contrib/bind-9.5.2/bin/dnssec/dnssec-keygen.c

   1 /*
   2  * Portions Copyright (C) 2004-2007  Internet Systems Consortium, Inc. ("ISC")
   3  * Portions Copyright (C) 1999-2003  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC AND NETWORK ASSOCIATES DISCLAIMS
  10  * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
  11  * WARRANTIES OF MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE
  12  * FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
  15  * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  *
  17  * Portions Copyright (C) 1995-2000 by Network Associates, Inc.
  18  *
  19  * Permission to use, copy, modify, and/or distribute this software for any
  20  * purpose with or without fee is hereby granted, provided that the above
  21  * copyright notice and this permission notice appear in all copies.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC AND NETWORK ASSOCIATES DISCLAIMS
  24  * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
  25  * WARRANTIES OF MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE
  26  * FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  27  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  28  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
  29  * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  30  */
  31
  32 /* $Id: dnssec-keygen.c,v 1.79 2007/08/28 07:20:42 tbox Exp $ */
  33
  34 /*! \file */
  35
  36 #include <config.h>
  37
  38 #include <stdlib.h>
  39
  40 #include <isc/buffer.h>
  41 #include <isc/commandline.h>
  42 #include <isc/entropy.h>
  43 #include <isc/mem.h>
  44 #include <isc/region.h>
  45 #include <isc/string.h>
  46 #include <isc/util.h>
  47
  48 #include <dns/fixedname.h>
  49 #include <dns/keyvalues.h>
  50 #include <dns/log.h>
  51 #include <dns/name.h>
  52 #include <dns/rdataclass.h>
  53 #include <dns/result.h>
  54 #include <dns/secalg.h>
  55
  56 #include <dst/dst.h>
  57
  58 #include "dnssectool.h"
  59
  60 #define MAX_RSA 4096 /* should be long enough... */
  61
  62 const char *program = "dnssec-keygen";
  63 int verbose;
  64
  65 static const char *algs = "RSA | RSAMD5 | DH | DSA | RSASHA1 | HMAC-MD5 |"
  66                           " HMAC-SHA1 | HMAC-SHA224 | HMAC-SHA256 | "
  67                           " HMAC-SHA384 | HMAC-SHA512";
  68
  69 static isc_boolean_t
  70 dsa_size_ok(int size) {
  71         return (ISC_TF(size >= 512 && size <= 1024 && size % 64 == 0));
  72 }
  73
  74 static void
  75 usage(void) {
  76         fprintf(stderr, "Usage:\n");
  77         fprintf(stderr, "    %s -a alg -b bits [-n type] [options] name\n\n",
  78                 program);
  79         fprintf(stderr, "Version: %s\n", VERSION);
  80         fprintf(stderr, "Required options:\n");
  81         fprintf(stderr, "    -a algorithm: %s\n", algs);
  82         fprintf(stderr, "    -b key size, in bits:\n");
  83         fprintf(stderr, "        RSAMD5:\t\t[512..%d]\n", MAX_RSA);
  84         fprintf(stderr, "        RSASHA1:\t\t[512..%d]\n", MAX_RSA);
  85         fprintf(stderr, "        DH:\t\t[128..4096]\n");
  86         fprintf(stderr, "        DSA:\t\t[512..1024] and divisible by 64\n");
  87         fprintf(stderr, "        HMAC-MD5:\t[1..512]\n");
  88         fprintf(stderr, "        HMAC-SHA1:\t[1..160]\n");
  89         fprintf(stderr, "        HMAC-SHA224:\t[1..224]\n");
  90         fprintf(stderr, "        HMAC-SHA256:\t[1..256]\n");
  91         fprintf(stderr, "        HMAC-SHA384:\t[1..384]\n");
  92         fprintf(stderr, "        HMAC-SHA512:\t[1..512]\n");
  93         fprintf(stderr, "    -n nametype: ZONE | HOST | ENTITY | USER | OTHER\n");
  94         fprintf(stderr, "        (DNSKEY generation defaults to ZONE\n");
  95         fprintf(stderr, "    name: owner of the key\n");
  96         fprintf(stderr, "Other options:\n");
  97         fprintf(stderr, "    -c <class> (default: IN)\n");
  98         fprintf(stderr, "    -d <digest bits> (0 => max, default)\n");
  99         fprintf(stderr, "    -e use large exponent (RSAMD5/RSASHA1 only)\n");
 100         fprintf(stderr, "    -f keyflag: KSK\n");
 101         fprintf(stderr, "    -g <generator> use specified generator "
 102                 "(DH only)\n");
 103         fprintf(stderr, "    -t <type>: "
 104                 "AUTHCONF | NOAUTHCONF | NOAUTH | NOCONF "
 105                 "(default: AUTHCONF)\n");
 106         fprintf(stderr, "    -p <protocol>: "
 107                "default: 3 [dnssec]\n");
 108         fprintf(stderr, "    -s <strength> strength value this key signs DNS "
 109                 "records with (default: 0)\n");
 110         fprintf(stderr, "    -r <randomdev>: a file containing random data\n");
 111         fprintf(stderr, "    -v <verbose level>\n");
 112         fprintf(stderr, "    -k : generate a TYPE=KEY key\n");
 113         fprintf(stderr, "Output:\n");
 114         fprintf(stderr, "     K<name>+<alg>+<id>.key, "
 115                 "K<name>+<alg>+<id>.private\n");
 116
 117         exit (-1);
 118 }
 119
 120 int
 121 main(int argc, char **argv) {
 122         char            *algname = NULL, *nametype = NULL, *type = NULL;
 123         char            *classname = NULL;
 124         char            *endp;
 125         dst_key_t       *key = NULL, *oldkey;
 126         dns_fixedname_t fname;
 127         dns_name_t      *name;
 128         isc_uint16_t    flags = 0, ksk = 0;
 129         dns_secalg_t    alg;
 130         isc_boolean_t   conflict = ISC_FALSE, null_key = ISC_FALSE;
 131         isc_mem_t       *mctx = NULL;
 132         int             ch, rsa_exp = 0, generator = 0, param = 0;
 133         int             protocol = -1, size = -1, signatory = 0;
 134         isc_result_t    ret;
 135         isc_textregion_t r;
 136         char            filename[255];
 137         isc_buffer_t    buf;
 138         isc_log_t       *log = NULL;
 139         isc_entropy_t   *ectx = NULL;
 140         dns_rdataclass_t rdclass;
 141         int             options = DST_TYPE_PRIVATE | DST_TYPE_PUBLIC;
 142         int             dbits = 0;
 143
 144         if (argc == 1)
 145                 usage();
 146
 147         RUNTIME_CHECK(isc_mem_create(0, 0, &mctx) == ISC_R_SUCCESS);
 148
 149         dns_result_register();
 150
 151         isc_commandline_errprint = ISC_FALSE;
 152
 153         while ((ch = isc_commandline_parse(argc, argv,
 154                                          "a:b:c:d:ef:g:kn:t:p:s:r:v:h")) != -1)
 155         {
 156             switch (ch) {
 157                 case 'a':
 158                         algname = isc_commandline_argument;
 159                         break;
 160                 case 'b':
 161                         size = strtol(isc_commandline_argument, &endp, 10);
 162                         if (*endp != '\0' || size < 0)
 163                                 fatal("-b requires a non-negative number");
 164                         break;
 165                 case 'c':
 166                         classname = isc_commandline_argument;
 167                         break;
 168                 case 'd':
 169                         dbits = strtol(isc_commandline_argument, &endp, 10);
 170                         if (*endp != '\0' || dbits < 0)
 171                                 fatal("-d requires a non-negative number");
 172                         break;
 173                 case 'e':
 174                         rsa_exp = 1;
 175                         break;
 176                 case 'f':
 177                         if (strcasecmp(isc_commandline_argument, "KSK") == 0)
 178                                 ksk = DNS_KEYFLAG_KSK;
 179                         else
 180                                 fatal("unknown flag '%s'",
 181                                       isc_commandline_argument);
 182                         break;
 183                 case 'g':
 184                         generator = strtol(isc_commandline_argument,
 185                                            &endp, 10);
 186                         if (*endp != '\0' || generator <= 0)
 187                                 fatal("-g requires a positive number");
 188                         break;
 189                 case 'k':
 190                         options |= DST_TYPE_KEY;
 191                         break;
 192                 case 'n':
 193                         nametype = isc_commandline_argument;
 194                         break;
 195                 case 't':
 196                         type = isc_commandline_argument;
 197                         break;
 198                 case 'p':
 199                         protocol = strtol(isc_commandline_argument, &endp, 10);
 200                         if (*endp != '\0' || protocol < 0 || protocol > 255)
 201                                 fatal("-p must be followed by a number "
 202                                       "[0..255]");
 203                         break;
 204                 case 's':
 205                         signatory = strtol(isc_commandline_argument,
 206                                            &endp, 10);
 207                         if (*endp != '\0' || signatory < 0 || signatory > 15)
 208                                 fatal("-s must be followed by a number "
 209                                       "[0..15]");
 210                         break;
 211                 case 'r':
 212                         setup_entropy(mctx, isc_commandline_argument, &ectx);
 213                         break;
 214                 case 'v':
 215                         endp = NULL;
 216                         verbose = strtol(isc_commandline_argument, &endp, 0);
 217                         if (*endp != '\0')
 218                                 fatal("-v must be followed by a number");
 219                         break;
 220
 221                 case '?':
 222                         if (isc_commandline_option != '?')
 223                                 fprintf(stderr, "%s: invalid argument -%c\n",
 224                                         program, isc_commandline_option);
 225                 case 'h':
 226                         usage();
 227
 228                 default:
 229                         fprintf(stderr, "%s: unhandled option -%c\n",
 230                                 program, isc_commandline_option);
 231                         exit(1);
 232                 }
 233         }
 234
 235         if (ectx == NULL)
 236                 setup_entropy(mctx, NULL, &ectx);
 237         ret = dst_lib_init(mctx, ectx,
 238                            ISC_ENTROPY_BLOCKING | ISC_ENTROPY_GOODONLY);
 239         if (ret != ISC_R_SUCCESS)
 240                 fatal("could not initialize dst");
 241
 242         setup_logging(verbose, mctx, &log);
 243
 244         if (argc < isc_commandline_index + 1)
 245                 fatal("the key name was not specified");
 246         if (argc > isc_commandline_index + 1)
 247                 fatal("extraneous arguments");
 248
 249         if (algname == NULL)
 250                 fatal("no algorithm was specified");
 251         if (strcasecmp(algname, "RSA") == 0) {
 252                 fprintf(stderr, "The use of RSA (RSAMD5) is not recommended.\n"
 253                                 "If you still wish to use RSA (RSAMD5) please "
 254                                 "specify \"-a RSAMD5\"\n");
 255                 return (1);
 256         } else if (strcasecmp(algname, "HMAC-MD5") == 0) {
 257                 options |= DST_TYPE_KEY;
 258                 alg = DST_ALG_HMACMD5;
 259         } else if (strcasecmp(algname, "HMAC-SHA1") == 0) {
 260                 options |= DST_TYPE_KEY;
 261                 alg = DST_ALG_HMACSHA1;
 262         } else if (strcasecmp(algname, "HMAC-SHA224") == 0) {
 263                 options |= DST_TYPE_KEY;
 264                 alg = DST_ALG_HMACSHA224;
 265         } else if (strcasecmp(algname, "HMAC-SHA256") == 0) {
 266                 options |= DST_TYPE_KEY;
 267                 alg = DST_ALG_HMACSHA256;
 268         } else if (strcasecmp(algname, "HMAC-SHA384") == 0) {
 269                 options |= DST_TYPE_KEY;
 270                 alg = DST_ALG_HMACSHA384;
 271         } else if (strcasecmp(algname, "HMAC-SHA512") == 0) {
 272                 options |= DST_TYPE_KEY;
 273                 alg = DST_ALG_HMACSHA512;
 274         } else {
 275                 r.base = algname;
 276                 r.length = strlen(algname);
 277                 ret = dns_secalg_fromtext(&alg, &r);
 278                 if (ret != ISC_R_SUCCESS)
 279                         fatal("unknown algorithm %s", algname);
 280                 if (alg == DST_ALG_DH)
 281                         options |= DST_TYPE_KEY;
 282         }
 283
 284         if (type != NULL && (options & DST_TYPE_KEY) != 0) {
 285                 if (strcasecmp(type, "NOAUTH") == 0)
 286                         flags |= DNS_KEYTYPE_NOAUTH;
 287                 else if (strcasecmp(type, "NOCONF") == 0)
 288                         flags |= DNS_KEYTYPE_NOCONF;
 289                 else if (strcasecmp(type, "NOAUTHCONF") == 0) {
 290                         flags |= (DNS_KEYTYPE_NOAUTH | DNS_KEYTYPE_NOCONF);
 291                         if (size < 0)
 292                                 size = 0;
 293                 }
 294                 else if (strcasecmp(type, "AUTHCONF") == 0)
 295                         /* nothing */;
 296                 else
 297                         fatal("invalid type %s", type);
 298         }
 299
 300         if (size < 0)
 301                 fatal("key size not specified (-b option)");
 302
 303         switch (alg) {
 304         case DNS_KEYALG_RSAMD5:
 305         case DNS_KEYALG_RSASHA1:
 306                 if (size != 0 && (size < 512 || size > MAX_RSA))
 307                         fatal("RSA key size %d out of range", size);
 308                 break;
 309         case DNS_KEYALG_DH:
 310                 if (size != 0 && (size < 128 || size > 4096))
 311                         fatal("DH key size %d out of range", size);
 312                 break;
 313         case DNS_KEYALG_DSA:
 314                 if (size != 0 && !dsa_size_ok(size))
 315                         fatal("invalid DSS key size: %d", size);
 316                 break;
 317         case DST_ALG_HMACMD5:
 318                 if (size < 1 || size > 512)
 319                         fatal("HMAC-MD5 key size %d out of range", size);
 320                 if (dbits != 0 && (dbits < 80 || dbits > 128))
 321                         fatal("HMAC-MD5 digest bits %d out of range", dbits);
 322                 if ((dbits % 8) != 0)
 323                         fatal("HMAC-MD5 digest bits %d not divisible by 8",
 324                               dbits);
 325                 break;
 326         case DST_ALG_HMACSHA1:
 327                 if (size < 1 || size > 160)
 328                         fatal("HMAC-SHA1 key size %d out of range", size);
 329                 if (dbits != 0 && (dbits < 80 || dbits > 160))
 330                         fatal("HMAC-SHA1 digest bits %d out of range", dbits);
 331                 if ((dbits % 8) != 0)
 332                         fatal("HMAC-SHA1 digest bits %d not divisible by 8",
 333                               dbits);
 334                 break;
 335         case DST_ALG_HMACSHA224:
 336                 if (size < 1 || size > 224)
 337                         fatal("HMAC-SHA224 key size %d out of range", size);
 338                 if (dbits != 0 && (dbits < 112 || dbits > 224))
 339                         fatal("HMAC-SHA224 digest bits %d out of range", dbits);
 340                 if ((dbits % 8) != 0)
 341                         fatal("HMAC-SHA224 digest bits %d not divisible by 8",
 342                               dbits);
 343                 break;
 344         case DST_ALG_HMACSHA256:
 345                 if (size < 1 || size > 256)
 346                         fatal("HMAC-SHA256 key size %d out of range", size);
 347                 if (dbits != 0 && (dbits < 128 || dbits > 256))
 348                         fatal("HMAC-SHA256 digest bits %d out of range", dbits);
 349                 if ((dbits % 8) != 0)
 350                         fatal("HMAC-SHA256 digest bits %d not divisible by 8",
 351                               dbits);
 352                 break;
 353         case DST_ALG_HMACSHA384:
 354                 if (size < 1 || size > 384)
 355                         fatal("HMAC-384 key size %d out of range", size);
 356                 if (dbits != 0 && (dbits < 192 || dbits > 384))
 357                         fatal("HMAC-SHA384 digest bits %d out of range", dbits);
 358                 if ((dbits % 8) != 0)
 359                         fatal("HMAC-SHA384 digest bits %d not divisible by 8",
 360                               dbits);
 361                 break;
 362         case DST_ALG_HMACSHA512:
 363                 if (size < 1 || size > 512)
 364                         fatal("HMAC-SHA512 key size %d out of range", size);
 365                 if (dbits != 0 && (dbits < 256 || dbits > 512))
 366                         fatal("HMAC-SHA512 digest bits %d out of range", dbits);
 367                 if ((dbits % 8) != 0)
 368                         fatal("HMAC-SHA512 digest bits %d not divisible by 8",
 369                               dbits);
 370                 break;
 371         }
 372
 373         if (!(alg == DNS_KEYALG_RSAMD5 || alg == DNS_KEYALG_RSASHA1) &&
 374             rsa_exp != 0)
 375                 fatal("specified RSA exponent for a non-RSA key");
 376
 377         if (alg != DNS_KEYALG_DH && generator != 0)
 378                 fatal("specified DH generator for a non-DH key");
 379
 380         if (nametype == NULL) {
 381                 if ((options & DST_TYPE_KEY) != 0) /* KEY / HMAC */
 382                         fatal("no nametype specified");
 383                 flags |= DNS_KEYOWNER_ZONE;     /* DNSKEY */
 384         } else if (strcasecmp(nametype, "zone") == 0)
 385                 flags |= DNS_KEYOWNER_ZONE;
 386         else if ((options & DST_TYPE_KEY) != 0) { /* KEY / HMAC */
 387                 if (strcasecmp(nametype, "host") == 0 ||
 388                          strcasecmp(nametype, "entity") == 0)
 389                         flags |= DNS_KEYOWNER_ENTITY;
 390                 else if (strcasecmp(nametype, "user") == 0)
 391                         flags |= DNS_KEYOWNER_USER;
 392                 else
 393                         fatal("invalid KEY nametype %s", nametype);
 394         } else if (strcasecmp(nametype, "other") != 0) /* DNSKEY */
 395                 fatal("invalid DNSKEY nametype %s", nametype);
 396
 397         rdclass = strtoclass(classname);
 398
 399         if ((options & DST_TYPE_KEY) != 0)  /* KEY / HMAC */
 400                 flags |= signatory;
 401         else if ((flags & DNS_KEYOWNER_ZONE) != 0) /* DNSKEY */
 402                 flags |= ksk;
 403
 404         if (protocol == -1)
 405                 protocol = DNS_KEYPROTO_DNSSEC;
 406         else if ((options & DST_TYPE_KEY) == 0 &&
 407                  protocol != DNS_KEYPROTO_DNSSEC)
 408                 fatal("invalid DNSKEY protocol: %d", protocol);
 409
 410         if ((flags & DNS_KEYFLAG_TYPEMASK) == DNS_KEYTYPE_NOKEY) {
 411                 if (size > 0)
 412                         fatal("specified null key with non-zero size");
 413                 if ((flags & DNS_KEYFLAG_SIGNATORYMASK) != 0)
 414                         fatal("specified null key with signing authority");
 415         }
 416
 417         if ((flags & DNS_KEYFLAG_OWNERMASK) == DNS_KEYOWNER_ZONE &&
 418             (alg == DNS_KEYALG_DH || alg == DST_ALG_HMACMD5 ||
 419              alg == DST_ALG_HMACSHA1 || alg == DST_ALG_HMACSHA224 ||
 420              alg == DST_ALG_HMACSHA256 || alg == DST_ALG_HMACSHA384 ||
 421              alg == DST_ALG_HMACSHA512))
 422                 fatal("a key with algorithm '%s' cannot be a zone key",
 423                       algname);
 424
 425         dns_fixedname_init(&fname);
 426         name = dns_fixedname_name(&fname);
 427         isc_buffer_init(&buf, argv[isc_commandline_index],
 428                         strlen(argv[isc_commandline_index]));
 429         isc_buffer_add(&buf, strlen(argv[isc_commandline_index]));
 430         ret = dns_name_fromtext(name, &buf, dns_rootname, ISC_FALSE, NULL);
 431         if (ret != ISC_R_SUCCESS)
 432                 fatal("invalid key name %s: %s", argv[isc_commandline_index],
 433                       isc_result_totext(ret));
 434
 435         switch(alg) {
 436         case DNS_KEYALG_RSAMD5:
 437         case DNS_KEYALG_RSASHA1:
 438                 param = rsa_exp;
 439                 break;
 440         case DNS_KEYALG_DH:
 441                 param = generator;
 442                 break;
 443         case DNS_KEYALG_DSA:
 444         case DST_ALG_HMACMD5:
 445         case DST_ALG_HMACSHA1:
 446         case DST_ALG_HMACSHA224:
 447         case DST_ALG_HMACSHA256:
 448         case DST_ALG_HMACSHA384:
 449         case DST_ALG_HMACSHA512:
 450                 param = 0;
 451                 break;
 452         }
 453
 454         if ((flags & DNS_KEYFLAG_TYPEMASK) == DNS_KEYTYPE_NOKEY)
 455                 null_key = ISC_TRUE;
 456
 457         isc_buffer_init(&buf, filename, sizeof(filename) - 1);
 458
 459         do {
 460                 conflict = ISC_FALSE;
 461                 oldkey = NULL;
 462
 463                 /* generate the key */
 464                 ret = dst_key_generate(name, alg, size, param, flags, protocol,
 465                                        rdclass, mctx, &key);
 466                 isc_entropy_stopcallbacksources(ectx);
 467
 468                 if (ret != ISC_R_SUCCESS) {
 469                         char namestr[DNS_NAME_FORMATSIZE];
 470                         char algstr[ALG_FORMATSIZE];
 471                         dns_name_format(name, namestr, sizeof(namestr));
 472                         alg_format(alg, algstr, sizeof(algstr));
 473                         fatal("failed to generate key %s/%s: %s\n",
 474                               namestr, algstr, isc_result_totext(ret));
 475                         exit(-1);
 476                 }
 477
 478                 dst_key_setbits(key, dbits);
 479
 480                 /*
 481                  * Try to read a key with the same name, alg and id from disk.
 482                  * If there is one we must continue generating a new one
 483                  * unless we were asked to generate a null key, in which
 484                  * case we return failure.
 485                  */
 486                 ret = dst_key_fromfile(name, dst_key_id(key), alg,
 487                                        DST_TYPE_PRIVATE, NULL, mctx, &oldkey);
 488                 /* do not overwrite an existing key  */
 489                 if (ret == ISC_R_SUCCESS) {
 490                         dst_key_free(&oldkey);
 491                         conflict = ISC_TRUE;
 492                         if (null_key)
 493                                 break;
 494                 }
 495                 if (conflict == ISC_TRUE) {
 496                         if (verbose > 0) {
 497                                 isc_buffer_clear(&buf);
 498                                 ret = dst_key_buildfilename(key, 0, NULL, &buf);
 499                                 fprintf(stderr,
 500                                         "%s: %s already exists, "
 501                                         "generating a new key\n",
 502                                         program, filename);
 503                         }
 504                         dst_key_free(&key);
 505                 }
 506
 507         } while (conflict == ISC_TRUE);
 508
 509         if (conflict)
 510                 fatal("cannot generate a null key when a key with id 0 "
 511                       "already exists");
 512
 513         ret = dst_key_tofile(key, options, NULL);
 514         if (ret != ISC_R_SUCCESS) {
 515                 char keystr[KEY_FORMATSIZE];
 516                 key_format(key, keystr, sizeof(keystr));
 517                 fatal("failed to write key %s: %s\n", keystr,
 518                       isc_result_totext(ret));
 519         }
 520
 521         isc_buffer_clear(&buf);
 522         ret = dst_key_buildfilename(key, 0, NULL, &buf);
 523         printf("%s\n", filename);
 524         dst_key_free(&key);
 525
 526         cleanup_logging(&log);
 527         cleanup_entropy(&ectx);
 528         dst_lib_destroy();
 529         dns_name_destroy();
 530         if (verbose > 10)
 531                 isc_mem_stats(mctx, stdout);
 532         isc_mem_destroy(&mctx);
 533
 534         return (0);
 535 }