Mercurial > dropbear

annotate libtommath/etc/2kprime.c @ 644:ff5cc422ba40 dropbear-tfm tomsfastmath

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Somehow Makefile.in went missing
author Matt Johnston <matt@ucc.asn.au>
date Wed, 23 Nov 2011 18:11:51 +0700
parents 5ff8218bcee9
children 60fc6476e044
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
284
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1 /* Makes safe primes of a 2k nature */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
2 #include <tommath.h>
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parents:
diff changeset
3 #include <time.h>
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4
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
5 int sizes[] = {256, 512, 768, 1024, 1536, 2048, 3072, 4096};
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Matt Johnston <matt@ucc.asn.au>
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6
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diff changeset
7 int main(void)
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
8 {
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
9 char buf[2000];
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
10 int x, y;
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Matt Johnston <matt@ucc.asn.au>
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diff changeset
11 mp_int q, p;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
12 FILE *out;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
13 clock_t t1;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
14 mp_digit z;
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
Matt Johnston <matt@ucc.asn.au>
parents:
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15
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
16 mp_init_multi(&q, &p, NULL);
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Matt Johnston <matt@ucc.asn.au>
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17
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
18 out = fopen("2kprime.1", "w");
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
19 for (x = 0; x < (int)(sizeof(sizes) / sizeof(sizes[0])); x++) {
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
20 top:
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
21 mp_2expt(&q, sizes[x]);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
22 mp_add_d(&q, 3, &q);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
23 z = -3;
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24
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
25 t1 = clock();
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Matt Johnston <matt@ucc.asn.au>
parents:
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26 for(;;) {
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Matt Johnston <matt@ucc.asn.au>
parents:
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27 mp_sub_d(&q, 4, &q);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
28 z += 4;
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Matt Johnston <matt@ucc.asn.au>
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29
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
30 if (z > MP_MASK) {
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Matt Johnston <matt@ucc.asn.au>
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diff changeset
31 printf("No primes of size %d found\n", sizes[x]);
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32 break;
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Matt Johnston <matt@ucc.asn.au>
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33 }
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34
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Matt Johnston <matt@ucc.asn.au>
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35 if (clock() - t1 > CLOCKS_PER_SEC) {
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Matt Johnston <matt@ucc.asn.au>
parents:
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36 printf("."); fflush(stdout);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
37 // sleep((clock() - t1 + CLOCKS_PER_SEC/2)/CLOCKS_PER_SEC);
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38 t1 = clock();
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Matt Johnston <matt@ucc.asn.au>
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39 }
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
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40
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
41 /* quick test on q */
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Matt Johnston <matt@ucc.asn.au>
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diff changeset
42 mp_prime_is_prime(&q, 1, &y);
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Matt Johnston <matt@ucc.asn.au>
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43 if (y == 0) {
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44 continue;
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45 }
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46
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
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47 /* find (q-1)/2 */
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Matt Johnston <matt@ucc.asn.au>
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48 mp_sub_d(&q, 1, &p);
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Matt Johnston <matt@ucc.asn.au>
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diff changeset
49 mp_div_2(&p, &p);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
50 mp_prime_is_prime(&p, 3, &y);
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Matt Johnston <matt@ucc.asn.au>
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51 if (y == 0) {
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
52 continue;
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53 }
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54
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
Matt Johnston <matt@ucc.asn.au>
parents:
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55 /* test on q */
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Matt Johnston <matt@ucc.asn.au>
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56 mp_prime_is_prime(&q, 3, &y);
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Matt Johnston <matt@ucc.asn.au>
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57 if (y == 0) {
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
58 continue;
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Matt Johnston <matt@ucc.asn.au>
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59 }
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60
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
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61 break;
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62 }
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63
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
64 if (y == 0) {
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
65 ++sizes[x];
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Matt Johnston <matt@ucc.asn.au>
parents:
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66 goto top;
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
67 }
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
68
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
69 mp_toradix(&q, buf, 10);
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
70 printf("\n\n%d-bits (k = %lu) = %s\n", sizes[x], z, buf);
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
71 fprintf(out, "%d-bits (k = %lu) = %s\n", sizes[x], z, buf); fflush(out);
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
72 }
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
73
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
74 return 0;
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
75 }
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
Matt Johnston <matt@ucc.asn.au>
parents:
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76
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
Matt Johnston <matt@ucc.asn.au>
parents:
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77
eed26cff980b propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583)
Matt Johnston <matt@ucc.asn.au>
parents:
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78
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Matt Johnston <matt@ucc.asn.au>
parents:
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79
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Matt Johnston <matt@ucc.asn.au>
parents:
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80
389
5ff8218bcee9 propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 2af95f00ebd5bb7a28b3817db1218442c935388e)
Matt Johnston <matt@ucc.asn.au>
parents: 284
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81
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Matt Johnston <matt@ucc.asn.au>
parents: 284
diff changeset
82 /* $Source: /cvs/libtom/libtommath/etc/2kprime.c,v $ */
5ff8218bcee9 propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 2af95f00ebd5bb7a28b3817db1218442c935388e)
Matt Johnston <matt@ucc.asn.au>
parents: 284
diff changeset
83 /* $Revision: 1.2 $ */
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Matt Johnston <matt@ucc.asn.au>
parents: 284
diff changeset
84 /* $Date: 2005/05/05 14:38:47 $ */