basic imath test
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@20420 ec53bebd-3082-4978-b11e-865c3cabbd6b
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								lib/des/test_imath.c
									
									
									
									
									
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								lib/des/test_imath.c
									
									
									
									
									
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/*
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 * Copyright (c) 2007 Kungliga Tekniska H<>gskolan
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 * (Royal Institute of Technology, Stockholm, Sweden). 
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 * All rights reserved. 
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 *
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 * Redistribution and use in source and binary forms, with or without 
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 * modification, are permitted provided that the following conditions 
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 * are met: 
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 *
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 * 1. Redistributions of source code must retain the above copyright 
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 *    notice, this list of conditions and the following disclaimer. 
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 *
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 * 2. Redistributions in binary form must reproduce the above copyright 
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 *    notice, this list of conditions and the following disclaimer in the 
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 *    documentation and/or other materials provided with the distribution. 
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 *
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 * 3. Neither the name of the Institute nor the names of its contributors 
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 *    may be used to endorse or promote products derived from this software 
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 *    without specific prior written permission. 
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
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 * SUCH DAMAGE. 
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 */
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#include <config.h>
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RCSID("$Id$");
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <err.h>
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#include "imath/imath.h"
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static const int s_ptab[] = {
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    3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43,
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    47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101,
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    103, 107, 109, 113, 127, 131, 137, 139, 149, 151,
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    157, 163, 167, 173, 179, 181, 191, 193, 197, 199,
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    211, 223, 227, 229, 233, 239, 241, 251, 257, 263,
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    269, 271, 277, 281, 283, 293, 307, 311, 313, 317,
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    331, 337, 347, 349, 353, 359, 367, 373, 379, 383,
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    389, 397, 401, 409, 419, 421, 431, 433, 439, 443,
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    449, 457, 461, 463, 467, 479, 487, 491, 499, 503,
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    509, 521, 523, 541, 547, 557, 563, 569, 571, 577,
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    587, 593, 599, 601, 607, 613, 617, 619, 631, 641,
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    643, 647, 653, 659, 661, 673, 677, 683, 691, 701,
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    709, 719, 727, 733, 739, 743, 751, 757, 761, 769,
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    773, 787, 797, 809, 811, 821, 823, 827, 829, 839,
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    853, 857, 859, 863, 877, 881, 883, 887, 907, 911,
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    919, 929, 937, 941, 947, 953, 967, 971, 977, 983,
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    991, 997, 1009, 1013, 1019, 1021, 1031, 1033,
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    1039, 1049, 1051, 1061, 1063, 1069, 1087, 1091,
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    1093, 1097, 1103, 1109, 1117, 1123, 1129, 1151,
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    1153, 1163, 1171, 1181, 1187, 1193, 1201, 1213,
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    1217, 1223, 1229, 1231, 1237, 1249, 1259, 1277,
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    1279, 1283, 1289, 1291, 1297, 1301, 1303, 1307,
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    1319, 1321, 1327, 1361, 1367, 1373, 1381, 1399,
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    1409, 1423, 1427, 1429, 1433, 1439, 1447, 1451,
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    1453, 1459, 1471, 1481, 1483, 1487, 1489, 1493,
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    1499, 1511, 1523, 1531, 1543, 1549, 1553, 1559,
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    1567, 1571, 1579, 1583, 1597, 1601, 1607, 1609,
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    1613, 1619, 1621, 1627, 1637, 1657, 1663, 1667,
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    1669, 1693, 1697, 1699, 1709, 1721, 1723, 1733,
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    1741, 1747, 1753, 1759, 1777, 1783, 1787, 1789,
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    1801, 1811, 1823, 1831, 1847, 1861, 1867, 1871,
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    1873, 1877, 1879, 1889, 1901, 1907, 1913, 1931,
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    1933, 1949, 1951, 1973, 1979, 1987, 1993, 1997,
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    1999, 2003, 2011, 2017, 2027, 2029, 2039, 2053,
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    2063, 2069, 2081, 2083, 2087, 2089, 2099, 2111,
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    2113, 2129, 2131, 2137, 2141, 2143, 2153, 2161,
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    2179, 2203, 2207, 2213, 2221, 2237, 2239, 2243,
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    2251, 2267, 2269, 2273, 2281, 2287, 2293, 2297,
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    2309, 2311, 2333, 2339, 2341, 2347, 2351, 2357,
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    2371, 2377, 2381, 2383, 2389, 2393, 2399, 2411,
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    2417, 2423, 2437, 2441, 2447, 2459, 2467, 2473,
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    2477, 2503, 2521, 2531, 2539, 2543, 2549, 2551,
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    2557, 2579, 2591, 2593, 2609, 2617, 2621, 2633,
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    2647, 2657, 2659, 2663, 2671, 2677, 2683, 2687,
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    2689, 2693, 2699, 2707, 2711, 2713, 2719, 2729,
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    2731, 2741, 2749, 2753, 2767, 2777, 2789, 2791,
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    2797, 2801, 2803, 2819, 2833, 2837, 2843, 2851,
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    2857, 2861, 2879, 2887, 2897, 2903, 2909, 2917,
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    2927, 2939, 2953, 2957, 2963, 2969, 2971, 2999,
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    3001, 3011, 3019, 3023, 3037, 3041, 3049, 3061,
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    3067, 3079, 3083, 3089, 3109, 3119, 3121, 3137,
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    3163, 3167, 3169, 3181, 3187, 3191, 3203, 3209,
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    3217, 3221, 3229, 3251, 3253, 3257, 3259, 3271,
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    3299, 3301, 3307, 3313, 3319, 3323, 3329, 3331,
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    3343, 3347, 3359, 3361, 3371, 3373, 3389, 3391,
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    3407, 3413, 3433, 3449, 3457, 3461, 3463, 3467,
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    3469, 3491, 3499, 3511, 3517, 3527, 3529, 3533,
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    3539, 3541, 3547, 3557, 3559, 3571, 3581, 3583,
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    3593, 3607, 3613, 3617, 3623, 3631, 3637, 3643,
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    3659, 3671, 3673, 3677, 3691, 3697, 3701, 3709,
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    3719, 3727, 3733, 3739, 3761, 3767, 3769, 3779,
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    3793, 3797, 3803, 3821, 3823, 3833, 3847, 3851,
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    3853, 3863, 3877, 3881, 3889, 3907, 3911, 3917,
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    3919, 3923, 3929, 3931, 3943, 3947, 3967, 3989,
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    4001, 4003, 4007, 4013, 4019, 4021, 4027, 4049,
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    4051, 4057, 4073, 4079, 4091, 4093, 4099, 4111,
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    4127, 4129, 4133, 4139, 4153, 4157, 4159, 4177,
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    4201, 4211, 4217, 4219, 4229, 4231, 4241, 4243,
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    4253, 4259, 4261, 4271, 4273, 4283, 4289, 4297,
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    4327, 4337, 4339, 4349, 4357, 4363, 4373, 4391,
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    4397, 4409, 4421, 4423, 4441, 4447, 4451, 4457,
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    4463, 4481, 4483, 4493, 4507, 4513, 4517, 4519,
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    4523, 4547, 4549, 4561, 4567, 4583, 4591, 4597,
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    4603, 4621, 4637, 4639, 4643, 4649, 4651, 4657,
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    4663, 4673, 4679, 4691, 4703, 4721, 4723, 4729,
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    4733, 4751, 4759, 4783, 4787, 4789, 4793, 4799,
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    4801, 4813, 4817, 4831, 4861, 4871, 4877, 4889,
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    4903, 4909, 4919, 4931, 4933, 4937, 4943, 4951,
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    4957, 4967, 4969, 4973, 4987, 4993, 4999
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};
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static const int s_ptab_size = sizeof(s_ptab)/sizeof(s_ptab[0]);
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static int
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random_num(mp_int num, size_t len)
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{
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    unsigned char *p;
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    mp_result res;
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    size_t i;
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    p = malloc(len);
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    if (p == NULL)
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	return 1;
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    for (i = 0; i < len; i++)
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	p[i] = random();
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    res = mp_int_read_unsigned(num, p, len);
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    free(p);
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    if (res != MP_OK)
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	return 1;
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    return 0;
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}
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int
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main(int argc, char **argv)
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{
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    int i;
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    mp_result res;
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    mpz_t tmp, z;
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    srandom(time(NULL));
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    res = mp_int_init(&tmp);
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    if (res != MP_OK)
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	errx(1, "ini_init");
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    res = mp_int_init(&z);
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    if (res != MP_OK)
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	errx(1, "ini_init");
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    random_num(&z, 128);
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    if(mp_int_is_even(&z))
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	mp_int_add_value(&z, 1, &z);
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    for(i = 0; i < 10 && i < s_ptab_size; ++i) {
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	res = mp_int_exptmod_bvalue(s_ptab[i], &z, &z, &tmp);
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	if (res != MP_OK)
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	    return res;
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	if(mp_int_compare_value(&tmp, s_ptab[i]) != 0) {
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	    printf("primeless\n");
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	    break;
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	}
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    }
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    mp_int_clear(&tmp);
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    mp_int_clear(&z);
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    return 0;
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}
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