3 * Reading Diffie-Hellman parameters
5 * (c) 2004 Straylight/Edgeware
8 /*----- Licensing notice --------------------------------------------------*
10 * This file is part of Catacomb.
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.
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.
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,
28 /*----- Header files ------------------------------------------------------*/
34 /*----- Main code ---------------------------------------------------------*/
36 /* ---- @dh_infofromdata@ --- *
38 * Arguments: @dh_param *dp@ = parameters to fill in
39 * @pdata *pd@ = packed data structure
43 * Use: Fills in a parameters structure from a packed data block.
46 void dh_infofromdata(dh_param
*dp
, pdata
*pd
)
47 { dp
->p
= &pd
->p
; dp
->q
= &pd
->q
; dp
->g
= &pd
->g
; }
49 /* --- @dh_parse@, @dhbin_parse@ --- *
51 * Arguments: @qd_parse *qd@ = parser context
52 * @dh_param *dp@ = parameters to fill in
54 * Returns: Zero if OK, nonzero on error.
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.
61 static int parse(qd_parse
*qd
, gprime_param
*dp
)
63 mp
*p
= MP_NEW
, *q
= MP_NEW
, *g
= MP_NEW
;
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
;
71 mp_drop(p
); mp_drop(q
); mp_drop(g
);
75 int dh_parse(qd_parse
*qd
, dh_param
*dp
)
79 for (pe
= ptab
; pe
->name
; pe
++) {
80 if (qd_enum(qd
, pe
->name
) >= 0) {
81 dh_infofromdata(dp
, pe
->data
);
91 int dhbin_parse(qd_parse
*qd
, gbin_param
*gb
)
95 for (be
= bintab
; be
->name
; be
++) {
96 if (qd_enum(qd
, be
->name
) >= 0) {
97 dh_infofromdata(gb
, be
->data
);
107 /*----- Test rig ----------------------------------------------------------*/
113 int main(int argc
, char *argv
[])
121 gr
= fibrand_create(0);
122 fputs("checking standard prime groups:", stdout
);
124 for (pe
= ptab
; pe
->name
; pe
++) {
127 dh_infofromdata(&dp
, pe
->data
);
128 g
= group_prime(&dp
);
129 if (mp_bits(dp
.p
) > 3072 &&
130 (!argv
[1] || strcmp(argv
[1], "keen") != 0)) {
131 printf(" [%s skipped]", pe
->name
);
139 printf(" [%s failed: %s]", pe
->name
, e
);
142 printf(" %s", pe
->name
);
145 fputs(ok ?
" ok\n" : " failed\n", stdout
);
147 fputs("checking standard binary groups:", stdout
);
148 for (be
= bintab
; be
->name
; be
++) {
151 dh_infofromdata(&gb
, be
->data
);
152 g
= group_binary(&gb
);
157 printf(" [%s failed: %s]", be
->name
, e
);
160 printf(" %s", be
->name
);
163 fputs(ok ?
" ok\n" : " failed\n", stdout
);
164 gr
->ops
->destroy(gr
);
170 /*----- That's all, folks -------------------------------------------------*/