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