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