d03ab969 |
1 | /* -*-c-*- |
2 | * |
1ba83484 |
3 | * $Id: keyutil.c,v 1.17 2004/03/28 01:58:47 mdw Exp $ |
d03ab969 |
4 | * |
5 | * Simple key manager program |
6 | * |
252c122d |
7 | * (c) 1999 Straylight/Edgeware |
d03ab969 |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of Catacomb. |
13 | * |
14 | * Catacomb is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU Library General Public License as |
16 | * published by the Free Software Foundation; either version 2 of the |
17 | * License, or (at your option) any later version. |
18 | * |
19 | * Catacomb is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | * GNU Library General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU Library General Public |
25 | * License along with Catacomb; if not, write to the Free |
26 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
27 | * MA 02111-1307, USA. |
28 | */ |
29 | |
30 | /*----- Revision history --------------------------------------------------* |
31 | * |
32 | * $Log: keyutil.c,v $ |
1ba83484 |
33 | * Revision 1.17 2004/03/28 01:58:47 mdw |
34 | * Generate, store and retreive elliptic curve keys. |
35 | * |
1e7fadef |
36 | * Revision 1.16 2003/10/15 09:31:45 mdw |
37 | * Fix help message. |
38 | * |
72f13799 |
39 | * Revision 1.15 2003/05/15 23:23:24 mdw |
40 | * Fix behaviour with bogus trailing attributes. |
41 | * |
99dde2f4 |
42 | * Revision 1.14 2001/02/23 09:03:27 mdw |
43 | * Simplify usage message by removing nonexistant options. |
44 | * |
ce70ec47 |
45 | * Revision 1.13 2001/02/21 20:04:27 mdw |
46 | * Provide help on individual commands (some need it desparately). Allow |
47 | * atomic retagging of keys. |
48 | * |
f4f8e305 |
49 | * Revision 1.12 2001/02/03 11:58:22 mdw |
50 | * Store the correct seed information and count for DSA keys now that it's |
51 | * available. |
52 | * |
16efd15b |
53 | * Revision 1.11 2000/12/06 20:33:27 mdw |
54 | * Make flags be macros rather than enumerations, to ensure that they're |
55 | * unsigned. |
56 | * |
4b536f42 |
57 | * Revision 1.10 2000/10/08 12:02:21 mdw |
58 | * Use @MP_EQ@ instead of @MP_CMP@. |
59 | * |
dce3fb0d |
60 | * Revision 1.9 2000/08/15 21:40:49 mdw |
61 | * Minor formatting change in listing attributes. |
62 | * |
40d5a112 |
63 | * Revision 1.8 2000/07/29 09:59:13 mdw |
64 | * Support Lim-Lee primes in Diffie-Hellman parameter generation. |
65 | * |
ab0ca95f |
66 | * Revision 1.7 2000/07/01 11:18:51 mdw |
67 | * Use new interfaces for key manipulation. |
68 | * |
9219a5d6 |
69 | * Revision 1.6 2000/06/17 11:28:22 mdw |
70 | * Use secure memory interface from MP library. `rand_getgood' is |
71 | * deprecated. |
72 | * |
052b36d0 |
73 | * Revision 1.5 2000/02/12 18:21:03 mdw |
74 | * Overhaul of key management (again). |
75 | * |
252c122d |
76 | * Revision 1.4 1999/12/22 15:48:10 mdw |
77 | * Track new key-management changes. Support new key generation |
78 | * algorithms. |
79 | * |
ce1f2631 |
80 | * Revision 1.3 1999/11/02 15:23:24 mdw |
81 | * Fix newlines in keyring list. |
82 | * |
cc321283 |
83 | * Revision 1.2 1999/10/15 21:05:28 mdw |
84 | * In `key list', show timezone for local times, and support `-u' option |
85 | * for UTC output. |
86 | * |
d03ab969 |
87 | * Revision 1.1 1999/09/03 08:41:12 mdw |
88 | * Initial import. |
89 | * |
90 | */ |
91 | |
92 | /*----- Header files ------------------------------------------------------*/ |
93 | |
94 | #include "config.h" |
95 | |
96 | #include <errno.h> |
97 | #include <stdio.h> |
98 | #include <stdlib.h> |
99 | #include <string.h> |
100 | #include <time.h> |
101 | |
252c122d |
102 | #include <mLib/base64.h> |
d03ab969 |
103 | #include <mLib/mdwopt.h> |
104 | #include <mLib/quis.h> |
105 | #include <mLib/report.h> |
106 | #include <mLib/sub.h> |
107 | |
108 | #include <noise.h> |
109 | #include <rand.h> |
110 | |
252c122d |
111 | #include "bbs.h" |
052b36d0 |
112 | #include "dh.h" |
252c122d |
113 | #include "dsa.h" |
1ba83484 |
114 | #include "ec.h" |
115 | #include "ec-keys.h" |
116 | #include "ectab.h" |
252c122d |
117 | #include "fibrand.h" |
d03ab969 |
118 | #include "getdate.h" |
119 | #include "key.h" |
252c122d |
120 | #include "mp.h" |
121 | #include "mpmont.h" |
122 | #include "mprand.h" |
123 | #include "mptext.h" |
124 | #include "pgen.h" |
125 | #include "rsa.h" |
d03ab969 |
126 | |
127 | /*----- Handy global state ------------------------------------------------*/ |
128 | |
129 | static const char *keyfile = "keyring"; |
130 | |
131 | /*----- Useful shared functions -------------------------------------------*/ |
132 | |
133 | /* --- @doopen@ --- * |
134 | * |
135 | * Arguments: @key_file *f@ = pointer to key file block |
136 | * @unsigned how@ = method to open file with |
137 | * |
138 | * Returns: --- |
139 | * |
140 | * Use: Opens a key file and handles errors by panicking |
141 | * appropriately. |
142 | */ |
143 | |
144 | static void doopen(key_file *f, unsigned how) |
145 | { |
252c122d |
146 | if (key_open(f, keyfile, how, key_moan, 0)) |
052b36d0 |
147 | die(1, "couldn't open keyring `%s': %s", keyfile, strerror(errno)); |
d03ab969 |
148 | } |
149 | |
150 | /* --- @doclose@ --- * |
151 | * |
152 | * Arguments: @key_file *f@ = pointer to key file block |
153 | * |
154 | * Returns: --- |
155 | * |
156 | * Use: Closes a key file and handles errors by panicking |
157 | * appropriately. |
158 | */ |
159 | |
160 | static void doclose(key_file *f) |
161 | { |
162 | switch (key_close(f)) { |
163 | case KWRITE_FAIL: |
164 | die(EXIT_FAILURE, "couldn't write file `%s': %s", |
165 | keyfile, strerror(errno)); |
166 | case KWRITE_BROKEN: |
167 | die(EXIT_FAILURE, "keyring file `%s' broken: %s (repair manually)", |
168 | keyfile, strerror(errno)); |
169 | } |
170 | } |
171 | |
172 | /* --- @setattr@ --- * |
173 | * |
174 | * Arguments: @key_file *f@ = pointer to key file block |
175 | * @key *k@ = pointer to key block |
176 | * @char *v[]@ = array of assignments (overwritten!) |
177 | * |
178 | * Returns: --- |
179 | * |
180 | * Use: Applies the attribute assignments to the key. |
181 | */ |
182 | |
183 | static void setattr(key_file *f, key *k, char *v[]) |
184 | { |
185 | while (*v) { |
252c122d |
186 | int err; |
d03ab969 |
187 | char *p = *v; |
188 | size_t eq = strcspn(p, "="); |
72f13799 |
189 | if (!p[eq]) { |
190 | moan("invalid assignment: `%s' (ignored)", p); |
191 | v++; |
192 | continue; |
193 | } |
d03ab969 |
194 | p[eq] = 0; |
195 | p += eq + 1; |
252c122d |
196 | if ((err = key_putattr(f, k, *v, *p ? p : 0)) != 0) |
197 | die(EXIT_FAILURE, "couldn't set attributes: %s", key_strerror(err)); |
d03ab969 |
198 | v++; |
199 | } |
200 | } |
201 | |
252c122d |
202 | /*----- Key generation ----------------------------------------------------*/ |
203 | |
204 | /* --- Key generation parameters --- */ |
205 | |
206 | typedef struct keyopts { |
207 | key_file *kf; /* Pointer to key file */ |
208 | key *k; /* Pointer to the actual key */ |
209 | dstr tag; /* Full tag name for the key */ |
210 | unsigned f; /* Flags for the new key */ |
211 | unsigned bits, qbits; /* Bit length for the new key */ |
1ba83484 |
212 | const char *curve; /* Elliptic curve name/info */ |
252c122d |
213 | key *p; /* Parameters key-data */ |
214 | } keyopts; |
215 | |
16efd15b |
216 | #define f_bogus 1u /* Error in parsing */ |
217 | #define f_lock 2u /* Passphrase-lock private key */ |
218 | #define f_quiet 4u /* Don't show a progress indicator */ |
219 | #define f_limlee 8u /* Generate Lim-Lee primes */ |
220 | #define f_subgroup 16u /* Generate a subgroup */ |
ce70ec47 |
221 | #define f_retag 32u /* Remove any existing tag */ |
252c122d |
222 | |
223 | /* --- @dolock@ --- * |
224 | * |
225 | * Arguments: @keyopts *k@ = key generation options |
226 | * @key_data *kd@ = pointer to key data to lock |
227 | * @const char *t@ = tag suffix or null |
228 | * |
229 | * Returns: --- |
230 | * |
231 | * Use: Does passphrase locking on new keys. |
232 | */ |
233 | |
234 | static void dolock(keyopts *k, key_data *kd, const char *t) |
235 | { |
236 | if (!(k->f & f_lock)) |
237 | return; |
238 | if (t) |
239 | dstr_putf(&k->tag, ".%s", t); |
240 | if (key_plock(k->tag.buf, kd, kd)) |
241 | die(EXIT_FAILURE, "couldn't lock key"); |
242 | } |
243 | |
244 | /* --- @mpkey@ --- * |
245 | * |
246 | * Arguments: @key_data *kd@ = pointer to parent key block |
247 | * @const char *tag@ = pointer to tag string |
248 | * @mp *m@ = integer to store |
249 | * @unsigned f@ = flags to set |
250 | * |
251 | * Returns: --- |
252 | * |
253 | * Use: Sets a multiprecision integer subkey. |
254 | */ |
255 | |
256 | static void mpkey(key_data *kd, const char *tag, mp *m, unsigned f) |
257 | { |
258 | key_data *kkd = key_structcreate(kd, tag); |
259 | key_mp(kkd, m); |
260 | kkd->e |= f; |
261 | } |
262 | |
263 | /* --- @copyparam@ --- * |
264 | * |
265 | * Arguments: @keyopts *k@ = pointer to key options |
266 | * @const char **pp@ = checklist of parameters |
267 | * |
268 | * Returns: Nonzero if parameters copied; zero if you have to generate |
269 | * them. |
270 | * |
271 | * Use: Copies parameters from a source key to the current one. |
272 | */ |
273 | |
274 | static int copyparam(keyopts *k, const char **pp) |
275 | { |
276 | key_filter kf; |
277 | |
278 | /* --- Quick check if no parameters supplied --- */ |
279 | |
280 | if (!k->p) |
281 | return (0); |
282 | |
283 | /* --- Run through the checklist --- */ |
284 | |
285 | while (*pp) { |
286 | key_data *kd = key_structfind(&k->p->k, *pp); |
287 | if (!kd) |
288 | die(EXIT_FAILURE, "bad parameter key: parameter `%s' not found", *pp); |
289 | if ((kd->e & KF_CATMASK) != KCAT_SHARE) |
290 | die(EXIT_FAILURE, "bad parameter key: subkey `%s' is not shared", *pp); |
291 | pp++; |
292 | } |
293 | |
294 | /* --- Copy over the parameters --- */ |
295 | |
296 | kf.f = KCAT_SHARE; |
297 | kf.m = KF_CATMASK; |
298 | if (!key_copy(&k->k->k, &k->p->k, &kf)) |
299 | die(EXIT_FAILURE, "unexpected failure while copying parameters"); |
300 | return (1); |
301 | } |
302 | |
303 | /* --- @getmp@ --- * |
304 | * |
305 | * Arguments: @key_data *k@ = pointer to key data block |
306 | * @const char *tag@ = tag string to use |
307 | * |
308 | * Returns: Pointer to multiprecision integer key item. |
309 | * |
310 | * Use: Fetches an MP key component. |
311 | */ |
312 | |
313 | static mp *getmp(key_data *k, const char *tag) |
314 | { |
315 | k = key_structfind(k, tag); |
316 | if (!k) |
317 | die(EXIT_FAILURE, "unexpected failure looking up subkey `%s'", tag); |
318 | if ((k->e & KF_ENCMASK) != KENC_MP) |
319 | die(EXIT_FAILURE, "subkey `%s' has an incompatible type"); |
320 | return (k->u.m); |
321 | } |
322 | |
052b36d0 |
323 | /* --- @keyrand@ --- * |
324 | * |
325 | * Arguments: @key_file *kf@ = pointer to key file |
326 | * @const char *id@ = pointer to key id (or null) |
327 | * |
328 | * Returns: --- |
329 | * |
330 | * Use: Keys the random number generator. |
331 | */ |
332 | |
333 | static void keyrand(key_file *kf, const char *id) |
334 | { |
335 | key *k; |
336 | |
337 | /* --- Find the key --- */ |
338 | |
339 | if (id) { |
340 | if ((k = key_bytag(kf, id)) == 0) |
341 | die(EXIT_FAILURE, "key `%s' not found", id); |
342 | } else |
343 | k = key_bytype(kf, "catacomb-rand"); |
344 | |
345 | if (k) { |
346 | key_data *kd = &k->k, kkd; |
347 | |
348 | again: |
349 | switch (kd->e & KF_ENCMASK) { |
350 | case KENC_BINARY: |
351 | break; |
352 | case KENC_ENCRYPT: { |
353 | dstr d = DSTR_INIT; |
354 | key_fulltag(k, &d); |
355 | if (key_punlock(d.buf, kd, &kkd)) |
356 | die(EXIT_FAILURE, "error unlocking key `%s'", d.buf); |
357 | dstr_destroy(&d); |
358 | kd = &kkd; |
359 | } goto again; |
360 | default: { |
361 | dstr d = DSTR_INIT; |
362 | key_fulltag(k, &d); |
363 | die(EXIT_FAILURE, "bad encoding type for key `%s'", d.buf); |
364 | } break; |
365 | } |
366 | |
367 | /* --- Key the generator --- */ |
368 | |
369 | rand_key(RAND_GLOBAL, kd->u.k.k, kd->u.k.sz); |
370 | if (kd == &kkd) |
371 | key_destroy(&kkd); |
372 | } |
373 | } |
374 | |
252c122d |
375 | /* --- Key generation algorithms --- */ |
376 | |
377 | static void alg_binary(keyopts *k) |
378 | { |
379 | unsigned sz; |
380 | unsigned m; |
381 | octet *p; |
382 | |
383 | if (!k->bits) |
384 | k->bits = 128; |
385 | if (k->p) |
386 | die(EXIT_FAILURE, "no shared parameters for binary keys"); |
387 | |
388 | sz = (k->bits + 7) >> 3; |
389 | p = sub_alloc(sz); |
390 | m = (1 << (((k->bits - 1) & 7) + 1)) - 1; |
9219a5d6 |
391 | rand_get(RAND_GLOBAL, p, sz); |
252c122d |
392 | *p &= m; |
393 | key_binary(&k->k->k, p, sz); |
394 | k->k->k.e |= KCAT_SYMM | KF_BURN; |
395 | memset(p, 0, sz); |
396 | sub_free(p, sz); |
397 | dolock(k, &k->k->k, 0); |
398 | } |
399 | |
400 | static void alg_des(keyopts *k) |
401 | { |
402 | unsigned sz; |
403 | octet *p; |
404 | int i; |
405 | |
406 | if (!k->bits) |
1ba83484 |
407 | k->bits = 168; |
252c122d |
408 | if (k->p) |
409 | die(EXIT_FAILURE, "no shared parameters for DES keys"); |
410 | if (k->bits % 56 || k->bits > 168) |
411 | die(EXIT_FAILURE, "DES keys must be 56, 112 or 168 bits long"); |
412 | |
413 | sz = k->bits / 7; |
414 | p = sub_alloc(sz); |
9219a5d6 |
415 | rand_get(RAND_GLOBAL, p, sz); /* Too much work done here! */ |
252c122d |
416 | for (i = 0; i < sz; i++) { |
052b36d0 |
417 | octet x = p[i] | 0x01; |
252c122d |
418 | x = x ^ (x >> 4); |
419 | x = x ^ (x >> 2); |
052b36d0 |
420 | x = x ^ (x >> 1); |
252c122d |
421 | p[i] = (p[i] & 0xfe) | (x & 0x01); |
422 | } |
423 | key_binary(&k->k->k, p, sz); |
424 | k->k->k.e |= KCAT_SYMM | KF_BURN; |
425 | memset(p, 0, sz); |
426 | sub_free(p, sz); |
427 | dolock(k, &k->k->k, 0); |
428 | } |
429 | |
430 | static void alg_rsa(keyopts *k) |
431 | { |
ab0ca95f |
432 | rsa_priv rp; |
252c122d |
433 | key_data *kd; |
434 | |
435 | /* --- Sanity checking --- */ |
436 | |
437 | if (k->p) |
438 | die(EXIT_FAILURE, "no shared parameters for RSA keys"); |
439 | if (!k->bits) |
440 | k->bits = 1024; |
441 | |
442 | /* --- Generate the RSA parameters --- */ |
443 | |
444 | if (rsa_gen(&rp, k->bits, &rand_global, 0, |
445 | (k->f & f_quiet) ? 0 : pgen_ev, 0)) |
446 | die(EXIT_FAILURE, "RSA key generation failed"); |
447 | |
448 | /* --- Run a test encryption --- */ |
449 | |
450 | { |
451 | grand *g = fibrand_create(rand_global.ops->word(&rand_global)); |
ab0ca95f |
452 | rsa_pub rpp; |
252c122d |
453 | mp *m = mprand_range(MP_NEW, rp.n, g, 0); |
454 | mp *c; |
455 | |
ab0ca95f |
456 | rpp.n = rp.n; |
457 | rpp.e = rp.e; |
458 | c = rsa_qpubop(&rpp, MP_NEW, m); |
459 | c = rsa_qprivop(&rp, c, c, g); |
252c122d |
460 | |
4b536f42 |
461 | if (!MP_EQ(c, m)) |
252c122d |
462 | die(EXIT_FAILURE, "test encryption failed"); |
463 | mp_drop(c); |
464 | mp_drop(m); |
465 | g->ops->destroy(g); |
466 | } |
467 | |
468 | /* --- Allrighty then --- */ |
469 | |
470 | kd = &k->k->k; |
471 | key_structure(kd); |
472 | mpkey(kd, "n", rp.n, KCAT_PUB); |
473 | mpkey(kd, "e", rp.e, KCAT_PUB); |
474 | |
475 | kd = key_structcreate(kd, "private"); |
476 | key_structure(kd); |
477 | mpkey(kd, "d", rp.d, KCAT_PRIV | KF_BURN); |
478 | mpkey(kd, "p", rp.p, KCAT_PRIV | KF_BURN); |
479 | mpkey(kd, "q", rp.q, KCAT_PRIV | KF_BURN); |
480 | mpkey(kd, "q-inv", rp.q_inv, KCAT_PRIV | KF_BURN); |
481 | mpkey(kd, "d-mod-p", rp.dp, KCAT_PRIV | KF_BURN); |
482 | mpkey(kd, "d-mod-q", rp.dq, KCAT_PRIV | KF_BURN); |
483 | dolock(k, kd, "private"); |
484 | |
ab0ca95f |
485 | rsa_privfree(&rp); |
252c122d |
486 | } |
487 | |
488 | static void alg_dsaparam(keyopts *k) |
489 | { |
490 | static const char *pl[] = { "q", "p", "g", 0 }; |
491 | if (!copyparam(k, pl)) { |
492 | dsa_param dp; |
493 | octet *p; |
494 | size_t sz; |
495 | dstr d = DSTR_INIT; |
496 | base64_ctx c; |
497 | key_data *kd = &k->k->k; |
f4f8e305 |
498 | dsa_seed ds; |
252c122d |
499 | |
500 | /* --- Choose appropriate bit lengths if necessary --- */ |
501 | |
502 | if (!k->qbits) |
503 | k->qbits = 160; |
504 | if (!k->bits) |
505 | k->bits = 768; |
506 | |
507 | /* --- Allocate a seed block --- */ |
508 | |
509 | sz = (k->qbits + 7) >> 3; |
510 | p = sub_alloc(sz); |
9219a5d6 |
511 | rand_get(RAND_GLOBAL, p, sz); |
252c122d |
512 | |
513 | /* --- Allocate the parameters --- */ |
514 | |
f4f8e305 |
515 | if (dsa_gen(&dp, k->qbits, k->bits, 0, p, sz, &ds, |
40d5a112 |
516 | (k->f & f_quiet) ? 0 : pgen_ev, 0)) |
252c122d |
517 | die(EXIT_FAILURE, "DSA parameter generation failed"); |
518 | |
519 | /* --- Store the parameters --- */ |
520 | |
521 | key_structure(kd); |
522 | mpkey(kd, "q", dp.q, KCAT_SHARE); |
523 | mpkey(kd, "p", dp.p, KCAT_SHARE); |
524 | mpkey(kd, "g", dp.g, KCAT_SHARE); |
525 | mp_drop(dp.q); |
526 | mp_drop(dp.p); |
527 | mp_drop(dp.g); |
528 | |
529 | /* --- Store the seed for future verification --- */ |
530 | |
531 | base64_init(&c); |
532 | c.maxline = 0; |
533 | c.indent = ""; |
f4f8e305 |
534 | base64_encode(&c, ds.p, ds.sz, &d); |
252c122d |
535 | base64_encode(&c, 0, 0, &d); |
536 | key_putattr(k->kf, k->k, "seed", d.buf); |
f4f8e305 |
537 | DRESET(&d); |
538 | dstr_putf(&d, "%u", ds.count); |
539 | key_putattr(k->kf, k->k, "count", d.buf); |
540 | xfree(ds.p); |
252c122d |
541 | sub_free(p, sz); |
542 | dstr_destroy(&d); |
543 | } |
544 | } |
545 | |
546 | static void alg_dsa(keyopts *k) |
547 | { |
548 | mp *q, *p, *g; |
549 | mp *x, *y; |
550 | mpmont mm; |
551 | key_data *kd = &k->k->k; |
552 | |
553 | /* --- Get the shared parameters --- */ |
554 | |
555 | alg_dsaparam(k); |
556 | q = getmp(kd, "q"); |
557 | p = getmp(kd, "p"); |
558 | g = getmp(kd, "g"); |
559 | |
560 | /* --- Choose a private key --- */ |
561 | |
9219a5d6 |
562 | x = mprand_range(MP_NEWSEC, q, &rand_global, 0); |
252c122d |
563 | mpmont_create(&mm, p); |
564 | y = mpmont_exp(&mm, MP_NEW, g, x); |
565 | |
566 | /* --- Store everything away --- */ |
567 | |
568 | mpkey(kd, "y", y, KCAT_PUB); |
569 | |
570 | kd = key_structcreate(kd, "private"); |
571 | key_structure(kd); |
572 | mpkey(kd, "x", x, KCAT_PRIV | KF_BURN); |
573 | dolock(k, kd, "private"); |
052b36d0 |
574 | |
575 | mp_drop(x); mp_drop(y); |
252c122d |
576 | } |
577 | |
578 | static void alg_dhparam(keyopts *k) |
579 | { |
052b36d0 |
580 | static const char *pl[] = { "p", "q", "g", 0 }; |
252c122d |
581 | if (!copyparam(k, pl)) { |
052b36d0 |
582 | dh_param dp; |
252c122d |
583 | key_data *kd = &k->k->k; |
40d5a112 |
584 | int rc; |
252c122d |
585 | |
586 | if (!k->bits) |
587 | k->bits = 1024; |
588 | |
589 | /* --- Choose a large safe prime number --- */ |
590 | |
40d5a112 |
591 | if (k->f & f_limlee) { |
592 | mp **f; |
593 | size_t nf; |
594 | if (!k->qbits) |
595 | k->qbits = 256; |
596 | rc = dh_limlee(&dp, k->qbits, k->bits, |
597 | (k->f & f_subgroup) ? DH_SUBGROUP : 0, |
598 | 0, &rand_global, (k->f & f_quiet) ? 0 : pgen_ev, 0, |
599 | (k->f & f_quiet) ? 0 : pgen_evspin, 0, &nf, &f); |
600 | if (!rc) { |
601 | dstr d = DSTR_INIT; |
602 | size_t i; |
603 | for (i = 0; i < nf; i++) { |
604 | if (i) |
605 | dstr_puts(&d, ", "); |
606 | mp_writedstr(f[i], &d, 10); |
607 | mp_drop(f[i]); |
608 | } |
609 | key_putattr(k->kf, k->k, "factors", d.buf); |
610 | dstr_destroy(&d); |
611 | } |
612 | } else |
613 | rc = dh_gen(&dp, k->qbits, k->bits, 0, &rand_global, |
614 | (k->f & f_quiet) ? 0 : pgen_ev, 0); |
615 | |
616 | if (rc) |
252c122d |
617 | die(EXIT_FAILURE, "Diffie-Hellman parameter generation failed"); |
618 | |
619 | key_structure(kd); |
052b36d0 |
620 | mpkey(kd, "p", dp.p, KCAT_SHARE); |
621 | mpkey(kd, "q", dp.q, KCAT_SHARE); |
622 | mpkey(kd, "g", dp.g, KCAT_SHARE); |
623 | mp_drop(dp.q); |
624 | mp_drop(dp.p); |
625 | mp_drop(dp.g); |
252c122d |
626 | } |
627 | } |
628 | |
629 | static void alg_dh(keyopts *k) |
630 | { |
631 | mp *x, *y; |
052b36d0 |
632 | mp *p, *q, *g; |
252c122d |
633 | mpmont mm; |
634 | key_data *kd = &k->k->k; |
635 | |
636 | /* --- Get the shared parameters --- */ |
637 | |
638 | alg_dhparam(k); |
639 | p = getmp(kd, "p"); |
052b36d0 |
640 | q = getmp(kd, "q"); |
252c122d |
641 | g = getmp(kd, "g"); |
642 | |
643 | /* --- Choose a suitable private key --- * |
644 | * |
645 | * Since %$g$% has order %$q$%, choose %$x < q$%. |
646 | */ |
647 | |
9219a5d6 |
648 | x = mprand_range(MP_NEWSEC, q, &rand_global, 0); |
252c122d |
649 | |
650 | /* --- Compute the public key %$y = g^x \bmod p$% --- */ |
651 | |
652 | mpmont_create(&mm, p); |
052b36d0 |
653 | y = mpmont_exp(&mm, MP_NEW, g, x); |
252c122d |
654 | mpmont_destroy(&mm); |
655 | |
656 | /* --- Store everything away --- */ |
657 | |
658 | mpkey(kd, "y", y, KCAT_PUB); |
659 | |
660 | kd = key_structcreate(kd, "private"); |
661 | key_structure(kd); |
662 | mpkey(kd, "x", x, KCAT_PRIV | KF_BURN); |
663 | dolock(k, kd, "private"); |
052b36d0 |
664 | |
665 | mp_drop(x); mp_drop(y); |
252c122d |
666 | } |
667 | |
668 | static void alg_bbs(keyopts *k) |
669 | { |
ab0ca95f |
670 | bbs_priv bp; |
252c122d |
671 | key_data *kd; |
252c122d |
672 | |
673 | /* --- Sanity checking --- */ |
674 | |
675 | if (k->p) |
676 | die(EXIT_FAILURE, "no shared parameters for Blum-Blum-Shub keys"); |
677 | if (!k->bits) |
678 | k->bits = 1024; |
679 | |
680 | /* --- Generate the BBS parameters --- */ |
681 | |
052b36d0 |
682 | if (bbs_gen(&bp, k->bits, &rand_global, 0, |
683 | (k->f & f_quiet) ? 0 : pgen_ev, 0)) |
252c122d |
684 | die(EXIT_FAILURE, "Blum-Blum-Shub key generation failed"); |
252c122d |
685 | |
686 | /* --- Allrighty then --- */ |
687 | |
688 | kd = &k->k->k; |
689 | key_structure(kd); |
690 | mpkey(kd, "n", bp.n, KCAT_PUB); |
691 | |
692 | kd = key_structcreate(kd, "private"); |
693 | key_structure(kd); |
694 | mpkey(kd, "p", bp.p, KCAT_PRIV | KF_BURN); |
695 | mpkey(kd, "q", bp.q, KCAT_PRIV | KF_BURN); |
696 | dolock(k, kd, "private"); |
697 | |
ab0ca95f |
698 | bbs_privfree(&bp); |
252c122d |
699 | } |
700 | |
1ba83484 |
701 | static void alg_ecparam(keyopts *k) |
702 | { |
703 | static const char *pl[] = { "curve", 0 }; |
704 | if (!copyparam(k, pl)) { |
705 | ec_info ei; |
706 | const char *e; |
707 | key_data *kd = &k->k->k; |
708 | |
709 | /* --- Decide on a curve --- */ |
710 | |
711 | if (!k->bits) k->bits = 256; |
712 | if (!k->curve) { |
713 | if (k->bits <= 56) k->curve = "secp112r1"; |
714 | else if (k->bits <= 64) k->curve = "secp128r1"; |
715 | else if (k->bits <= 80) k->curve = "secp160r1"; |
716 | else if (k->bits <= 96) k->curve = "secp192r1"; |
717 | else if (k->bits <= 112) k->curve = "secp224r1"; |
718 | else if (k->bits <= 128) k->curve = "secp256r1"; |
719 | else if (k->bits <= 192) k->curve = "secp384r1"; |
720 | else if (k->bits <= 256) k->curve = "secp521r1"; |
721 | else |
722 | die(EXIT_FAILURE, "no built-in curves provide %u-bit security", |
723 | k->bits); |
724 | } |
725 | |
726 | /* --- Check it --- */ |
727 | |
728 | if ((e = ec_getinfo(&ei, k->curve)) != 0) |
729 | die(EXIT_FAILURE, "error in curve spec: %s", e); |
730 | if (!(k->f & f_quiet) && (e = ec_checkinfo(&ei, &rand_global)) != 0) |
731 | moan("WARNING! curve check failed: %s", e); |
732 | ec_freeinfo(&ei); |
733 | |
734 | /* --- Write out the answer --- */ |
735 | |
736 | key_structure(kd); |
737 | kd = key_structcreate(kd, "curve"); |
738 | key_string(kd, k->curve); |
739 | kd->e |= KCAT_SHARE; |
740 | } |
741 | } |
742 | |
743 | static void alg_ec(keyopts *k) |
744 | { |
745 | key_data *kd = &k->k->k; |
746 | key_data *kkd; |
747 | mp *x = MP_NEW; |
748 | ec p = EC_INIT; |
749 | const char *e; |
750 | ec_info ei; |
751 | |
752 | /* --- Get the curve --- */ |
753 | |
754 | alg_ecparam(k); |
755 | if ((kkd = key_structfind(kd, "curve")) == 0) |
756 | die(EXIT_FAILURE, "unexpected failure looking up subkey `curve')"); |
757 | if ((kkd->e & KF_ENCMASK) != KENC_STRING) |
758 | die(EXIT_FAILURE, "subkey `curve' is not a string"); |
759 | if ((e = ec_getinfo(&ei, kkd->u.p)) != 0) |
760 | die(EXIT_FAILURE, "error in curve spec: %s", e); |
761 | |
762 | /* --- Invent a private exponent and compute the public key --- */ |
763 | |
764 | x = mprand_range(MP_NEWSEC, ei.r, &rand_global, 0); |
765 | ec_mul(ei.c, &p, &ei.g, x); |
766 | |
767 | /* --- Store everything away --- */ |
768 | |
769 | kkd = key_structcreate(kd, "p"); |
770 | key_ec(kkd, &p); |
771 | kkd->e |= KCAT_PUB; |
772 | kkd = key_structcreate(kd, "private"); |
773 | key_structure(kkd); |
774 | mpkey(kkd, "x", x, KCAT_PRIV | KF_BURN); |
775 | |
776 | /* --- Done --- */ |
777 | |
778 | ec_freeinfo(&ei); |
779 | mp_drop(x); |
780 | } |
781 | |
252c122d |
782 | /* --- The algorithm tables --- */ |
783 | |
784 | typedef struct keyalg { |
785 | const char *name; |
786 | void (*proc)(keyopts *o); |
787 | const char *help; |
788 | } keyalg; |
789 | |
790 | static keyalg algtab[] = { |
791 | { "binary", alg_binary, "Plain binary data" }, |
792 | { "des", alg_des, "Binary with DES-style parity" }, |
793 | { "rsa", alg_rsa, "RSA public-key encryption" }, |
794 | { "dsa", alg_dsa, "DSA digital signatures" }, |
795 | { "dsa-param", alg_dsaparam, "DSA shared parameters" }, |
796 | { "dh", alg_dh, "Diffie-Hellman key exchange" }, |
797 | { "dh-param", alg_dhparam, "Diffie-Hellman parameters" }, |
798 | { "bbs", alg_bbs, "Blum-Blum-Shub generator" }, |
1ba83484 |
799 | { "ec-param", alg_ecparam, "Elliptic curve parameters" }, |
800 | { "ec", alg_ec, "Elliptic curve crypto" }, |
252c122d |
801 | { 0, 0 } |
802 | }; |
d03ab969 |
803 | |
804 | /* --- @cmd_add@ --- */ |
805 | |
806 | static int cmd_add(int argc, char *argv[]) |
807 | { |
808 | key_file f; |
d03ab969 |
809 | time_t exp = KEXP_EXPIRE; |
252c122d |
810 | const char *tag = 0, *ptag = 0; |
d03ab969 |
811 | const char *c = 0; |
252c122d |
812 | keyalg *alg = algtab; |
052b36d0 |
813 | const char *rtag = 0; |
252c122d |
814 | keyopts k = { 0, 0, DSTR_INIT, 0, 0, 0, 0 }; |
d03ab969 |
815 | |
816 | /* --- Parse options for the subcommand --- */ |
817 | |
818 | for (;;) { |
819 | static struct option opt[] = { |
252c122d |
820 | { "algorithm", OPTF_ARGREQ, 0, 'a' }, |
d03ab969 |
821 | { "bits", OPTF_ARGREQ, 0, 'b' }, |
252c122d |
822 | { "qbits", OPTF_ARGREQ, 0, 'B' }, |
823 | { "parameters", OPTF_ARGREQ, 0, 'p' }, |
d03ab969 |
824 | { "expire", OPTF_ARGREQ, 0, 'e' }, |
825 | { "comment", OPTF_ARGREQ, 0, 'c' }, |
252c122d |
826 | { "tag", OPTF_ARGREQ, 0, 't' }, |
ce70ec47 |
827 | { "rand-id", OPTF_ARGREQ, 0, 'R' }, |
1ba83484 |
828 | { "curve", OPTF_ARGREQ, 0, 'C' }, |
252c122d |
829 | { "lock", 0, 0, 'l' }, |
830 | { "quiet", 0, 0, 'q' }, |
40d5a112 |
831 | { "lim-lee", 0, 0, 'L' }, |
832 | { "subgroup", 0, 0, 'S' }, |
d03ab969 |
833 | { 0, 0, 0, 0 } |
834 | }; |
1ba83484 |
835 | int i = mdwopt(argc, argv, "+a:b:B:p:e:c:t:R:C:lqrLS", opt, 0, 0, 0); |
d03ab969 |
836 | if (i < 0) |
837 | break; |
838 | |
839 | /* --- Handle the various options --- */ |
840 | |
841 | switch (i) { |
842 | |
252c122d |
843 | /* --- Read an algorithm name --- */ |
844 | |
845 | case 'a': { |
846 | keyalg *a; |
847 | size_t sz = strlen(optarg); |
848 | |
849 | if (strcmp(optarg, "list") == 0) { |
850 | for (a = algtab; a->name; a++) |
851 | printf("%-10s %s\n", a->name, a->help); |
852 | return (0); |
853 | } |
854 | |
855 | alg = 0; |
856 | for (a = algtab; a->name; a++) { |
857 | if (strncmp(optarg, a->name, sz) == 0) { |
858 | if (a->name[sz] == 0) { |
859 | alg = a; |
860 | break; |
861 | } else if (alg) |
862 | die(EXIT_FAILURE, "ambiguous algorithm name `%s'", optarg); |
863 | else |
864 | alg = a; |
865 | } |
866 | } |
867 | if (!alg) |
868 | die(EXIT_FAILURE, "unknown algorithm name `%s'", optarg); |
869 | } break; |
870 | |
d03ab969 |
871 | /* --- Bits must be nonzero and a multiple of 8 --- */ |
872 | |
252c122d |
873 | case 'b': { |
874 | char *p; |
875 | k.bits = strtoul(optarg, &p, 0); |
876 | if (k.bits == 0 || *p != 0) |
877 | die(EXIT_FAILURE, "bad bitlength `%s'", optarg); |
878 | } break; |
879 | |
880 | case 'B': { |
881 | char *p; |
882 | k.qbits = strtoul(optarg, &p, 0); |
883 | if (k.qbits == 0 || *p != 0) |
884 | die(EXIT_FAILURE, "bad bitlength `%s'", optarg); |
885 | } break; |
886 | |
887 | /* --- Parameter selection --- */ |
888 | |
889 | case 'p': |
890 | ptag = optarg; |
d03ab969 |
891 | break; |
892 | |
893 | /* --- Expiry dates get passed to @get_date@ for parsing --- */ |
894 | |
895 | case 'e': |
252c122d |
896 | if (strncmp(optarg, "forever", strlen(optarg)) == 0) |
d03ab969 |
897 | exp = KEXP_FOREVER; |
898 | else { |
899 | exp = get_date(optarg, 0); |
900 | if (exp == -1) |
252c122d |
901 | die(EXIT_FAILURE, "bad expiry date `%s'", optarg); |
d03ab969 |
902 | } |
903 | break; |
904 | |
905 | /* --- Store comments without interpretation --- */ |
906 | |
907 | case 'c': |
252c122d |
908 | if (key_chkcomment(optarg)) |
909 | die(EXIT_FAILURE, "bad comment string `%s'", optarg); |
d03ab969 |
910 | c = optarg; |
911 | break; |
912 | |
1ba83484 |
913 | /* --- Elliptic curve parameters --- */ |
914 | |
915 | case 'C': |
916 | if (strcmp(optarg, "list") == 0) { |
917 | const ecentry *ee; |
918 | printf("Built-in elliptic curves:\n"); |
919 | for (ee = ectab; ee->name; ee++) |
920 | printf(" %s\n", ee->name); |
921 | exit(0); |
922 | } |
923 | k.curve = optarg; |
924 | break; |
925 | |
252c122d |
926 | /* --- Store tags --- */ |
927 | |
928 | case 't': |
929 | if (key_chkident(optarg)) |
930 | die(EXIT_FAILURE, "bad tag string `%s'", optarg); |
931 | tag = optarg; |
932 | break; |
ce70ec47 |
933 | case 'r': |
934 | k.f |= f_retag; |
935 | break; |
252c122d |
936 | |
937 | /* --- Other flags --- */ |
938 | |
ce70ec47 |
939 | case 'R': |
052b36d0 |
940 | rtag = optarg; |
941 | break; |
252c122d |
942 | case 'l': |
943 | k.f |= f_lock; |
944 | break; |
945 | case 'q': |
946 | k.f |= f_quiet; |
947 | break; |
40d5a112 |
948 | case 'L': |
949 | k.f |= f_limlee; |
950 | break; |
951 | case 'S': |
952 | k.f |= f_subgroup; |
953 | break; |
252c122d |
954 | |
d03ab969 |
955 | /* --- Other things are bogus --- */ |
956 | |
957 | default: |
252c122d |
958 | k.f |= f_bogus; |
d03ab969 |
959 | break; |
960 | } |
961 | } |
962 | |
252c122d |
963 | /* --- Various sorts of bogosity --- */ |
d03ab969 |
964 | |
252c122d |
965 | if ((k.f & f_bogus) || optind + 1 > argc) { |
d03ab969 |
966 | die(EXIT_FAILURE, |
252c122d |
967 | "Usage: add [options] type [attr...]"); |
d03ab969 |
968 | } |
252c122d |
969 | if (key_chkident(argv[optind])) |
970 | die(EXIT_FAILURE, "bad key type `%s'", argv[optind]); |
971 | |
972 | /* --- Set up various bits of the state --- */ |
973 | |
d03ab969 |
974 | if (exp == KEXP_EXPIRE) |
975 | exp = time(0) + 14 * 24 * 60 * 60; |
976 | |
252c122d |
977 | /* --- Open the file and create the basic key block --- * |
978 | * |
979 | * Keep on generating keyids until one of them doesn't collide. |
980 | */ |
d03ab969 |
981 | |
252c122d |
982 | doopen(&f, KOPEN_WRITE); |
983 | k.kf = &f; |
984 | |
052b36d0 |
985 | /* --- Key the generator --- */ |
986 | |
987 | keyrand(&f, rtag); |
988 | |
252c122d |
989 | for (;;) { |
990 | uint32 id = rand_global.ops->word(&rand_global); |
991 | int err; |
992 | k.k = key_new(&f, id, argv[optind], exp, &err); |
993 | if (k.k) |
994 | break; |
995 | if (err != KERR_DUPID) |
996 | die(EXIT_FAILURE, "error adding new key: %s", key_strerror(err)); |
997 | } |
d03ab969 |
998 | |
252c122d |
999 | /* --- Set various simple attributes --- */ |
d03ab969 |
1000 | |
252c122d |
1001 | if (tag) { |
ce70ec47 |
1002 | int err; |
1003 | key *kk; |
1004 | if (k.f & f_retag) { |
1005 | if ((kk = key_bytag(&f, tag)) != 0 && strcmp(kk->tag, tag) == 0) |
1006 | key_settag(&f, kk, 0); |
1007 | } |
1008 | if ((err = key_settag(&f, k.k, tag)) != 0) |
252c122d |
1009 | die(EXIT_FAILURE, "error setting key tag: %s", key_strerror(err)); |
1010 | } |
d03ab969 |
1011 | |
252c122d |
1012 | if (c) { |
1013 | int err = key_setcomment(&f, k.k, c); |
1014 | if (err) |
1015 | die(EXIT_FAILURE, "error setting key comment: %s", key_strerror(err)); |
1016 | } |
1017 | |
1018 | setattr(&f, k.k, argv + optind + 1); |
1019 | |
1020 | key_fulltag(k.k, &k.tag); |
1021 | |
1022 | /* --- Find the parameter key --- */ |
1023 | |
1024 | if (ptag) { |
1025 | if ((k.p = key_bytag(&f, ptag)) == 0) |
1026 | die(EXIT_FAILURE, "parameter key `%s' not found", ptag); |
1027 | if ((k.p->k.e & KF_ENCMASK) != KENC_STRUCT) |
1028 | die(EXIT_FAILURE, "parameter key `%s' is not structured", ptag); |
1029 | } |
1030 | |
1031 | /* --- Now generate the actual key data --- */ |
1032 | |
1033 | alg->proc(&k); |
1034 | |
1035 | /* --- Done --- */ |
d03ab969 |
1036 | |
d03ab969 |
1037 | doclose(&f); |
1038 | return (0); |
1039 | } |
1040 | |
252c122d |
1041 | /*----- Key listing -------------------------------------------------------*/ |
1042 | |
1043 | /* --- Listing options --- */ |
1044 | |
1045 | typedef struct listopts { |
1046 | const char *tfmt; /* Date format (@strftime@-style) */ |
1047 | int v; /* Verbosity level */ |
1048 | unsigned f; /* Various flags */ |
1049 | time_t t; /* Time now (for key expiry) */ |
1050 | key_filter kf; /* Filter for matching keys */ |
1051 | } listopts; |
1052 | |
1053 | /* --- Listing flags --- */ |
1054 | |
16efd15b |
1055 | #define f_newline 2u /* Write newline before next entry */ |
1056 | #define f_attr 4u /* Written at least one attribute */ |
1057 | #define f_utc 8u /* Emit UTC time, not local time */ |
252c122d |
1058 | |
1059 | /* --- @showkeydata@ --- * |
1060 | * |
1061 | * Arguments: @key_data *k@ = pointer to key to write |
1062 | * @int ind@ = indentation level |
1063 | * @listopts *o@ = listing options |
1064 | * @dstr *d@ = tag string for this subkey |
1065 | * |
1066 | * Returns: --- |
1067 | * |
1068 | * Use: Emits a piece of key data in a human-readable format. |
1069 | */ |
1070 | |
1071 | static void showkeydata(key_data *k, int ind, listopts *o, dstr *d) |
1072 | { |
1073 | #define INDENT(i) do { \ |
1074 | int _i; \ |
1075 | for (_i = 0; _i < (i); _i++) { \ |
1076 | putchar(' '); \ |
1077 | } \ |
1078 | } while (0) |
1079 | |
1080 | switch (k->e & KF_ENCMASK) { |
1081 | |
1082 | /* --- Binary key data --- * |
1083 | * |
1084 | * Emit as a simple hex dump. |
1085 | */ |
1086 | |
1087 | case KENC_BINARY: { |
1088 | const octet *p = k->u.k.k; |
1089 | const octet *l = p + k->u.k.sz; |
1090 | size_t sz = 0; |
1091 | |
1092 | fputs(" {", stdout); |
1093 | while (p < l) { |
1094 | if (sz % 16 == 0) { |
1095 | putchar('\n'); |
1096 | INDENT(ind + 2); |
1097 | } else if (sz % 8 == 0) |
1098 | fputs(" ", stdout); |
1099 | else |
1100 | putc(' ', stdout); |
1101 | printf("%02x", *p++); |
1102 | sz++; |
1103 | } |
1104 | putchar('\n'); |
1105 | INDENT(ind); |
1106 | fputs("}\n", stdout); |
1107 | } break; |
1108 | |
1109 | /* --- Encrypted data --- * |
1110 | * |
1111 | * If the user is sufficiently keen, ask for a passphrase and decrypt the |
1112 | * key. Otherwise just say that it's encrypted and move on. |
1113 | */ |
1114 | |
1115 | case KENC_ENCRYPT: |
1116 | if (o->v <= 3) |
1117 | fputs(" encrypted\n", stdout); |
1118 | else { |
1119 | key_data kd; |
1120 | if (key_punlock(d->buf, k, &kd)) |
1121 | printf(" <failed to unlock %s>\n", d->buf); |
1122 | else { |
1123 | fputs(" encrypted", stdout); |
1124 | showkeydata(&kd, ind, o, d); |
1125 | key_destroy(&kd); |
1126 | } |
1127 | } |
1128 | break; |
1129 | |
1130 | /* --- Integer keys --- * |
1131 | * |
1132 | * Emit as a large integer in decimal. This makes using the key in |
1133 | * `calc' or whatever easier. |
1134 | */ |
1135 | |
1136 | case KENC_MP: |
1137 | putchar(' '); |
1138 | mp_writefile(k->u.m, stdout, 10); |
1139 | putchar('\n'); |
1140 | break; |
1141 | |
1ba83484 |
1142 | /* --- Strings --- */ |
1143 | |
1144 | case KENC_STRING: |
1145 | printf(" `%s'\n", k->u.p); |
1146 | break; |
1147 | |
1148 | /* --- Elliptic curve points --- */ |
1149 | |
1150 | case KENC_EC: |
1151 | fputs(" 0x", stdout); mp_writefile(k->u.e.x, stdout, 16); |
1152 | fputs(", 0x", stdout); mp_writefile(k->u.e.y, stdout, 16); |
1153 | putchar('\n'); |
1154 | break; |
1155 | |
252c122d |
1156 | /* --- Structured keys --- * |
1157 | * |
1158 | * Just iterate over the subkeys. |
1159 | */ |
1160 | |
1161 | case KENC_STRUCT: { |
1162 | sym_iter i; |
1163 | key_struct *ks; |
1164 | size_t n = d->len; |
1165 | |
1166 | fputs(" {\n", stdout); |
1167 | for (sym_mkiter(&i, &k->u.s); (ks = sym_next(&i)) != 0; ) { |
1168 | if (!key_match(&ks->k, &o->kf)) |
1169 | continue; |
1170 | INDENT(ind + 2); |
1171 | printf("%s =", SYM_NAME(ks)); |
1172 | d->len = n; |
1173 | dstr_putf(d, ".%s", SYM_NAME(ks)); |
1174 | showkeydata(&ks->k, ind + 2, o, d); |
1175 | } |
1176 | INDENT(ind); |
1177 | fputs("}\n", stdout); |
1178 | } break; |
1179 | } |
1180 | |
1181 | #undef INDENT |
1182 | } |
1183 | |
1184 | /* --- @showkey@ --- * |
1185 | * |
1186 | * Arguments: @key *k@ = pointer to key to show |
1187 | * @listopts *o@ = pointer to listing options |
1188 | * |
1189 | * Returns: --- |
1190 | * |
1191 | * Use: Emits a listing of a particular key. |
1192 | */ |
1193 | |
1194 | static void showkey(key *k, listopts *o) |
1195 | { |
1196 | char ebuf[24], dbuf[24]; |
1197 | struct tm *tm; |
1198 | |
1199 | /* --- Skip the key if the filter doesn't match --- */ |
1200 | |
1201 | if (!key_match(&k->k, &o->kf)) |
1202 | return; |
1203 | |
1204 | /* --- Sort out the expiry and deletion times --- */ |
1205 | |
1206 | if (KEY_EXPIRED(o->t, k->exp)) |
1207 | strcpy(ebuf, "expired"); |
1208 | else if (k->exp == KEXP_FOREVER) |
1209 | strcpy(ebuf, "forever"); |
1210 | else { |
1211 | tm = (o->f & f_utc) ? gmtime(&k->exp) : localtime(&k->exp); |
1212 | strftime(ebuf, sizeof(ebuf), o->tfmt, tm); |
1213 | } |
1214 | |
1215 | if (KEY_EXPIRED(o->t, k->del)) |
1216 | strcpy(dbuf, "deleted"); |
1217 | else if (k->del == KEXP_FOREVER) |
1218 | strcpy(dbuf, "forever"); |
1219 | else { |
1220 | tm = (o->f & f_utc) ? gmtime(&k->del) : localtime(&k->del); |
1221 | strftime(dbuf, sizeof(dbuf), o->tfmt, tm); |
1222 | } |
1223 | |
1224 | /* --- If in compact format, just display and quit --- */ |
1225 | |
1226 | if (!o->v) { |
1227 | if (!(o->f & f_newline)) { |
1228 | printf("%8s %-20s %-20s %-10s %-10s\n", |
1229 | "Id", "Tag", "Type", "Expire", "Delete"); |
1230 | } |
1231 | printf("%08lx %-20s %-20s %-10s %-10s\n", |
1232 | (unsigned long)k->id, k->tag ? k->tag : "<none>", |
1233 | k->type, ebuf, dbuf); |
1234 | o->f |= f_newline; |
1235 | return; |
1236 | } |
1237 | |
1238 | /* --- Display the standard header --- */ |
1239 | |
1240 | if (o->f & f_newline) |
1241 | fputc('\n', stdout); |
1242 | printf("keyid: %08lx\n", (unsigned long)k->id); |
1243 | printf("tag: %s\n", k->tag ? k->tag : "<none>"); |
1244 | printf("type: %s\n", k->type); |
1245 | printf("expiry: %s\n", ebuf); |
1246 | printf("delete: %s\n", dbuf); |
1247 | printf("comment: %s\n", k->c ? k->c : "<none>"); |
1248 | |
1249 | /* --- Display the attributes --- */ |
1250 | |
1251 | if (o->v > 1) { |
1252 | key_attriter i; |
1253 | const char *av, *an; |
1254 | |
1255 | o->f &= ~f_attr; |
1256 | printf("attributes:"); |
1257 | for (key_mkattriter(&i, k); key_nextattr(&i, &an, &av); ) { |
dce3fb0d |
1258 | printf("\n %s = %s", an, av); |
252c122d |
1259 | o->f |= f_attr; |
1260 | } |
1261 | if (o->f & f_attr) |
1262 | fputc('\n', stdout); |
1263 | else |
1264 | puts(" <none>"); |
1265 | } |
1266 | |
1267 | /* --- If dumping requested, dump the raw key data --- */ |
1268 | |
1269 | if (o->v > 2) { |
1270 | dstr d = DSTR_INIT; |
1271 | fputs("key:", stdout); |
1272 | key_fulltag(k, &d); |
1273 | showkeydata(&k->k, 0, o, &d); |
1274 | dstr_destroy(&d); |
1275 | } |
1276 | |
1277 | o->f |= f_newline; |
1278 | } |
1279 | |
1280 | /* --- @cmd_list@ --- */ |
1281 | |
1282 | static int cmd_list(int argc, char *argv[]) |
1283 | { |
1284 | key_file f; |
1285 | key *k; |
1286 | listopts o = { 0, 0, 0, 0, { 0, 0 } }; |
1287 | |
1288 | /* --- Parse subcommand options --- */ |
1289 | |
1290 | for (;;) { |
1291 | static struct option opt[] = { |
1292 | { "quiet", 0, 0, 'q' }, |
1293 | { "verbose", 0, 0, 'v' }, |
1294 | { "utc", 0, 0, 'u' }, |
1295 | { "filter", OPTF_ARGREQ, 0, 'f' }, |
1296 | { 0, 0, 0, 0 } |
1297 | }; |
1298 | int i = mdwopt(argc, argv, "+uqvf:", opt, 0, 0, 0); |
1299 | if (i < 0) |
1300 | break; |
1301 | |
1302 | switch (i) { |
1303 | case 'u': |
1304 | o.f |= f_utc; |
1305 | break; |
1306 | case 'q': |
1307 | if (o.v) |
1308 | o.v--; |
1309 | break; |
1310 | case 'v': |
1311 | o.v++; |
1312 | break; |
1313 | case 'f': { |
1314 | char *p; |
1315 | int e = key_readflags(optarg, &p, &o.kf.f, &o.kf.m); |
1316 | if (e || *p) |
1317 | die(EXIT_FAILURE, "bad filter string `%s'", optarg); |
1318 | } break; |
1319 | default: |
1320 | o.f |= f_bogus; |
1321 | break; |
1322 | } |
1323 | } |
1324 | |
1325 | if (o.f & f_bogus) |
1326 | die(EXIT_FAILURE, "Usage: list [-uqv] [-f filter] [tag...]"); |
1327 | |
1328 | /* --- Open the key file --- */ |
1329 | |
1330 | doopen(&f, KOPEN_READ); |
1331 | o.t = time(0); |
1332 | |
1333 | /* --- Set up the time format --- */ |
1334 | |
1335 | if (!o.v) |
1336 | o.tfmt = "%Y-%m-%d"; |
1337 | else if (o.f & f_utc) |
1338 | o.tfmt = "%Y-%m-%d %H:%M:%S UTC"; |
1339 | else |
1340 | o.tfmt = "%Y-%m-%d %H:%M:%S %Z"; |
1341 | |
1342 | /* --- If specific keys were requested use them, otherwise do all --- * |
1343 | * |
1344 | * Some day, this might turn into a wildcard match. |
1345 | */ |
1346 | |
1347 | if (optind < argc) { |
1348 | do { |
1349 | if ((k = key_bytag(&f, argv[optind])) != 0) |
1350 | showkey(k, &o); |
1351 | else { |
1352 | moan("key `%s' not found", argv[optind]); |
1353 | o.f |= f_bogus; |
1354 | } |
1355 | optind++; |
1356 | } while (optind < argc); |
1357 | } else { |
1358 | key_iter i; |
1359 | for (key_mkiter(&i, &f); (k = key_next(&i)) != 0; ) |
1360 | showkey(k, &o); |
1361 | } |
1362 | |
1363 | /* --- Done --- */ |
1364 | |
1365 | doclose(&f); |
1366 | if (o.f & f_bogus) |
1367 | return (EXIT_FAILURE); |
1368 | else |
1369 | return (0); |
1370 | } |
1371 | |
1372 | /*----- Command implementation --------------------------------------------*/ |
1373 | |
d03ab969 |
1374 | /* --- @cmd_expire@ --- */ |
1375 | |
1376 | static int cmd_expire(int argc, char *argv[]) |
1377 | { |
1378 | key_file f; |
1379 | key *k; |
d03ab969 |
1380 | int i; |
1381 | int rc = 0; |
1382 | |
1383 | if (argc < 2) |
252c122d |
1384 | die(EXIT_FAILURE, "Usage: expire tag..."); |
d03ab969 |
1385 | doopen(&f, KOPEN_WRITE); |
1386 | for (i = 1; i < argc; i++) { |
252c122d |
1387 | if ((k = key_bytag(&f, argv[i])) != 0) |
d03ab969 |
1388 | key_expire(&f, k); |
1389 | else { |
252c122d |
1390 | moan("key `%s' not found", argv[i]); |
d03ab969 |
1391 | rc = 1; |
1392 | } |
1393 | } |
1394 | doclose(&f); |
1395 | return (rc); |
1396 | } |
1397 | |
1398 | /* --- @cmd_delete@ --- */ |
1399 | |
1400 | static int cmd_delete(int argc, char *argv[]) |
1401 | { |
1402 | key_file f; |
1403 | key *k; |
d03ab969 |
1404 | int i; |
1405 | int rc = 0; |
1406 | |
1407 | if (argc < 2) |
252c122d |
1408 | die(EXIT_FAILURE, "Usage: delete tag..."); |
d03ab969 |
1409 | doopen(&f, KOPEN_WRITE); |
1410 | for (i = 1; i < argc; i++) { |
252c122d |
1411 | if ((k = key_bytag(&f, argv[i])) != 0) |
d03ab969 |
1412 | key_delete(&f, k); |
1413 | else { |
252c122d |
1414 | moan("key `%s' not found", argv[i]); |
d03ab969 |
1415 | rc = 1; |
1416 | } |
1417 | } |
1418 | doclose(&f); |
1419 | return (rc); |
1420 | } |
1421 | |
1422 | /* --- @cmd_setattr@ --- */ |
1423 | |
1424 | static int cmd_setattr(int argc, char *argv[]) |
1425 | { |
1426 | key_file f; |
1427 | key *k; |
d03ab969 |
1428 | |
1429 | if (argc < 3) |
252c122d |
1430 | die(EXIT_FAILURE, "Usage: setattr tag attr..."); |
d03ab969 |
1431 | doopen(&f, KOPEN_WRITE); |
252c122d |
1432 | if ((k = key_bytag(&f, argv[1])) == 0) |
1433 | die(EXIT_FAILURE, "key `%s' not found", argv[1]); |
d03ab969 |
1434 | setattr(&f, k, argv + 2); |
1435 | doclose(&f); |
1436 | return (0); |
1437 | } |
1438 | |
252c122d |
1439 | /* --- @cmd_finger@ --- */ |
d03ab969 |
1440 | |
252c122d |
1441 | static void fingerprint(key *k, const key_filter *kf) |
d03ab969 |
1442 | { |
252c122d |
1443 | rmd160_ctx r; |
1444 | octet hash[RMD160_HASHSZ]; |
1445 | dstr d = DSTR_INIT; |
1446 | int i; |
d03ab969 |
1447 | |
052b36d0 |
1448 | if (!key_encode(&k->k, &d, kf)) |
252c122d |
1449 | return; |
1450 | rmd160_init(&r); |
052b36d0 |
1451 | rmd160_hash(&r, d.buf, d.len); |
252c122d |
1452 | rmd160_done(&r, hash); |
052b36d0 |
1453 | |
1454 | DRESET(&d); |
252c122d |
1455 | key_fulltag(k, &d); |
1456 | for (i = 0; i < sizeof(hash); i++) { |
1457 | if (i && i % 4 == 0) |
1458 | putchar('-'); |
1459 | printf("%02x", hash[i]); |
1460 | } |
1461 | printf(" %s\n", d.buf); |
1462 | dstr_destroy(&d); |
1463 | } |
d03ab969 |
1464 | |
252c122d |
1465 | static int cmd_finger(int argc, char *argv[]) |
1466 | { |
1467 | key_file f; |
1468 | int rc = 0; |
1469 | key_filter kf = { KF_NONSECRET, KF_NONSECRET }; |
d03ab969 |
1470 | |
1471 | for (;;) { |
1472 | static struct option opt[] = { |
252c122d |
1473 | { "filter", OPTF_ARGREQ, 0, 'f' }, |
1474 | { 0, 0, 0, 0 } |
d03ab969 |
1475 | }; |
ce70ec47 |
1476 | int i = mdwopt(argc, argv, "+f:", opt, 0, 0, 0); |
d03ab969 |
1477 | if (i < 0) |
1478 | break; |
d03ab969 |
1479 | switch (i) { |
252c122d |
1480 | case 'f': { |
1481 | char *p; |
1482 | int err = key_readflags(optarg, &p, &kf.f, &kf.m); |
1483 | if (err || *p) |
1484 | die(EXIT_FAILURE, "bad filter string `%s'", optarg); |
1485 | } break; |
d03ab969 |
1486 | default: |
252c122d |
1487 | rc = 1; |
d03ab969 |
1488 | break; |
1489 | } |
1490 | } |
1491 | |
252c122d |
1492 | argv += optind; argc -= optind; |
1493 | if (rc) |
1494 | die(EXIT_FAILURE, "Usage: fingerprint [-f filter] [tag...]"); |
d03ab969 |
1495 | |
1496 | doopen(&f, KOPEN_READ); |
d03ab969 |
1497 | |
252c122d |
1498 | if (argc) { |
1499 | int i; |
1500 | for (i = 0; i < argc; i++) { |
1501 | key *k = key_bytag(&f, argv[i]); |
1502 | if (k) |
1503 | fingerprint(k, &kf); |
1504 | else { |
1505 | rc = 1; |
1506 | moan("key `%s' not found", argv[i]); |
1507 | } |
1508 | } |
1509 | } else { |
1510 | key_iter i; |
1511 | key *k; |
1512 | for (key_mkiter(&i, &f); (k = key_next(&i)) != 0; ) |
1513 | fingerprint(k, &kf); |
1514 | } |
1515 | return (rc); |
1516 | } |
d03ab969 |
1517 | |
252c122d |
1518 | /* --- @cmd_comment@ --- */ |
d03ab969 |
1519 | |
252c122d |
1520 | static int cmd_comment(int argc, char *argv[]) |
1521 | { |
1522 | key_file f; |
1523 | key *k; |
1524 | int err; |
d03ab969 |
1525 | |
252c122d |
1526 | if (argc < 2 || argc > 3) |
1527 | die(EXIT_FAILURE, "Usage: comment tag [comment]"); |
1528 | doopen(&f, KOPEN_WRITE); |
1529 | if ((k = key_bytag(&f, argv[1])) == 0) |
1530 | die(EXIT_FAILURE, "key `%s' not found", argv[1]); |
1531 | if ((err = key_setcomment(&f, k, argv[2])) != 0) |
1532 | die(EXIT_FAILURE, "bad comment `%s': %s", argv[2], key_strerror(err)); |
1533 | doclose(&f); |
1534 | return (0); |
1535 | } |
d03ab969 |
1536 | |
252c122d |
1537 | /* --- @cmd_tag@ --- */ |
d03ab969 |
1538 | |
252c122d |
1539 | static int cmd_tag(int argc, char *argv[]) |
1540 | { |
1541 | key_file f; |
1542 | key *k; |
1543 | int err; |
ce70ec47 |
1544 | unsigned flags = 0; |
1545 | int rc = 0; |
d03ab969 |
1546 | |
ce70ec47 |
1547 | for (;;) { |
1548 | static struct option opt[] = { |
1549 | { "retag", 0, 0, 'r' }, |
1550 | { 0, 0, 0, 0 } |
1551 | }; |
1552 | int i = mdwopt(argc, argv, "+r", opt, 0, 0, 0); |
1553 | if (i < 0) |
1554 | break; |
1555 | switch (i) { |
1556 | case 'r': |
1557 | flags |= f_retag; |
1558 | break; |
1559 | default: |
1560 | rc = 1; |
1561 | break; |
1562 | } |
1563 | } |
1564 | |
1565 | argv += optind; argc -= optind; |
1566 | if (argc < 1 || argc > 2 || rc) |
1567 | die(EXIT_FAILURE, "Usage: tag [-r] tag [new-tag]"); |
252c122d |
1568 | doopen(&f, KOPEN_WRITE); |
ce70ec47 |
1569 | if (flags & f_retag) { |
1570 | if ((k = key_bytag(&f, argv[1])) != 0 && strcmp(k->tag, argv[1]) == 0) |
1571 | key_settag(&f, k, 0); |
1572 | } |
1573 | if ((k = key_bytag(&f, argv[0])) == 0) |
1574 | die(EXIT_FAILURE, "key `%s' not found", argv[0]); |
1575 | if ((err = key_settag(&f, k, argv[1])) != 0) |
1576 | die(EXIT_FAILURE, "bad tag `%s': %s", argv[1], key_strerror(err)); |
252c122d |
1577 | doclose(&f); |
1578 | return (0); |
1579 | } |
d03ab969 |
1580 | |
252c122d |
1581 | /* --- @cmd_lock@ --- */ |
d03ab969 |
1582 | |
252c122d |
1583 | static int cmd_lock(int argc, char *argv[]) |
1584 | { |
1585 | key_file f; |
1586 | key *k; |
1587 | key_data *kd; |
1588 | dstr d = DSTR_INIT; |
d03ab969 |
1589 | |
252c122d |
1590 | if (argc != 2) |
1591 | die(EXIT_FAILURE, "Usage: lock qtag"); |
1592 | doopen(&f, KOPEN_WRITE); |
1593 | if (key_qtag(&f, argv[1], &d, &k, &kd)) |
1594 | die(EXIT_FAILURE, "key `%s' not found", argv[1]); |
1595 | if (kd->e == KENC_ENCRYPT && key_punlock(d.buf, kd, kd)) |
1596 | die(EXIT_FAILURE, "couldn't unlock key `%s'", d.buf); |
1597 | if (key_plock(d.buf, kd, kd)) |
1598 | die(EXIT_FAILURE, "failed to lock key `%s'", d.buf); |
1599 | f.f |= KF_MODIFIED; |
1600 | doclose(&f); |
1601 | return (0); |
1602 | } |
d03ab969 |
1603 | |
252c122d |
1604 | /* --- @cmd_unlock@ --- */ |
d03ab969 |
1605 | |
252c122d |
1606 | static int cmd_unlock(int argc, char *argv[]) |
1607 | { |
1608 | key_file f; |
1609 | key *k; |
1610 | key_data *kd; |
1611 | dstr d = DSTR_INIT; |
d03ab969 |
1612 | |
252c122d |
1613 | if (argc != 2) |
1614 | die(EXIT_FAILURE, "Usage: unlock qtag"); |
1615 | doopen(&f, KOPEN_WRITE); |
1616 | if (key_qtag(&f, argv[1], &d, &k, &kd)) |
1617 | die(EXIT_FAILURE, "key `%s' not found", argv[1]); |
1618 | if (kd->e != KENC_ENCRYPT) |
1619 | die(EXIT_FAILURE, "key `%s' is not encrypted", d.buf); |
1620 | if (kd->e == KENC_ENCRYPT && key_punlock(d.buf, kd, kd)) |
1621 | die(EXIT_FAILURE, "couldn't unlock key `%s'", d.buf); |
1622 | f.f |= KF_MODIFIED; |
d03ab969 |
1623 | doclose(&f); |
1624 | return (0); |
1625 | } |
1626 | |
1627 | /* --- @cmd_extract@ --- */ |
1628 | |
1629 | static int cmd_extract(int argc, char *argv[]) |
1630 | { |
1631 | key_file f; |
1632 | key *k; |
d03ab969 |
1633 | int i; |
1634 | int rc = 0; |
252c122d |
1635 | key_filter kf = { 0, 0 }; |
d03ab969 |
1636 | FILE *fp; |
1637 | |
252c122d |
1638 | for (;;) { |
1639 | static struct option opt[] = { |
1640 | { "filter", OPTF_ARGREQ, 0, 'f' }, |
1641 | { 0, 0, 0, 0 } |
1642 | }; |
1643 | int i = mdwopt(argc, argv, "f:", opt, 0, 0, 0); |
1644 | if (i < 0) |
1645 | break; |
1646 | switch (i) { |
1647 | case 'f': { |
1648 | char *p; |
1649 | int err = key_readflags(optarg, &p, &kf.f, &kf.m); |
1650 | if (err || *p) |
1651 | die(EXIT_FAILURE, "bad filter string `%s'", optarg); |
1652 | } break; |
1653 | default: |
1654 | rc = 1; |
1655 | break; |
1656 | } |
1657 | } |
1658 | |
1659 | argv += optind; argc -= optind; |
1660 | if (rc || argc < 1) |
1661 | die(EXIT_FAILURE, "Usage: extract [-f filter] file [tag...]"); |
1662 | if (strcmp(*argv, "-") == 0) |
d03ab969 |
1663 | fp = stdout; |
252c122d |
1664 | else if (!(fp = fopen(*argv, "w"))) { |
d03ab969 |
1665 | die(EXIT_FAILURE, "couldn't open `%s' for writing: %s", |
252c122d |
1666 | *argv, strerror(errno)); |
d03ab969 |
1667 | } |
1668 | |
252c122d |
1669 | doopen(&f, KOPEN_READ); |
1670 | if (argc < 2) { |
1671 | key_iter i; |
1672 | key *k; |
1673 | for (key_mkiter(&i, &f); (k = key_next(&i)) != 0; ) |
1674 | key_extract(&f, k, fp, &kf); |
1675 | } else { |
1676 | for (i = 1; i < argc; i++) { |
1677 | if ((k = key_bytag(&f, argv[i])) != 0) |
1678 | key_extract(&f, k, fp, &kf); |
1679 | else { |
1680 | moan("key `%s' not found", argv[i]); |
1681 | rc = 1; |
1682 | } |
d03ab969 |
1683 | } |
1684 | } |
252c122d |
1685 | if (fclose(fp)) |
1686 | die(EXIT_FAILURE, "error writing file: %s", strerror(errno)); |
d03ab969 |
1687 | doclose(&f); |
1688 | return (rc); |
1689 | } |
1690 | |
1691 | /* --- @cmd_tidy@ --- */ |
1692 | |
1693 | static int cmd_tidy(int argc, char *argv[]) |
1694 | { |
1695 | key_file f; |
1696 | if (argc != 1) |
1697 | die(EXIT_FAILURE, "usage: tidy"); |
1698 | doopen(&f, KOPEN_WRITE); |
1699 | f.f |= KF_MODIFIED; /* Nasty hack */ |
1700 | doclose(&f); |
1701 | return (0); |
1702 | } |
1703 | |
1704 | /* --- @cmd_merge@ --- */ |
1705 | |
1706 | static int cmd_merge(int argc, char *argv[]) |
1707 | { |
1708 | key_file f; |
1709 | FILE *fp; |
1710 | |
1711 | if (argc != 2) |
252c122d |
1712 | die(EXIT_FAILURE, "Usage: merge file"); |
d03ab969 |
1713 | if (strcmp(argv[1], "-") == 0) |
1714 | fp = stdin; |
1715 | else if (!(fp = fopen(argv[1], "r"))) { |
1716 | die(EXIT_FAILURE, "couldn't open `%s' for writing: %s", |
1717 | argv[1], strerror(errno)); |
1718 | } |
1719 | |
1720 | doopen(&f, KOPEN_WRITE); |
252c122d |
1721 | key_merge(&f, argv[1], fp, key_moan, 0); |
d03ab969 |
1722 | doclose(&f); |
1723 | return (0); |
1724 | } |
1725 | |
1726 | /*----- Main command table ------------------------------------------------*/ |
1727 | |
1728 | static struct cmd { |
1729 | const char *name; |
1730 | int (*cmd)(int /*argc*/, char */*argv*/[]); |
ce70ec47 |
1731 | const char *usage; |
d03ab969 |
1732 | const char *help; |
1733 | } cmds[] = { |
1734 | { "add", cmd_add, |
252c122d |
1735 | "add [options] type [attr...]\n\ |
ce70ec47 |
1736 | Options: [-lqrLS] [-a alg] [-bB bits] [-p param] [-R tag]\n\ |
1737 | [-e expire] [-t tag] [-c comment]", "\ |
1738 | Options:\n\ |
1739 | \n\ |
1740 | -a, --algorithm=ALG Generate keys suitable for ALG.\n\ |
1741 | -b, --bits=N Generate an N-bit key.\n\ |
1742 | -B, --qbits=N Use an N-bit subgroup or factors.\n\ |
1743 | -p, --parameters=TAG Get group parameters from TAG.\n\ |
1ba83484 |
1744 | -C, --curve=CURVE Use elliptic curve CURVE.\n\ |
ce70ec47 |
1745 | -e, --expire=TIME Make the key expire after TIME.\n\ |
1746 | -c, --comment=STRING Attach the command STRING to the key.\n\ |
1747 | -t, --tag=TAG Tag the key with the name TAG.\n\ |
1748 | -r, --retag Untag any key currently with that tag.\n\ |
1749 | -R, --rand-id=TAG Use key named TAG for the random number generator.\n\ |
1750 | -l, --lock Lock the generated key with a passphrase.\n\ |
1751 | -q, --quiet Don't give progress indicators while working.\n\ |
1752 | -L, --lim-lee Generate Lim-Lee primes for Diffie-Hellman groups.\n\ |
1753 | -S, --subgroup Use a prime-order subgroup for Diffie-Hellman.\n\ |
1754 | " }, |
252c122d |
1755 | { "expire", cmd_expire, "expire tag..." }, |
1756 | { "delete", cmd_delete, "delete tag..." }, |
ce70ec47 |
1757 | { "tag", cmd_tag, "tag [-r] tag [new-tag]", "\ |
1758 | Options:\n\ |
1759 | \n\ |
1760 | -r, --retag Untag any key currently called new-tag.\n\ |
1761 | " }, |
252c122d |
1762 | { "setattr", cmd_setattr, "setattr tag attr..." }, |
1763 | { "comment", cmd_comment, "comment tag [comment]" }, |
1764 | { "lock", cmd_lock, "lock qtag" }, |
1765 | { "unlock", cmd_unlock, "unlock qtag" }, |
ce70ec47 |
1766 | { "list", cmd_list, "list [-uqv] [-f filter] [tag...]", "\ |
1767 | Options:\n\ |
1768 | \n\ |
1769 | -u, --utc Display expiry times etc. in UTC, not local time.\n\ |
1770 | -q, --quiet Show less information.\n\ |
1771 | -v, --verbose Show more information.\n\ |
1772 | " }, |
1773 | { "fingerprint", cmd_finger, "fingerprint [-f filter] [tag...]", "\ |
1774 | Options:\n\ |
1775 | \n\ |
1776 | -f, --filter=FILT Only hash key components matching FILT.\n\ |
1777 | " }, |
d03ab969 |
1778 | { "tidy", cmd_tidy, "tidy" }, |
ce70ec47 |
1779 | { "extract", cmd_extract, "extract [-f filter] file [tag...]", "\ |
1780 | Options:\n\ |
1781 | \n\ |
1782 | -f, --filter=FILT Only extract key components matching FILT.\n\ |
1783 | " }, |
252c122d |
1784 | { "merge", cmd_merge, "merge file" }, |
d03ab969 |
1785 | { 0, 0, 0 } |
1786 | }; |
1787 | |
1788 | typedef struct cmd cmd; |
1789 | |
1790 | /*----- Main code ---------------------------------------------------------*/ |
1791 | |
ce70ec47 |
1792 | /* --- @findcmd@ --- * |
1793 | * |
1794 | * Arguments: @const char *name@ = a command name |
1795 | * |
1796 | * Returns: Pointer to the command structure. |
1797 | * |
1798 | * Use: Looks up a command by name. If the command isn't found, an |
1799 | * error is reported and the program is terminated. |
1800 | */ |
1801 | |
1802 | static cmd *findcmd(const char *name) |
1803 | { |
1804 | cmd *c, *chosen = 0; |
1805 | size_t sz = strlen(name); |
1806 | |
1807 | for (c = cmds; c->name; c++) { |
1808 | if (strncmp(name, c->name, sz) == 0) { |
1809 | if (c->name[sz] == 0) { |
1810 | chosen = c; |
1811 | break; |
1812 | } else if (chosen) |
1813 | die(EXIT_FAILURE, "ambiguous command name `%s'", name); |
1814 | else |
1815 | chosen = c; |
1816 | } |
1817 | } |
1818 | if (!chosen) |
1819 | die(EXIT_FAILURE, "unknown command name `%s'", name); |
1820 | return (chosen); |
1821 | } |
1822 | |
d03ab969 |
1823 | /* --- Helpful GNUy functions --- */ |
1824 | |
1825 | void usage(FILE *fp) |
1826 | { |
99dde2f4 |
1827 | pquis(fp, "Usage: $ [-k keyring] command [args]\n"); |
d03ab969 |
1828 | } |
1829 | |
1830 | void version(FILE *fp) |
1831 | { |
052b36d0 |
1832 | pquis(fp, "$, Catacomb version " VERSION "\n"); |
d03ab969 |
1833 | } |
1834 | |
ce70ec47 |
1835 | void help(FILE *fp, char **argv) |
d03ab969 |
1836 | { |
1837 | cmd *c; |
ce70ec47 |
1838 | |
d03ab969 |
1839 | version(fp); |
1840 | fputc('\n', fp); |
ce70ec47 |
1841 | if (*argv) { |
1842 | c = findcmd(*argv); |
99dde2f4 |
1843 | fprintf(fp, "Usage: %s [-k keyring] %s\n", QUIS, c->usage); |
ce70ec47 |
1844 | if (c->help) { |
1845 | fputc('\n', fp); |
1846 | fputs(c->help, fp); |
1847 | } |
1848 | } else { |
ce70ec47 |
1849 | usage(fp); |
1850 | fputs("\n\ |
d03ab969 |
1851 | Performs various simple key management operations. Command line options\n\ |
1852 | recognized are:\n\ |
1853 | \n\ |
ce70ec47 |
1854 | -h, --help [COMMAND] Display this help text (or help for COMMAND).\n\ |
d03ab969 |
1855 | -v, --version Display version number.\n\ |
1856 | -u, --usage Display short usage summary.\n\ |
1857 | \n\ |
1858 | -k, --keyring=FILE Read and write keys in FILE.\n\ |
052b36d0 |
1859 | -i, --id=TAG Use key TAG for random number generator.\n\ |
1860 | -t, --type=TYPE Use key TYPE for random number generator.\n\ |
d03ab969 |
1861 | \n\ |
1862 | The following commands are understood:\n\n", |
ce70ec47 |
1863 | fp); |
1864 | for (c = cmds; c->name; c++) |
1865 | fprintf(fp, "%s\n", c->usage); |
1866 | } |
d03ab969 |
1867 | } |
1868 | |
1869 | /* --- @main@ --- * |
1870 | * |
1871 | * Arguments: @int argc@ = number of command line arguments |
1872 | * @char *argv[]@ = array of command line arguments |
1873 | * |
1874 | * Returns: Nonzero on failure. |
1875 | * |
1876 | * Use: Main program. Performs simple key management functions. |
1877 | */ |
1878 | |
1879 | int main(int argc, char *argv[]) |
1880 | { |
1881 | unsigned f = 0; |
1882 | |
16efd15b |
1883 | #define f_bogus 1u |
d03ab969 |
1884 | |
1885 | /* --- Initialization --- */ |
1886 | |
1887 | ego(argv[0]); |
1888 | sub_init(); |
1889 | |
1890 | /* --- Parse command line options --- */ |
1891 | |
1892 | for (;;) { |
1893 | static struct option opt[] = { |
1894 | |
1895 | /* --- Standard GNUy help options --- */ |
1896 | |
1897 | { "help", 0, 0, 'h' }, |
1898 | { "version", 0, 0, 'v' }, |
1899 | { "usage", 0, 0, 'u' }, |
1900 | |
1901 | /* --- Real live useful options --- */ |
1902 | |
1903 | { "keyring", OPTF_ARGREQ, 0, 'k' }, |
1904 | |
1905 | /* --- Magic terminator --- */ |
1906 | |
1907 | { 0, 0, 0, 0 } |
1908 | }; |
99dde2f4 |
1909 | int i = mdwopt(argc, argv, "+hvu k:", opt, 0, 0, 0); |
d03ab969 |
1910 | |
1911 | if (i < 0) |
1912 | break; |
1913 | switch (i) { |
1914 | |
1915 | /* --- GNU help options --- */ |
ce70ec47 |
1916 | |
d03ab969 |
1917 | case 'h': |
ce70ec47 |
1918 | help(stdout, argv + optind); |
d03ab969 |
1919 | exit(0); |
1920 | case 'v': |
1921 | version(stdout); |
1922 | exit(0); |
1923 | case 'u': |
1924 | usage(stdout); |
1925 | exit(0); |
1926 | |
1927 | /* --- Real useful options --- */ |
1928 | |
1929 | case 'k': |
1930 | keyfile = optarg; |
1931 | break; |
1932 | |
1933 | /* --- Bogosity --- */ |
1934 | |
1935 | default: |
1936 | f |= f_bogus; |
1937 | break; |
1938 | } |
1939 | } |
1940 | |
1941 | /* --- Complain about excessive bogons --- */ |
1942 | |
1943 | if (f & f_bogus || optind == argc) { |
1944 | usage(stderr); |
1945 | exit(1); |
1946 | } |
1947 | |
052b36d0 |
1948 | /* --- Initialize the Catacomb random number generator --- */ |
1949 | |
052b36d0 |
1950 | rand_noisesrc(RAND_GLOBAL, &noise_source); |
9219a5d6 |
1951 | rand_seed(RAND_GLOBAL, 160); |
052b36d0 |
1952 | |
d03ab969 |
1953 | /* --- Dispatch to appropriate command handler --- */ |
1954 | |
1955 | argc -= optind; |
1956 | argv += optind; |
1957 | optind = 0; |
ce70ec47 |
1958 | return (findcmd(argv[0])->cmd(argc, argv)); |
d03ab969 |
1959 | } |
1960 | |
1961 | /*----- That's all, folks -------------------------------------------------*/ |