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[netbsd-mini2440.git] / external / bsd / bind / dist / bin / dnssec / dnssec-keygen.c
blob6a0deb6b98ce258d2acda41bba99c90affbdf943
1 /* $NetBSD: dnssec-keygen.c,v 1.1.1.3 2009/12/26 22:18:59 christos Exp $ */
2
3 /*
4 * Portions Copyright (C) 2004-2009 Internet Systems Consortium, Inc. ("ISC")
5 * Portions Copyright (C) 1999-2003 Internet Software Consortium.
6 *
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC AND NETWORK ASSOCIATES DISCLAIMS
12 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
13 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE
14 * FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
17 * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 *
19 * Portions Copyright (C) 1995-2000 by Network Associates, Inc.
20 *
21 * Permission to use, copy, modify, and/or distribute this software for any
22 * purpose with or without fee is hereby granted, provided that the above
23 * copyright notice and this permission notice appear in all copies.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC AND NETWORK ASSOCIATES DISCLAIMS
26 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
27 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE
28 * FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
29 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
30 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
31 * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
32 */
33
34 /* Id: dnssec-keygen.c,v 1.108 2009/11/25 22:58:48 marka Exp */
35
36 /*! \file */
37
38 #include <config.h>
39
40 #include <ctype.h>
41 #include <stdlib.h>
42 #include <unistd.h>
43
44 #include <isc/buffer.h>
45 #include <isc/commandline.h>
46 #include <isc/entropy.h>
47 #include <isc/mem.h>
48 #include <isc/region.h>
49 #include <isc/string.h>
50 #include <isc/util.h>
51
52 #include <dns/fixedname.h>
53 #include <dns/keyvalues.h>
54 #include <dns/log.h>
55 #include <dns/name.h>
56 #include <dns/rdataclass.h>
57 #include <dns/result.h>
58 #include <dns/secalg.h>
59
60 #include <dst/dst.h>
61
62 #include "dnssectool.h"
63
64 #define MAX_RSA 4096 /* should be long enough... */
65
66 const char *program = "dnssec-keygen";
67 int verbose;
68
69 #define DEFAULT_ALGORITHM "RSASHA1"
70 #define DEFAULT_NSEC3_ALGORITHM "NSEC3RSASHA1"
71
72 static isc_boolean_t
73 dsa_size_ok(int size) {
74 return (ISC_TF(size >= 512 && size <= 1024 && size % 64 == 0));
75 }
76
77 ISC_PLATFORM_NORETURN_PRE static void
78 usage(void) ISC_PLATFORM_NORETURN_POST;
79
80 static void progress(int p);
81
82 static void
83 usage(void) {
84 fprintf(stderr, "Usage:\n");
85 fprintf(stderr, " %s [options] name\n\n", program);
86 fprintf(stderr, "Version: %s\n", VERSION);
87 fprintf(stderr, " name: owner of the key\n");
88 fprintf(stderr, "Options:\n");
89 fprintf(stderr, " -K <directory>: write keys into directory\n");
90 fprintf(stderr, " -a <algorithm>:\n");
91 fprintf(stderr, " RSA | RSAMD5 | DSA | RSASHA1 | NSEC3RSASHA1"
92 " | NSEC3DSA |\n");
93 fprintf(stderr, " RSASHA256 | RSASHA512 |\n");
94 fprintf(stderr, " DH | HMAC-MD5 | HMAC-SHA1 | HMAC-SHA224 | "
95 "HMAC-SHA256 | \n");
96 fprintf(stderr, " HMAC-SHA384 | HMAC-SHA512\n");
97 fprintf(stderr, " (default: RSASHA1, or "
98 "NSEC3RSASHA1 if using -3)\n");
99 fprintf(stderr, " -3: use NSEC3-capable algorithm\n");
100 fprintf(stderr, " -b <key size in bits>:\n");
101 fprintf(stderr, " RSAMD5:\t[512..%d]\n", MAX_RSA);
102 fprintf(stderr, " RSASHA1:\t[512..%d]\n", MAX_RSA);
103 fprintf(stderr, " NSEC3RSASHA1:\t[512..%d]\n", MAX_RSA);
104 fprintf(stderr, " RSASHA256:\t[512..%d]\n", MAX_RSA);
105 fprintf(stderr, " RSASHA512:\t[1024..%d]\n", MAX_RSA);
106 fprintf(stderr, " DH:\t\t[128..4096]\n");
107 fprintf(stderr, " DSA:\t\t[512..1024] and divisible by 64\n");
108 fprintf(stderr, " NSEC3DSA:\t[512..1024] and divisible "
109 "by 64\n");
110 fprintf(stderr, " HMAC-MD5:\t[1..512]\n");
111 fprintf(stderr, " HMAC-SHA1:\t[1..160]\n");
112 fprintf(stderr, " HMAC-SHA224:\t[1..224]\n");
113 fprintf(stderr, " HMAC-SHA256:\t[1..256]\n");
114 fprintf(stderr, " HMAC-SHA384:\t[1..384]\n");
115 fprintf(stderr, " HMAC-SHA512:\t[1..512]\n");
116 fprintf(stderr, " (if using the default algorithm, key size\n"
117 " defaults to 2048 for KSK, or 1024 for all "
118 "others)\n");
119 fprintf(stderr, " -n <nametype>: ZONE | HOST | ENTITY | "
120 "USER | OTHER\n");
121 fprintf(stderr, " (DNSKEY generation defaults to ZONE)\n");
122 fprintf(stderr, " -c <class>: (default: IN)\n");
123 fprintf(stderr, " -d <digest bits> (0 => max, default)\n");
124 #ifdef USE_PKCS11
125 fprintf(stderr, " -E <engine name> (default \"pkcs11\")\n");
126 #else
127 fprintf(stderr, " -E <engine name>\n");
128 #endif
129 fprintf(stderr, " -e: use large exponent (RSAMD5/RSASHA1 only)\n");
130 fprintf(stderr, " -f <keyflag>: KSK | REVOKE\n");
131 fprintf(stderr, " -g <generator>: use specified generator "
132 "(DH only)\n");
133 fprintf(stderr, " -p <protocol>: (default: 3 [dnssec])\n");
134 fprintf(stderr, " -s <strength>: strength value this key signs DNS "
135 "records with (default: 0)\n");
136 fprintf(stderr, " -T <rrtype>: DNSKEY | KEY (default: DNSKEY; "
137 "use KEY for SIG(0))\n");
138 fprintf(stderr, " -t <type>: "
139 "AUTHCONF | NOAUTHCONF | NOAUTH | NOCONF "
140 "(default: AUTHCONF)\n");
141 fprintf(stderr, " -r <randomdev>: a file containing random data\n");
142
143 fprintf(stderr, " -h: print usage and exit\n");
144 fprintf(stderr, " -m <memory debugging mode>:\n");
145 fprintf(stderr, " usage | trace | record | size | mctx\n");
146 fprintf(stderr, " -v <level>: set verbosity level (0 - 10)\n");
147 fprintf(stderr, "Date options:\n");
148 fprintf(stderr, " -P date/[+-]offset: set key publication date "
149 "(default: now)\n");
150 fprintf(stderr, " -A date/[+-]offset: set key activation date "
151 "(default: now)\n");
152 fprintf(stderr, " -R date/[+-]offset: set key revocation date\n");
153 fprintf(stderr, " -I date/[+-]offset: set key inactivation date\n");
154 fprintf(stderr, " -D date/[+-]offset: set key deletion date\n");
155 fprintf(stderr, " -G: generate key only; do not set -P or -A\n");
156 fprintf(stderr, " -C: generate a backward-compatible key, omitting "
157 "all dates\n");
158 fprintf(stderr, "Output:\n");
159 fprintf(stderr, " K<name>+<alg>+<id>.key, "
160 "K<name>+<alg>+<id>.private\n");
161
162 exit (-1);
163 }
164
165 static void
166 progress(int p)
167 {
168 char c = '*';
169
170 switch (p) {
171 case 0:
172 c = '.';
173 break;
174 case 1:
175 c = '+';
176 break;
177 case 2:
178 c = '*';
179 break;
180 case 3:
181 c = ' ';
182 break;
183 default:
184 break;
185 }
186 (void) putc(c, stderr);
187 (void) fflush(stderr);
188 }
189
190 int
191 main(int argc, char **argv) {
192 char *algname = NULL, *nametype = NULL, *type = NULL;
193 char *classname = NULL;
194 char *endp;
195 dst_key_t *key = NULL, *oldkey;
196 dns_fixedname_t fname;
197 dns_name_t *name;
198 isc_uint16_t flags = 0, kskflag = 0, revflag = 0;
199 dns_secalg_t alg;
200 isc_boolean_t conflict = ISC_FALSE, null_key = ISC_FALSE;
201 isc_boolean_t oldstyle = ISC_FALSE;
202 isc_mem_t *mctx = NULL;
203 int ch, rsa_exp = 0, generator = 0, param = 0;
204 int protocol = -1, size = -1, signatory = 0;
205 isc_result_t ret;
206 isc_textregion_t r;
207 char filename[255];
208 const char *directory = NULL;
209 isc_buffer_t buf;
210 isc_log_t *log = NULL;
211 isc_entropy_t *ectx = NULL;
212 #ifdef USE_PKCS11
213 const char *engine = "pkcs11";
214 #else
215 const char *engine = NULL;
216 #endif
217 dns_rdataclass_t rdclass;
218 int options = DST_TYPE_PRIVATE | DST_TYPE_PUBLIC;
219 int dbits = 0;
220 isc_boolean_t use_default = ISC_FALSE, use_nsec3 = ISC_FALSE;
221 isc_stdtime_t publish = 0, activate = 0, revoke = 0;
222 isc_stdtime_t inactive = 0, delete = 0;
223 isc_stdtime_t now;
224 isc_boolean_t setpub = ISC_FALSE, setact = ISC_FALSE;
225 isc_boolean_t setrev = ISC_FALSE, setinact = ISC_FALSE;
226 isc_boolean_t setdel = ISC_FALSE;
227 isc_boolean_t unsetpub = ISC_FALSE, unsetact = ISC_FALSE;
228 isc_boolean_t unsetrev = ISC_FALSE, unsetinact = ISC_FALSE;
229 isc_boolean_t unsetdel = ISC_FALSE;
230 isc_boolean_t genonly = ISC_FALSE;
231 isc_boolean_t quiet = ISC_FALSE;
232 isc_boolean_t show_progress = ISC_FALSE;
233 unsigned char c;
234
235 if (argc == 1)
236 usage();
237
238 dns_result_register();
239
240 isc_commandline_errprint = ISC_FALSE;
241
242 /*
243 * Process memory debugging argument first.
244 */
245 #define CMDLINE_FLAGS "3a:b:Cc:d:E:eFf:g:K:km:n:p:qr:s:T:t:v:hGP:A:R:I:D:"
246 while ((ch = isc_commandline_parse(argc, argv, CMDLINE_FLAGS)) != -1) {
247 switch (ch) {
248 case 'm':
249 if (strcasecmp(isc_commandline_argument, "record") == 0)
250 isc_mem_debugging |= ISC_MEM_DEBUGRECORD;
251 if (strcasecmp(isc_commandline_argument, "trace") == 0)
252 isc_mem_debugging |= ISC_MEM_DEBUGTRACE;
253 if (strcasecmp(isc_commandline_argument, "usage") == 0)
254 isc_mem_debugging |= ISC_MEM_DEBUGUSAGE;
255 if (strcasecmp(isc_commandline_argument, "size") == 0)
256 isc_mem_debugging |= ISC_MEM_DEBUGSIZE;
257 if (strcasecmp(isc_commandline_argument, "mctx") == 0)
258 isc_mem_debugging |= ISC_MEM_DEBUGCTX;
259 break;
260 default:
261 break;
262 }
263 }
264 isc_commandline_reset = ISC_TRUE;
265
266 RUNTIME_CHECK(isc_mem_create(0, 0, &mctx) == ISC_R_SUCCESS);
267
268 isc_stdtime_get(&now);
269
270 while ((ch = isc_commandline_parse(argc, argv, CMDLINE_FLAGS)) != -1) {
271 switch (ch) {
272 case '3':
273 use_nsec3 = ISC_TRUE;
274 break;
275 case 'a':
276 algname = isc_commandline_argument;
277 break;
278 case 'b':
279 size = strtol(isc_commandline_argument, &endp, 10);
280 if (*endp != '\0' || size < 0)
281 fatal("-b requires a non-negative number");
282 break;
283 case 'C':
284 oldstyle = ISC_TRUE;
285 break;
286 case 'c':
287 classname = isc_commandline_argument;
288 break;
289 case 'd':
290 dbits = strtol(isc_commandline_argument, &endp, 10);
291 if (*endp != '\0' || dbits < 0)
292 fatal("-d requires a non-negative number");
293 break;
294 case 'E':
295 engine = isc_commandline_argument;
296 break;
297 case 'e':
298 rsa_exp = 1;
299 break;
300 case 'f':
301 c = (unsigned char)(isc_commandline_argument[0]);
302 if (toupper(c) == 'K')
303 kskflag = DNS_KEYFLAG_KSK;
304 else if (toupper(c) == 'R')
305 revflag = DNS_KEYFLAG_REVOKE;
306 else
307 fatal("unknown flag '%s'",
308 isc_commandline_argument);
309 break;
310 case 'g':
311 generator = strtol(isc_commandline_argument,
312 &endp, 10);
313 if (*endp != '\0' || generator <= 0)
314 fatal("-g requires a positive number");
315 break;
316 case 'K':
317 directory = isc_commandline_argument;
318 ret = try_dir(directory);
319 if (ret != ISC_R_SUCCESS)
320 fatal("cannot open directory %s: %s",
321 directory, isc_result_totext(ret));
322 break;
323 case 'k':
324 fatal("The -k option has been deprecated.\n"
325 "To generate a key-signing key, use -f KSK.\n"
326 "To generate a key with TYPE=KEY, use -T KEY.\n");
327 break;
328 case 'n':
329 nametype = isc_commandline_argument;
330 break;
331 case 'm':
332 break;
333 case 'p':
334 protocol = strtol(isc_commandline_argument, &endp, 10);
335 if (*endp != '\0' || protocol < 0 || protocol > 255)
336 fatal("-p must be followed by a number "
337 "[0..255]");
338 break;
339 case 'q':
340 quiet = ISC_TRUE;
341 break;
342 case 'r':
343 setup_entropy(mctx, isc_commandline_argument, &ectx);
344 break;
345 case 's':
346 signatory = strtol(isc_commandline_argument,
347 &endp, 10);
348 if (*endp != '\0' || signatory < 0 || signatory > 15)
349 fatal("-s must be followed by a number "
350 "[0..15]");
351 break;
352 case 'T':
353 if (strcasecmp(isc_commandline_argument, "KEY") == 0)
354 options |= DST_TYPE_KEY;
355 else if (strcasecmp(isc_commandline_argument,
356 "DNSKEY") == 0)
357 /* default behavior */
358 ;
359 else
360 fatal("unknown type '%s'",
361 isc_commandline_argument);
362 break;
363 case 't':
364 type = isc_commandline_argument;
365 break;
366 case 'v':
367 endp = NULL;
368 verbose = strtol(isc_commandline_argument, &endp, 0);
369 if (*endp != '\0')
370 fatal("-v must be followed by a number");
371 break;
372 case 'z':
373 /* already the default */
374 break;
375 case 'G':
376 genonly = ISC_TRUE;
377 break;
378 case 'P':
379 if (setpub || unsetpub)
380 fatal("-P specified more than once");
381
382 if (strcasecmp(isc_commandline_argument, "none")) {
383 setpub = ISC_TRUE;
384 publish = strtotime(isc_commandline_argument,
385 now, now);
386 } else {
387 unsetpub = ISC_TRUE;
388 }
389 break;
390 case 'A':
391 if (setact || unsetact)
392 fatal("-A specified more than once");
393
394 if (strcasecmp(isc_commandline_argument, "none")) {
395 setact = ISC_TRUE;
396 activate = strtotime(isc_commandline_argument,
397 now, now);
398 } else {
399 unsetact = ISC_TRUE;
400 }
401 break;
402 case 'R':
403 if (setrev || unsetrev)
404 fatal("-R specified more than once");
405
406 if (strcasecmp(isc_commandline_argument, "none")) {
407 setrev = ISC_TRUE;
408 revoke = strtotime(isc_commandline_argument,
409 now, now);
410 } else {
411 unsetrev = ISC_TRUE;
412 }
413 break;
414 case 'I':
415 if (setinact || unsetinact)
416 fatal("-I specified more than once");
417
418 if (strcasecmp(isc_commandline_argument, "none")) {
419 setinact = ISC_TRUE;
420 inactive = strtotime(isc_commandline_argument,
421 now, now);
422 } else {
423 unsetinact = ISC_TRUE;
424 }
425 break;
426 case 'D':
427 if (setdel || unsetdel)
428 fatal("-D specified more than once");
429
430 if (strcasecmp(isc_commandline_argument, "none")) {
431 setdel = ISC_TRUE;
432 delete = strtotime(isc_commandline_argument,
433 now, now);
434 } else {
435 unsetdel = ISC_TRUE;
436 }
437 break;
438 case 'F':
439 /* Reserved for FIPS mode */
440 /* FALLTHROUGH */
441 case '?':
442 if (isc_commandline_option != '?')
443 fprintf(stderr, "%s: invalid argument -%c\n",
444 program, isc_commandline_option);
445 /* FALLTHROUGH */
446 case 'h':
447 usage();
448
449 default:
450 fprintf(stderr, "%s: unhandled option -%c\n",
451 program, isc_commandline_option);
452 exit(1);
453 }
454 }
455
456 if (!isatty(0))
457 quiet = ISC_TRUE;
458
459 if (ectx == NULL)
460 setup_entropy(mctx, NULL, &ectx);
461 ret = dst_lib_init2(mctx, ectx, engine,
462 ISC_ENTROPY_BLOCKING | ISC_ENTROPY_GOODONLY);
463 if (ret != ISC_R_SUCCESS)
464 fatal("could not initialize dst: %s",
465 isc_result_totext(ret));
466
467 setup_logging(verbose, mctx, &log);
468
469 if (argc < isc_commandline_index + 1)
470 fatal("the key name was not specified");
471 if (argc > isc_commandline_index + 1)
472 fatal("extraneous arguments");
473
474 if (algname == NULL) {
475 use_default = ISC_TRUE;
476 if (use_nsec3)
477 algname = strdup(DEFAULT_NSEC3_ALGORITHM);
478 else
479 algname = strdup(DEFAULT_ALGORITHM);
480 if (verbose > 0)
481 fprintf(stderr, "no algorithm specified; "
482 "defaulting to %s\n", algname);
483 }
484
485 if (strcasecmp(algname, "RSA") == 0) {
486 fprintf(stderr, "The use of RSA (RSAMD5) is not recommended.\n"
487 "If you still wish to use RSA (RSAMD5) please "
488 "specify \"-a RSAMD5\"\n");
489 return (1);
490 } else if (strcasecmp(algname, "HMAC-MD5") == 0) {
491 options |= DST_TYPE_KEY;
492 alg = DST_ALG_HMACMD5;
493 } else if (strcasecmp(algname, "HMAC-SHA1") == 0) {
494 options |= DST_TYPE_KEY;
495 alg = DST_ALG_HMACSHA1;
496 } else if (strcasecmp(algname, "HMAC-SHA224") == 0) {
497 options |= DST_TYPE_KEY;
498 alg = DST_ALG_HMACSHA224;
499 } else if (strcasecmp(algname, "HMAC-SHA256") == 0) {
500 options |= DST_TYPE_KEY;
501 alg = DST_ALG_HMACSHA256;
502 } else if (strcasecmp(algname, "HMAC-SHA384") == 0) {
503 options |= DST_TYPE_KEY;
504 alg = DST_ALG_HMACSHA384;
505 } else if (strcasecmp(algname, "HMAC-SHA512") == 0) {
506 options |= DST_TYPE_KEY;
507 alg = DST_ALG_HMACSHA512;
508 } else {
509 r.base = algname;
510 r.length = strlen(algname);
511 ret = dns_secalg_fromtext(&alg, &r);
512 if (ret != ISC_R_SUCCESS)
513 fatal("unknown algorithm %s", algname);
514 if (alg == DST_ALG_DH)
515 options |= DST_TYPE_KEY;
516 }
517
518 if (use_nsec3 &&
519 alg != DST_ALG_NSEC3DSA && alg != DST_ALG_NSEC3RSASHA1 &&
520 alg != DST_ALG_RSASHA256 && alg!= DST_ALG_RSASHA512) {
521 fatal("%s is incompatible with NSEC3; "
522 "do not use the -3 option", algname);
523 }
524
525 if (type != NULL && (options & DST_TYPE_KEY) != 0) {
526 if (strcasecmp(type, "NOAUTH") == 0)
527 flags |= DNS_KEYTYPE_NOAUTH;
528 else if (strcasecmp(type, "NOCONF") == 0)
529 flags |= DNS_KEYTYPE_NOCONF;
530 else if (strcasecmp(type, "NOAUTHCONF") == 0) {
531 flags |= (DNS_KEYTYPE_NOAUTH | DNS_KEYTYPE_NOCONF);
532 if (size < 0)
533 size = 0;
534 }
535 else if (strcasecmp(type, "AUTHCONF") == 0)
536 /* nothing */;
537 else
538 fatal("invalid type %s", type);
539 }
540
541 if (size < 0) {
542 if (use_default) {
543 size = ((kskflag & DNS_KEYFLAG_KSK) != 0) ? 2048 : 1024;
544 if (verbose > 0)
545 fprintf(stderr, "key size not specified; "
546 "defaulting to %d\n", size);
547 } else {
548 fatal("key size not specified (-b option)");
549 }
550 }
551
552 switch (alg) {
553 case DNS_KEYALG_RSAMD5:
554 case DNS_KEYALG_RSASHA1:
555 case DNS_KEYALG_NSEC3RSASHA1:
556 case DNS_KEYALG_RSASHA256:
557 if (size != 0 && (size < 512 || size > MAX_RSA))
558 fatal("RSA key size %d out of range", size);
559 break;
560 case DNS_KEYALG_RSASHA512:
561 if (size != 0 && (size < 1024 || size > MAX_RSA))
562 fatal("RSA key size %d out of range", size);
563 break;
564 case DNS_KEYALG_DH:
565 if (size != 0 && (size < 128 || size > 4096))
566 fatal("DH key size %d out of range", size);
567 break;
568 case DNS_KEYALG_DSA:
569 case DNS_KEYALG_NSEC3DSA:
570 if (size != 0 && !dsa_size_ok(size))
571 fatal("invalid DSS key size: %d", size);
572 break;
573 case DST_ALG_HMACMD5:
574 if (size < 1 || size > 512)
575 fatal("HMAC-MD5 key size %d out of range", size);
576 if (dbits != 0 && (dbits < 80 || dbits > 128))
577 fatal("HMAC-MD5 digest bits %d out of range", dbits);
578 if ((dbits % 8) != 0)
579 fatal("HMAC-MD5 digest bits %d not divisible by 8",
580 dbits);
581 break;
582 case DST_ALG_HMACSHA1:
583 if (size < 1 || size > 160)
584 fatal("HMAC-SHA1 key size %d out of range", size);
585 if (dbits != 0 && (dbits < 80 || dbits > 160))
586 fatal("HMAC-SHA1 digest bits %d out of range", dbits);
587 if ((dbits % 8) != 0)
588 fatal("HMAC-SHA1 digest bits %d not divisible by 8",
589 dbits);
590 break;
591 case DST_ALG_HMACSHA224:
592 if (size < 1 || size > 224)
593 fatal("HMAC-SHA224 key size %d out of range", size);
594 if (dbits != 0 && (dbits < 112 || dbits > 224))
595 fatal("HMAC-SHA224 digest bits %d out of range", dbits);
596 if ((dbits % 8) != 0)
597 fatal("HMAC-SHA224 digest bits %d not divisible by 8",
598 dbits);
599 break;
600 case DST_ALG_HMACSHA256:
601 if (size < 1 || size > 256)
602 fatal("HMAC-SHA256 key size %d out of range", size);
603 if (dbits != 0 && (dbits < 128 || dbits > 256))
604 fatal("HMAC-SHA256 digest bits %d out of range", dbits);
605 if ((dbits % 8) != 0)
606 fatal("HMAC-SHA256 digest bits %d not divisible by 8",
607 dbits);
608 break;
609 case DST_ALG_HMACSHA384:
610 if (size < 1 || size > 384)
611 fatal("HMAC-384 key size %d out of range", size);
612 if (dbits != 0 && (dbits < 192 || dbits > 384))
613 fatal("HMAC-SHA384 digest bits %d out of range", dbits);
614 if ((dbits % 8) != 0)
615 fatal("HMAC-SHA384 digest bits %d not divisible by 8",
616 dbits);
617 break;
618 case DST_ALG_HMACSHA512:
619 if (size < 1 || size > 512)
620 fatal("HMAC-SHA512 key size %d out of range", size);
621 if (dbits != 0 && (dbits < 256 || dbits > 512))
622 fatal("HMAC-SHA512 digest bits %d out of range", dbits);
623 if ((dbits % 8) != 0)
624 fatal("HMAC-SHA512 digest bits %d not divisible by 8",
625 dbits);
626 break;
627 }
628
629 if (!(alg == DNS_KEYALG_RSAMD5 || alg == DNS_KEYALG_RSASHA1 ||
630 alg == DNS_KEYALG_NSEC3RSASHA1 || alg == DNS_KEYALG_RSASHA256 ||
631 alg == DNS_KEYALG_RSASHA512) && rsa_exp != 0)
632 fatal("specified RSA exponent for a non-RSA key");
633
634 if (alg != DNS_KEYALG_DH && generator != 0)
635 fatal("specified DH generator for a non-DH key");
636
637 if (nametype == NULL) {
638 if ((options & DST_TYPE_KEY) != 0) /* KEY / HMAC */
639 fatal("no nametype specified");
640 flags |= DNS_KEYOWNER_ZONE; /* DNSKEY */
641 } else if (strcasecmp(nametype, "zone") == 0)
642 flags |= DNS_KEYOWNER_ZONE;
643 else if ((options & DST_TYPE_KEY) != 0) { /* KEY / HMAC */
644 if (strcasecmp(nametype, "host") == 0 ||
645 strcasecmp(nametype, "entity") == 0)
646 flags |= DNS_KEYOWNER_ENTITY;
647 else if (strcasecmp(nametype, "user") == 0)
648 flags |= DNS_KEYOWNER_USER;
649 else
650 fatal("invalid KEY nametype %s", nametype);
651 } else if (strcasecmp(nametype, "other") != 0) /* DNSKEY */
652 fatal("invalid DNSKEY nametype %s", nametype);
653
654 rdclass = strtoclass(classname);
655
656 if (directory == NULL)
657 directory = ".";
658
659 if ((options & DST_TYPE_KEY) != 0) /* KEY / HMAC */
660 flags |= signatory;
661 else if ((flags & DNS_KEYOWNER_ZONE) != 0) { /* DNSKEY */
662 flags |= kskflag;
663 flags |= revflag;
664 }
665
666 if (protocol == -1)
667 protocol = DNS_KEYPROTO_DNSSEC;
668 else if ((options & DST_TYPE_KEY) == 0 &&
669 protocol != DNS_KEYPROTO_DNSSEC)
670 fatal("invalid DNSKEY protocol: %d", protocol);
671
672 if ((flags & DNS_KEYFLAG_TYPEMASK) == DNS_KEYTYPE_NOKEY) {
673 if (size > 0)
674 fatal("specified null key with non-zero size");
675 if ((flags & DNS_KEYFLAG_SIGNATORYMASK) != 0)
676 fatal("specified null key with signing authority");
677 }
678
679 if ((flags & DNS_KEYFLAG_OWNERMASK) == DNS_KEYOWNER_ZONE &&
680 (alg == DNS_KEYALG_DH || alg == DST_ALG_HMACMD5 ||
681 alg == DST_ALG_HMACSHA1 || alg == DST_ALG_HMACSHA224 ||
682 alg == DST_ALG_HMACSHA256 || alg == DST_ALG_HMACSHA384 ||
683 alg == DST_ALG_HMACSHA512))
684 fatal("a key with algorithm '%s' cannot be a zone key",
685 algname);
686
687 dns_fixedname_init(&fname);
688 name = dns_fixedname_name(&fname);
689 isc_buffer_init(&buf, argv[isc_commandline_index],
690 strlen(argv[isc_commandline_index]));
691 isc_buffer_add(&buf, strlen(argv[isc_commandline_index]));
692 ret = dns_name_fromtext(name, &buf, dns_rootname, 0, NULL);
693 if (ret != ISC_R_SUCCESS)
694 fatal("invalid key name %s: %s", argv[isc_commandline_index],
695 isc_result_totext(ret));
696
697 switch(alg) {
698 case DNS_KEYALG_RSAMD5:
699 case DNS_KEYALG_RSASHA1:
700 case DNS_KEYALG_NSEC3RSASHA1:
701 case DNS_KEYALG_RSASHA256:
702 case DNS_KEYALG_RSASHA512:
703 param = rsa_exp;
704 show_progress = ISC_TRUE;
705 break;
706
707 case DNS_KEYALG_DH:
708 param = generator;
709 break;
710
711 case DNS_KEYALG_DSA:
712 case DNS_KEYALG_NSEC3DSA:
713 show_progress = ISC_TRUE;
714 /* fall through */
715
716 case DST_ALG_HMACMD5:
717 case DST_ALG_HMACSHA1:
718 case DST_ALG_HMACSHA224:
719 case DST_ALG_HMACSHA256:
720 case DST_ALG_HMACSHA384:
721 case DST_ALG_HMACSHA512:
722 param = 0;
723 break;
724 }
725
726 if ((flags & DNS_KEYFLAG_TYPEMASK) == DNS_KEYTYPE_NOKEY)
727 null_key = ISC_TRUE;
728
729 isc_buffer_init(&buf, filename, sizeof(filename) - 1);
730
731 do {
732 conflict = ISC_FALSE;
733 oldkey = NULL;
734
735 if (!quiet && show_progress) {
736 fprintf(stderr, "Generating key pair.");
737 ret = dst_key_generate2(name, alg, size, param, flags,
738 protocol, rdclass, mctx, &key,
739 &progress);
740 putc('\n', stderr);
741 fflush(stderr);
742 } else {
743 ret = dst_key_generate2(name, alg, size, param, flags,
744 protocol, rdclass, mctx, &key,
745 NULL);
746 }
747
748 isc_entropy_stopcallbacksources(ectx);
749
750 if (ret != ISC_R_SUCCESS) {
751 char namestr[DNS_NAME_FORMATSIZE];
752 char algstr[DNS_SECALG_FORMATSIZE];
753 dns_name_format(name, namestr, sizeof(namestr));
754 dns_secalg_format(alg, algstr, sizeof(algstr));
755 fatal("failed to generate key %s/%s: %s\n",
756 namestr, algstr, isc_result_totext(ret));
757 /* NOTREACHED */
758 exit(-1);
759 }
760
761 dst_key_setbits(key, dbits);
762
763 /*
764 * Set key timing metadata (unless using -C)
765 *
766 * Publish and activation dates are set to "now" by default,
767 * but can be overridden. Creation date is always set to
768 * "now".
769 */
770 if (!oldstyle) {
771 dst_key_settime(key, DST_TIME_CREATED, now);
772
773 if (genonly && (setpub || setact))
774 fatal("cannot use -G together with "
775 "-P or -A options");
776
777 if (setpub)
778 dst_key_settime(key, DST_TIME_PUBLISH, publish);
779 else if (setact)
780 dst_key_settime(key, DST_TIME_PUBLISH,
781 activate);
782 else if (!genonly && !unsetpub)
783 dst_key_settime(key, DST_TIME_PUBLISH, now);
784
785 if (setact)
786 dst_key_settime(key, DST_TIME_ACTIVATE,
787 activate);
788 else if (!genonly && !unsetact)
789 dst_key_settime(key, DST_TIME_ACTIVATE, now);
790
791 if (setrev) {
792 if (kskflag == 0)
793 fprintf(stderr, "%s: warning: Key is "
794 "not flagged as a KSK, but -R "
795 "was used. Revoking a ZSK is "
796 "legal, but undefined.\n",
797 program);
798 dst_key_settime(key, DST_TIME_REVOKE, revoke);
799 }
800
801 if (setinact)
802 dst_key_settime(key, DST_TIME_INACTIVE,
803 inactive);
804
805 if (setdel)
806 dst_key_settime(key, DST_TIME_DELETE, delete);
807 } else {
808 if (setpub || setact || setrev || setinact ||
809 setdel || unsetpub || unsetact ||
810 unsetrev || unsetinact || unsetdel || genonly)
811 fatal("cannot use -C together with "
812 "-P, -A, -R, -I, -D, or -G options");
813 /*
814 * Compatibility mode: Private-key-format
815 * should be set to 1.2.
816 */
817 dst_key_setprivateformat(key, 1, 2);
818 }
819
820 /*
821 * Try to read a key with the same name, alg and id from disk.
822 * If there is one we must continue generating a different
823 * key unless we were asked to generate a null key, in which
824 * case we return failure.
825 */
826 ret = dst_key_fromfile(name, dst_key_id(key), alg,
827 DST_TYPE_PRIVATE, directory,
828 mctx, &oldkey);
829 /* do not overwrite an existing key */
830 if (ret == ISC_R_SUCCESS) {
831 dst_key_free(&oldkey);
832 conflict = ISC_TRUE;
833 if (null_key)
834 break;
835 }
836 if (conflict == ISC_TRUE) {
837 if (verbose > 0) {
838 isc_buffer_clear(&buf);
839 dst_key_buildfilename(key, 0, directory, &buf);
840 fprintf(stderr,
841 "%s: %s already exists, "
842 "generating a new key\n",
843 program, filename);
844 }
845 dst_key_free(&key);
846 }
847 } while (conflict == ISC_TRUE);
848
849 if (conflict)
850 fatal("cannot generate a null key when a key with id 0 "
851 "already exists");
852
853 ret = dst_key_tofile(key, options, directory);
854 if (ret != ISC_R_SUCCESS) {
855 char keystr[DST_KEY_FORMATSIZE];
856 dst_key_format(key, keystr, sizeof(keystr));
857 fatal("failed to write key %s: %s\n", keystr,
858 isc_result_totext(ret));
859 }
860
861 isc_buffer_clear(&buf);
862 ret = dst_key_buildfilename(key, 0, NULL, &buf);
863 printf("%s\n", filename);
864 dst_key_free(&key);
865
866 cleanup_logging(&log);
867 cleanup_entropy(&ectx);
868 dst_lib_destroy();
869 dns_name_destroy();
870 if (verbose > 10)
871 isc_mem_stats(mctx, stdout);
872 isc_mem_destroy(&mctx);
873
874 return (0);
875 }
NetBSD on the FriendlyARM MINI2440