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