d03ab969 |
1 | /* -*-c-*- |
2 | * |
4739c68a |
3 | * $Id: keyutil.c,v 1.25 2004/04/21 00:38:22 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 | |
d03ab969 |
30 | /*----- Header files ------------------------------------------------------*/ |
31 | |
32 | #include "config.h" |
33 | |
34 | #include <errno.h> |
35 | #include <stdio.h> |
36 | #include <stdlib.h> |
37 | #include <string.h> |
38 | #include <time.h> |
39 | |
252c122d |
40 | #include <mLib/base64.h> |
d03ab969 |
41 | #include <mLib/mdwopt.h> |
42 | #include <mLib/quis.h> |
43 | #include <mLib/report.h> |
44 | #include <mLib/sub.h> |
45 | |
46 | #include <noise.h> |
47 | #include <rand.h> |
48 | |
252c122d |
49 | #include "bbs.h" |
052b36d0 |
50 | #include "dh.h" |
252c122d |
51 | #include "dsa.h" |
34e4f738 |
52 | #include "dsarand.h" |
1ba83484 |
53 | #include "ec.h" |
54 | #include "ec-keys.h" |
55 | #include "ectab.h" |
252c122d |
56 | #include "fibrand.h" |
d03ab969 |
57 | #include "getdate.h" |
58 | #include "key.h" |
252c122d |
59 | #include "mp.h" |
60 | #include "mpmont.h" |
61 | #include "mprand.h" |
62 | #include "mptext.h" |
63 | #include "pgen.h" |
3563e365 |
64 | #include "ptab.h" |
252c122d |
65 | #include "rsa.h" |
d03ab969 |
66 | |
34e4f738 |
67 | #include "sha-mgf.h" |
68 | #include "sha256-mgf.h" |
69 | #include "sha224-mgf.h" |
70 | #include "sha384-mgf.h" |
71 | #include "sha512-mgf.h" |
72 | #include "tiger-mgf.h" |
73 | #include "rmd128-mgf.h" |
74 | #include "rmd160-mgf.h" |
75 | #include "rmd256-mgf.h" |
76 | #include "rmd320-mgf.h" |
77 | #include "md5-mgf.h" |
78 | #include "dsarand.h" |
79 | |
d03ab969 |
80 | /*----- Handy global state ------------------------------------------------*/ |
81 | |
82 | static const char *keyfile = "keyring"; |
83 | |
84 | /*----- Useful shared functions -------------------------------------------*/ |
85 | |
86 | /* --- @doopen@ --- * |
87 | * |
88 | * Arguments: @key_file *f@ = pointer to key file block |
89 | * @unsigned how@ = method to open file with |
90 | * |
91 | * Returns: --- |
92 | * |
93 | * Use: Opens a key file and handles errors by panicking |
94 | * appropriately. |
95 | */ |
96 | |
97 | static void doopen(key_file *f, unsigned how) |
98 | { |
252c122d |
99 | if (key_open(f, keyfile, how, key_moan, 0)) |
052b36d0 |
100 | die(1, "couldn't open keyring `%s': %s", keyfile, strerror(errno)); |
d03ab969 |
101 | } |
102 | |
103 | /* --- @doclose@ --- * |
104 | * |
105 | * Arguments: @key_file *f@ = pointer to key file block |
106 | * |
107 | * Returns: --- |
108 | * |
109 | * Use: Closes a key file and handles errors by panicking |
110 | * appropriately. |
111 | */ |
112 | |
113 | static void doclose(key_file *f) |
114 | { |
115 | switch (key_close(f)) { |
116 | case KWRITE_FAIL: |
117 | die(EXIT_FAILURE, "couldn't write file `%s': %s", |
118 | keyfile, strerror(errno)); |
119 | case KWRITE_BROKEN: |
120 | die(EXIT_FAILURE, "keyring file `%s' broken: %s (repair manually)", |
121 | keyfile, strerror(errno)); |
122 | } |
123 | } |
124 | |
125 | /* --- @setattr@ --- * |
126 | * |
127 | * Arguments: @key_file *f@ = pointer to key file block |
128 | * @key *k@ = pointer to key block |
129 | * @char *v[]@ = array of assignments (overwritten!) |
130 | * |
131 | * Returns: --- |
132 | * |
133 | * Use: Applies the attribute assignments to the key. |
134 | */ |
135 | |
136 | static void setattr(key_file *f, key *k, char *v[]) |
137 | { |
138 | while (*v) { |
252c122d |
139 | int err; |
d03ab969 |
140 | char *p = *v; |
141 | size_t eq = strcspn(p, "="); |
72f13799 |
142 | if (!p[eq]) { |
143 | moan("invalid assignment: `%s' (ignored)", p); |
144 | v++; |
145 | continue; |
146 | } |
d03ab969 |
147 | p[eq] = 0; |
148 | p += eq + 1; |
252c122d |
149 | if ((err = key_putattr(f, k, *v, *p ? p : 0)) != 0) |
150 | die(EXIT_FAILURE, "couldn't set attributes: %s", key_strerror(err)); |
d03ab969 |
151 | v++; |
152 | } |
153 | } |
154 | |
34e4f738 |
155 | /*----- Seeding -----------------------------------------------------------*/ |
156 | |
157 | const struct seedalg { const char *p; grand *(*gen)(const void *, size_t); } |
158 | seedtab[] = { |
159 | { "dsarand", dsarand_create }, |
160 | { "rmd128-mgf", rmd128_mgfrand }, |
161 | { "rmd160-mgf", rmd160_mgfrand }, |
162 | { "rmd256-mgf", rmd256_mgfrand }, |
163 | { "rmd320-mgf", rmd320_mgfrand }, |
164 | { "sha-mgf", sha_mgfrand }, |
165 | { "sha224-mgf", sha224_mgfrand }, |
166 | { "sha256-mgf", sha256_mgfrand }, |
167 | { "sha384-mgf", sha384_mgfrand }, |
168 | { "sha512-mgf", sha512_mgfrand }, |
169 | { "tiger-mgf", tiger_mgfrand }, |
170 | { 0, 0 } |
171 | }; |
172 | |
173 | #define SEEDALG_DEFAULT (seedtab + 2) |
174 | |
252c122d |
175 | /*----- Key generation ----------------------------------------------------*/ |
176 | |
177 | /* --- Key generation parameters --- */ |
178 | |
179 | typedef struct keyopts { |
180 | key_file *kf; /* Pointer to key file */ |
181 | key *k; /* Pointer to the actual key */ |
182 | dstr tag; /* Full tag name for the key */ |
183 | unsigned f; /* Flags for the new key */ |
184 | unsigned bits, qbits; /* Bit length for the new key */ |
1ba83484 |
185 | const char *curve; /* Elliptic curve name/info */ |
34e4f738 |
186 | grand *r; /* Random number source */ |
252c122d |
187 | key *p; /* Parameters key-data */ |
188 | } keyopts; |
189 | |
16efd15b |
190 | #define f_bogus 1u /* Error in parsing */ |
191 | #define f_lock 2u /* Passphrase-lock private key */ |
192 | #define f_quiet 4u /* Don't show a progress indicator */ |
193 | #define f_limlee 8u /* Generate Lim-Lee primes */ |
194 | #define f_subgroup 16u /* Generate a subgroup */ |
ce70ec47 |
195 | #define f_retag 32u /* Remove any existing tag */ |
252c122d |
196 | |
197 | /* --- @dolock@ --- * |
198 | * |
199 | * Arguments: @keyopts *k@ = key generation options |
200 | * @key_data *kd@ = pointer to key data to lock |
201 | * @const char *t@ = tag suffix or null |
202 | * |
203 | * Returns: --- |
204 | * |
205 | * Use: Does passphrase locking on new keys. |
206 | */ |
207 | |
208 | static void dolock(keyopts *k, key_data *kd, const char *t) |
209 | { |
210 | if (!(k->f & f_lock)) |
211 | return; |
212 | if (t) |
213 | dstr_putf(&k->tag, ".%s", t); |
214 | if (key_plock(k->tag.buf, kd, kd)) |
215 | die(EXIT_FAILURE, "couldn't lock key"); |
216 | } |
217 | |
218 | /* --- @mpkey@ --- * |
219 | * |
220 | * Arguments: @key_data *kd@ = pointer to parent key block |
221 | * @const char *tag@ = pointer to tag string |
222 | * @mp *m@ = integer to store |
223 | * @unsigned f@ = flags to set |
224 | * |
225 | * Returns: --- |
226 | * |
227 | * Use: Sets a multiprecision integer subkey. |
228 | */ |
229 | |
230 | static void mpkey(key_data *kd, const char *tag, mp *m, unsigned f) |
231 | { |
232 | key_data *kkd = key_structcreate(kd, tag); |
233 | key_mp(kkd, m); |
234 | kkd->e |= f; |
235 | } |
236 | |
237 | /* --- @copyparam@ --- * |
238 | * |
239 | * Arguments: @keyopts *k@ = pointer to key options |
240 | * @const char **pp@ = checklist of parameters |
241 | * |
242 | * Returns: Nonzero if parameters copied; zero if you have to generate |
243 | * them. |
244 | * |
245 | * Use: Copies parameters from a source key to the current one. |
246 | */ |
247 | |
248 | static int copyparam(keyopts *k, const char **pp) |
249 | { |
250 | key_filter kf; |
4739c68a |
251 | key_attriter i; |
252 | const char *n, *v; |
252c122d |
253 | |
254 | /* --- Quick check if no parameters supplied --- */ |
255 | |
256 | if (!k->p) |
257 | return (0); |
258 | |
259 | /* --- Run through the checklist --- */ |
260 | |
261 | while (*pp) { |
262 | key_data *kd = key_structfind(&k->p->k, *pp); |
263 | if (!kd) |
264 | die(EXIT_FAILURE, "bad parameter key: parameter `%s' not found", *pp); |
265 | if ((kd->e & KF_CATMASK) != KCAT_SHARE) |
266 | die(EXIT_FAILURE, "bad parameter key: subkey `%s' is not shared", *pp); |
267 | pp++; |
268 | } |
269 | |
270 | /* --- Copy over the parameters --- */ |
271 | |
272 | kf.f = KCAT_SHARE; |
273 | kf.m = KF_CATMASK; |
274 | if (!key_copy(&k->k->k, &k->p->k, &kf)) |
275 | die(EXIT_FAILURE, "unexpected failure while copying parameters"); |
4739c68a |
276 | |
277 | /* --- Copy over attributes --- */ |
278 | |
279 | for (key_mkattriter(&i, k->p); key_nextattr(&i, &n, &v); ) |
280 | key_putattr(k->kf, k->k, n, v); |
281 | |
282 | /* --- Done --- */ |
283 | |
252c122d |
284 | return (1); |
285 | } |
286 | |
287 | /* --- @getmp@ --- * |
288 | * |
289 | * Arguments: @key_data *k@ = pointer to key data block |
290 | * @const char *tag@ = tag string to use |
291 | * |
292 | * Returns: Pointer to multiprecision integer key item. |
293 | * |
294 | * Use: Fetches an MP key component. |
295 | */ |
296 | |
297 | static mp *getmp(key_data *k, const char *tag) |
298 | { |
299 | k = key_structfind(k, tag); |
300 | if (!k) |
301 | die(EXIT_FAILURE, "unexpected failure looking up subkey `%s'", tag); |
302 | if ((k->e & KF_ENCMASK) != KENC_MP) |
303 | die(EXIT_FAILURE, "subkey `%s' has an incompatible type"); |
304 | return (k->u.m); |
305 | } |
306 | |
052b36d0 |
307 | /* --- @keyrand@ --- * |
308 | * |
309 | * Arguments: @key_file *kf@ = pointer to key file |
310 | * @const char *id@ = pointer to key id (or null) |
311 | * |
312 | * Returns: --- |
313 | * |
314 | * Use: Keys the random number generator. |
315 | */ |
316 | |
317 | static void keyrand(key_file *kf, const char *id) |
318 | { |
319 | key *k; |
320 | |
321 | /* --- Find the key --- */ |
322 | |
323 | if (id) { |
324 | if ((k = key_bytag(kf, id)) == 0) |
325 | die(EXIT_FAILURE, "key `%s' not found", id); |
326 | } else |
327 | k = key_bytype(kf, "catacomb-rand"); |
328 | |
329 | if (k) { |
330 | key_data *kd = &k->k, kkd; |
331 | |
332 | again: |
333 | switch (kd->e & KF_ENCMASK) { |
334 | case KENC_BINARY: |
335 | break; |
336 | case KENC_ENCRYPT: { |
337 | dstr d = DSTR_INIT; |
338 | key_fulltag(k, &d); |
339 | if (key_punlock(d.buf, kd, &kkd)) |
340 | die(EXIT_FAILURE, "error unlocking key `%s'", d.buf); |
341 | dstr_destroy(&d); |
342 | kd = &kkd; |
343 | } goto again; |
344 | default: { |
345 | dstr d = DSTR_INIT; |
346 | key_fulltag(k, &d); |
347 | die(EXIT_FAILURE, "bad encoding type for key `%s'", d.buf); |
348 | } break; |
349 | } |
350 | |
351 | /* --- Key the generator --- */ |
352 | |
353 | rand_key(RAND_GLOBAL, kd->u.k.k, kd->u.k.sz); |
354 | if (kd == &kkd) |
355 | key_destroy(&kkd); |
356 | } |
357 | } |
358 | |
252c122d |
359 | /* --- Key generation algorithms --- */ |
360 | |
361 | static void alg_binary(keyopts *k) |
362 | { |
363 | unsigned sz; |
364 | unsigned m; |
365 | octet *p; |
366 | |
367 | if (!k->bits) |
368 | k->bits = 128; |
369 | if (k->p) |
370 | die(EXIT_FAILURE, "no shared parameters for binary keys"); |
371 | |
372 | sz = (k->bits + 7) >> 3; |
373 | p = sub_alloc(sz); |
374 | m = (1 << (((k->bits - 1) & 7) + 1)) - 1; |
34e4f738 |
375 | k->r->ops->fill(k->r, p, sz); |
252c122d |
376 | *p &= m; |
377 | key_binary(&k->k->k, p, sz); |
378 | k->k->k.e |= KCAT_SYMM | KF_BURN; |
379 | memset(p, 0, sz); |
380 | sub_free(p, sz); |
381 | dolock(k, &k->k->k, 0); |
382 | } |
383 | |
384 | static void alg_des(keyopts *k) |
385 | { |
386 | unsigned sz; |
387 | octet *p; |
388 | int i; |
389 | |
390 | if (!k->bits) |
1ba83484 |
391 | k->bits = 168; |
252c122d |
392 | if (k->p) |
393 | die(EXIT_FAILURE, "no shared parameters for DES keys"); |
394 | if (k->bits % 56 || k->bits > 168) |
395 | die(EXIT_FAILURE, "DES keys must be 56, 112 or 168 bits long"); |
396 | |
397 | sz = k->bits / 7; |
398 | p = sub_alloc(sz); |
34e4f738 |
399 | k->r->ops->fill(k->r, p, sz); |
252c122d |
400 | for (i = 0; i < sz; i++) { |
052b36d0 |
401 | octet x = p[i] | 0x01; |
252c122d |
402 | x = x ^ (x >> 4); |
403 | x = x ^ (x >> 2); |
052b36d0 |
404 | x = x ^ (x >> 1); |
252c122d |
405 | p[i] = (p[i] & 0xfe) | (x & 0x01); |
406 | } |
407 | key_binary(&k->k->k, p, sz); |
408 | k->k->k.e |= KCAT_SYMM | KF_BURN; |
409 | memset(p, 0, sz); |
410 | sub_free(p, sz); |
411 | dolock(k, &k->k->k, 0); |
412 | } |
413 | |
414 | static void alg_rsa(keyopts *k) |
415 | { |
ab0ca95f |
416 | rsa_priv rp; |
252c122d |
417 | key_data *kd; |
418 | |
419 | /* --- Sanity checking --- */ |
420 | |
421 | if (k->p) |
422 | die(EXIT_FAILURE, "no shared parameters for RSA keys"); |
423 | if (!k->bits) |
424 | k->bits = 1024; |
425 | |
426 | /* --- Generate the RSA parameters --- */ |
427 | |
34e4f738 |
428 | if (rsa_gen(&rp, k->bits, k->r, 0, |
252c122d |
429 | (k->f & f_quiet) ? 0 : pgen_ev, 0)) |
430 | die(EXIT_FAILURE, "RSA key generation failed"); |
431 | |
432 | /* --- Run a test encryption --- */ |
433 | |
434 | { |
34e4f738 |
435 | grand *g = fibrand_create(k->r->ops->word(k->r)); |
ab0ca95f |
436 | rsa_pub rpp; |
252c122d |
437 | mp *m = mprand_range(MP_NEW, rp.n, g, 0); |
438 | mp *c; |
439 | |
ab0ca95f |
440 | rpp.n = rp.n; |
441 | rpp.e = rp.e; |
442 | c = rsa_qpubop(&rpp, MP_NEW, m); |
443 | c = rsa_qprivop(&rp, c, c, g); |
252c122d |
444 | |
4b536f42 |
445 | if (!MP_EQ(c, m)) |
252c122d |
446 | die(EXIT_FAILURE, "test encryption failed"); |
447 | mp_drop(c); |
448 | mp_drop(m); |
449 | g->ops->destroy(g); |
450 | } |
451 | |
452 | /* --- Allrighty then --- */ |
453 | |
454 | kd = &k->k->k; |
455 | key_structure(kd); |
456 | mpkey(kd, "n", rp.n, KCAT_PUB); |
457 | mpkey(kd, "e", rp.e, KCAT_PUB); |
458 | |
459 | kd = key_structcreate(kd, "private"); |
460 | key_structure(kd); |
461 | mpkey(kd, "d", rp.d, KCAT_PRIV | KF_BURN); |
462 | mpkey(kd, "p", rp.p, KCAT_PRIV | KF_BURN); |
463 | mpkey(kd, "q", rp.q, KCAT_PRIV | KF_BURN); |
464 | mpkey(kd, "q-inv", rp.q_inv, KCAT_PRIV | KF_BURN); |
465 | mpkey(kd, "d-mod-p", rp.dp, KCAT_PRIV | KF_BURN); |
466 | mpkey(kd, "d-mod-q", rp.dq, KCAT_PRIV | KF_BURN); |
467 | dolock(k, kd, "private"); |
468 | |
ab0ca95f |
469 | rsa_privfree(&rp); |
252c122d |
470 | } |
471 | |
472 | static void alg_dsaparam(keyopts *k) |
473 | { |
474 | static const char *pl[] = { "q", "p", "g", 0 }; |
475 | if (!copyparam(k, pl)) { |
476 | dsa_param dp; |
477 | octet *p; |
478 | size_t sz; |
479 | dstr d = DSTR_INIT; |
480 | base64_ctx c; |
481 | key_data *kd = &k->k->k; |
f4f8e305 |
482 | dsa_seed ds; |
252c122d |
483 | |
484 | /* --- Choose appropriate bit lengths if necessary --- */ |
485 | |
486 | if (!k->qbits) |
487 | k->qbits = 160; |
488 | if (!k->bits) |
489 | k->bits = 768; |
490 | |
491 | /* --- Allocate a seed block --- */ |
492 | |
493 | sz = (k->qbits + 7) >> 3; |
494 | p = sub_alloc(sz); |
34e4f738 |
495 | k->r->ops->fill(k->r, p, sz); |
252c122d |
496 | |
497 | /* --- Allocate the parameters --- */ |
498 | |
f4f8e305 |
499 | if (dsa_gen(&dp, k->qbits, k->bits, 0, p, sz, &ds, |
40d5a112 |
500 | (k->f & f_quiet) ? 0 : pgen_ev, 0)) |
252c122d |
501 | die(EXIT_FAILURE, "DSA parameter generation failed"); |
502 | |
503 | /* --- Store the parameters --- */ |
504 | |
505 | key_structure(kd); |
506 | mpkey(kd, "q", dp.q, KCAT_SHARE); |
507 | mpkey(kd, "p", dp.p, KCAT_SHARE); |
508 | mpkey(kd, "g", dp.g, KCAT_SHARE); |
509 | mp_drop(dp.q); |
510 | mp_drop(dp.p); |
511 | mp_drop(dp.g); |
512 | |
513 | /* --- Store the seed for future verification --- */ |
514 | |
515 | base64_init(&c); |
516 | c.maxline = 0; |
517 | c.indent = ""; |
f4f8e305 |
518 | base64_encode(&c, ds.p, ds.sz, &d); |
252c122d |
519 | base64_encode(&c, 0, 0, &d); |
520 | key_putattr(k->kf, k->k, "seed", d.buf); |
f4f8e305 |
521 | DRESET(&d); |
522 | dstr_putf(&d, "%u", ds.count); |
523 | key_putattr(k->kf, k->k, "count", d.buf); |
524 | xfree(ds.p); |
252c122d |
525 | sub_free(p, sz); |
526 | dstr_destroy(&d); |
527 | } |
528 | } |
529 | |
530 | static void alg_dsa(keyopts *k) |
531 | { |
532 | mp *q, *p, *g; |
533 | mp *x, *y; |
534 | mpmont mm; |
535 | key_data *kd = &k->k->k; |
536 | |
537 | /* --- Get the shared parameters --- */ |
538 | |
539 | alg_dsaparam(k); |
540 | q = getmp(kd, "q"); |
541 | p = getmp(kd, "p"); |
542 | g = getmp(kd, "g"); |
543 | |
544 | /* --- Choose a private key --- */ |
545 | |
34e4f738 |
546 | x = mprand_range(MP_NEWSEC, q, k->r, 0); |
252c122d |
547 | mpmont_create(&mm, p); |
548 | y = mpmont_exp(&mm, MP_NEW, g, x); |
549 | |
550 | /* --- Store everything away --- */ |
551 | |
552 | mpkey(kd, "y", y, KCAT_PUB); |
553 | |
554 | kd = key_structcreate(kd, "private"); |
555 | key_structure(kd); |
556 | mpkey(kd, "x", x, KCAT_PRIV | KF_BURN); |
557 | dolock(k, kd, "private"); |
052b36d0 |
558 | |
559 | mp_drop(x); mp_drop(y); |
252c122d |
560 | } |
561 | |
562 | static void alg_dhparam(keyopts *k) |
563 | { |
052b36d0 |
564 | static const char *pl[] = { "p", "q", "g", 0 }; |
34e4f738 |
565 | key_data *kd = &k->k->k; |
252c122d |
566 | if (!copyparam(k, pl)) { |
052b36d0 |
567 | dh_param dp; |
40d5a112 |
568 | int rc; |
252c122d |
569 | |
3563e365 |
570 | if (k->curve) { |
571 | qd_parse qd; |
572 | |
573 | if (strcmp(k->curve, "list") == 0) { |
574 | const pentry *pe; |
575 | printf("Built-in prime groups:\n"); |
576 | for (pe = ptab; pe->name; pe++) |
577 | printf(" %s\n", pe->name); |
578 | exit(0); |
579 | } |
580 | qd.p = k->curve; |
581 | if (dh_parse(&qd, &dp)) |
582 | die(EXIT_FAILURE, "error in group spec: %s", qd.e); |
583 | goto done; |
584 | } |
585 | |
252c122d |
586 | if (!k->bits) |
587 | k->bits = 1024; |
588 | |
589 | /* --- Choose a large safe prime number --- */ |
590 | |
40d5a112 |
591 | if (k->f & f_limlee) { |
592 | mp **f; |
593 | size_t nf; |
594 | if (!k->qbits) |
595 | k->qbits = 256; |
596 | rc = dh_limlee(&dp, k->qbits, k->bits, |
597 | (k->f & f_subgroup) ? DH_SUBGROUP : 0, |
34e4f738 |
598 | 0, k->r, (k->f & f_quiet) ? 0 : pgen_ev, 0, |
40d5a112 |
599 | (k->f & f_quiet) ? 0 : pgen_evspin, 0, &nf, &f); |
600 | if (!rc) { |
601 | dstr d = DSTR_INIT; |
602 | size_t i; |
603 | for (i = 0; i < nf; i++) { |
604 | if (i) |
605 | dstr_puts(&d, ", "); |
606 | mp_writedstr(f[i], &d, 10); |
607 | mp_drop(f[i]); |
608 | } |
609 | key_putattr(k->kf, k->k, "factors", d.buf); |
610 | dstr_destroy(&d); |
611 | } |
612 | } else |
34e4f738 |
613 | rc = dh_gen(&dp, k->qbits, k->bits, 0, k->r, |
40d5a112 |
614 | (k->f & f_quiet) ? 0 : pgen_ev, 0); |
615 | |
616 | if (rc) |
252c122d |
617 | die(EXIT_FAILURE, "Diffie-Hellman parameter generation failed"); |
618 | |
3563e365 |
619 | done: |
252c122d |
620 | key_structure(kd); |
052b36d0 |
621 | mpkey(kd, "p", dp.p, KCAT_SHARE); |
622 | mpkey(kd, "q", dp.q, KCAT_SHARE); |
623 | mpkey(kd, "g", dp.g, KCAT_SHARE); |
624 | mp_drop(dp.q); |
625 | mp_drop(dp.p); |
626 | mp_drop(dp.g); |
34e4f738 |
627 | } |
252c122d |
628 | } |
629 | |
630 | static void alg_dh(keyopts *k) |
631 | { |
632 | mp *x, *y; |
052b36d0 |
633 | mp *p, *q, *g; |
252c122d |
634 | mpmont mm; |
635 | key_data *kd = &k->k->k; |
636 | |
637 | /* --- Get the shared parameters --- */ |
638 | |
639 | alg_dhparam(k); |
640 | p = getmp(kd, "p"); |
052b36d0 |
641 | q = getmp(kd, "q"); |
252c122d |
642 | g = getmp(kd, "g"); |
643 | |
644 | /* --- Choose a suitable private key --- * |
645 | * |
646 | * Since %$g$% has order %$q$%, choose %$x < q$%. |
647 | */ |
648 | |
34e4f738 |
649 | x = mprand_range(MP_NEWSEC, q, k->r, 0); |
252c122d |
650 | |
651 | /* --- Compute the public key %$y = g^x \bmod p$% --- */ |
652 | |
653 | mpmont_create(&mm, p); |
052b36d0 |
654 | y = mpmont_exp(&mm, MP_NEW, g, x); |
252c122d |
655 | mpmont_destroy(&mm); |
656 | |
657 | /* --- Store everything away --- */ |
658 | |
659 | mpkey(kd, "y", y, KCAT_PUB); |
660 | |
661 | kd = key_structcreate(kd, "private"); |
662 | key_structure(kd); |
663 | mpkey(kd, "x", x, KCAT_PRIV | KF_BURN); |
664 | dolock(k, kd, "private"); |
052b36d0 |
665 | |
666 | mp_drop(x); mp_drop(y); |
252c122d |
667 | } |
668 | |
669 | static void alg_bbs(keyopts *k) |
670 | { |
ab0ca95f |
671 | bbs_priv bp; |
252c122d |
672 | key_data *kd; |
252c122d |
673 | |
674 | /* --- Sanity checking --- */ |
675 | |
676 | if (k->p) |
677 | die(EXIT_FAILURE, "no shared parameters for Blum-Blum-Shub keys"); |
678 | if (!k->bits) |
679 | k->bits = 1024; |
680 | |
681 | /* --- Generate the BBS parameters --- */ |
682 | |
34e4f738 |
683 | if (bbs_gen(&bp, k->bits, k->r, 0, |
052b36d0 |
684 | (k->f & f_quiet) ? 0 : pgen_ev, 0)) |
252c122d |
685 | die(EXIT_FAILURE, "Blum-Blum-Shub key generation failed"); |
252c122d |
686 | |
687 | /* --- Allrighty then --- */ |
688 | |
689 | kd = &k->k->k; |
690 | key_structure(kd); |
691 | mpkey(kd, "n", bp.n, KCAT_PUB); |
692 | |
693 | kd = key_structcreate(kd, "private"); |
694 | key_structure(kd); |
695 | mpkey(kd, "p", bp.p, KCAT_PRIV | KF_BURN); |
696 | mpkey(kd, "q", bp.q, KCAT_PRIV | KF_BURN); |
697 | dolock(k, kd, "private"); |
698 | |
ab0ca95f |
699 | bbs_privfree(&bp); |
252c122d |
700 | } |
701 | |
1ba83484 |
702 | static void alg_ecparam(keyopts *k) |
703 | { |
704 | static const char *pl[] = { "curve", 0 }; |
705 | if (!copyparam(k, pl)) { |
706 | ec_info ei; |
707 | const char *e; |
708 | key_data *kd = &k->k->k; |
709 | |
710 | /* --- Decide on a curve --- */ |
711 | |
712 | if (!k->bits) k->bits = 256; |
3563e365 |
713 | if (k->curve && strcmp(k->curve, "list") == 0) { |
714 | const ecentry *ee; |
715 | printf("Built-in elliptic curves:\n"); |
716 | for (ee = ectab; ee->name; ee++) |
717 | printf(" %s\n", ee->name); |
718 | exit(0); |
719 | } |
1ba83484 |
720 | if (!k->curve) { |
721 | if (k->bits <= 56) k->curve = "secp112r1"; |
722 | else if (k->bits <= 64) k->curve = "secp128r1"; |
723 | else if (k->bits <= 80) k->curve = "secp160r1"; |
724 | else if (k->bits <= 96) k->curve = "secp192r1"; |
725 | else if (k->bits <= 112) k->curve = "secp224r1"; |
726 | else if (k->bits <= 128) k->curve = "secp256r1"; |
727 | else if (k->bits <= 192) k->curve = "secp384r1"; |
728 | else if (k->bits <= 256) k->curve = "secp521r1"; |
729 | else |
730 | die(EXIT_FAILURE, "no built-in curves provide %u-bit security", |
731 | k->bits); |
732 | } |
733 | |
734 | /* --- Check it --- */ |
735 | |
736 | if ((e = ec_getinfo(&ei, k->curve)) != 0) |
737 | die(EXIT_FAILURE, "error in curve spec: %s", e); |
34e4f738 |
738 | if (!(k->f & f_quiet) && (e = ec_checkinfo(&ei, k->r)) != 0) |
1ba83484 |
739 | moan("WARNING! curve check failed: %s", e); |
740 | ec_freeinfo(&ei); |
741 | |
742 | /* --- Write out the answer --- */ |
743 | |
744 | key_structure(kd); |
745 | kd = key_structcreate(kd, "curve"); |
746 | key_string(kd, k->curve); |
747 | kd->e |= KCAT_SHARE; |
748 | } |
749 | } |
750 | |
751 | static void alg_ec(keyopts *k) |
752 | { |
753 | key_data *kd = &k->k->k; |
754 | key_data *kkd; |
755 | mp *x = MP_NEW; |
756 | ec p = EC_INIT; |
757 | const char *e; |
758 | ec_info ei; |
759 | |
760 | /* --- Get the curve --- */ |
761 | |
762 | alg_ecparam(k); |
763 | if ((kkd = key_structfind(kd, "curve")) == 0) |
764 | die(EXIT_FAILURE, "unexpected failure looking up subkey `curve')"); |
765 | if ((kkd->e & KF_ENCMASK) != KENC_STRING) |
766 | die(EXIT_FAILURE, "subkey `curve' is not a string"); |
767 | if ((e = ec_getinfo(&ei, kkd->u.p)) != 0) |
768 | die(EXIT_FAILURE, "error in curve spec: %s", e); |
769 | |
770 | /* --- Invent a private exponent and compute the public key --- */ |
771 | |
34e4f738 |
772 | x = mprand_range(MP_NEWSEC, ei.r, k->r, 0); |
1ba83484 |
773 | ec_mul(ei.c, &p, &ei.g, x); |
774 | |
775 | /* --- Store everything away --- */ |
776 | |
777 | kkd = key_structcreate(kd, "p"); |
778 | key_ec(kkd, &p); |
779 | kkd->e |= KCAT_PUB; |
780 | kkd = key_structcreate(kd, "private"); |
781 | key_structure(kkd); |
782 | mpkey(kkd, "x", x, KCAT_PRIV | KF_BURN); |
783 | |
784 | /* --- Done --- */ |
785 | |
786 | ec_freeinfo(&ei); |
787 | mp_drop(x); |
788 | } |
789 | |
252c122d |
790 | /* --- The algorithm tables --- */ |
791 | |
792 | typedef struct keyalg { |
793 | const char *name; |
794 | void (*proc)(keyopts *o); |
795 | const char *help; |
796 | } keyalg; |
797 | |
798 | static keyalg algtab[] = { |
799 | { "binary", alg_binary, "Plain binary data" }, |
800 | { "des", alg_des, "Binary with DES-style parity" }, |
801 | { "rsa", alg_rsa, "RSA public-key encryption" }, |
802 | { "dsa", alg_dsa, "DSA digital signatures" }, |
803 | { "dsa-param", alg_dsaparam, "DSA shared parameters" }, |
804 | { "dh", alg_dh, "Diffie-Hellman key exchange" }, |
805 | { "dh-param", alg_dhparam, "Diffie-Hellman parameters" }, |
806 | { "bbs", alg_bbs, "Blum-Blum-Shub generator" }, |
1ba83484 |
807 | { "ec-param", alg_ecparam, "Elliptic curve parameters" }, |
808 | { "ec", alg_ec, "Elliptic curve crypto" }, |
252c122d |
809 | { 0, 0 } |
810 | }; |
d03ab969 |
811 | |
812 | /* --- @cmd_add@ --- */ |
813 | |
814 | static int cmd_add(int argc, char *argv[]) |
815 | { |
816 | key_file f; |
d03ab969 |
817 | time_t exp = KEXP_EXPIRE; |
252c122d |
818 | const char *tag = 0, *ptag = 0; |
d03ab969 |
819 | const char *c = 0; |
252c122d |
820 | keyalg *alg = algtab; |
052b36d0 |
821 | const char *rtag = 0; |
34e4f738 |
822 | const struct seedalg *sa = SEEDALG_DEFAULT; |
823 | keyopts k = { 0, 0, DSTR_INIT, 0, 0, 0, 0, 0 }; |
824 | const char *seed = 0; |
825 | k.r = &rand_global; |
d03ab969 |
826 | |
827 | /* --- Parse options for the subcommand --- */ |
828 | |
829 | for (;;) { |
830 | static struct option opt[] = { |
252c122d |
831 | { "algorithm", OPTF_ARGREQ, 0, 'a' }, |
d03ab969 |
832 | { "bits", OPTF_ARGREQ, 0, 'b' }, |
252c122d |
833 | { "qbits", OPTF_ARGREQ, 0, 'B' }, |
834 | { "parameters", OPTF_ARGREQ, 0, 'p' }, |
d03ab969 |
835 | { "expire", OPTF_ARGREQ, 0, 'e' }, |
836 | { "comment", OPTF_ARGREQ, 0, 'c' }, |
252c122d |
837 | { "tag", OPTF_ARGREQ, 0, 't' }, |
ce70ec47 |
838 | { "rand-id", OPTF_ARGREQ, 0, 'R' }, |
1ba83484 |
839 | { "curve", OPTF_ARGREQ, 0, 'C' }, |
34e4f738 |
840 | { "seedalg", OPTF_ARGREQ, 0, 'A' }, |
841 | { "seed", OPTF_ARGREQ, 0, 's' }, |
842 | { "newseed", OPTF_ARGREQ, 0, 'n' }, |
252c122d |
843 | { "lock", 0, 0, 'l' }, |
844 | { "quiet", 0, 0, 'q' }, |
40d5a112 |
845 | { "lim-lee", 0, 0, 'L' }, |
846 | { "subgroup", 0, 0, 'S' }, |
d03ab969 |
847 | { 0, 0, 0, 0 } |
848 | }; |
a9fcea0e |
849 | int i = mdwopt(argc, argv, "+a:b:B:p:e:c:t:R:C:A:s:n:lqrLS", |
850 | opt, 0, 0, 0); |
d03ab969 |
851 | if (i < 0) |
852 | break; |
853 | |
854 | /* --- Handle the various options --- */ |
855 | |
856 | switch (i) { |
857 | |
252c122d |
858 | /* --- Read an algorithm name --- */ |
859 | |
860 | case 'a': { |
861 | keyalg *a; |
862 | size_t sz = strlen(optarg); |
863 | |
864 | if (strcmp(optarg, "list") == 0) { |
865 | for (a = algtab; a->name; a++) |
866 | printf("%-10s %s\n", a->name, a->help); |
867 | return (0); |
868 | } |
869 | |
870 | alg = 0; |
871 | for (a = algtab; a->name; a++) { |
872 | if (strncmp(optarg, a->name, sz) == 0) { |
873 | if (a->name[sz] == 0) { |
874 | alg = a; |
875 | break; |
876 | } else if (alg) |
877 | die(EXIT_FAILURE, "ambiguous algorithm name `%s'", optarg); |
878 | else |
879 | alg = a; |
880 | } |
881 | } |
882 | if (!alg) |
883 | die(EXIT_FAILURE, "unknown algorithm name `%s'", optarg); |
884 | } break; |
885 | |
d03ab969 |
886 | /* --- Bits must be nonzero and a multiple of 8 --- */ |
887 | |
252c122d |
888 | case 'b': { |
889 | char *p; |
890 | k.bits = strtoul(optarg, &p, 0); |
891 | if (k.bits == 0 || *p != 0) |
892 | die(EXIT_FAILURE, "bad bitlength `%s'", optarg); |
893 | } break; |
894 | |
895 | case 'B': { |
896 | char *p; |
897 | k.qbits = strtoul(optarg, &p, 0); |
898 | if (k.qbits == 0 || *p != 0) |
899 | die(EXIT_FAILURE, "bad bitlength `%s'", optarg); |
900 | } break; |
901 | |
902 | /* --- Parameter selection --- */ |
903 | |
904 | case 'p': |
905 | ptag = optarg; |
d03ab969 |
906 | break; |
907 | |
908 | /* --- Expiry dates get passed to @get_date@ for parsing --- */ |
909 | |
910 | case 'e': |
252c122d |
911 | if (strncmp(optarg, "forever", strlen(optarg)) == 0) |
d03ab969 |
912 | exp = KEXP_FOREVER; |
913 | else { |
914 | exp = get_date(optarg, 0); |
915 | if (exp == -1) |
252c122d |
916 | die(EXIT_FAILURE, "bad expiry date `%s'", optarg); |
d03ab969 |
917 | } |
918 | break; |
919 | |
920 | /* --- Store comments without interpretation --- */ |
921 | |
922 | case 'c': |
252c122d |
923 | if (key_chkcomment(optarg)) |
924 | die(EXIT_FAILURE, "bad comment string `%s'", optarg); |
d03ab969 |
925 | c = optarg; |
926 | break; |
927 | |
1ba83484 |
928 | /* --- Elliptic curve parameters --- */ |
929 | |
930 | case 'C': |
1ba83484 |
931 | k.curve = optarg; |
932 | break; |
933 | |
252c122d |
934 | /* --- Store tags --- */ |
935 | |
936 | case 't': |
937 | if (key_chkident(optarg)) |
938 | die(EXIT_FAILURE, "bad tag string `%s'", optarg); |
939 | tag = optarg; |
940 | break; |
ce70ec47 |
941 | case 'r': |
942 | k.f |= f_retag; |
943 | break; |
252c122d |
944 | |
34e4f738 |
945 | /* --- Seeding --- */ |
946 | |
947 | case 'A': { |
948 | const struct seedalg *ss; |
949 | if (strcmp(optarg, "list") == 0) { |
950 | printf("Seed algorithms:\n"); |
951 | for (ss = seedtab; ss->p; ss++) |
952 | printf(" %s\n", ss->p); |
953 | exit(0); |
954 | } |
955 | if (seed) die(EXIT_FAILURE, "seed already set -- put -A first"); |
956 | sa = 0; |
957 | for (ss = seedtab; ss->p; ss++) { |
958 | if (strcmp(optarg, ss->p) == 0) |
959 | sa = ss; |
960 | } |
961 | if (!sa) |
962 | die(EXIT_FAILURE, "seed algorithm `%s' not known", optarg); |
963 | } break; |
964 | |
965 | case 's': { |
966 | base64_ctx b; |
967 | dstr d = DSTR_INIT; |
968 | if (seed) die(EXIT_FAILURE, "seed already set"); |
969 | base64_init(&b); |
970 | base64_decode(&b, optarg, strlen(optarg), &d); |
971 | base64_decode(&b, 0, 0, &d); |
972 | k.r = sa->gen(d.buf, d.len); |
973 | seed = optarg; |
974 | dstr_destroy(&d); |
975 | } break; |
976 | |
977 | case 'n': { |
978 | base64_ctx b; |
979 | dstr d = DSTR_INIT; |
980 | char *p; |
981 | unsigned n = strtoul(optarg, &p, 0); |
982 | if (n == 0 || *p != 0 || n % 8 != 0) |
983 | die(EXIT_FAILURE, "bad seed length `%s'", optarg); |
984 | if (seed) die(EXIT_FAILURE, "seed already set"); |
985 | n /= 8; |
986 | p = xmalloc(n); |
987 | rand_get(RAND_GLOBAL, p, n); |
988 | base64_init(&b); |
989 | base64_encode(&b, p, n, &d); |
990 | base64_encode(&b, 0, 0, &d); |
991 | seed = d.buf; |
992 | k.r = sa->gen(p, n); |
993 | } break; |
994 | |
252c122d |
995 | /* --- Other flags --- */ |
996 | |
ce70ec47 |
997 | case 'R': |
052b36d0 |
998 | rtag = optarg; |
999 | break; |
252c122d |
1000 | case 'l': |
1001 | k.f |= f_lock; |
1002 | break; |
1003 | case 'q': |
1004 | k.f |= f_quiet; |
1005 | break; |
40d5a112 |
1006 | case 'L': |
1007 | k.f |= f_limlee; |
1008 | break; |
1009 | case 'S': |
1010 | k.f |= f_subgroup; |
1011 | break; |
252c122d |
1012 | |
d03ab969 |
1013 | /* --- Other things are bogus --- */ |
1014 | |
1015 | default: |
252c122d |
1016 | k.f |= f_bogus; |
d03ab969 |
1017 | break; |
1018 | } |
1019 | } |
1020 | |
252c122d |
1021 | /* --- Various sorts of bogosity --- */ |
d03ab969 |
1022 | |
252c122d |
1023 | if ((k.f & f_bogus) || optind + 1 > argc) { |
d03ab969 |
1024 | die(EXIT_FAILURE, |
252c122d |
1025 | "Usage: add [options] type [attr...]"); |
d03ab969 |
1026 | } |
252c122d |
1027 | if (key_chkident(argv[optind])) |
1028 | die(EXIT_FAILURE, "bad key type `%s'", argv[optind]); |
1029 | |
1030 | /* --- Set up various bits of the state --- */ |
1031 | |
d03ab969 |
1032 | if (exp == KEXP_EXPIRE) |
1033 | exp = time(0) + 14 * 24 * 60 * 60; |
1034 | |
252c122d |
1035 | /* --- Open the file and create the basic key block --- * |
1036 | * |
1037 | * Keep on generating keyids until one of them doesn't collide. |
1038 | */ |
d03ab969 |
1039 | |
252c122d |
1040 | doopen(&f, KOPEN_WRITE); |
1041 | k.kf = &f; |
1042 | |
052b36d0 |
1043 | /* --- Key the generator --- */ |
1044 | |
1045 | keyrand(&f, rtag); |
1046 | |
252c122d |
1047 | for (;;) { |
1048 | uint32 id = rand_global.ops->word(&rand_global); |
1049 | int err; |
1050 | k.k = key_new(&f, id, argv[optind], exp, &err); |
1051 | if (k.k) |
1052 | break; |
1053 | if (err != KERR_DUPID) |
1054 | die(EXIT_FAILURE, "error adding new key: %s", key_strerror(err)); |
1055 | } |
d03ab969 |
1056 | |
252c122d |
1057 | /* --- Set various simple attributes --- */ |
d03ab969 |
1058 | |
252c122d |
1059 | if (tag) { |
ce70ec47 |
1060 | int err; |
1061 | key *kk; |
1062 | if (k.f & f_retag) { |
1063 | if ((kk = key_bytag(&f, tag)) != 0 && strcmp(kk->tag, tag) == 0) |
1064 | key_settag(&f, kk, 0); |
1065 | } |
1066 | if ((err = key_settag(&f, k.k, tag)) != 0) |
252c122d |
1067 | die(EXIT_FAILURE, "error setting key tag: %s", key_strerror(err)); |
1068 | } |
d03ab969 |
1069 | |
252c122d |
1070 | if (c) { |
1071 | int err = key_setcomment(&f, k.k, c); |
1072 | if (err) |
1073 | die(EXIT_FAILURE, "error setting key comment: %s", key_strerror(err)); |
1074 | } |
1075 | |
1076 | setattr(&f, k.k, argv + optind + 1); |
34e4f738 |
1077 | if (seed) { |
1078 | key_putattr(&f, k.k, "genseed", seed); |
1079 | key_putattr(&f, k.k, "seedalg", sa->p); |
1080 | } |
252c122d |
1081 | |
1082 | key_fulltag(k.k, &k.tag); |
1083 | |
1084 | /* --- Find the parameter key --- */ |
1085 | |
1086 | if (ptag) { |
1087 | if ((k.p = key_bytag(&f, ptag)) == 0) |
1088 | die(EXIT_FAILURE, "parameter key `%s' not found", ptag); |
1089 | if ((k.p->k.e & KF_ENCMASK) != KENC_STRUCT) |
1090 | die(EXIT_FAILURE, "parameter key `%s' is not structured", ptag); |
1091 | } |
1092 | |
1093 | /* --- Now generate the actual key data --- */ |
1094 | |
1095 | alg->proc(&k); |
1096 | |
1097 | /* --- Done --- */ |
d03ab969 |
1098 | |
d03ab969 |
1099 | doclose(&f); |
1100 | return (0); |
1101 | } |
1102 | |
252c122d |
1103 | /*----- Key listing -------------------------------------------------------*/ |
1104 | |
1105 | /* --- Listing options --- */ |
1106 | |
1107 | typedef struct listopts { |
1108 | const char *tfmt; /* Date format (@strftime@-style) */ |
1109 | int v; /* Verbosity level */ |
1110 | unsigned f; /* Various flags */ |
1111 | time_t t; /* Time now (for key expiry) */ |
1112 | key_filter kf; /* Filter for matching keys */ |
1113 | } listopts; |
1114 | |
1115 | /* --- Listing flags --- */ |
1116 | |
16efd15b |
1117 | #define f_newline 2u /* Write newline before next entry */ |
1118 | #define f_attr 4u /* Written at least one attribute */ |
1119 | #define f_utc 8u /* Emit UTC time, not local time */ |
252c122d |
1120 | |
1121 | /* --- @showkeydata@ --- * |
1122 | * |
1123 | * Arguments: @key_data *k@ = pointer to key to write |
1124 | * @int ind@ = indentation level |
1125 | * @listopts *o@ = listing options |
1126 | * @dstr *d@ = tag string for this subkey |
1127 | * |
1128 | * Returns: --- |
1129 | * |
1130 | * Use: Emits a piece of key data in a human-readable format. |
1131 | */ |
1132 | |
1133 | static void showkeydata(key_data *k, int ind, listopts *o, dstr *d) |
1134 | { |
1135 | #define INDENT(i) do { \ |
1136 | int _i; \ |
1137 | for (_i = 0; _i < (i); _i++) { \ |
1138 | putchar(' '); \ |
1139 | } \ |
1140 | } while (0) |
1141 | |
1142 | switch (k->e & KF_ENCMASK) { |
1143 | |
1144 | /* --- Binary key data --- * |
1145 | * |
1146 | * Emit as a simple hex dump. |
1147 | */ |
1148 | |
1149 | case KENC_BINARY: { |
1150 | const octet *p = k->u.k.k; |
1151 | const octet *l = p + k->u.k.sz; |
1152 | size_t sz = 0; |
1153 | |
1154 | fputs(" {", stdout); |
1155 | while (p < l) { |
1156 | if (sz % 16 == 0) { |
1157 | putchar('\n'); |
1158 | INDENT(ind + 2); |
1159 | } else if (sz % 8 == 0) |
1160 | fputs(" ", stdout); |
1161 | else |
1162 | putc(' ', stdout); |
1163 | printf("%02x", *p++); |
1164 | sz++; |
1165 | } |
1166 | putchar('\n'); |
1167 | INDENT(ind); |
1168 | fputs("}\n", stdout); |
1169 | } break; |
1170 | |
1171 | /* --- Encrypted data --- * |
1172 | * |
1173 | * If the user is sufficiently keen, ask for a passphrase and decrypt the |
1174 | * key. Otherwise just say that it's encrypted and move on. |
1175 | */ |
1176 | |
1177 | case KENC_ENCRYPT: |
1178 | if (o->v <= 3) |
1179 | fputs(" encrypted\n", stdout); |
1180 | else { |
1181 | key_data kd; |
1182 | if (key_punlock(d->buf, k, &kd)) |
1183 | printf(" <failed to unlock %s>\n", d->buf); |
1184 | else { |
1185 | fputs(" encrypted", stdout); |
1186 | showkeydata(&kd, ind, o, d); |
1187 | key_destroy(&kd); |
1188 | } |
1189 | } |
1190 | break; |
1191 | |
1192 | /* --- Integer keys --- * |
1193 | * |
1194 | * Emit as a large integer in decimal. This makes using the key in |
1195 | * `calc' or whatever easier. |
1196 | */ |
1197 | |
1198 | case KENC_MP: |
1199 | putchar(' '); |
1200 | mp_writefile(k->u.m, stdout, 10); |
1201 | putchar('\n'); |
1202 | break; |
1203 | |
1ba83484 |
1204 | /* --- Strings --- */ |
1205 | |
1206 | case KENC_STRING: |
1207 | printf(" `%s'\n", k->u.p); |
1208 | break; |
1209 | |
1210 | /* --- Elliptic curve points --- */ |
1211 | |
1212 | case KENC_EC: |
d1ee65aa |
1213 | if (EC_ATINF(&k->u.e)) |
a9fcea0e |
1214 | fputs(" inf\n", stdout); |
d1ee65aa |
1215 | else { |
1216 | fputs(" 0x", stdout); mp_writefile(k->u.e.x, stdout, 16); |
1217 | fputs(", 0x", stdout); mp_writefile(k->u.e.y, stdout, 16); |
1218 | putchar('\n'); |
1219 | } |
1ba83484 |
1220 | break; |
1221 | |
252c122d |
1222 | /* --- Structured keys --- * |
1223 | * |
1224 | * Just iterate over the subkeys. |
1225 | */ |
1226 | |
1227 | case KENC_STRUCT: { |
1228 | sym_iter i; |
1229 | key_struct *ks; |
1230 | size_t n = d->len; |
1231 | |
1232 | fputs(" {\n", stdout); |
1233 | for (sym_mkiter(&i, &k->u.s); (ks = sym_next(&i)) != 0; ) { |
1234 | if (!key_match(&ks->k, &o->kf)) |
1235 | continue; |
1236 | INDENT(ind + 2); |
1237 | printf("%s =", SYM_NAME(ks)); |
1238 | d->len = n; |
1239 | dstr_putf(d, ".%s", SYM_NAME(ks)); |
1240 | showkeydata(&ks->k, ind + 2, o, d); |
1241 | } |
1242 | INDENT(ind); |
1243 | fputs("}\n", stdout); |
1244 | } break; |
1245 | } |
1246 | |
1247 | #undef INDENT |
1248 | } |
1249 | |
1250 | /* --- @showkey@ --- * |
1251 | * |
1252 | * Arguments: @key *k@ = pointer to key to show |
1253 | * @listopts *o@ = pointer to listing options |
1254 | * |
1255 | * Returns: --- |
1256 | * |
1257 | * Use: Emits a listing of a particular key. |
1258 | */ |
1259 | |
1260 | static void showkey(key *k, listopts *o) |
1261 | { |
1262 | char ebuf[24], dbuf[24]; |
1263 | struct tm *tm; |
1264 | |
1265 | /* --- Skip the key if the filter doesn't match --- */ |
1266 | |
1267 | if (!key_match(&k->k, &o->kf)) |
1268 | return; |
1269 | |
1270 | /* --- Sort out the expiry and deletion times --- */ |
1271 | |
1272 | if (KEY_EXPIRED(o->t, k->exp)) |
1273 | strcpy(ebuf, "expired"); |
1274 | else if (k->exp == KEXP_FOREVER) |
1275 | strcpy(ebuf, "forever"); |
1276 | else { |
1277 | tm = (o->f & f_utc) ? gmtime(&k->exp) : localtime(&k->exp); |
1278 | strftime(ebuf, sizeof(ebuf), o->tfmt, tm); |
1279 | } |
1280 | |
1281 | if (KEY_EXPIRED(o->t, k->del)) |
1282 | strcpy(dbuf, "deleted"); |
1283 | else if (k->del == KEXP_FOREVER) |
1284 | strcpy(dbuf, "forever"); |
1285 | else { |
1286 | tm = (o->f & f_utc) ? gmtime(&k->del) : localtime(&k->del); |
1287 | strftime(dbuf, sizeof(dbuf), o->tfmt, tm); |
1288 | } |
1289 | |
1290 | /* --- If in compact format, just display and quit --- */ |
1291 | |
1292 | if (!o->v) { |
1293 | if (!(o->f & f_newline)) { |
1294 | printf("%8s %-20s %-20s %-10s %-10s\n", |
1295 | "Id", "Tag", "Type", "Expire", "Delete"); |
1296 | } |
1297 | printf("%08lx %-20s %-20s %-10s %-10s\n", |
1298 | (unsigned long)k->id, k->tag ? k->tag : "<none>", |
1299 | k->type, ebuf, dbuf); |
1300 | o->f |= f_newline; |
1301 | return; |
1302 | } |
1303 | |
1304 | /* --- Display the standard header --- */ |
1305 | |
1306 | if (o->f & f_newline) |
1307 | fputc('\n', stdout); |
1308 | printf("keyid: %08lx\n", (unsigned long)k->id); |
1309 | printf("tag: %s\n", k->tag ? k->tag : "<none>"); |
1310 | printf("type: %s\n", k->type); |
1311 | printf("expiry: %s\n", ebuf); |
1312 | printf("delete: %s\n", dbuf); |
1313 | printf("comment: %s\n", k->c ? k->c : "<none>"); |
1314 | |
1315 | /* --- Display the attributes --- */ |
1316 | |
1317 | if (o->v > 1) { |
1318 | key_attriter i; |
1319 | const char *av, *an; |
1320 | |
1321 | o->f &= ~f_attr; |
1322 | printf("attributes:"); |
1323 | for (key_mkattriter(&i, k); key_nextattr(&i, &an, &av); ) { |
dce3fb0d |
1324 | printf("\n %s = %s", an, av); |
252c122d |
1325 | o->f |= f_attr; |
1326 | } |
1327 | if (o->f & f_attr) |
1328 | fputc('\n', stdout); |
1329 | else |
1330 | puts(" <none>"); |
1331 | } |
1332 | |
1333 | /* --- If dumping requested, dump the raw key data --- */ |
1334 | |
1335 | if (o->v > 2) { |
1336 | dstr d = DSTR_INIT; |
1337 | fputs("key:", stdout); |
1338 | key_fulltag(k, &d); |
1339 | showkeydata(&k->k, 0, o, &d); |
1340 | dstr_destroy(&d); |
1341 | } |
1342 | |
1343 | o->f |= f_newline; |
1344 | } |
1345 | |
1346 | /* --- @cmd_list@ --- */ |
1347 | |
1348 | static int cmd_list(int argc, char *argv[]) |
1349 | { |
1350 | key_file f; |
1351 | key *k; |
1352 | listopts o = { 0, 0, 0, 0, { 0, 0 } }; |
1353 | |
1354 | /* --- Parse subcommand options --- */ |
1355 | |
1356 | for (;;) { |
1357 | static struct option opt[] = { |
1358 | { "quiet", 0, 0, 'q' }, |
1359 | { "verbose", 0, 0, 'v' }, |
1360 | { "utc", 0, 0, 'u' }, |
1361 | { "filter", OPTF_ARGREQ, 0, 'f' }, |
1362 | { 0, 0, 0, 0 } |
1363 | }; |
1364 | int i = mdwopt(argc, argv, "+uqvf:", opt, 0, 0, 0); |
1365 | if (i < 0) |
1366 | break; |
1367 | |
1368 | switch (i) { |
1369 | case 'u': |
1370 | o.f |= f_utc; |
1371 | break; |
1372 | case 'q': |
1373 | if (o.v) |
1374 | o.v--; |
1375 | break; |
1376 | case 'v': |
1377 | o.v++; |
1378 | break; |
1379 | case 'f': { |
1380 | char *p; |
1381 | int e = key_readflags(optarg, &p, &o.kf.f, &o.kf.m); |
1382 | if (e || *p) |
1383 | die(EXIT_FAILURE, "bad filter string `%s'", optarg); |
1384 | } break; |
1385 | default: |
1386 | o.f |= f_bogus; |
1387 | break; |
1388 | } |
1389 | } |
1390 | |
1391 | if (o.f & f_bogus) |
1392 | die(EXIT_FAILURE, "Usage: list [-uqv] [-f filter] [tag...]"); |
1393 | |
1394 | /* --- Open the key file --- */ |
1395 | |
1396 | doopen(&f, KOPEN_READ); |
1397 | o.t = time(0); |
1398 | |
1399 | /* --- Set up the time format --- */ |
1400 | |
1401 | if (!o.v) |
1402 | o.tfmt = "%Y-%m-%d"; |
1403 | else if (o.f & f_utc) |
1404 | o.tfmt = "%Y-%m-%d %H:%M:%S UTC"; |
1405 | else |
1406 | o.tfmt = "%Y-%m-%d %H:%M:%S %Z"; |
1407 | |
1408 | /* --- If specific keys were requested use them, otherwise do all --- * |
1409 | * |
1410 | * Some day, this might turn into a wildcard match. |
1411 | */ |
1412 | |
1413 | if (optind < argc) { |
1414 | do { |
1415 | if ((k = key_bytag(&f, argv[optind])) != 0) |
1416 | showkey(k, &o); |
1417 | else { |
1418 | moan("key `%s' not found", argv[optind]); |
1419 | o.f |= f_bogus; |
1420 | } |
1421 | optind++; |
1422 | } while (optind < argc); |
1423 | } else { |
1424 | key_iter i; |
1425 | for (key_mkiter(&i, &f); (k = key_next(&i)) != 0; ) |
1426 | showkey(k, &o); |
1427 | } |
1428 | |
1429 | /* --- Done --- */ |
1430 | |
1431 | doclose(&f); |
1432 | if (o.f & f_bogus) |
1433 | return (EXIT_FAILURE); |
1434 | else |
1435 | return (0); |
1436 | } |
1437 | |
1438 | /*----- Command implementation --------------------------------------------*/ |
1439 | |
d03ab969 |
1440 | /* --- @cmd_expire@ --- */ |
1441 | |
1442 | static int cmd_expire(int argc, char *argv[]) |
1443 | { |
1444 | key_file f; |
1445 | key *k; |
d03ab969 |
1446 | int i; |
1447 | int rc = 0; |
1448 | |
1449 | if (argc < 2) |
252c122d |
1450 | die(EXIT_FAILURE, "Usage: expire tag..."); |
d03ab969 |
1451 | doopen(&f, KOPEN_WRITE); |
1452 | for (i = 1; i < argc; i++) { |
252c122d |
1453 | if ((k = key_bytag(&f, argv[i])) != 0) |
d03ab969 |
1454 | key_expire(&f, k); |
1455 | else { |
252c122d |
1456 | moan("key `%s' not found", argv[i]); |
d03ab969 |
1457 | rc = 1; |
1458 | } |
1459 | } |
1460 | doclose(&f); |
1461 | return (rc); |
1462 | } |
1463 | |
1464 | /* --- @cmd_delete@ --- */ |
1465 | |
1466 | static int cmd_delete(int argc, char *argv[]) |
1467 | { |
1468 | key_file f; |
1469 | key *k; |
d03ab969 |
1470 | int i; |
1471 | int rc = 0; |
1472 | |
1473 | if (argc < 2) |
252c122d |
1474 | die(EXIT_FAILURE, "Usage: delete tag..."); |
d03ab969 |
1475 | doopen(&f, KOPEN_WRITE); |
1476 | for (i = 1; i < argc; i++) { |
252c122d |
1477 | if ((k = key_bytag(&f, argv[i])) != 0) |
d03ab969 |
1478 | key_delete(&f, k); |
1479 | else { |
252c122d |
1480 | moan("key `%s' not found", argv[i]); |
d03ab969 |
1481 | rc = 1; |
1482 | } |
1483 | } |
1484 | doclose(&f); |
1485 | return (rc); |
1486 | } |
1487 | |
1488 | /* --- @cmd_setattr@ --- */ |
1489 | |
1490 | static int cmd_setattr(int argc, char *argv[]) |
1491 | { |
1492 | key_file f; |
1493 | key *k; |
d03ab969 |
1494 | |
1495 | if (argc < 3) |
252c122d |
1496 | die(EXIT_FAILURE, "Usage: setattr tag attr..."); |
d03ab969 |
1497 | doopen(&f, KOPEN_WRITE); |
252c122d |
1498 | if ((k = key_bytag(&f, argv[1])) == 0) |
1499 | die(EXIT_FAILURE, "key `%s' not found", argv[1]); |
d03ab969 |
1500 | setattr(&f, k, argv + 2); |
1501 | doclose(&f); |
1502 | return (0); |
1503 | } |
1504 | |
252c122d |
1505 | /* --- @cmd_finger@ --- */ |
d03ab969 |
1506 | |
981bf127 |
1507 | static void fingerprint(key *k, const gchash *ch, const key_filter *kf) |
d03ab969 |
1508 | { |
981bf127 |
1509 | ghash *h; |
252c122d |
1510 | dstr d = DSTR_INIT; |
981bf127 |
1511 | const octet *p; |
1512 | size_t i; |
d03ab969 |
1513 | |
981bf127 |
1514 | h = GH_INIT(ch); |
1515 | if (key_fingerprint(k, h, kf)) { |
1516 | p = GH_DONE(h, 0); |
1517 | key_fulltag(k, &d); |
1518 | for (i = 0; i < ch->hashsz; i++) { |
1519 | if (i && i % 4 == 0) |
1520 | putchar('-'); |
1521 | printf("%02x", p[i]); |
1522 | } |
1523 | printf(" %s\n", d.buf); |
252c122d |
1524 | } |
252c122d |
1525 | dstr_destroy(&d); |
981bf127 |
1526 | GH_DESTROY(h); |
252c122d |
1527 | } |
d03ab969 |
1528 | |
252c122d |
1529 | static int cmd_finger(int argc, char *argv[]) |
1530 | { |
1531 | key_file f; |
1532 | int rc = 0; |
981bf127 |
1533 | const gchash *ch = &rmd160; |
252c122d |
1534 | key_filter kf = { KF_NONSECRET, KF_NONSECRET }; |
d03ab969 |
1535 | |
1536 | for (;;) { |
1537 | static struct option opt[] = { |
252c122d |
1538 | { "filter", OPTF_ARGREQ, 0, 'f' }, |
981bf127 |
1539 | { "algorithm", OPTF_ARGREQ, 0, 'a' }, |
252c122d |
1540 | { 0, 0, 0, 0 } |
d03ab969 |
1541 | }; |
981bf127 |
1542 | int i = mdwopt(argc, argv, "+f:a:", opt, 0, 0, 0); |
d03ab969 |
1543 | if (i < 0) |
1544 | break; |
d03ab969 |
1545 | switch (i) { |
252c122d |
1546 | case 'f': { |
1547 | char *p; |
1548 | int err = key_readflags(optarg, &p, &kf.f, &kf.m); |
1549 | if (err || *p) |
1550 | die(EXIT_FAILURE, "bad filter string `%s'", optarg); |
1551 | } break; |
981bf127 |
1552 | case 'a': |
1553 | if ((ch = ghash_byname(optarg)) == 0) |
1554 | die(EXIT_FAILURE, "unknown hash algorithm `%s'", optarg); |
1555 | break; |
d03ab969 |
1556 | default: |
252c122d |
1557 | rc = 1; |
d03ab969 |
1558 | break; |
1559 | } |
1560 | } |
1561 | |
252c122d |
1562 | argv += optind; argc -= optind; |
1563 | if (rc) |
1564 | die(EXIT_FAILURE, "Usage: fingerprint [-f filter] [tag...]"); |
d03ab969 |
1565 | |
1566 | doopen(&f, KOPEN_READ); |
d03ab969 |
1567 | |
252c122d |
1568 | if (argc) { |
1569 | int i; |
1570 | for (i = 0; i < argc; i++) { |
1571 | key *k = key_bytag(&f, argv[i]); |
1572 | if (k) |
981bf127 |
1573 | fingerprint(k, ch, &kf); |
252c122d |
1574 | else { |
1575 | rc = 1; |
1576 | moan("key `%s' not found", argv[i]); |
1577 | } |
1578 | } |
1579 | } else { |
1580 | key_iter i; |
1581 | key *k; |
1582 | for (key_mkiter(&i, &f); (k = key_next(&i)) != 0; ) |
981bf127 |
1583 | fingerprint(k, ch, &kf); |
252c122d |
1584 | } |
1585 | return (rc); |
1586 | } |
d03ab969 |
1587 | |
252c122d |
1588 | /* --- @cmd_comment@ --- */ |
d03ab969 |
1589 | |
252c122d |
1590 | static int cmd_comment(int argc, char *argv[]) |
1591 | { |
1592 | key_file f; |
1593 | key *k; |
1594 | int err; |
d03ab969 |
1595 | |
252c122d |
1596 | if (argc < 2 || argc > 3) |
1597 | die(EXIT_FAILURE, "Usage: comment tag [comment]"); |
1598 | doopen(&f, KOPEN_WRITE); |
1599 | if ((k = key_bytag(&f, argv[1])) == 0) |
1600 | die(EXIT_FAILURE, "key `%s' not found", argv[1]); |
1601 | if ((err = key_setcomment(&f, k, argv[2])) != 0) |
1602 | die(EXIT_FAILURE, "bad comment `%s': %s", argv[2], key_strerror(err)); |
1603 | doclose(&f); |
1604 | return (0); |
1605 | } |
d03ab969 |
1606 | |
252c122d |
1607 | /* --- @cmd_tag@ --- */ |
d03ab969 |
1608 | |
252c122d |
1609 | static int cmd_tag(int argc, char *argv[]) |
1610 | { |
1611 | key_file f; |
1612 | key *k; |
1613 | int err; |
ce70ec47 |
1614 | unsigned flags = 0; |
1615 | int rc = 0; |
d03ab969 |
1616 | |
ce70ec47 |
1617 | for (;;) { |
1618 | static struct option opt[] = { |
1619 | { "retag", 0, 0, 'r' }, |
1620 | { 0, 0, 0, 0 } |
1621 | }; |
1622 | int i = mdwopt(argc, argv, "+r", opt, 0, 0, 0); |
1623 | if (i < 0) |
1624 | break; |
1625 | switch (i) { |
1626 | case 'r': |
1627 | flags |= f_retag; |
1628 | break; |
1629 | default: |
1630 | rc = 1; |
1631 | break; |
1632 | } |
1633 | } |
1634 | |
1635 | argv += optind; argc -= optind; |
1636 | if (argc < 1 || argc > 2 || rc) |
1637 | die(EXIT_FAILURE, "Usage: tag [-r] tag [new-tag]"); |
252c122d |
1638 | doopen(&f, KOPEN_WRITE); |
ce70ec47 |
1639 | if (flags & f_retag) { |
1640 | if ((k = key_bytag(&f, argv[1])) != 0 && strcmp(k->tag, argv[1]) == 0) |
1641 | key_settag(&f, k, 0); |
1642 | } |
1643 | if ((k = key_bytag(&f, argv[0])) == 0) |
1644 | die(EXIT_FAILURE, "key `%s' not found", argv[0]); |
1645 | if ((err = key_settag(&f, k, argv[1])) != 0) |
1646 | die(EXIT_FAILURE, "bad tag `%s': %s", argv[1], key_strerror(err)); |
252c122d |
1647 | doclose(&f); |
1648 | return (0); |
1649 | } |
d03ab969 |
1650 | |
252c122d |
1651 | /* --- @cmd_lock@ --- */ |
d03ab969 |
1652 | |
252c122d |
1653 | static int cmd_lock(int argc, char *argv[]) |
1654 | { |
1655 | key_file f; |
1656 | key *k; |
1657 | key_data *kd; |
1658 | dstr d = DSTR_INIT; |
d03ab969 |
1659 | |
252c122d |
1660 | if (argc != 2) |
1661 | die(EXIT_FAILURE, "Usage: lock qtag"); |
1662 | doopen(&f, KOPEN_WRITE); |
1663 | if (key_qtag(&f, argv[1], &d, &k, &kd)) |
1664 | die(EXIT_FAILURE, "key `%s' not found", argv[1]); |
1665 | if (kd->e == KENC_ENCRYPT && key_punlock(d.buf, kd, kd)) |
1666 | die(EXIT_FAILURE, "couldn't unlock key `%s'", d.buf); |
1667 | if (key_plock(d.buf, kd, kd)) |
1668 | die(EXIT_FAILURE, "failed to lock key `%s'", d.buf); |
1669 | f.f |= KF_MODIFIED; |
1670 | doclose(&f); |
1671 | return (0); |
1672 | } |
d03ab969 |
1673 | |
252c122d |
1674 | /* --- @cmd_unlock@ --- */ |
d03ab969 |
1675 | |
252c122d |
1676 | static int cmd_unlock(int argc, char *argv[]) |
1677 | { |
1678 | key_file f; |
1679 | key *k; |
1680 | key_data *kd; |
1681 | dstr d = DSTR_INIT; |
d03ab969 |
1682 | |
252c122d |
1683 | if (argc != 2) |
1684 | die(EXIT_FAILURE, "Usage: unlock qtag"); |
1685 | doopen(&f, KOPEN_WRITE); |
1686 | if (key_qtag(&f, argv[1], &d, &k, &kd)) |
1687 | die(EXIT_FAILURE, "key `%s' not found", argv[1]); |
1688 | if (kd->e != KENC_ENCRYPT) |
1689 | die(EXIT_FAILURE, "key `%s' is not encrypted", d.buf); |
1690 | if (kd->e == KENC_ENCRYPT && key_punlock(d.buf, kd, kd)) |
1691 | die(EXIT_FAILURE, "couldn't unlock key `%s'", d.buf); |
1692 | f.f |= KF_MODIFIED; |
d03ab969 |
1693 | doclose(&f); |
1694 | return (0); |
1695 | } |
1696 | |
1697 | /* --- @cmd_extract@ --- */ |
1698 | |
1699 | static int cmd_extract(int argc, char *argv[]) |
1700 | { |
1701 | key_file f; |
1702 | key *k; |
d03ab969 |
1703 | int i; |
1704 | int rc = 0; |
252c122d |
1705 | key_filter kf = { 0, 0 }; |
d03ab969 |
1706 | FILE *fp; |
1707 | |
252c122d |
1708 | for (;;) { |
1709 | static struct option opt[] = { |
1710 | { "filter", OPTF_ARGREQ, 0, 'f' }, |
1711 | { 0, 0, 0, 0 } |
1712 | }; |
1713 | int i = mdwopt(argc, argv, "f:", opt, 0, 0, 0); |
1714 | if (i < 0) |
1715 | break; |
1716 | switch (i) { |
1717 | case 'f': { |
1718 | char *p; |
1719 | int err = key_readflags(optarg, &p, &kf.f, &kf.m); |
1720 | if (err || *p) |
1721 | die(EXIT_FAILURE, "bad filter string `%s'", optarg); |
1722 | } break; |
1723 | default: |
1724 | rc = 1; |
1725 | break; |
1726 | } |
1727 | } |
1728 | |
1729 | argv += optind; argc -= optind; |
1730 | if (rc || argc < 1) |
1731 | die(EXIT_FAILURE, "Usage: extract [-f filter] file [tag...]"); |
1732 | if (strcmp(*argv, "-") == 0) |
d03ab969 |
1733 | fp = stdout; |
252c122d |
1734 | else if (!(fp = fopen(*argv, "w"))) { |
d03ab969 |
1735 | die(EXIT_FAILURE, "couldn't open `%s' for writing: %s", |
252c122d |
1736 | *argv, strerror(errno)); |
d03ab969 |
1737 | } |
1738 | |
252c122d |
1739 | doopen(&f, KOPEN_READ); |
1740 | if (argc < 2) { |
1741 | key_iter i; |
1742 | key *k; |
1743 | for (key_mkiter(&i, &f); (k = key_next(&i)) != 0; ) |
1744 | key_extract(&f, k, fp, &kf); |
1745 | } else { |
1746 | for (i = 1; i < argc; i++) { |
1747 | if ((k = key_bytag(&f, argv[i])) != 0) |
1748 | key_extract(&f, k, fp, &kf); |
1749 | else { |
1750 | moan("key `%s' not found", argv[i]); |
1751 | rc = 1; |
1752 | } |
d03ab969 |
1753 | } |
1754 | } |
252c122d |
1755 | if (fclose(fp)) |
1756 | die(EXIT_FAILURE, "error writing file: %s", strerror(errno)); |
d03ab969 |
1757 | doclose(&f); |
1758 | return (rc); |
1759 | } |
1760 | |
1761 | /* --- @cmd_tidy@ --- */ |
1762 | |
1763 | static int cmd_tidy(int argc, char *argv[]) |
1764 | { |
1765 | key_file f; |
1766 | if (argc != 1) |
1767 | die(EXIT_FAILURE, "usage: tidy"); |
1768 | doopen(&f, KOPEN_WRITE); |
1769 | f.f |= KF_MODIFIED; /* Nasty hack */ |
1770 | doclose(&f); |
1771 | return (0); |
1772 | } |
1773 | |
1774 | /* --- @cmd_merge@ --- */ |
1775 | |
1776 | static int cmd_merge(int argc, char *argv[]) |
1777 | { |
1778 | key_file f; |
1779 | FILE *fp; |
1780 | |
1781 | if (argc != 2) |
252c122d |
1782 | die(EXIT_FAILURE, "Usage: merge file"); |
d03ab969 |
1783 | if (strcmp(argv[1], "-") == 0) |
1784 | fp = stdin; |
1785 | else if (!(fp = fopen(argv[1], "r"))) { |
1786 | die(EXIT_FAILURE, "couldn't open `%s' for writing: %s", |
1787 | argv[1], strerror(errno)); |
1788 | } |
1789 | |
1790 | doopen(&f, KOPEN_WRITE); |
252c122d |
1791 | key_merge(&f, argv[1], fp, key_moan, 0); |
d03ab969 |
1792 | doclose(&f); |
1793 | return (0); |
1794 | } |
1795 | |
1796 | /*----- Main command table ------------------------------------------------*/ |
1797 | |
1798 | static struct cmd { |
1799 | const char *name; |
1800 | int (*cmd)(int /*argc*/, char */*argv*/[]); |
ce70ec47 |
1801 | const char *usage; |
d03ab969 |
1802 | const char *help; |
1803 | } cmds[] = { |
1804 | { "add", cmd_add, |
252c122d |
1805 | "add [options] type [attr...]\n\ |
ce70ec47 |
1806 | Options: [-lqrLS] [-a alg] [-bB bits] [-p param] [-R tag]\n\ |
1807 | [-e expire] [-t tag] [-c comment]", "\ |
1808 | Options:\n\ |
1809 | \n\ |
1810 | -a, --algorithm=ALG Generate keys suitable for ALG.\n\ |
1811 | -b, --bits=N Generate an N-bit key.\n\ |
1812 | -B, --qbits=N Use an N-bit subgroup or factors.\n\ |
1813 | -p, --parameters=TAG Get group parameters from TAG.\n\ |
1ba83484 |
1814 | -C, --curve=CURVE Use elliptic curve CURVE.\n\ |
ce70ec47 |
1815 | -e, --expire=TIME Make the key expire after TIME.\n\ |
1816 | -c, --comment=STRING Attach the command STRING to the key.\n\ |
1817 | -t, --tag=TAG Tag the key with the name TAG.\n\ |
1818 | -r, --retag Untag any key currently with that tag.\n\ |
1819 | -R, --rand-id=TAG Use key named TAG for the random number generator.\n\ |
1820 | -l, --lock Lock the generated key with a passphrase.\n\ |
1821 | -q, --quiet Don't give progress indicators while working.\n\ |
1822 | -L, --lim-lee Generate Lim-Lee primes for Diffie-Hellman groups.\n\ |
1823 | -S, --subgroup Use a prime-order subgroup for Diffie-Hellman.\n\ |
1824 | " }, |
252c122d |
1825 | { "expire", cmd_expire, "expire tag..." }, |
1826 | { "delete", cmd_delete, "delete tag..." }, |
ce70ec47 |
1827 | { "tag", cmd_tag, "tag [-r] tag [new-tag]", "\ |
1828 | Options:\n\ |
1829 | \n\ |
1830 | -r, --retag Untag any key currently called new-tag.\n\ |
1831 | " }, |
252c122d |
1832 | { "setattr", cmd_setattr, "setattr tag attr..." }, |
1833 | { "comment", cmd_comment, "comment tag [comment]" }, |
1834 | { "lock", cmd_lock, "lock qtag" }, |
1835 | { "unlock", cmd_unlock, "unlock qtag" }, |
ce70ec47 |
1836 | { "list", cmd_list, "list [-uqv] [-f filter] [tag...]", "\ |
1837 | Options:\n\ |
1838 | \n\ |
1839 | -u, --utc Display expiry times etc. in UTC, not local time.\n\ |
1840 | -q, --quiet Show less information.\n\ |
1841 | -v, --verbose Show more information.\n\ |
1842 | " }, |
1843 | { "fingerprint", cmd_finger, "fingerprint [-f filter] [tag...]", "\ |
1844 | Options:\n\ |
1845 | \n\ |
1846 | -f, --filter=FILT Only hash key components matching FILT.\n\ |
981bf127 |
1847 | -a, --algorithm=HASH Use the named HASH algorithm.\n\ |
ce70ec47 |
1848 | " }, |
d03ab969 |
1849 | { "tidy", cmd_tidy, "tidy" }, |
ce70ec47 |
1850 | { "extract", cmd_extract, "extract [-f filter] file [tag...]", "\ |
1851 | Options:\n\ |
1852 | \n\ |
1853 | -f, --filter=FILT Only extract key components matching FILT.\n\ |
1854 | " }, |
252c122d |
1855 | { "merge", cmd_merge, "merge file" }, |
d03ab969 |
1856 | { 0, 0, 0 } |
1857 | }; |
1858 | |
1859 | typedef struct cmd cmd; |
1860 | |
1861 | /*----- Main code ---------------------------------------------------------*/ |
1862 | |
ce70ec47 |
1863 | /* --- @findcmd@ --- * |
1864 | * |
1865 | * Arguments: @const char *name@ = a command name |
1866 | * |
1867 | * Returns: Pointer to the command structure. |
1868 | * |
1869 | * Use: Looks up a command by name. If the command isn't found, an |
1870 | * error is reported and the program is terminated. |
1871 | */ |
1872 | |
1873 | static cmd *findcmd(const char *name) |
1874 | { |
1875 | cmd *c, *chosen = 0; |
1876 | size_t sz = strlen(name); |
1877 | |
1878 | for (c = cmds; c->name; c++) { |
1879 | if (strncmp(name, c->name, sz) == 0) { |
1880 | if (c->name[sz] == 0) { |
1881 | chosen = c; |
1882 | break; |
1883 | } else if (chosen) |
1884 | die(EXIT_FAILURE, "ambiguous command name `%s'", name); |
1885 | else |
1886 | chosen = c; |
1887 | } |
1888 | } |
1889 | if (!chosen) |
1890 | die(EXIT_FAILURE, "unknown command name `%s'", name); |
1891 | return (chosen); |
1892 | } |
1893 | |
d03ab969 |
1894 | /* --- Helpful GNUy functions --- */ |
1895 | |
1896 | void usage(FILE *fp) |
1897 | { |
99dde2f4 |
1898 | pquis(fp, "Usage: $ [-k keyring] command [args]\n"); |
d03ab969 |
1899 | } |
1900 | |
1901 | void version(FILE *fp) |
1902 | { |
052b36d0 |
1903 | pquis(fp, "$, Catacomb version " VERSION "\n"); |
d03ab969 |
1904 | } |
1905 | |
ce70ec47 |
1906 | void help(FILE *fp, char **argv) |
d03ab969 |
1907 | { |
1908 | cmd *c; |
ce70ec47 |
1909 | |
d03ab969 |
1910 | version(fp); |
1911 | fputc('\n', fp); |
ce70ec47 |
1912 | if (*argv) { |
1913 | c = findcmd(*argv); |
99dde2f4 |
1914 | fprintf(fp, "Usage: %s [-k keyring] %s\n", QUIS, c->usage); |
ce70ec47 |
1915 | if (c->help) { |
1916 | fputc('\n', fp); |
1917 | fputs(c->help, fp); |
1918 | } |
1919 | } else { |
ce70ec47 |
1920 | usage(fp); |
1921 | fputs("\n\ |
d03ab969 |
1922 | Performs various simple key management operations. Command line options\n\ |
1923 | recognized are:\n\ |
1924 | \n\ |
ce70ec47 |
1925 | -h, --help [COMMAND] Display this help text (or help for COMMAND).\n\ |
d03ab969 |
1926 | -v, --version Display version number.\n\ |
1927 | -u, --usage Display short usage summary.\n\ |
1928 | \n\ |
1929 | -k, --keyring=FILE Read and write keys in FILE.\n\ |
052b36d0 |
1930 | -i, --id=TAG Use key TAG for random number generator.\n\ |
1931 | -t, --type=TYPE Use key TYPE for random number generator.\n\ |
d03ab969 |
1932 | \n\ |
1933 | The following commands are understood:\n\n", |
ce70ec47 |
1934 | fp); |
1935 | for (c = cmds; c->name; c++) |
1936 | fprintf(fp, "%s\n", c->usage); |
1937 | } |
d03ab969 |
1938 | } |
1939 | |
1940 | /* --- @main@ --- * |
1941 | * |
1942 | * Arguments: @int argc@ = number of command line arguments |
1943 | * @char *argv[]@ = array of command line arguments |
1944 | * |
1945 | * Returns: Nonzero on failure. |
1946 | * |
1947 | * Use: Main program. Performs simple key management functions. |
1948 | */ |
1949 | |
1950 | int main(int argc, char *argv[]) |
1951 | { |
1952 | unsigned f = 0; |
1953 | |
16efd15b |
1954 | #define f_bogus 1u |
d03ab969 |
1955 | |
1956 | /* --- Initialization --- */ |
1957 | |
1958 | ego(argv[0]); |
1959 | sub_init(); |
1960 | |
1961 | /* --- Parse command line options --- */ |
1962 | |
1963 | for (;;) { |
1964 | static struct option opt[] = { |
1965 | |
1966 | /* --- Standard GNUy help options --- */ |
1967 | |
1968 | { "help", 0, 0, 'h' }, |
1969 | { "version", 0, 0, 'v' }, |
1970 | { "usage", 0, 0, 'u' }, |
1971 | |
1972 | /* --- Real live useful options --- */ |
1973 | |
1974 | { "keyring", OPTF_ARGREQ, 0, 'k' }, |
1975 | |
1976 | /* --- Magic terminator --- */ |
1977 | |
1978 | { 0, 0, 0, 0 } |
1979 | }; |
99dde2f4 |
1980 | int i = mdwopt(argc, argv, "+hvu k:", opt, 0, 0, 0); |
d03ab969 |
1981 | |
1982 | if (i < 0) |
1983 | break; |
1984 | switch (i) { |
1985 | |
1986 | /* --- GNU help options --- */ |
ce70ec47 |
1987 | |
d03ab969 |
1988 | case 'h': |
ce70ec47 |
1989 | help(stdout, argv + optind); |
d03ab969 |
1990 | exit(0); |
1991 | case 'v': |
1992 | version(stdout); |
1993 | exit(0); |
1994 | case 'u': |
1995 | usage(stdout); |
1996 | exit(0); |
1997 | |
1998 | /* --- Real useful options --- */ |
1999 | |
2000 | case 'k': |
2001 | keyfile = optarg; |
2002 | break; |
2003 | |
2004 | /* --- Bogosity --- */ |
2005 | |
2006 | default: |
2007 | f |= f_bogus; |
2008 | break; |
2009 | } |
2010 | } |
2011 | |
2012 | /* --- Complain about excessive bogons --- */ |
2013 | |
2014 | if (f & f_bogus || optind == argc) { |
2015 | usage(stderr); |
2016 | exit(1); |
2017 | } |
2018 | |
052b36d0 |
2019 | /* --- Initialize the Catacomb random number generator --- */ |
2020 | |
052b36d0 |
2021 | rand_noisesrc(RAND_GLOBAL, &noise_source); |
9219a5d6 |
2022 | rand_seed(RAND_GLOBAL, 160); |
052b36d0 |
2023 | |
d03ab969 |
2024 | /* --- Dispatch to appropriate command handler --- */ |
2025 | |
2026 | argc -= optind; |
2027 | argv += optind; |
2028 | optind = 0; |
ce70ec47 |
2029 | return (findcmd(argv[0])->cmd(argc, argv)); |
d03ab969 |
2030 | } |
2031 | |
2032 | /*----- That's all, folks -------------------------------------------------*/ |