HEAD, tag: MATRIXSSL-3-7-2-OPEN, tag: MATRIXSSL-3-7-2-COMM, origin/master, origin/HEAD, master)
5 * multiple-precision integer library.
8 * Copyright (c) 2013-2015 INSIDE Secure Corporation
9 * Copyright (c) PeerSec Networks, 2002-2011
12 * The latest version of this code is available at http://www.matrixssl.org
14 * This software is open source; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
19 * This General Public License does NOT permit incorporating this software
20 * into proprietary programs. If you are unable to comply with the GPL, a
21 * commercial license for this software may be purchased from INSIDE at
22 * http://www.insidesecure.com/eng/Company/Locations
24 * This program is distributed in WITHOUT ANY WARRANTY; without even the
25 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
26 * See the GNU General Public License for more details.
28 * You should have received a copy of the GNU General Public License
29 * along with this program; if not, write to the Free Software
30 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
31 * http://www.gnu.org/copyleft/gpl.html
33 /******************************************************************************/
39 /* Define this here to avoid including circular limits.h on some platforms */
44 /******************************************************************************/
46 If native 64 bit integers are not supported, we do not support 32x32->64
47 in hardware, so we must set the 16 bit flag to produce 16x16->32 products.
49 #ifndef HAVE_NATIVE_INT64
51 #endif /* ! HAVE_NATIVE_INT64 */
53 /******************************************************************************/
55 Some default configurations.
57 pstm_word should be the largest value the processor can hold as the product
58 of a multiplication. Most platforms support a 32x32->64 MAC instruction,
59 so 64bits is the default pstm_word size.
60 pstm_digit should be half the size of pstm_word
63 /* 8-bit digits, 16-bit word products */
64 typedef unsigned char pstm_digit;
65 typedef unsigned short pstm_word;
68 #elif defined(PSTM_16BIT)
69 /* 16-bit digits, 32-bit word products */
70 typedef unsigned short pstm_digit;
71 typedef unsigned long pstm_word;
74 #elif defined(PSTM_64BIT)
75 /* 64-bit digits, 128-bit word products */
77 #error "64bit digits requires GCC"
79 typedef unsigned long pstm_digit;
80 typedef unsigned long pstm_word __attribute__ ((mode(TI)));
84 /* This is the default case, 32-bit digits, 64-bit word products */
85 typedef uint32 pstm_digit;
86 typedef uint64 pstm_word;
89 #endif /* digit and word size */
91 #define PSTM_MASK (pstm_digit)(-1)
92 #define PSTM_DIGIT_MAX PSTM_MASK
94 /******************************************************************************/
98 #define PSTM_LT -1 /* less than */
99 #define PSTM_EQ 0 /* equal to */
100 #define PSTM_GT 1 /* greater than */
102 #define PSTM_ZPOS 0 /* positive integer */
103 #define PSTM_NEG 1 /* negative */
105 #define PSTM_OKAY PS_SUCCESS
106 #define PSTM_MEM PS_MEM_FAIL
108 /******************************************************************************/
110 Various build options
112 #define PSTM_DEFAULT_INIT 64 /* default (64) digits of allocation */
113 #define PSTM_MAX_SIZE 4096
116 int16 used, alloc, sign;
121 /******************************************************************************/
123 Operations on large integers
125 #define pstm_iszero(a) (((a)->used == 0) ? PS_TRUE : PS_FALSE)
126 #define pstm_iseven(a) (((a)->used > 0 && (((a)->dp[0] & 1) == 0)) ? PS_TRUE : PS_FALSE)
127 #define pstm_isodd(a) (((a)->used > 0 && (((a)->dp[0] & 1) == 1)) ? PS_TRUE : PS_FALSE)
128 #define pstm_abs(a, b) { pstm_copy(a, b); (b)->sign = 0; }
130 extern void pstm_set(pstm_int *a, pstm_digit b);
132 extern void pstm_zero(pstm_int * a);
134 extern int32 pstm_init(psPool_t *pool, pstm_int * a);
136 extern int32 pstm_init_size(psPool_t *pool, pstm_int * a, uint32 size);
138 extern int32 pstm_init_copy(psPool_t *pool, pstm_int * a, pstm_int * b,
141 extern int16 pstm_count_bits (pstm_int * a);
143 extern int32 pstm_init_for_read_unsigned_bin(psPool_t *pool, pstm_int *a,
146 extern int32 pstm_read_unsigned_bin(pstm_int *a, unsigned char *b, int32 c);
148 extern int32 pstm_unsigned_bin_size(pstm_int *a);
150 extern int32 pstm_copy(pstm_int * a, pstm_int * b);
152 extern void pstm_exch(pstm_int * a, pstm_int * b);
154 extern void pstm_clear(pstm_int * a);
156 extern void pstm_clear_multi(pstm_int *mp0, pstm_int *mp1, pstm_int *mp2,
157 pstm_int *mp3, pstm_int *mp4, pstm_int *mp5, pstm_int *mp6,
160 extern int32 pstm_grow(pstm_int * a, int16 size);
162 extern void pstm_clamp(pstm_int * a);
164 extern int32 pstm_cmp(pstm_int * a, pstm_int * b);
166 extern int32 pstm_cmp_mag(pstm_int * a, pstm_int * b);
168 extern void pstm_rshd(pstm_int *a, int16 x);
170 extern int32 pstm_lshd(pstm_int * a, int16 b);
172 extern int32 pstm_div(psPool_t *pool, pstm_int *a, pstm_int *b, pstm_int *c,
175 extern int32 pstm_div_2d(psPool_t *pool, pstm_int *a, int16 b, pstm_int *c,
178 extern int32 pstm_div_2(pstm_int * a, pstm_int * b);
180 extern int32 s_pstm_sub(pstm_int *a, pstm_int *b, pstm_int *c);
182 extern int32 pstm_sub(pstm_int *a, pstm_int *b, pstm_int *c);
184 extern int32 pstm_sub_d(psPool_t *pool, pstm_int *a, pstm_digit b, pstm_int *c);
186 extern int32 pstm_mul_2(pstm_int * a, pstm_int * b);
188 extern int32 pstm_mod(psPool_t *pool, pstm_int *a, pstm_int *b, pstm_int *c);
190 extern int32 pstm_mulmod(psPool_t *pool, pstm_int *a, pstm_int *b, pstm_int *c,
193 extern int32 pstm_exptmod(psPool_t *pool, pstm_int *G, pstm_int *X, pstm_int *P,
196 extern int32 pstm_2expt(pstm_int *a, int16 b);
198 extern int32 pstm_add(pstm_int *a, pstm_int *b, pstm_int *c);
200 extern int32 pstm_to_unsigned_bin(psPool_t *pool, pstm_int *a,
203 extern int32 pstm_to_unsigned_bin_nr(psPool_t *pool, pstm_int *a,
206 extern int32 pstm_montgomery_setup(pstm_int *a, pstm_digit *rho);
209 #define pstm_montgomery_reduce(pool, a, m, mp, paD, paDlen) \
210 pstm_montgomery_reduce( a, m, mp, paD, paDlen)
211 extern int32 pstm_montgomery_reduce(psPool_t *pool, pstm_int *a, pstm_int *m,
212 pstm_digit mp, pstm_digit *paD, uint32 paDlen);
214 #define pstm_mul_comba(pool, A, B, C, paD, paDlen) \
215 pstm_mul_comba( A, B, C, paD, paDlen)
216 extern int32 pstm_mul_comba(psPool_t *pool, pstm_int *A, pstm_int *B,
217 pstm_int *C, pstm_digit *paD, uint32 paDlen);
220 #define pstm_sqr_comba(pool, A, B, paD, paDlen) \
221 pstm_sqr_comba( A, B, paD, paDlen)
222 extern int32 pstm_sqr_comba(psPool_t *pool, pstm_int *A, pstm_int *B,
223 pstm_digit *paD, uint32 paDlen);
225 extern int32 pstm_cmp_d(pstm_int *a, pstm_digit b);
227 extern int32 pstm_montgomery_calc_normalization(pstm_int *a, pstm_int *b);
229 extern int32 pstm_mul_d(pstm_int *a, pstm_digit b, pstm_int *c);
231 extern int32 pstm_invmod(psPool_t *pool, pstm_int * a, pstm_int * b,
234 #else /* DISABLE_PSTM */
235 typedef int32 pstm_int;
236 #endif /* !DISABLE_PSTM */
237 #endif /* _h_PSTMATH */