tfcrypt.c

   1 /*
   2  * tfcrypt -- high security Threefish encryption tool.
   3  *
   4  * tfcrypt is copyrighted:
   5  * Copyright (C) 2012-2019 Andrey Rys. All rights reserved.
   6  *
   7  * tfcrypt is licensed to you under the terms of std. MIT/X11 license:
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining
  10  * a copy of this software and associated documentation files (the
  11  * "Software"), to deal in the Software without restriction, including
  12  * without limitation the rights to use, copy, modify, merge, publish,
  13  * distribute, sublicense, and/or sell copies of the Software, and to
  14  * permit persons to whom the Software is furnished to do so, subject to
  15  * the following conditions:
  16  *
  17  * The above copyright notice and this permission notice shall be
  18  * included in all copies or substantial portions of the Software.
  19  *
  20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  23  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
  24  * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  25  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  26  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27  */
  28
  29 #include "tfcrypt.h"
  30
  31 static tfc_byte svctr[TF_BLOCK_SIZE];
  32 static tfc_fsize rwd, do_read_loops, loopcnt;
  33
  34 static void open_log(const char *logfile)
  35 {
  36         int fd;
  37
  38         if (!strcmp(logfile, "-")) return;
  39
  40         fd = open(logfile, O_WRONLY | O_CREAT | O_LARGEFILE | O_TRUNC, 0666);
  41         if (fd == -1) xerror(NO, NO, YES, "%s", logfile);
  42         xclose(2);
  43         if (dup2(fd, 2) == -1) xexit(2);
  44         xclose(fd);
  45         do_statline_dynamic = NO;
  46 }
  47
  48 static int getps_filter(struct getpasswd_state *getps, char chr, size_t pos)
  49 {
  50         if (chr == '\x03') {
  51                 getps->retn = ((size_t)-2);
  52                 return 6;
  53         }
  54         return 1;
  55 }
  56
  57 static int getps_hex_filter(struct getpasswd_state *getps, char chr, size_t pos)
  58 {
  59         if (chr == '\x03') {
  60                 getps->retn = ((size_t)-2);
  61                 return 6;
  62         }
  63         if (chr >= '0' && chr <= '9') return 1;
  64         if (chr >= 'a' && chr <= 'f') return 1;
  65         if (chr >= 'A' && chr <= 'F') return 1;
  66         if (chr == '\x7f' || chr == '\x08'
  67         || chr == '\x15' || chr == '\x17') return 1;
  68         return 0;
  69 }
  70
  71 static inline int isctrlchr(int c)
  72 {
  73         if (c == 9) return 0;
  74         if (c >= 0 && c <= 31) return 1;
  75         if (c == 127) return 1;
  76         return 0;
  77 }
  78
  79 static int getps_plain_filter(struct getpasswd_state *getps, char chr, size_t pos)
  80 {
  81         int x;
  82
  83         x = getps_filter(getps, chr, pos);
  84         if (x != 1) return x;
  85
  86         if (pos < getps->pwlen && !isctrlchr(chr))
  87                 write(getps->efd, &chr, sizeof(char));
  88         return 1;
  89 }
  90
  91 static int getps_plain_hex_filter(struct getpasswd_state *getps, char chr, size_t pos)
  92 {
  93         int x;
  94
  95         x = getps_hex_filter(getps, chr, pos);
  96         if (x != 1) return x;
  97
  98         if (pos < getps->pwlen && !isctrlchr(chr))
  99                 write(getps->efd, &chr, sizeof(char));
 100         return 1;
 101 }
 102
 103 static void make_hint(void *hint, size_t szhint, const void *data, size_t szdata)
 104 {
 105         char t[TF_FROM_BITS(TF_MAX_BITS)];
 106
 107         skein(t, TF_MAX_BITS, NULL, data, szdata);
 108         xor_shrink(hint, szhint, t, sizeof(t));
 109         memset(t, 0, sizeof(t));
 110 }
 111
 112 static void raw_say_hint(void *hint, size_t szhint, const void *data, size_t szdata, const char *prompt)
 113 {
 114         make_hint(hint, szhint, data, szdata);
 115         if (prompt) tfc_nfsay(stderr, "%s: ", prompt);
 116         mehexdump(hint, szhint, szhint, 1);
 117         memset(hint, 0, szhint);
 118 }
 119
 120 static void say_hint(const void *data, size_t szdata, const char *prompt)
 121 {
 122         char t[TF_SIZE_UNIT];
 123         raw_say_hint(t, TF_SIZE_UNIT, data, szdata, prompt);
 124         /* t[] is erased (automatically) */
 125 }
 126
 127 int main(int argc, char **argv)
 128 {
 129         int c;
 130         double td;
 131         char *s, *d, *t, *stoi;
 132         size_t x, n;
 133
 134         progpid = getpid();
 135         progname = basename(argv[0]);
 136
 137         if (!isatty(2)) do_statline_dynamic = NO;
 138
 139         s = (char *)srcblk;
 140         d = getenv("HOME");
 141         if (!d) d = "";
 142         n = PATH_MAX > sizeof(srcblk) ? sizeof(srcblk) : PATH_MAX;
 143         if (xstrlcpy(s, d, n) >= n) goto _baddfname;
 144         if (xstrlcat(s, "/.tfcrypt.defs", n) >= n) goto _baddfname;
 145         read_defaults(s, YES);
 146 _baddfname:
 147         memset(s, 0, n);
 148
 149         if (!strcmp(progname, "iotool")) {
 150                 do_edcrypt = TFC_DO_PLAIN;
 151                 password = YES;
 152                 ctr_mode = TFC_MODE_PLAIN;
 153         }
 154
 155         opterr = 0;
 156         while ((c = getopt(argc, argv, "L:s:aU:C:r:K:t:Pkzxc:l:qedn:vV:pwE:o:O:S:AmuM:R:Z:WHD:")) != -1) {
 157                 switch (c) {
 158                         case 'L':
 159                                 read_defaults(optarg, NO);
 160                                 break;
 161                         case 's':
 162                                 saltf = optarg;
 163                                 break;
 164                         case 'r':
 165                                 randsource = optarg;
 166                                 break;
 167                         case 'c':
 168                                 if (!strcasecmp(optarg, "show"))
 169                                         counter_opt = TFC_CTR_SHOW;
 170                                 else if (!strcasecmp(optarg, "head"))
 171                                         counter_opt = TFC_CTR_HEAD;
 172                                 else if (!strcasecmp(optarg, "rand"))
 173                                         counter_opt = TFC_CTR_RAND;
 174                                 else if (!strcasecmp(optarg, "zero"))
 175                                         counter_opt = TFC_CTR_ZERO;
 176                                 else if (strchr(optarg, ':')) {
 177                                         char *ss, chr;
 178
 179                                         counter_opt = TFC_CTR_SSET;
 180                                         n = sizeof(ctr);
 181
 182                                         s = d = optarg; t = NULL;
 183                                         while ((s = strtok_r(d, ",", &t))) {
 184                                                 if (d) d = NULL;
 185
 186                                                 if (n == 0) break;
 187                                                 ss = strchr(s, ':');
 188                                                 if (!ss) continue;
 189                                                 *ss = 0; ss++;
 190                                                 chr = (char)strtoul(s, &stoi, 16);
 191                                                 if (!str_empty(stoi)) continue;
 192                                                 x = (size_t)strtoul(ss, &stoi, 10);
 193                                                 if (!str_empty(stoi)) continue;
 194                                                 if (x > n) x = n;
 195                                                 memset(ctr+(sizeof(ctr)-n), (int)chr, x);
 196                                                 n -= x;
 197                                         }
 198                                 }
 199                                 else counter_file = sksum_hashlist_file = optarg;
 200                                 break;
 201                         case 'C':
 202                                 if (!strcasecmp(optarg, "ctr"))
 203                                         ctr_mode = TFC_MODE_CTR;
 204                                 else if (!strcasecmp(optarg, "stream"))
 205                                         ctr_mode = TFC_MODE_STREAM;
 206                                 else if (!strcasecmp(optarg, "cbc"))
 207                                         ctr_mode = TFC_MODE_CBC;
 208                                 else if (!strcasecmp(optarg, "ecb"))
 209                                         ctr_mode = TFC_MODE_ECB;
 210                                 else if (!strcasecmp(optarg, "xts"))
 211                                         ctr_mode = TFC_MODE_XTS;
 212                                 else if (!strcasecmp(optarg, "ocb"))
 213                                         ctr_mode = TFC_MODE_OCB;
 214                                 else xerror(NO, YES, YES, "%s: invalid mode of operation", optarg);
 215                                 break;
 216                         case 'P':
 217                                 do_edcrypt = TFC_DO_PLAIN;
 218                                 password = YES;
 219                                 ctr_mode = TFC_MODE_PLAIN;
 220                                 break;
 221                         case 'e':
 222                                 if (do_edcrypt != TFC_DO_PLAIN) do_edcrypt = TFC_DO_ENCRYPT;
 223                                 break;
 224                         case 'd':
 225                                 if (do_edcrypt != TFC_DO_PLAIN) do_edcrypt = TFC_DO_DECRYPT;
 226                                 break;
 227                         case 'D':
 228                                 macbits = strtoul(optarg, &stoi, 10);
 229                                 if (macbits == 0 || !str_empty(stoi) || macbits < 8
 230                                 || macbits > TF_MAX_BITS || macbits % 8)
 231                                         xerror(NO, YES, YES, "%s: invalid MAC bits setting", optarg);
 232                                 break;
 233                         case 'n':
 234                                 nr_turns = sksum_turns = strtoul(optarg, &stoi, 10);
 235                                 if (!str_empty(stoi)) xerror(NO, YES, YES, "%s: invalid number of turns", optarg);
 236                                 break;
 237                         case 'U':
 238                                 if (!strcasecmp(optarg, "key"))
 239                                         mackey_opt = TFC_MACKEY_RAWKEY;
 240                                 else if (!strcasecmp(optarg, "pwd"))
 241                                         mackey_opt = TFC_MACKEY_PASSWORD;
 242                                 else {
 243                                         mackey_opt = TFC_MACKEY_FILE;
 244                                         mackeyf = optarg;
 245                                 }
 246                                 break;
 247                         case 'p':
 248                                 password = YES;
 249                                 break;
 250                         case 'k':
 251                                 rawkey = TFC_RAWKEY_KEYFILE;
 252                                 break;
 253                         case 'z':
 254                                 rawkey = TFC_RAWKEY_ASKSTR;
 255                                 break;
 256                         case 'x':
 257                                 rawkey = TFC_RAWKEY_ASKHEX;
 258                                 break;
 259                         case 'K':
 260                                 verbose = YES;
 261                                 genkeyf = optarg;
 262                                 break;
 263                         case 't':
 264                                 tweakf = optarg;
 265                                 do_full_key = NO;
 266                                 break;
 267                         case 'l':
 268                                 if (maxlen != NOFSIZE) break;
 269
 270                                 maxlen = tfc_humanfsize(optarg, &stoi);
 271                                 if (!str_empty(stoi)) {
 272                                         maxlen = tfc_fnamesize(optarg, YES);
 273                                         maxlen = tfc_modifysize(maxlen, strchr(optarg, ':'));
 274                                         if (maxlen == NOFSIZE) xerror(NO, YES, YES,
 275                                         "%s: invalid count value", optarg);
 276                                 }
 277                                 else maxlen = tfc_modifysize(maxlen, strchr(optarg, ':'));
 278                                 if (counter_opt == TFC_CTR_HEAD)
 279                                         maxlen += TF_BLOCK_SIZE;
 280                                 break;
 281                         case 'w':
 282                                 overwrite_source = YES;
 283                                 break;
 284                         case 'E':
 285                                 if (!strcmp(optarg, "xall")) {
 286                                         catch_all_errors = YES;
 287                                         break;
 288                                 }
 289                                 if (!strcmp(optarg, "xseek")) {
 290                                         ignore_seek_errors = YES;
 291                                         break;
 292                                 }
 293                                 if (!strcmp(optarg, "exit"))
 294                                         error_action = TFC_ERRACT_EXIT;
 295                                 else if (!strncmp(optarg, "cont", 4))
 296                                         error_action = TFC_ERRACT_CONT;
 297                                 else if (!strcmp(optarg, "sync"))
 298                                         error_action = TFC_ERRACT_SYNC;
 299                                 else if (!strcmp(optarg, "lsync"))
 300                                         error_action = TFC_ERRACT_LSYNC;
 301                                 else xerror(NO, YES, YES, "invalid error action %s specified", optarg);
 302                                 break;
 303                         case 'o':
 304                                 open_log(optarg);
 305                                 break;
 306                         case 'O':
 307                                 s = d = optarg; t = NULL;
 308                                 while ((s = strtok_r(d, ",", &t))) {
 309                                         if (d) d = NULL;
 310                                         if (!strcmp(s, "sync"))
 311                                                 write_flags |= O_SYNC;
 312                                         else if (!strcmp(s, "trunc"))
 313                                                 write_flags |= O_TRUNC;
 314                                         else if (!strcmp(s, "fsync"))
 315                                                 do_fsync = YES;
 316                                         else if (!strcmp(s, "pad"))
 317                                                 do_pad = YES;
 318                                         else if (!strcmp(s, "xtime"))
 319                                                 do_preserve_time = YES;
 320                                         else if (!strcmp(s, "gibsize"))
 321                                                 do_stats_in_gibs = YES;
 322                                         else if (!strcmp(s, "plainstats"))
 323                                                 do_statline_dynamic = NO;
 324                                         else if (!strcmp(s, "statless"))
 325                                                 do_less_stats = YES;
 326                                         else if (!strcmp(s, "norepeat"))
 327                                                 no_repeat = YES;
 328                                         else if (!strncmp(s, "prompt", 6) && *(s+6) == '=')
 329                                                 pw_prompt = s+7;
 330                                         else if (!strncmp(s, "macprompt", 9) && *(s+9) == '=')
 331                                                 mac_pw_prompt = s+10;
 332                                         else if (!strcmp(s, "shorthex"))
 333                                                 do_full_hexdump = NO;
 334                                         else if (!strcmp(s, "fullkey"))
 335                                                 do_full_key = YES;
 336                                         else if (!strcmp(s, "showsecrets"))
 337                                                 show_secrets = YES;
 338                                         else if (!strcmp(s, "finished"))
 339                                                 show_when_done = YES;
 340                                         else if (!strcmp(s, "pid"))
 341                                                 show_pid = YES;
 342                                         else if (!strncmp(s, "readloops", 9) && *(s+9) == '=') {
 343                                                 do_read_loops = tfc_humanfsize(s+10, &stoi);
 344                                                 if (!str_empty(stoi)) do_read_loops = NOSIZE;
 345                                         }
 346                                         else if (!strncmp(s, "logfile", 7) && *(s+7) == '=')
 347                                                 open_log(s+8);
 348                                         else if (!strncmp(s, "iobs", 4) && *(s+4) == '=') {
 349                                                 s += 5;
 350                                                 blksize = (size_t)tfc_humanfsize(s, &stoi);
 351                                                 if (!str_empty(stoi)) {
 352                                                         blksize = (size_t)tfc_fnamesize(s, YES);
 353                                                         blksize = (size_t)tfc_modifysize((tfc_fsize)blksize, strchr(s, ':'));
 354                                                         if (blksize == NOSIZE) xerror(NO, YES, YES,
 355                                                         "%s: invalid block size value", s);
 356                                                 }
 357                                                 else blksize = (size_t)tfc_modifysize((tfc_fsize)blksize, strchr(s, ':'));
 358                                                 if (blksize < TF_BLOCK_SIZE) xerror(NO, YES, YES,
 359                                                         "%s: block size is lesser than TF_BLOCK_SIZE (%u bytes)", s, TFC_U(TF_BLOCK_SIZE));
 360                                                 if (blksize > TFC_BLKSIZE) xerror(NO, YES, YES,
 361                                                         "%s: block size exceeds %u bytes",
 362                                                         s, TFC_U(TFC_BLKSIZE));
 363                                         }
 364                                         else if (!strncmp(s, "xtsblocks", 9) && *(s+9) == '=') {
 365                                                 s += 10;
 366                                                 xtsblocks = (size_t)tfc_humanfsize(s, &stoi);
 367                                                 if (!str_empty(stoi)) {
 368                                                         xtsblocks = (size_t)tfc_fnamesize(s, YES);
 369                                                         xtsblocks = (size_t)tfc_modifysize((tfc_fsize)xtsblocks, strchr(s, ':'));
 370                                                         if (xtsblocks == NOSIZE) xerror(NO, YES, YES,
 371                                                         "%s: invalid blocks per xts block value", s);
 372                                                 }
 373                                                 else xtsblocks = (size_t)tfc_modifysize((tfc_fsize)xtsblocks, strchr(s, ':'));
 374                                                 if (TFC_BLKSIZE % xtsblocks) xerror(NO, YES, YES,
 375                                                         "%s: nr of blocks per xts block is not round to %u bytes",
 376                                                         s, TFC_U(TFC_BLKSIZE));
 377                                                 if ((xtsblocks * TF_BLOCK_SIZE) > TFC_BLKSIZE) xerror(NO, YES, YES,
 378                                                         "%s: nr of blocks per xts block exceeds %u bytes",
 379                                                         s, TFC_U(TFC_BLKSIZE));
 380                                         }
 381                                         else if (!strncmp(s, "iseek", 5) && *(s+5) == '=') {
 382                                                 s += 6;
 383                                                 iseek = tfc_humanfsize(s, &stoi);
 384                                                 if (!str_empty(stoi)) {
 385                                                         iseek = tfc_fnamesize(s, YES);
 386                                                         iseek = tfc_modifysize(iseek, strchr(s, ':'));
 387                                                         if (iseek == NOFSIZE) xerror(NO, YES, YES,
 388                                                         "%s: invalid iseek value", s);
 389                                                 }
 390                                                 else iseek = tfc_modifysize(iseek, strchr(s, ':'));
 391                                                 if (ctr_mode != TFC_MODE_PLAIN && iseek % TF_BLOCK_SIZE)
 392                                                         xerror(NO, YES, YES,
 393                                                                 "%s: not round to TF block size "
 394                                                                 "of %u bytes",
 395                                                                 s, TFC_U(TF_BLOCK_SIZE));
 396                                                 iseek_blocks = iseek / TF_BLOCK_SIZE;
 397                                         }
 398                                         else if (!strncmp(s, "ixseek", 6) && *(s+6) == '=') {
 399                                                 s += 7;
 400                                                 iseek = tfc_humanfsize(s, &stoi);
 401                                                 if (!str_empty(stoi)) {
 402                                                         iseek = tfc_fnamesize(s, YES);
 403                                                         iseek = tfc_modifysize(iseek, strchr(s, ':'));
 404                                                         if (iseek == NOFSIZE) xerror(NO, YES, YES,
 405                                                                 "%s: invalid ixseek value", s);
 406                                                 }
 407                                                 else iseek = tfc_modifysize(iseek, strchr(s, ':'));
 408                                         }
 409                                         else if (!strncmp(s, "ictr", 4) && *(s+4) == '=') {
 410                                                 s += 5;
 411                                                 iseek_blocks = tfc_humanfsize(s, &stoi);
 412                                                 if (!str_empty(stoi)) {
 413                                                         iseek_blocks = tfc_fnamesize(s, YES);
 414                                                         if (iseek_blocks == NOFSIZE)
 415                                                                 xerror(NO, YES, YES,
 416                                                                 "%s: invalid ictr value", s);
 417                                                         iseek_blocks /= TF_BLOCK_SIZE;
 418                                                         iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 419                                                 }
 420                                                 else iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 421                                         }
 422                                         else if (!strncmp(s, "ixctr", 5) && *(s+5) == '=') {
 423                                                 s += 6;
 424                                                 iseek_blocks = tfc_humanfsize(s, &stoi);
 425                                                 if (!str_empty(stoi)) {
 426                                                         iseek_blocks = tfc_fnamesize(s, YES);
 427                                                         iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 428                                                         if (iseek_blocks == NOFSIZE)
 429                                                                 xerror(NO, YES, YES,
 430                                                                 "%s: invalid ixctr value", s);
 431                                                 }
 432                                                 else iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 433                                                 if (iseek_blocks % TF_BLOCK_SIZE)
 434                                                         xerror(NO, YES, YES,
 435                                                         "%s: not round to TF block size "
 436                                                         "of %u bytes", s, TFC_U(TF_BLOCK_SIZE));
 437                                                 iseek_blocks /= TF_BLOCK_SIZE;
 438                                         }
 439                                         else if (!strncmp(s, "oseek", 5) && *(s+5) == '=') {
 440                                                 s += 6;
 441                                                 oseek = tfc_humanfsize(s, &stoi);
 442                                                 if (!str_empty(stoi)) {
 443                                                         oseek = tfc_fnamesize(s, YES);
 444                                                         oseek = tfc_modifysize(oseek, strchr(s, ':'));
 445                                                         if (oseek == NOFSIZE) xerror(NO, YES, YES,
 446                                                         "%s: invalid oseek value", s);
 447                                                 }
 448                                                 else oseek = tfc_modifysize(oseek, strchr(s, ':'));
 449                                         }
 450                                         else if (!strncmp(s, "count", 5) && *(s+5) == '=') {
 451                                                 s += 6;
 452                                                 maxlen = tfc_humanfsize(s, &stoi);
 453                                                 if (!str_empty(stoi)) {
 454                                                         maxlen = tfc_fnamesize(s, YES);
 455                                                         maxlen = tfc_modifysize(maxlen, strchr(s, ':'));
 456                                                         if (maxlen == NOFSIZE) xerror(NO, YES, YES,
 457                                                         "%s: invalid count value", s);
 458                                                 }
 459                                                 else maxlen = tfc_modifysize(maxlen, strchr(s, ':'));
 460                                                 if (counter_opt == TFC_CTR_HEAD)
 461                                                         maxlen += TF_BLOCK_SIZE;
 462                                         }
 463                                         else if (!strncmp(s, "ftrunc", 6) && *(s+6) == '=') {
 464                                                 s += 7;
 465                                                 if (!strcmp(s, "tail")) {
 466                                                         do_ftrunc = TFC_FTRUNC_TAIL;
 467                                                         ftrunc_dfd = NOFSIZE;
 468                                                 }
 469                                                 else {
 470                                                         do_ftrunc = TFC_DO_FTRUNC;
 471                                                         ftrunc_dfd = tfc_humanfsize(s, &stoi);
 472                                                         if (!str_empty(stoi)) {
 473                                                                 ftrunc_dfd = tfc_fnamesize(s, YES);
 474                                                                 ftrunc_dfd = tfc_modifysize(ftrunc_dfd, strchr(s, ':'));
 475                                                                 if (ftrunc_dfd == NOFSIZE) xerror(NO, YES, YES,
 476                                                                 "%s: invalid ftrunc value", s);
 477                                                         }
 478                                                         else ftrunc_dfd = tfc_modifysize(ftrunc_dfd, strchr(s, ':'));
 479                                                 }
 480                                         }
 481                                         else if (!strncmp(s, "xkey", 4) && *(s+4) == '=') {
 482                                                 s += 5;
 483                                                 maxkeylen = tfc_humanfsize(s, &stoi);
 484                                                 if (!str_empty(stoi)) {
 485                                                         maxkeylen = tfc_fnamesize(s, YES);
 486                                                         maxkeylen = tfc_modifysize(maxkeylen, strchr(s, ':'));
 487                                                         if (maxkeylen == NOSIZE)
 488                                                                 xerror(NO, YES, YES,
 489                                                                 "%s: invalid key length value", s);
 490                                                 }
 491                                                 else maxkeylen = tfc_modifysize(maxkeylen, strchr(s, ':'));
 492                                         }
 493                                         else if (!strncmp(s, "okey", 4) && *(s+4) == '=') {
 494                                                 s += 5;
 495                                                 keyoffset = tfc_humanfsize(s, &stoi);
 496                                                 if (!str_empty(stoi)) {
 497                                                         keyoffset = tfc_fnamesize(s, YES);
 498                                                         keyoffset = tfc_modifysize(keyoffset, strchr(s, ':'));
 499                                                         if (keyoffset == NOFSIZE)
 500                                                                 xerror(NO, YES, YES,
 501                                                                 "%s: invalid key offset value", s);
 502                                                 }
 503                                                 else keyoffset = tfc_modifysize(keyoffset, strchr(s, ':'));
 504                                         }
 505                                         else if (!strncmp(s, "xctr", 4) && *(s+4) == '=') {
 506                                                 s += 5;
 507                                                 ctrsz = tfc_humanfsize(s, &stoi);
 508                                                 if (!str_empty(stoi)) {
 509                                                         ctrsz = (size_t)tfc_fnamesize(s, YES);
 510                                                         ctrsz = (size_t)tfc_modifysize((tfc_fsize)ctrsz, strchr(s, ':'));
 511                                                         if (ctrsz == NOSIZE)
 512                                                                 xerror(NO, YES, YES,
 513                                                                 "%s: invalid counter length value", s);
 514                                                 }
 515                                                 else ctrsz = (size_t)tfc_modifysize((tfc_fsize)ctrsz, strchr(s, ':'));
 516                                                 if (ctrsz > TF_BLOCK_SIZE)
 517                                                         xerror(NO, YES, YES, "%s: counter size cannot exceed TF block size", s);
 518                                         }
 519                                         else xerror(NO, YES, YES, "invalid option %s", s);
 520                                 }
 521                                 break;
 522                         case 'S':
 523                                 do_mac = TFC_MAC_SIGN;
 524                                 if (strcasecmp(optarg, "mac") != 0)
 525                                         do_mac_file = optarg;
 526                                 break;
 527                         case 'M':
 528                                 do_mac = TFC_MAC_VRFY;
 529                                 if (!strcasecmp(optarg, "drop"))
 530                                         do_mac = TFC_MAC_DROP;
 531                                 else if (strcasecmp(optarg, "mac") != 0)
 532                                         do_mac_file = optarg;
 533                                 break;
 534                         case 'm':
 535                         case 'u':
 536                                 if (do_mac != TFC_MAC_VRFY)
 537                                         xerror(NO, YES, YES, "signature source was not specified");
 538                                 do_mac = TFC_MAC_JUST_VRFY;
 539                                 if (c == 'u') do_mac = TFC_MAC_JUST_VRFY2;
 540                                 break;
 541                         case 'R':
 542                         case 'Z':
 543                                 if (maxlen != NOFSIZE) {
 544                                         if (c == 'Z') genzero_nr_bytes = maxlen;
 545                                         else genrandom_nr_bytes = maxlen;
 546                                 }
 547                                 else {
 548                                         tfc_fsize t;
 549                                         if (!strcasecmp(optarg, "cbs"))
 550                                                 t = TF_BLOCK_SIZE;
 551                                         else if (!strcasecmp(optarg, "ks"))
 552                                                 t = TF_FROM_BITS(TFC_KEY_BITS);
 553                                         else if (!strcasecmp(optarg, "xks"))
 554                                                 t = TF_FROM_BITS(TFC_KEY_BITS) * 2;
 555                                         else if (!strcasecmp(optarg, "iobs"))
 556                                                 t = blksize;
 557                                         else {
 558                                                 t = tfc_humanfsize(optarg, &stoi);
 559                                                 if (!str_empty(stoi)) {
 560                                                         t = tfc_fnamesize(optarg, NO);
 561                                                         t = tfc_modifysize(t, strchr(optarg, ':'));
 562                                                 }
 563                                                 else t = tfc_modifysize(t, strchr(optarg, ':'));
 564                                         }
 565                                         if (c == 'Z') genzero_nr_bytes = maxlen = t;
 566                                         else genrandom_nr_bytes = maxlen = t;
 567                                 }
 568                                 break;
 569                         case 'a':
 570                                 do_preserve_time = YES;
 571                                 break;
 572                         case 'A':
 573                                 do_outfmt = TFC_OUTFMT_B64;
 574                                 break;
 575                         case 'W':
 576                                 do_outfmt = TFC_OUTFMT_RAW;
 577                                 break;
 578                         case 'H':
 579                                 do_outfmt = TFC_OUTFMT_HEX;
 580                                 break;
 581                         case 'q':
 582                                 quiet = YES;
 583                                 xexit_no_nl = YES;
 584                                 verbose = NO;
 585                                 do_full_hexdump = NO;
 586                                 status_timer = 0;
 587                                 break;
 588                         case 'v':
 589                                 verbose = YES;
 590                                 break;
 591                         case 'V':
 592                                 td = strtod(optarg, &stoi);
 593                                 status_timer = TFC_DTOUSECS(td);
 594                                 if (status_timer <= TFC_DTOUSECS(0) || !str_empty(stoi)) status_timer = 0;
 595                                 break;
 596                         default:
 597                                 usage();
 598                                 break;
 599                 }
 600         }
 601
 602         if (!strcmp(progname, "tfbench")) {
 603                 if (!*(argv+optind)) usage();
 604
 605                 td = strtod(*(argv+optind), &stoi);
 606                 if (td <= TFC_DTOUSECS(0) || !str_empty(stoi))
 607                         xerror(NO, YES, YES,
 608                         "%s: invalid benchmark time in seconds", *(argv+optind));
 609                 bench_timer = TFC_DTOUSECS(td);
 610                 do_benchmark(bench_timer, td);
 611         }
 612         if (genrandom_nr_bytes) {
 613                 ctr_mode = TFC_MODE_STREAM;
 614                 do_edcrypt = TFC_DO_ENCRYPT;
 615                 gen_write_bytes(*(argv+optind), oseek, genrandom_nr_bytes);
 616         }
 617         if (genzero_nr_bytes) {
 618                 ctr_mode = TFC_MODE_PLAIN;
 619                 do_edcrypt = TFC_DO_PLAIN;
 620                 gen_write_bytes(*(argv+optind), oseek, genzero_nr_bytes);
 621         }
 622
 623         if (rawkey && password)
 624                 xerror(NO, YES, YES, "Cannot use rawkey and hashing password!");
 625         if (do_edcrypt == TFC_DO_ENCRYPT && do_mac >= TFC_MAC_VRFY)
 626                 xerror(NO, YES, YES, "Cannot encrypt and verify signature!");
 627         if (do_edcrypt == TFC_DO_DECRYPT && do_mac == TFC_MAC_SIGN)
 628                 xerror(NO, YES, YES, "Cannot decrypt and calculate signature!");
 629         if (do_edcrypt == TFC_DO_DECRYPT && counter_opt == TFC_CTR_RAND)
 630                 xerror(NO, YES, YES, "Cannot decrypt and embed a generated CTR into file!");
 631         if (do_edcrypt == TFC_DO_ENCRYPT && counter_opt == TFC_CTR_HEAD)
 632                 xerror(NO, YES, YES, "Cannot encrypt and read CTR from source!");
 633         if (overwrite_source && counter_opt == TFC_CTR_RAND)
 634                 xerror(NO, YES, YES, "Cannot embed a CTR into file when overwriting it!");
 635         if (ctr_mode == TFC_MODE_PLAIN
 636         && (do_edcrypt || do_mac || rawkey
 637         || mackey_opt || counter_opt || counter_file))
 638                 xerror(NO, YES, YES, "Encryption facility is disabled when in plain IO mode.");
 639
 640         errno = 0;
 641         do_stop = NO;
 642
 643         if (saltf) {
 644                 int saltfd;
 645
 646                 memset(tfc_salt, 0, TFC_MAX_SALT);
 647                 tfc_saltsz = 0;
 648                 if (!strcasecmp(saltf, "disable")) goto _nosalt;
 649
 650                 if (!strcmp(saltf, "-")) saltfd = 0;
 651                 else saltfd = open(saltf, O_RDONLY | O_LARGEFILE);
 652                 if (saltfd == -1) xerror(NO, NO, YES, "%s", saltf);
 653                 lio = xread(saltfd, tfc_salt, TFC_MAX_SALT - TF_FROM_BITS(TFC_KEY_BITS));
 654                 if (lio == NOSIZE) xerror(NO, NO, YES, "%s", saltf);
 655                 tfc_saltsz = lio;
 656                 xclose(saltfd);
 657         }
 658
 659 _nosalt:
 660         if (mackey_opt == TFC_MACKEY_FILE && mackeyf) {
 661                 int mkfd = -1;
 662                 tfc_yesno do_stop;
 663
 664                 if (!strcmp(mackeyf, "-")) mkfd = 0;
 665                 else mkfd = open(mackeyf, O_RDONLY | O_LARGEFILE);
 666                 if (mkfd == -1) xerror(NO, NO, YES, "%s", mackeyf);
 667
 668                 skein_init(&sk, TFC_KEY_BITS);
 669
 670                 do_stop = NO;
 671                 while (1) {
 672                         if (do_stop) break;
 673                         pblk = tmpdata;
 674                         ldone = 0;
 675                         lrem = lblock = sizeof(tmpdata);
 676                         if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(mkfd);
 677 _mkragain:              lio = xread(mkfd, pblk, lrem);
 678                         if (lio == 0 && do_stop == NO) do_stop = YES;
 679                         if (lio != NOSIZE) ldone += lio;
 680                         else {
 681                                 if (errno != EIO && catch_all_errors != YES)
 682                                         xerror(NO, NO, NO, "%s", mackeyf);
 683                                 switch (error_action) {
 684                                         case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", mackeyf); goto _mkragain; break;
 685                                         case TFC_ERRACT_SYNC:
 686                                         case TFC_ERRACT_LSYNC:
 687                                                 xerror(YES, NO, NO, "%s", mackeyf);
 688                                                 lio = ldone = lrem = lblock;
 689                                                 memset(tmpdata, 0, lio);
 690                                                 if (rdpos == NOFSIZE) lseek(mkfd, lio, SEEK_CUR);
 691                                                 else lseek(mkfd, rdpos + lio, SEEK_SET);
 692                                                 break;
 693                                         default: xerror(NO, NO, NO, "%s", mackeyf); break;
 694                                 }
 695                         }
 696                         if (lio && lio < lrem) {
 697                                 pblk += lio;
 698                                 lrem -= lio;
 699                                 goto _mkragain;
 700                         }
 701
 702                         skein_update(&sk, tmpdata, ldone);
 703                 }
 704
 705                 skein_final(mackey, &sk);
 706
 707                 xclose(mkfd);
 708         }
 709         else if (mackey_opt == TFC_MACKEY_PASSWORD) {
 710                 memset(&getps, 0, sizeof(struct getpasswd_state));
 711                 getps.fd = getps.efd = -1;
 712                 getps.passwd = pwdask;
 713                 getps.pwlen = sizeof(pwdask)-1;
 714                 getps.echo = mac_pw_prompt ? mac_pw_prompt : "Enter MAC password: ";
 715                 getps.charfilter = (show_secrets == YES) ? getps_plain_filter : getps_filter;
 716                 getps.maskchar = (show_secrets == YES) ? 0 : 'x';
 717                 getps.flags = GETP_WAITFILL;
 718                 n = xgetpasswd(&getps);
 719                 if (n == NOSIZE) xerror(NO, NO, YES, "getting MAC password");
 720                 if (n == ((size_t)-2)) xexit(1);
 721                 if (verbose) say_hint(pwdask, n, "MAC password hint");
 722                 skein(mackey, TF_MAX_BITS, NULL, pwdask, n);
 723         }
 724
 725
 726         if ((strlen(progname) <= 9)
 727         && ((!strcmp(progname, "sksum"))
 728         || ((!memcmp(progname, "sk", 2))
 729         && (!memcmp(progname+3, "sum", 3)
 730         || !memcmp(progname+4, "sum", 3)
 731         || !memcmp(progname+5, "sum", 3)
 732         || !memcmp(progname+6, "sum", 3)))))
 733                 do_sksum(progname, argv+optind);
 734         if (!strcmp(progname, "tfbase64")) do_edbase64(argv+optind);
 735
 736         idx = optind;
 737
 738         if (argv[idx]) {
 739                 if (password || rawkey > TFC_RAWKEY_KEYFILE) goto _nokeyfd;
 740                 if (!strcmp(argv[idx], "-")) kfd = 0;
 741                 else kfd = open(argv[idx], O_RDONLY | O_LARGEFILE);
 742                 if (kfd == -1) xerror(NO, NO, YES, "%s", argv[idx]);
 743
 744                 lio = strnlen(argv[idx], PATH_MAX);
 745                 memset(argv[idx], '*', lio);
 746
 747                 idx++;
 748         }
 749         else password = YES;
 750
 751         errno = 0;
 752         if (do_full_key == NO && tweakf) {
 753                 int twfd;
 754
 755                 if (!strcmp(tweakf, "-")) twfd = 0;
 756                 else twfd = open(tweakf, O_RDONLY | O_LARGEFILE);
 757                 if (twfd == -1) xerror(NO, NO, YES, "%s", tweakf);
 758                 lio = ldone = xread(twfd, tweak, TF_TWEAK_SIZE);
 759                 if (lio == NOSIZE) xerror(NO, NO, YES, "%s", tweakf);
 760                 if (ldone < TF_TWEAK_SIZE)
 761                         xerror(NO, NO, YES, "%s: %zu bytes tweak required", tweakf, TF_TWEAK_SIZE);
 762                 xclose(twfd);
 763         }
 764
 765 _nokeyfd:
 766         errno = 0;
 767         if (argv[idx]) {
 768                 if (!strcmp(argv[idx], "-") && kfd) sfd = 0;
 769                 else {
 770                         sfd = open(argv[idx], O_RDONLY | O_LARGEFILE);
 771                         if (do_preserve_time) if (fstat(sfd, &s_stat) == -1)
 772                                 xerror(YES, NO, YES, "stat(%s)", argv[idx]);
 773                 }
 774                 if (sfd == -1) xerror(NO, NO, YES, "%s", argv[idx]);
 775
 776                 if (do_edcrypt == TFC_DO_DECRYPT && do_mac != NO && maxlen != NOFSIZE) {
 777                         if (verbose) tfc_esay("%s: disabling signature verification on "
 778                                 "requested partial decryption.", tfc_format_pid(progname));
 779                         do_mac = NO;
 780                 }
 781
 782                 if ((do_mac >= TFC_MAC_VRFY || do_mac == TFC_MAC_DROP) && !do_mac_file) {
 783                         maxlen = tfc_fdsize(sfd);
 784                         if (maxlen == NOFSIZE)
 785                                 xerror(NO, YES, YES,
 786                                 "Cannot verify embedded MAC with non-seekable source!");
 787                         maxlen -= TF_FROM_BITS(macbits);
 788                 }
 789                 srcfname = argv[idx];
 790                 idx++;
 791         }
 792
 793         if (!do_mac_file && (do_mac >= TFC_MAC_VRFY && sfd == 0))
 794                 xerror(NO, YES, YES, "Cannot verify embedded MAC with non-seekable source!");
 795
 796         if (ctrsz == NOSIZE) ctrsz = TF_BLOCK_SIZE;
 797         if (ctrsz > TF_BLOCK_SIZE) ctrsz = TF_BLOCK_SIZE;
 798
 799         if (ctr_mode == TFC_MODE_ECB) goto _ctrskip1;
 800         errno = 0;
 801         if (counter_file) {
 802                 int ctrfd;
 803
 804                 if (!strcmp(counter_file, "-")) ctrfd = 0;
 805                 else ctrfd = open(counter_file, O_RDONLY | O_LARGEFILE);
 806                 if (ctrfd == -1) xerror(NO, NO, YES, "%s", counter_file);
 807                 lio = xread(ctrfd, ctr, ctrsz);
 808                 if (lio == NOSIZE) xerror(NO, NO, YES, "%s", counter_file);
 809                 if (lio < ctrsz) xerror(NO, YES, YES, "counter file is too small (%zu)!", lio);
 810                 xclose(ctrfd);
 811         }
 812         else if (counter_opt == TFC_CTR_HEAD) {
 813                 pblk = ctr;
 814                 ldone = 0;
 815                 lrem = lblock = ctrsz;
 816                 if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(sfd);
 817 _ctrragain:     lio = xread(sfd, pblk, lrem);
 818                 if (lio != NOSIZE) ldone += lio;
 819                 else {
 820                         if (errno != EIO && catch_all_errors != YES)
 821                                 xerror(NO, NO, NO, "%s", srcfname);
 822                         switch (error_action) {
 823                                 case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", srcfname); goto _ctrragain; break;
 824                                 case TFC_ERRACT_SYNC:
 825                                 case TFC_ERRACT_LSYNC:
 826                                         xerror(YES, NO, NO, "%s", srcfname);
 827                                         lio = ldone = lrem = lblock;
 828                                         memset(ctr, 0, lio);
 829                                         if (rdpos == NOFSIZE) lseek(sfd, lio, SEEK_CUR);
 830                                         else lseek(sfd, rdpos + lio, SEEK_SET);
 831                                         break;
 832                                 default: xerror(NO, NO, NO, "%s", srcfname); break;
 833                         }
 834                 }
 835                 if (lio && lio < lrem) {
 836                         pblk += lio;
 837                         lrem -= lio;
 838                         goto _ctrragain;
 839                 }
 840                 total_processed_src += ldone;
 841         }
 842
 843 _ctrskip1:
 844         if (iseek) {
 845                 if (counter_opt == TFC_CTR_HEAD && ctr_mode != TFC_MODE_ECB)
 846                         iseek += ctrsz;
 847                 if (lseek(sfd, iseek, SEEK_SET) == -1)
 848                         xerror(ignore_seek_errors, NO, NO, "%s: seek failed", srcfname);
 849         }
 850
 851         if (ctr_mode == TFC_MODE_PLAIN) goto _plain;
 852
 853         if (verbose) tfc_esay("%s: hashing password", tfc_format_pid(progname));
 854
 855         if (rawkey == TFC_RAWKEY_KEYFILE) {
 856                 tfc_yesno xtskeyset = NO;
 857
 858                 pblk = key;
 859 _xts2key:       ldone = 0;
 860                 lrem = lblock = TF_FROM_BITS(TFC_KEY_BITS);
 861                 if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(kfd);
 862 _keyragain:     lio = xread(kfd, pblk, lrem);
 863                 if (lio != NOSIZE) ldone += lio;
 864                 else {
 865                         if (errno != EIO && catch_all_errors != YES)
 866                                 xerror(NO, NO, NO, "reading key");
 867                         switch (error_action) {
 868                                 case TFC_ERRACT_CONT: xerror(YES, NO, NO, "reading key"); goto _keyragain; break;
 869                                 case TFC_ERRACT_SYNC:
 870                                 case TFC_ERRACT_LSYNC:
 871                                         xerror(YES, NO, NO, "reading key");
 872                                         lio = ldone = lrem = lblock;
 873                                         memset(key, 0, lio);
 874                                         if (rdpos == NOFSIZE) lseek(kfd, lio, SEEK_CUR);
 875                                         else lseek(kfd, rdpos + lio, SEEK_SET);
 876                                         break;
 877                                 default: xerror(NO, NO, NO, "reading key"); break;
 878                         }
 879                 }
 880                 if (lio && lio < lrem) {
 881                         pblk += lio;
 882                         lrem -= lio;
 883                         goto _keyragain;
 884                 }
 885                 if (ldone < lblock) xerror(NO, YES, YES, "rawkey too small! (%zu)", ldone);
 886
 887                 if (ctr_mode == TFC_MODE_XTS) {
 888                         if (xtskeyset == NO) {
 889                                 pblk = xtskey;
 890                                 xtskeyset = YES;
 891                                 goto _xts2key;
 892                         }
 893                 }
 894         }
 895         else if (rawkey == TFC_RAWKEY_ASKSTR) {
 896                 tfc_yesno xtskeyset = NO;
 897
 898                 pblk = key; n = sizeof(key);
 899 _xts2keyaskstr: memset(&getps, 0, sizeof(struct getpasswd_state));
 900                 getps.fd = getps.efd = -1;
 901                 getps.passwd = (char *)pblk;
 902                 getps.pwlen = n;
 903                 getps.echo = pw_prompt ? pw_prompt : "Enter rawkey (str): ";
 904                 getps.charfilter = (show_secrets == YES) ? getps_plain_filter : getps_filter;
 905                 getps.maskchar = (show_secrets == YES) ? 0 : 'x';
 906                 getps.flags = GETP_WAITFILL;
 907                 n = xgetpasswd(&getps);
 908                 if (n == NOSIZE) xerror(NO, NO, YES, "getting string rawkey");
 909                 if (n == ((size_t)-2)) xexit(1);
 910                 if (verbose) say_hint(pblk, n, "Raw string key hint");
 911                 if (ctr_mode == TFC_MODE_XTS) {
 912                         if (xtskeyset == NO) {
 913                                 pblk = xtskey; n = sizeof(xtskey);
 914                                 xtskeyset = YES;
 915                                 goto _xts2keyaskstr;
 916                         }
 917                 }
 918         }
 919         else if (rawkey == TFC_RAWKEY_ASKHEX) {
 920                 tfc_yesno xtskeyset = NO;
 921
 922                 pblk = key;
 923 _rawkey_hex_again:
 924                 memset(&getps, 0, sizeof(struct getpasswd_state));
 925                 getps.fd = getps.efd = -1;
 926                 getps.passwd = pwdask;
 927                 getps.pwlen = (TF_FROM_BITS(TFC_KEY_BITS)*2);
 928                 getps.echo = pw_prompt ? pw_prompt : "Enter rawkey (hex): ";
 929                 getps.charfilter = (show_secrets == YES) ? getps_plain_hex_filter : getps_hex_filter;
 930                 getps.maskchar = (show_secrets == YES) ? 0 : 'x';
 931                 getps.flags = GETP_WAITFILL;
 932                 n = xgetpasswd(&getps);
 933                 if (n == NOSIZE) xerror(NO, NO, YES, "getting hex rawkey");
 934                 if (n == ((size_t)-2)) xexit(1);
 935                 if (n % 2) {
 936                         tfc_esay("Please input even number of hex digits!");
 937                         goto _rawkey_hex_again;
 938                 }
 939                 hex2bin(pblk, pwdask);
 940                 memset(pwdask, 0, sizeof(pwdask));
 941                 if (verbose) say_hint(pblk, n/2, "Raw hex key hint");
 942                 if (ctr_mode == TFC_MODE_XTS) {
 943                         if (xtskeyset == NO) {
 944                                 pblk = xtskey;
 945                                 xtskeyset = YES;
 946                                 goto _rawkey_hex_again;
 947                         }
 948                 }
 949         }
 950         else if (password) {
 951 _pwdagain:      memset(&getps, 0, sizeof(struct getpasswd_state));
 952                 getps.fd = getps.efd = -1;
 953                 getps.passwd = pwdask;
 954                 getps.pwlen = sizeof(pwdask)-1;
 955                 getps.echo = pw_prompt ? pw_prompt : "Enter password: ";
 956                 getps.charfilter = (show_secrets == YES) ? getps_plain_filter : getps_filter;
 957                 getps.maskchar = (show_secrets == YES) ? 0 : 'x';
 958                 getps.flags = GETP_WAITFILL;
 959                 n = xgetpasswd(&getps);
 960                 if (n == NOSIZE) xerror(NO, NO, YES, "getting password");
 961                 if (n == ((size_t)-2)) xexit(1);
 962                 if (do_edcrypt == TFC_DO_ENCRYPT && no_repeat == NO) {
 963                         getps.fd = getps.efd = -1;
 964                         getps.passwd = pwdagain;
 965                         getps.pwlen = sizeof(pwdagain)-1;
 966                         getps.echo = "Enter it again: ";
 967                         getps.flags = GETP_WAITFILL;
 968                         n = xgetpasswd(&getps);
 969                         if (n == NOSIZE) xerror(NO, NO, YES, "getting password again");
 970                         if (n == ((size_t)-2)) xexit(1);
 971                         if (strncmp(pwdask, pwdagain, sizeof(pwdagain)-1) != 0) {
 972                                 tfc_esay("Passwords are different, try again");
 973                                 goto _pwdagain;
 974                         }
 975                 }
 976                 if (verbose) say_hint(pwdask, n, "Password hint");
 977                 skein(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, pwdask, n);
 978                 memset(pwdask, 0, sizeof(pwdask));
 979                 memset(pwdagain, 0, sizeof(pwdagain));
 980         }
 981         else {
 982                 if (skeinfd(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, kfd, keyoffset, maxkeylen) != YES)
 983                         xerror(NO, NO, YES, "hashing key");
 984         }
 985
 986         if (rawkey == NO) {
 987                 if (tfc_saltsz > 0) {
 988                         memcpy(tfc_salt+tfc_saltsz, key, TF_FROM_BITS(TFC_KEY_BITS));
 989                         skein(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, tfc_salt, tfc_saltsz+TF_FROM_BITS(TFC_KEY_BITS));
 990                 }
 991                 if (nr_turns > 1) for (x = 0; x < nr_turns; x++)
 992                         skein(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
 993                 memset(tfc_salt, 0, TFC_MAX_SALT);
 994         }
 995
 996         if (ctr_mode == TFC_MODE_XTS && rawkey == NO) {
 997                 skein(xtskey, TF_NR_KEY_BITS, mackey_opt ? mackey : NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
 998         }
 999
1000         if (genkeyf) {
1001                 int krfd;
1002                 tfc_yesno xtskeyset = NO;
1003
1004                 pblk = key;
1005                 if (!strcmp(genkeyf, "-")) krfd = 1;
1006                 else krfd = open(genkeyf, O_WRONLY | O_CREAT | O_LARGEFILE | write_flags, 0666);
1007                 if (krfd == -1) xerror(NO, NO, YES, "%s", genkeyf);
1008 _xts2genkey:    if (xwrite(krfd, pblk, TF_FROM_BITS(TFC_KEY_BITS)) == NOSIZE) xerror(NO, NO, YES, "%s", genkeyf);
1009                 if (do_fsync && fsync(krfd) == -1) xerror(NO, NO, YES, "%s", genkeyf);
1010                 if (verbose && xtskeyset == NO) {
1011                         tfc_esay("%s: password hashing done", tfc_format_pid(progname));
1012                         tfc_esay("%s: rawkey written to %s.", tfc_format_pid(progname), genkeyf);
1013                         tfc_esay("%s: Have a nice day!", tfc_format_pid(progname));
1014                 }
1015
1016                 if (ctr_mode == TFC_MODE_XTS) {
1017                         if (xtskeyset == NO) {
1018                                 pblk = xtskey;
1019                                 xtskeyset = YES;
1020                                 goto _xts2genkey;
1021                         }
1022                 }
1023
1024                 fchmod(krfd, 0600);
1025                 xclose(krfd);
1026                 xexit(0);
1027         }
1028
1029         if (iseek_blocks && (do_edcrypt == TFC_DO_DECRYPT && do_mac != NO)) {
1030                 if (verbose) tfc_esay("%s: disabling signature verification on "
1031                         "requested partial decryption.", tfc_format_pid(progname));
1032                 do_mac = NO;
1033         }
1034
1035         if (do_mac != NO) {
1036                 if (mackey_opt == TFC_MACKEY_RAWKEY) skein(mackey, TF_MAX_BITS, key, key, TF_FROM_BITS(TFC_KEY_BITS));
1037                 if (ctr_mode < TFC_MODE_OCB) {
1038                         if (verbose) tfc_esay("%s: doing MAC calculation, processing speed "
1039                                 "will be slower.", tfc_format_pid(progname));
1040                         if (mackey_opt) skein_init_key(&sk, mackey, macbits);
1041                         else skein_init(&sk, macbits);
1042                 }
1043         }
1044
1045         if (!counter_file && counter_opt <= TFC_CTR_SHOW && ctr_mode != TFC_MODE_ECB) {
1046                 skein(ctr, TF_TO_BITS(ctrsz), mackey_opt ? mackey : NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
1047         }
1048
1049         tf_convkey(key);
1050         if (ctr_mode == TFC_MODE_XTS) tf_convkey(xtskey);
1051         if (do_full_key == NO) {
1052                 if (!tweakf) skein(tweak, TF_NR_TWEAK_BITS, NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
1053                 tf_tweak_set(key, tweak);
1054         }
1055         if (ctr_mode == TFC_MODE_ECB) goto _ctrskip2;
1056
1057         if (counter_opt == TFC_CTR_ZERO) memset(ctr, 0, ctrsz);
1058
1059         tfc_data_to_words64(&iseek_blocks, sizeof(iseek_blocks));
1060         tf_ctr_set(ctr, &iseek_blocks, sizeof(iseek_blocks));
1061         if (do_mac == TFC_MAC_JUST_VRFY2) memcpy(svctr, ctr, TF_BLOCK_SIZE);
1062
1063         if (counter_opt == TFC_CTR_SHOW) {
1064                 switch (do_outfmt) {
1065                         case TFC_OUTFMT_B64: tfc_printbase64(stderr, ctr, ctrsz, YES); break;
1066                         case TFC_OUTFMT_RAW: xwrite(2, ctr, ctrsz); break;
1067                         case TFC_OUTFMT_HEX: mehexdump(ctr, ctrsz, ctrsz, YES); break;
1068                 }
1069         }
1070         else if (counter_opt == TFC_CTR_RAND) tfc_getrandom(ctr, ctrsz);
1071
1072 _ctrskip2:
1073         if (kfd != -1) {
1074                 xclose(kfd);
1075                 kfd = -1;
1076         }
1077         if (verbose) tfc_esay("%s: password hashing done", tfc_format_pid(progname));
1078
1079         if (overwrite_source && srcfname) argv[idx] = srcfname;
1080
1081 _plain:
1082         if (argv[idx]) {
1083                 if (!strcmp(argv[idx], "-")) dfd = 1;
1084                 else dfd = open(argv[idx], O_RDWR | O_LARGEFILE | write_flags, 0666);
1085                 if (dfd == -1) {
1086                         dfd = open(argv[idx], O_WRONLY | O_CREAT | O_LARGEFILE | write_flags, 0666);
1087                         if (dfd == -1) xerror(NO, NO, YES, "%s", argv[idx]);
1088                 }
1089                 dstfname = argv[idx];
1090                 idx++;
1091         }
1092
1093         if (oseek) {
1094                 if (lseek(dfd, oseek, SEEK_SET) == -1)
1095                         xerror(ignore_seek_errors, NO, NO, "%s: seek failed", dstfname);
1096         }
1097
1098         for (x = 1; x < NSIG; x++) signal(x, SIG_IGN);
1099         memset(&sigact, 0, sizeof(sigact));
1100         sigact.sa_flags = SA_RESTART;
1101         sigact.sa_handler = print_crypt_status;
1102         sigaction(SIGUSR1, &sigact, NULL);
1103         sigaction(SIGALRM, &sigact, NULL);
1104         if (status_timer) setup_next_alarm(status_timer > 1000000 ? 1000000 : status_timer);
1105         sigact.sa_handler = change_status_width;
1106         sigaction(SIGQUIT, &sigact, NULL);
1107         sigact.sa_handler = change_status_timer;
1108         sigaction(SIGUSR2, &sigact, NULL);
1109         if (quiet == NO) {
1110                 sigact.sa_handler = print_crypt_status;
1111                 sigaction(SIGINT, &sigact, NULL);
1112                 sigaction(SIGTERM, &sigact, NULL);
1113                 sigaction(SIGTSTP, &sigact, NULL);
1114         }
1115         else {
1116                 sigact.sa_handler = exit_sigterm;
1117                 sigaction(SIGINT, &sigact, NULL);
1118                 sigaction(SIGTERM, &sigact, NULL);
1119                 sigact.sa_handler = handle_sigtstp;
1120                 sigaction(SIGTSTP, &sigact, NULL);
1121         }
1122         memset(&sigact, 0, sizeof(struct sigaction));
1123
1124         tfc_getcurtime(&delta_time);
1125
1126         errno = 0;
1127         if (counter_opt == TFC_CTR_RAND && ctr_mode != TFC_MODE_ECB) {
1128                 pblk = ctr;
1129                 lio = lrem = ctrsz;
1130                 ldone = 0;
1131 _ctrwagain:     lio = xwrite(dfd, pblk, lrem);
1132                 if (lio != NOSIZE) ldone += lio;
1133                 else xerror(NO, NO, NO, "%s", dstfname);
1134                 if (do_fsync && fsync(dfd) == -1) xerror(NO, NO, NO, "%s", dstfname);
1135                 if (lio < lrem) {
1136                         pblk += lio;
1137                         lrem -= lio;
1138                         goto _ctrwagain;
1139                 }
1140                 total_processed_dst += ldone;
1141                 delta_processed += ldone;
1142         }
1143
1144         if (ctr_mode == TFC_MODE_STREAM) tfe_init_iv(&tfe, key, ctr);
1145
1146         if (do_mac == TFC_MAC_JUST_VRFY2) {
1147                 rwd = tfc_fdgetpos(sfd);
1148                 if (rwd == NOFSIZE) {
1149                         tfc_esay("%s: WARNING: input is not seekable, disabling MAC testing mode", tfc_format_pid(progname));
1150                         do_mac = TFC_MAC_VRFY;
1151                 }
1152                 goto _nodecrypt_again_vrfy2;
1153
1154 _decrypt_again_vrfy2:
1155                 if (lseek(sfd, (off_t)rwd, SEEK_SET) == ((off_t)-1)) {
1156                         xerror(ignore_seek_errors, NO, YES, "MAC testing seek failed");
1157                 }
1158                 total_processed_src = rwd;
1159                 memcpy(ctr, svctr, TF_BLOCK_SIZE);
1160                 memset(svctr, 0, TF_BLOCK_SIZE);
1161         }
1162
1163 _nodecrypt_again_vrfy2:
1164         loopcnt = 1;
1165         errno = 0;
1166         do_stop = NO;
1167         while (1) {
1168                 if (do_stop) break;
1169                 pblk = srcblk;
1170                 ldone = 0;
1171                 lrem = lblock = blk_len_adj(maxlen, total_processed_src, blksize);
1172                 if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(sfd);
1173 _ragain:        lio = xread(sfd, pblk, lrem);
1174                 if (lio == 0) {
1175                         if ((do_read_loops != 0 && sfd != 0) && (loopcnt < do_read_loops)) {
1176                                 lseek(sfd, 0L, SEEK_SET);
1177                                 loopcnt++;
1178                                 goto _ragain;
1179                         }
1180
1181                         do_stop = YES;
1182                 }
1183                 if (lio != NOSIZE) ldone += lio;
1184                 else {
1185                         if (errno != EIO && catch_all_errors != YES)
1186                                 xerror(NO, NO, NO, "%s", srcfname);
1187                         switch (error_action) {
1188                                 case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", srcfname); goto _ragain; break;
1189                                 case TFC_ERRACT_SYNC:
1190                                 case TFC_ERRACT_LSYNC:
1191                                         xerror(YES, NO, NO, "%s", srcfname);
1192                                         lio = ldone = lrem = lblock;
1193                                         memset(srcblk, 0, lio);
1194                                         if (rdpos == NOFSIZE) lseek(sfd, lio, SEEK_CUR);
1195                                         else lseek(sfd, rdpos + lio, SEEK_SET);
1196                                         break;
1197                                 default: xerror(NO, NO, NO, "%s", srcfname); break;
1198                         }
1199                 }
1200                 if (lio && lio < lrem) {
1201                         pblk += lio;
1202                         lrem -= lio;
1203                         goto _ragain;
1204                 }
1205                 total_processed_src += ldone;
1206
1207                 if (do_pad && (ldone % TF_BLOCK_SIZE)) {
1208                         size_t orig = ldone;
1209                         ldone += (TF_BLOCK_SIZE - (ldone % TF_BLOCK_SIZE));
1210                         if (ldone > blksize) ldone = blksize;
1211                         memset(srcblk+orig, 0, sizeof(srcblk)-orig);
1212                 }
1213
1214                 if (do_mac == TFC_MAC_SIGN && ctr_mode < TFC_MODE_OCB)
1215                         skein_update(&sk, srcblk, ldone);
1216
1217                 if (ctr_mode == TFC_MODE_CTR) tf_ctr_crypt(key, ctr, dstblk, srcblk, ldone);
1218                 else if (ctr_mode == TFC_MODE_STREAM) tf_stream_crypt(&tfe, dstblk, srcblk, ldone);
1219                 else if (ctr_mode == TFC_MODE_XTS && do_edcrypt == TFC_DO_ENCRYPT)
1220                         tf_xts_encrypt(key, xtskey, ctr, dstblk, srcblk, ldone, xtsblocks);
1221                 else if (ctr_mode == TFC_MODE_XTS && do_edcrypt == TFC_DO_DECRYPT)
1222                         tf_xts_decrypt(key, xtskey, ctr, dstblk, srcblk, ldone, xtsblocks);
1223                 else if (ctr_mode == TFC_MODE_ECB && do_edcrypt == TFC_DO_ENCRYPT)
1224                         tf_ecb_encrypt(key, dstblk, srcblk, ldone);
1225                 else if (ctr_mode == TFC_MODE_ECB && do_edcrypt == TFC_DO_DECRYPT)
1226                         tf_ecb_decrypt(key, dstblk, srcblk, ldone);
1227                 else if (ctr_mode == TFC_MODE_CBC && do_edcrypt == TFC_DO_ENCRYPT)
1228                         tf_cbc_encrypt(key, ctr, dstblk, srcblk, ldone);
1229                 else if (ctr_mode == TFC_MODE_CBC && do_edcrypt == TFC_DO_DECRYPT)
1230                         tf_cbc_decrypt(key, ctr, dstblk, srcblk, ldone);
1231
1232                 else if (ctr_mode == TFC_MODE_OCB && do_edcrypt == TFC_DO_ENCRYPT)
1233                         tf_ocb_encrypt(key, ctr, dstblk, do_mac == TFC_MAC_SIGN ? macresult : NULL, srcblk, ldone, xtsblocks);
1234                 else if (ctr_mode == TFC_MODE_OCB && do_edcrypt == TFC_DO_DECRYPT)
1235                         tf_ocb_decrypt(key, ctr, dstblk, do_mac >= TFC_MAC_VRFY ? macresult : NULL, srcblk, ldone, xtsblocks);
1236
1237                 else if (ctr_mode == TFC_MODE_PLAIN)
1238                         memcpy(dstblk, srcblk, ldone);
1239
1240                 if (do_mac >= TFC_MAC_VRFY && ctr_mode < TFC_MODE_OCB)
1241                         skein_update(&sk, dstblk, ldone);
1242                 if (do_mac >= TFC_MAC_JUST_VRFY) goto _nowrite;
1243
1244                 pblk = dstblk;
1245                 lrem = ldone;
1246                 ldone = 0;
1247 _wagain:        lio = xwrite(dfd, pblk, lrem);
1248                 if (lio != NOSIZE) ldone += lio;
1249                 else xerror(NO, NO, NO, "%s", dstfname);
1250                 if (do_fsync && fsync(dfd) == -1) xerror(NO, NO, NO, "%s", dstfname);
1251                 if (lio < lrem) {
1252                         pblk += lio;
1253                         lrem -= lio;
1254                         goto _wagain;
1255                 }
1256                 total_written_dst += ldone;
1257 _nowrite:       total_processed_dst += ldone;
1258                 delta_processed += ldone;
1259
1260                 if (maxlen != NOFSIZE && total_processed_src >= maxlen) {
1261                         do_stop = YES;
1262                         break;
1263                 }
1264         }
1265
1266         errno = 0;
1267         if (do_mac >= TFC_MAC_VRFY) {
1268                 if (!do_mac_file) {
1269                         pblk = macvrfy;
1270                         ldone = 0;
1271                         lrem = lblock = TF_FROM_BITS(macbits);
1272                         if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(sfd);
1273 _macragain:             lio = xread(sfd, pblk, lrem);
1274                         if (lio != NOSIZE) ldone += lio;
1275                         else {
1276                                 if (errno != EIO && catch_all_errors != YES)
1277                                         xerror(NO, NO, NO, "%s", srcfname);
1278                                 switch (error_action) {
1279                                         case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", srcfname); goto _macragain; break;
1280                                         case TFC_ERRACT_SYNC:
1281                                         case TFC_ERRACT_LSYNC:
1282                                                 xerror(YES, NO, NO, "%s", srcfname);
1283                                                 lio = ldone = lrem = lblock;
1284                                                 memset(macvrfy, 0, lio);
1285                                                 if (rdpos == NOFSIZE) lseek(sfd, lio, SEEK_CUR);
1286                                                 else lseek(sfd, rdpos + lio, SEEK_SET);
1287                                                 break;
1288                                         default: xerror(NO, NO, NO, "%s", srcfname); break;
1289                                 }
1290                         }
1291                         if (lio && lio < lrem) {
1292                                 pblk += lio;
1293                                 lrem -= lio;
1294                                 goto _macragain;
1295                         }
1296                         total_processed_src += ldone;
1297                 }
1298                 else {
1299                         int mfd;
1300
1301                         if (!strcmp(do_mac_file, "-")) mfd = 0;
1302                         else mfd = open(do_mac_file, O_RDONLY | O_LARGEFILE);
1303                         if (mfd == -1) xerror(YES, NO, NO, "%s", do_mac_file);
1304                         lio = ldone = xread(mfd, tmpdata, sizeof(tmpdata));
1305                         if (lio == NOSIZE) xerror(NO, NO, YES, "%s", do_mac_file);
1306                         if (!memcmp(tmpdata, TFC_ASCII_TFC_MAC_FOURCC, TFC_ASCII_TFC_MAC_FOURCC_LEN)) {
1307                                 memmove(tmpdata, tmpdata+TFC_ASCII_TFC_MAC_FOURCC_LEN,
1308                                         sizeof(tmpdata)-TFC_ASCII_TFC_MAC_FOURCC_LEN);
1309                                 lio = TF_FROM_BITS(macbits);
1310                                 base64_decode((char *)macvrfy, lio, (char *)tmpdata, sizeof(tmpdata));
1311                         }
1312                         else memcpy(macvrfy, tmpdata, TF_FROM_BITS(macbits));
1313                         xclose(mfd);
1314                 }
1315
1316                 if (ldone < TF_FROM_BITS(macbits)) {
1317                         if (quiet == NO) tfc_esay("%s: short signature (%zu), "
1318                                 "not verifying", tfc_format_pid(progname), ldone);
1319                         exitcode = 1;
1320                         goto _shortmac;
1321                 }
1322
1323                 if (ctr_mode < TFC_MODE_OCB) skein_final(macresult, &sk);
1324                 else skein(macresult, macbits, mackey, macresult, TF_FROM_BITS(macbits));
1325
1326                 if (ctr_mode == TFC_MODE_CTR) tf_ctr_crypt(key, ctr, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1327                 else if (ctr_mode == TFC_MODE_STREAM) tf_stream_crypt(&tfe, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1328                 else if (ctr_mode == TFC_MODE_XTS) tf_xts_decrypt(key, xtskey, ctr, tmpdata, macvrfy, TF_FROM_BITS(macbits), xtsblocks);
1329                 else if (ctr_mode == TFC_MODE_ECB) tf_ecb_decrypt(key, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1330                 else if (ctr_mode == TFC_MODE_CBC) tf_cbc_decrypt(key, ctr, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1331                 else if (ctr_mode == TFC_MODE_OCB) tf_ocb_decrypt(key, ctr, tmpdata, NULL, macvrfy, TF_FROM_BITS(macbits), xtsblocks);
1332
1333                 if (!memcmp(tmpdata, macresult, TF_FROM_BITS(macbits))) {
1334                         if (quiet == NO) {
1335                                 tfc_esay("%s: signature is good", tfc_format_pid(progname));
1336                                 if (verbose) {
1337                                         if (do_outfmt == TFC_OUTFMT_B64) tfc_printbase64(stderr, macresult, TF_FROM_BITS(macbits), YES);
1338                                         else mehexdump(macresult, TF_FROM_BITS(macbits), TF_FROM_BITS(macbits), YES);
1339                                 }
1340                         }
1341                         if (do_mac == TFC_MAC_JUST_VRFY2) {
1342                                 if (verbose) tfc_esay("%s: -u: MAC signature is valid, proceeding with decrypting it again", tfc_format_pid(progname));
1343                                 do_mac = TFC_MAC_DROP;
1344                                 goto _decrypt_again_vrfy2;
1345                         }
1346                 }
1347                 else {
1348                         if (quiet == NO) {
1349                                 tfc_esay("%s: signature is BAD: "
1350                                 "wrong password, key, mode, or file is not signed", tfc_format_pid(progname));
1351                                 if (do_mac == TFC_MAC_JUST_VRFY2) tfc_esay("%s: -u: MAC signature is invalid, not decrypting it again", tfc_format_pid(progname));
1352                         }
1353                         exitcode = 1;
1354                 }
1355
1356 _shortmac:      memset(macvrfy, 0, sizeof(macvrfy));
1357                 memset(macresult, 0, sizeof(macresult));
1358                 memset(tmpdata, 0, sizeof(tmpdata));
1359         }
1360
1361         else if (do_mac == TFC_MAC_SIGN) {
1362                 if (ctr_mode < TFC_MODE_OCB) skein_final(macresult, &sk);
1363                 else skein(macresult, macbits, mackey, macresult, TF_FROM_BITS(macbits));
1364
1365                 if (ctr_mode == TFC_MODE_CTR) tf_ctr_crypt(key, ctr, tmpdata, macresult, TF_FROM_BITS(macbits));
1366                 else if (ctr_mode == TFC_MODE_STREAM) tf_stream_crypt(&tfe, tmpdata, macresult, TF_FROM_BITS(macbits));
1367                 else if (ctr_mode == TFC_MODE_XTS) tf_xts_encrypt(key, xtskey, ctr, tmpdata, macresult, TF_FROM_BITS(macbits), xtsblocks);
1368                 else if (ctr_mode == TFC_MODE_ECB) tf_ecb_encrypt(key, tmpdata, macresult, TF_FROM_BITS(macbits));
1369                 else if (ctr_mode == TFC_MODE_CBC) tf_cbc_encrypt(key, ctr, tmpdata, macresult, TF_FROM_BITS(macbits));
1370                 else if (ctr_mode == TFC_MODE_OCB) tf_ocb_encrypt(key, ctr, tmpdata, NULL, macresult, TF_FROM_BITS(macbits), xtsblocks);
1371                 memset(macresult, 0, sizeof(macresult));
1372
1373                 if (!do_mac_file) {
1374                         pblk = tmpdata;
1375                         lio = lrem = TF_FROM_BITS(macbits);
1376                         ldone = 0;
1377 _macwagain:             lio = xwrite(dfd, pblk, lrem);
1378                         if (lio != NOSIZE) ldone += lio;
1379                         else xerror(NO, NO, NO, "%s", dstfname);
1380                         if (do_fsync && fsync(dfd) == -1) xerror(NO, NO, NO, "%s", dstfname);
1381                         if (lio < lrem) {
1382                                 pblk += lio;
1383                                 lrem -= lio;
1384                                 goto _macwagain;
1385                         }
1386                         total_processed_dst += ldone;
1387                         delta_processed += ldone;
1388                 }
1389                 else {
1390                         int mfd;
1391
1392                         if (!strcmp(do_mac_file, "-")) mfd = 1;
1393                         else mfd = open(do_mac_file, O_WRONLY | O_CREAT | O_LARGEFILE | write_flags, 0666);
1394                         if (mfd == -1) xerror(YES, NO, NO, "%s", do_mac_file);
1395                         if (do_outfmt == TFC_OUTFMT_B64) {
1396                                 memcpy(macvrfy, tmpdata, TF_FROM_BITS(macbits));
1397                                 memset(tmpdata, 0, TFC_TMPSIZE);
1398                                 memcpy(tmpdata, TFC_ASCII_TFC_MAC_FOURCC, TFC_ASCII_TFC_MAC_FOURCC_LEN);
1399                                 base64_encode((char *)tmpdata+TFC_ASCII_TFC_MAC_FOURCC_LEN, (char *)macvrfy, TF_FROM_BITS(macbits));
1400                                 lrem = strnlen((char *)tmpdata, sizeof(tmpdata));
1401                                 if (lrem) {
1402                                         tmpdata[lrem] = '\n';
1403                                         lrem++;
1404                                 }
1405                                 lio = xwrite(mfd, tmpdata, lrem);
1406                         }
1407                         else lio = xwrite(mfd, tmpdata, TF_FROM_BITS(macbits));
1408                         if (lio == NOSIZE) xerror(NO, NO, YES, "%s", do_mac_file);
1409                         if (do_fsync && fsync(mfd) == -1) xerror(NO, NO, YES, "%s", do_mac_file);
1410                         xclose(mfd);
1411                 }
1412
1413                 memset(macvrfy, 0, sizeof(macvrfy));
1414                 memset(macresult, 0, sizeof(macresult));
1415                 memset(tmpdata, 0, sizeof(tmpdata));
1416         }
1417
1418         if (verbose || status_timer || (do_stop == YES && quiet == NO)) print_crypt_status(0);
1419
1420         xexit(exitcode);
1421         return -1;
1422 }