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34e4f738 | 1 | /* -*-c-*- |
2 | * | |
34e4f738 | 3 | * Reading Diffie-Hellman parameters |
4 | * | |
5 | * (c) 2004 Straylight/Edgeware | |
6 | */ | |
7 | ||
45c0fd36 | 8 | /*----- Licensing notice --------------------------------------------------* |
34e4f738 | 9 | * |
10 | * This file is part of Catacomb. | |
11 | * | |
12 | * Catacomb is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU Library General Public License as | |
14 | * published by the Free Software Foundation; either version 2 of the | |
15 | * License, or (at your option) any later version. | |
45c0fd36 | 16 | * |
34e4f738 | 17 | * Catacomb is distributed in the hope that it will be useful, |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU Library General Public License for more details. | |
45c0fd36 | 21 | * |
34e4f738 | 22 | * You should have received a copy of the GNU Library General Public |
23 | * License along with Catacomb; if not, write to the Free | |
24 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
25 | * MA 02111-1307, USA. | |
26 | */ | |
27 | ||
34e4f738 | 28 | /*----- Header files ------------------------------------------------------*/ |
29 | ||
30 | #include "dh.h" | |
31 | #include "ptab.h" | |
3688eb75 | 32 | #include "bintab.h" |
34e4f738 | 33 | |
34 | /*----- Main code ---------------------------------------------------------*/ | |
35 | ||
7b6d64f1 | 36 | /* ---- @dh_infofromdata@ --- * |
37 | * | |
38 | * Arguments: @dh_param *dp@ = parameters to fill in | |
39 | * @pdata *pd@ = packed data structure | |
40 | * | |
41 | * Returns: --- | |
42 | * | |
43 | * Use: Fills in a parameters structure from a packed data block. | |
44 | */ | |
45 | ||
46 | void dh_infofromdata(dh_param *dp, pdata *pd) | |
47 | { dp->p = &pd->p; dp->q = &pd->q; dp->g = &pd->g; } | |
48 | ||
3688eb75 | 49 | /* --- @dh_parse@, @dhbin_parse@ --- * |
34e4f738 | 50 | * |
51 | * Arguments: @qd_parse *qd@ = parser context | |
52 | * @dh_param *dp@ = parameters to fill in | |
53 | * | |
54 | * Returns: Zero if OK, nonzero on error. | |
55 | * | |
56 | * Use: Parses a prime group string. This is either one of the | |
57 | * standard group strings, or a %$p$%, %$q$%, %$g$% triple | |
58 | * separated by commas. | |
59 | */ | |
60 | ||
3688eb75 | 61 | static int parse(qd_parse *qd, gprime_param *dp) |
34e4f738 | 62 | { |
63 | mp *p = MP_NEW, *q = MP_NEW, *g = MP_NEW; | |
3688eb75 | 64 | |
65 | if ((p = qd_getmp(qd)) == 0) goto fail; | |
66 | qd_delim(qd, ','); if ((q = qd_getmp(qd)) == 0) goto fail; | |
67 | qd_delim(qd, ','); if ((g = qd_getmp(qd)) == 0) goto fail; | |
68 | dp->p = p; dp->q = q; dp->g = g; | |
69 | return (0); | |
70 | fail: | |
71 | mp_drop(p); mp_drop(q); mp_drop(g); | |
72 | return (-1); | |
73 | } | |
74 | ||
75 | int dh_parse(qd_parse *qd, dh_param *dp) | |
76 | { | |
34e4f738 | 77 | const pentry *pe; |
78 | ||
79 | for (pe = ptab; pe->name; pe++) { | |
80 | if (qd_enum(qd, pe->name) >= 0) { | |
7b6d64f1 | 81 | dh_infofromdata(dp, pe->data); |
34e4f738 | 82 | goto found; |
83 | } | |
84 | } | |
3688eb75 | 85 | if (parse(qd, dp)) |
86 | return (-1); | |
34e4f738 | 87 | found: |
88 | return (0); | |
3688eb75 | 89 | } |
34e4f738 | 90 | |
3688eb75 | 91 | int dhbin_parse(qd_parse *qd, gbin_param *gb) |
92 | { | |
93 | const binentry *be; | |
94 | ||
95 | for (be = bintab; be->name; be++) { | |
96 | if (qd_enum(qd, be->name) >= 0) { | |
7b6d64f1 | 97 | dh_infofromdata(gb, be->data); |
3688eb75 | 98 | goto found; |
99 | } | |
100 | } | |
101 | if (parse(qd, gb)) | |
102 | return (-1); | |
103 | found: | |
104 | return (0); | |
34e4f738 | 105 | } |
106 | ||
107 | /*----- Test rig ----------------------------------------------------------*/ | |
108 | ||
109 | #ifdef TEST_RIG | |
110 | ||
141c1284 MW |
111 | #include <mLib/macros.h> |
112 | ||
34e4f738 | 113 | #include "fibrand.h" |
114 | ||
f94b972d | 115 | int main(int argc, char *argv[]) |
34e4f738 | 116 | { |
117 | const pentry *pe; | |
3688eb75 | 118 | const binentry *be; |
34e4f738 | 119 | const char *e; |
7b6d64f1 | 120 | int ok = 1, aok = 1; |
34e4f738 | 121 | grand *gr; |
122 | ||
123 | gr = fibrand_create(0); | |
7b6d64f1 | 124 | fputs("checking standard prime groups:", stdout); |
125 | fflush(stdout); | |
34e4f738 | 126 | for (pe = ptab; pe->name; pe++) { |
127 | dh_param dp; | |
128 | group *g; | |
7b6d64f1 | 129 | dh_infofromdata(&dp, pe->data); |
34e4f738 | 130 | g = group_prime(&dp); |
6001a9ff | 131 | if (mp_bits(dp.p) > 3072 && |
141c1284 | 132 | (!argv[1] || STRCMP(argv[1], !=, "keen"))) { |
7b6d64f1 | 133 | printf(" [%s skipped]", pe->name); |
134 | fflush(stdout); | |
f94b972d | 135 | continue; |
136 | } | |
34e4f738 | 137 | e = G_CHECK(g, gr); |
138 | G_DESTROYGROUP(g); | |
139 | dh_paramfree(&dp); | |
140 | if (e) { | |
7b6d64f1 | 141 | printf(" [%s failed: %s]", pe->name, e); |
142 | ok = aok = 0; | |
f94b972d | 143 | } else |
7b6d64f1 | 144 | printf(" %s", pe->name); |
145 | fflush(stdout); | |
34e4f738 | 146 | } |
7b6d64f1 | 147 | fputs(ok ? " ok\n" : " failed\n", stdout); |
148 | ok = 1; | |
149 | fputs("checking standard binary groups:", stdout); | |
3688eb75 | 150 | for (be = bintab; be->name; be++) { |
151 | gbin_param gb; | |
152 | group *g; | |
7b6d64f1 | 153 | dh_infofromdata(&gb, be->data); |
3688eb75 | 154 | g = group_binary(&gb); |
3688eb75 | 155 | e = G_CHECK(g, gr); |
156 | G_DESTROYGROUP(g); | |
157 | dh_paramfree(&gb); | |
158 | if (e) { | |
7b6d64f1 | 159 | printf(" [%s failed: %s]", be->name, e); |
160 | ok = aok = 0; | |
3688eb75 | 161 | } else |
7b6d64f1 | 162 | printf(" %s", be->name); |
163 | fflush(stdout); | |
3688eb75 | 164 | } |
7b6d64f1 | 165 | fputs(ok ? " ok\n" : " failed\n", stdout); |
34e4f738 | 166 | gr->ops->destroy(gr); |
7b6d64f1 | 167 | return (!aok); |
34e4f738 | 168 | } |
169 | ||
170 | #endif | |
171 | ||
172 | /*----- That's all, folks -------------------------------------------------*/ |