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, "append"))
 315                                                 write_flags |= O_APPEND;
 316                                         else if (!strcmp(s, "fsync"))
 317                                                 do_fsync = YES;
 318                                         else if (!strcmp(s, "pad"))
 319                                                 do_pad = YES;
 320                                         else if (!strcmp(s, "xtime"))
 321                                                 do_preserve_time = YES;
 322                                         else if (!strcmp(s, "gibsize"))
 323                                                 do_stats_in_gibs = YES;
 324                                         else if (!strcmp(s, "plainstats"))
 325                                                 do_statline_dynamic = NO;
 326                                         else if (!strcmp(s, "statless"))
 327                                                 do_less_stats = YES;
 328                                         else if (!strcmp(s, "norepeat"))
 329                                                 no_repeat = YES;
 330                                         else if (!strncmp(s, "prompt", 6) && *(s+6) == '=')
 331                                                 pw_prompt = s+7;
 332                                         else if (!strncmp(s, "macprompt", 9) && *(s+9) == '=')
 333                                                 mac_pw_prompt = s+10;
 334                                         else if (!strcmp(s, "shorthex"))
 335                                                 do_full_hexdump = NO;
 336                                         else if (!strcmp(s, "fullkey"))
 337                                                 do_full_key = YES;
 338                                         else if (!strcmp(s, "showsecrets"))
 339                                                 show_secrets = YES;
 340                                         else if (!strcmp(s, "finished"))
 341                                                 show_when_done = YES;
 342                                         else if (!strcmp(s, "pid"))
 343                                                 show_pid = YES;
 344                                         else if (!strncmp(s, "readloops", 9) && *(s+9) == '=') {
 345                                                 do_read_loops = tfc_humanfsize(s+10, &stoi);
 346                                                 if (!str_empty(stoi)) do_read_loops = NOSIZE;
 347                                         }
 348                                         else if (!strncmp(s, "logfile", 7) && *(s+7) == '=')
 349                                                 open_log(s+8);
 350                                         else if (!strncmp(s, "iobs", 4) && *(s+4) == '=') {
 351                                                 s += 5;
 352                                                 blksize = (size_t)tfc_humanfsize(s, &stoi);
 353                                                 if (!str_empty(stoi)) {
 354                                                         blksize = (size_t)tfc_fnamesize(s, YES);
 355                                                         blksize = (size_t)tfc_modifysize((tfc_fsize)blksize, strchr(s, ':'));
 356                                                         if (blksize == NOSIZE) xerror(NO, YES, YES,
 357                                                         "%s: invalid block size value", s);
 358                                                 }
 359                                                 else blksize = (size_t)tfc_modifysize((tfc_fsize)blksize, strchr(s, ':'));
 360                                                 if (blksize < TF_BLOCK_SIZE) xerror(NO, YES, YES,
 361                                                         "%s: block size is lesser than TF_BLOCK_SIZE (%u bytes)", s, TFC_U(TF_BLOCK_SIZE));
 362                                                 if (blksize > TFC_BLKSIZE) xerror(NO, YES, YES,
 363                                                         "%s: block size exceeds %u bytes",
 364                                                         s, TFC_U(TFC_BLKSIZE));
 365                                         }
 366                                         else if (!strncmp(s, "xtsblocks", 9) && *(s+9) == '=') {
 367                                                 s += 10;
 368                                                 xtsblocks = (size_t)tfc_humanfsize(s, &stoi);
 369                                                 if (!str_empty(stoi)) {
 370                                                         xtsblocks = (size_t)tfc_fnamesize(s, YES);
 371                                                         xtsblocks = (size_t)tfc_modifysize((tfc_fsize)xtsblocks, strchr(s, ':'));
 372                                                         if (xtsblocks == NOSIZE) xerror(NO, YES, YES,
 373                                                         "%s: invalid blocks per xts block value", s);
 374                                                 }
 375                                                 else xtsblocks = (size_t)tfc_modifysize((tfc_fsize)xtsblocks, strchr(s, ':'));
 376                                                 if (TFC_BLKSIZE % xtsblocks) xerror(NO, YES, YES,
 377                                                         "%s: nr of blocks per xts block is not round to %u bytes",
 378                                                         s, TFC_U(TFC_BLKSIZE));
 379                                                 if ((xtsblocks * TF_BLOCK_SIZE) > TFC_BLKSIZE) xerror(NO, YES, YES,
 380                                                         "%s: nr of blocks per xts block exceeds %u bytes",
 381                                                         s, TFC_U(TFC_BLKSIZE));
 382                                         }
 383                                         else if (!strncmp(s, "iseek", 5) && *(s+5) == '=') {
 384                                                 s += 6;
 385                                                 iseek = tfc_humanfsize(s, &stoi);
 386                                                 if (!str_empty(stoi)) {
 387                                                         iseek = tfc_fnamesize(s, YES);
 388                                                         iseek = tfc_modifysize(iseek, strchr(s, ':'));
 389                                                         if (iseek == NOFSIZE) xerror(NO, YES, YES,
 390                                                         "%s: invalid iseek value", s);
 391                                                 }
 392                                                 else iseek = tfc_modifysize(iseek, strchr(s, ':'));
 393                                                 if (ctr_mode != TFC_MODE_PLAIN && iseek % TF_BLOCK_SIZE)
 394                                                         xerror(NO, YES, YES,
 395                                                                 "%s: not round to TF block size "
 396                                                                 "of %u bytes",
 397                                                                 s, TFC_U(TF_BLOCK_SIZE));
 398                                                 iseek_blocks = iseek / TF_BLOCK_SIZE;
 399                                         }
 400                                         else if (!strncmp(s, "ixseek", 6) && *(s+6) == '=') {
 401                                                 s += 7;
 402                                                 iseek = tfc_humanfsize(s, &stoi);
 403                                                 if (!str_empty(stoi)) {
 404                                                         iseek = tfc_fnamesize(s, YES);
 405                                                         iseek = tfc_modifysize(iseek, strchr(s, ':'));
 406                                                         if (iseek == NOFSIZE) xerror(NO, YES, YES,
 407                                                                 "%s: invalid ixseek value", s);
 408                                                 }
 409                                                 else iseek = tfc_modifysize(iseek, strchr(s, ':'));
 410                                         }
 411                                         else if (!strncmp(s, "ictr", 4) && *(s+4) == '=') {
 412                                                 s += 5;
 413                                                 iseek_blocks = tfc_humanfsize(s, &stoi);
 414                                                 if (!str_empty(stoi)) {
 415                                                         iseek_blocks = tfc_fnamesize(s, YES);
 416                                                         if (iseek_blocks == NOFSIZE)
 417                                                                 xerror(NO, YES, YES,
 418                                                                 "%s: invalid ictr value", s);
 419                                                         iseek_blocks /= TF_BLOCK_SIZE;
 420                                                         iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 421                                                 }
 422                                                 else iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 423                                         }
 424                                         else if (!strncmp(s, "ixctr", 5) && *(s+5) == '=') {
 425                                                 s += 6;
 426                                                 iseek_blocks = tfc_humanfsize(s, &stoi);
 427                                                 if (!str_empty(stoi)) {
 428                                                         iseek_blocks = tfc_fnamesize(s, YES);
 429                                                         iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 430                                                         if (iseek_blocks == NOFSIZE)
 431                                                                 xerror(NO, YES, YES,
 432                                                                 "%s: invalid ixctr value", s);
 433                                                 }
 434                                                 else iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 435                                                 if (iseek_blocks % TF_BLOCK_SIZE)
 436                                                         xerror(NO, YES, YES,
 437                                                         "%s: not round to TF block size "
 438                                                         "of %u bytes", s, TFC_U(TF_BLOCK_SIZE));
 439                                                 iseek_blocks /= TF_BLOCK_SIZE;
 440                                         }
 441                                         else if (!strncmp(s, "oseek", 5) && *(s+5) == '=') {
 442                                                 s += 6;
 443                                                 oseek = tfc_humanfsize(s, &stoi);
 444                                                 if (!str_empty(stoi)) {
 445                                                         oseek = tfc_fnamesize(s, YES);
 446                                                         oseek = tfc_modifysize(oseek, strchr(s, ':'));
 447                                                         if (oseek == NOFSIZE) xerror(NO, YES, YES,
 448                                                         "%s: invalid oseek value", s);
 449                                                 }
 450                                                 else oseek = tfc_modifysize(oseek, strchr(s, ':'));
 451                                         }
 452                                         else if (!strncmp(s, "count", 5) && *(s+5) == '=') {
 453                                                 s += 6;
 454                                                 maxlen = tfc_humanfsize(s, &stoi);
 455                                                 if (!str_empty(stoi)) {
 456                                                         maxlen = tfc_fnamesize(s, YES);
 457                                                         maxlen = tfc_modifysize(maxlen, strchr(s, ':'));
 458                                                         if (maxlen == NOFSIZE) xerror(NO, YES, YES,
 459                                                         "%s: invalid count value", s);
 460                                                 }
 461                                                 else maxlen = tfc_modifysize(maxlen, strchr(s, ':'));
 462                                                 if (counter_opt == TFC_CTR_HEAD)
 463                                                         maxlen += TF_BLOCK_SIZE;
 464                                         }
 465                                         else if (!strncmp(s, "ftrunc", 6) && *(s+6) == '=') {
 466                                                 s += 7;
 467                                                 if (!strcmp(s, "tail")) {
 468                                                         do_ftrunc = TFC_FTRUNC_TAIL;
 469                                                         ftrunc_dfd = NOFSIZE;
 470                                                 }
 471                                                 else {
 472                                                         do_ftrunc = TFC_DO_FTRUNC;
 473                                                         ftrunc_dfd = tfc_humanfsize(s, &stoi);
 474                                                         if (!str_empty(stoi)) {
 475                                                                 ftrunc_dfd = tfc_fnamesize(s, YES);
 476                                                                 ftrunc_dfd = tfc_modifysize(ftrunc_dfd, strchr(s, ':'));
 477                                                                 if (ftrunc_dfd == NOFSIZE) xerror(NO, YES, YES,
 478                                                                 "%s: invalid ftrunc value", s);
 479                                                         }
 480                                                         else ftrunc_dfd = tfc_modifysize(ftrunc_dfd, strchr(s, ':'));
 481                                                 }
 482                                         }
 483                                         else if (!strncmp(s, "xkey", 4) && *(s+4) == '=') {
 484                                                 s += 5;
 485                                                 maxkeylen = tfc_humanfsize(s, &stoi);
 486                                                 if (!str_empty(stoi)) {
 487                                                         maxkeylen = tfc_fnamesize(s, YES);
 488                                                         maxkeylen = tfc_modifysize(maxkeylen, strchr(s, ':'));
 489                                                         if (maxkeylen == NOSIZE)
 490                                                                 xerror(NO, YES, YES,
 491                                                                 "%s: invalid key length value", s);
 492                                                 }
 493                                                 else maxkeylen = tfc_modifysize(maxkeylen, strchr(s, ':'));
 494                                         }
 495                                         else if (!strncmp(s, "okey", 4) && *(s+4) == '=') {
 496                                                 s += 5;
 497                                                 keyoffset = tfc_humanfsize(s, &stoi);
 498                                                 if (!str_empty(stoi)) {
 499                                                         keyoffset = tfc_fnamesize(s, YES);
 500                                                         keyoffset = tfc_modifysize(keyoffset, strchr(s, ':'));
 501                                                         if (keyoffset == NOFSIZE)
 502                                                                 xerror(NO, YES, YES,
 503                                                                 "%s: invalid key offset value", s);
 504                                                 }
 505                                                 else keyoffset = tfc_modifysize(keyoffset, strchr(s, ':'));
 506                                         }
 507                                         else if (!strncmp(s, "xctr", 4) && *(s+4) == '=') {
 508                                                 s += 5;
 509                                                 ctrsz = tfc_humanfsize(s, &stoi);
 510                                                 if (!str_empty(stoi)) {
 511                                                         ctrsz = (size_t)tfc_fnamesize(s, YES);
 512                                                         ctrsz = (size_t)tfc_modifysize((tfc_fsize)ctrsz, strchr(s, ':'));
 513                                                         if (ctrsz == NOSIZE)
 514                                                                 xerror(NO, YES, YES,
 515                                                                 "%s: invalid counter length value", s);
 516                                                 }
 517                                                 else ctrsz = (size_t)tfc_modifysize((tfc_fsize)ctrsz, strchr(s, ':'));
 518                                                 if (ctrsz > TF_BLOCK_SIZE)
 519                                                         xerror(NO, YES, YES, "%s: counter size cannot exceed TF block size", s);
 520                                         }
 521                                         else xerror(NO, YES, YES, "invalid option %s", s);
 522                                 }
 523                                 break;
 524                         case 'S':
 525                                 do_mac = TFC_MAC_SIGN;
 526                                 if (strcasecmp(optarg, "mac") != 0)
 527                                         do_mac_file = optarg;
 528                                 break;
 529                         case 'M':
 530                                 do_mac = TFC_MAC_VRFY;
 531                                 if (!strcasecmp(optarg, "drop"))
 532                                         do_mac = TFC_MAC_DROP;
 533                                 else if (strcasecmp(optarg, "mac") != 0)
 534                                         do_mac_file = optarg;
 535                                 break;
 536                         case 'm':
 537                         case 'u':
 538                                 if (do_mac != TFC_MAC_VRFY)
 539                                         xerror(NO, YES, YES, "signature source was not specified");
 540                                 do_mac = TFC_MAC_JUST_VRFY;
 541                                 if (c == 'u') do_mac = TFC_MAC_JUST_VRFY2;
 542                                 break;
 543                         case 'R':
 544                         case 'Z':
 545                                 if (maxlen != NOFSIZE) {
 546                                         if (c == 'Z') genzero_nr_bytes = maxlen;
 547                                         else genrandom_nr_bytes = maxlen;
 548                                 }
 549                                 else {
 550                                         tfc_fsize t;
 551                                         if (!strcasecmp(optarg, "cbs"))
 552                                                 t = TF_BLOCK_SIZE;
 553                                         else if (!strcasecmp(optarg, "ks"))
 554                                                 t = TF_FROM_BITS(TFC_KEY_BITS);
 555                                         else if (!strcasecmp(optarg, "xks"))
 556                                                 t = TF_FROM_BITS(TFC_KEY_BITS) * 2;
 557                                         else if (!strcasecmp(optarg, "iobs"))
 558                                                 t = blksize;
 559                                         else {
 560                                                 t = tfc_humanfsize(optarg, &stoi);
 561                                                 if (!str_empty(stoi)) {
 562                                                         t = tfc_fnamesize(optarg, NO);
 563                                                         t = tfc_modifysize(t, strchr(optarg, ':'));
 564                                                 }
 565                                                 else t = tfc_modifysize(t, strchr(optarg, ':'));
 566                                         }
 567                                         if (c == 'Z') genzero_nr_bytes = maxlen = t;
 568                                         else genrandom_nr_bytes = maxlen = t;
 569                                 }
 570                                 break;
 571                         case 'a':
 572                                 do_preserve_time = YES;
 573                                 break;
 574                         case 'A':
 575                                 do_outfmt = TFC_OUTFMT_B64;
 576                                 break;
 577                         case 'W':
 578                                 do_outfmt = TFC_OUTFMT_RAW;
 579                                 break;
 580                         case 'H':
 581                                 do_outfmt = TFC_OUTFMT_HEX;
 582                                 break;
 583                         case 'q':
 584                                 quiet = YES;
 585                                 xexit_no_nl = YES;
 586                                 verbose = NO;
 587                                 do_full_hexdump = NO;
 588                                 status_timer = 0;
 589                                 break;
 590                         case 'v':
 591                                 verbose = YES;
 592                                 break;
 593                         case 'V':
 594                                 td = strtod(optarg, &stoi);
 595                                 status_timer = TFC_DTOUSECS(td);
 596                                 if (status_timer <= TFC_DTOUSECS(0) || !str_empty(stoi)) status_timer = 0;
 597                                 break;
 598                         default:
 599                                 usage();
 600                                 break;
 601                 }
 602         }
 603
 604         if (!strcmp(progname, "tfbench")) {
 605                 if (!*(argv+optind)) usage();
 606
 607                 td = strtod(*(argv+optind), &stoi);
 608                 if (td <= TFC_DTOUSECS(0) || !str_empty(stoi))
 609                         xerror(NO, YES, YES,
 610                         "%s: invalid benchmark time in seconds", *(argv+optind));
 611                 bench_timer = TFC_DTOUSECS(td);
 612                 do_benchmark(bench_timer, td);
 613         }
 614         if (genrandom_nr_bytes) {
 615                 ctr_mode = TFC_MODE_STREAM;
 616                 do_edcrypt = TFC_DO_ENCRYPT;
 617                 gen_write_bytes(*(argv+optind), oseek, genrandom_nr_bytes);
 618         }
 619         if (genzero_nr_bytes) {
 620                 ctr_mode = TFC_MODE_PLAIN;
 621                 do_edcrypt = TFC_DO_PLAIN;
 622                 gen_write_bytes(*(argv+optind), oseek, genzero_nr_bytes);
 623         }
 624
 625         if (rawkey && password)
 626                 xerror(NO, YES, YES, "Cannot use rawkey and hashing password!");
 627         if (do_edcrypt == TFC_DO_ENCRYPT && do_mac >= TFC_MAC_VRFY)
 628                 xerror(NO, YES, YES, "Cannot encrypt and verify signature!");
 629         if (do_edcrypt == TFC_DO_DECRYPT && do_mac == TFC_MAC_SIGN)
 630                 xerror(NO, YES, YES, "Cannot decrypt and calculate signature!");
 631         if (do_edcrypt == TFC_DO_DECRYPT && counter_opt == TFC_CTR_RAND)
 632                 xerror(NO, YES, YES, "Cannot decrypt and embed a generated CTR into file!");
 633         if (do_edcrypt == TFC_DO_ENCRYPT && counter_opt == TFC_CTR_HEAD)
 634                 xerror(NO, YES, YES, "Cannot encrypt and read CTR from source!");
 635         if (overwrite_source && counter_opt == TFC_CTR_RAND)
 636                 xerror(NO, YES, YES, "Cannot embed a CTR into file when overwriting it!");
 637         if (ctr_mode == TFC_MODE_PLAIN
 638         && (do_edcrypt || do_mac || rawkey
 639         || mackey_opt || counter_opt || counter_file))
 640                 xerror(NO, YES, YES, "Encryption facility is disabled when in plain IO mode.");
 641
 642         errno = 0;
 643         do_stop = NO;
 644
 645         if (saltf) {
 646                 int saltfd;
 647
 648                 memset(tfc_salt, 0, TFC_MAX_SALT);
 649                 tfc_saltsz = 0;
 650                 if (!strcasecmp(saltf, "disable")) goto _nosalt;
 651
 652                 if (!strcmp(saltf, "-")) saltfd = 0;
 653                 else saltfd = open(saltf, O_RDONLY | O_LARGEFILE);
 654                 if (saltfd == -1) xerror(NO, NO, YES, "%s", saltf);
 655                 lio = xread(saltfd, tfc_salt, TFC_MAX_SALT - TF_FROM_BITS(TFC_KEY_BITS));
 656                 if (lio == NOSIZE) xerror(NO, NO, YES, "%s", saltf);
 657                 tfc_saltsz = lio;
 658                 xclose(saltfd);
 659         }
 660
 661 _nosalt:
 662         if (mackey_opt == TFC_MACKEY_FILE && mackeyf) {
 663                 int mkfd = -1;
 664                 tfc_yesno do_stop;
 665
 666                 if (!strcmp(mackeyf, "-")) mkfd = 0;
 667                 else mkfd = open(mackeyf, O_RDONLY | O_LARGEFILE);
 668                 if (mkfd == -1) xerror(NO, NO, YES, "%s", mackeyf);
 669
 670                 skein_init(&sk, TFC_KEY_BITS);
 671
 672                 do_stop = NO;
 673                 while (1) {
 674                         if (do_stop) break;
 675                         pblk = tmpdata;
 676                         ldone = 0;
 677                         lrem = lblock = sizeof(tmpdata);
 678                         if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(mkfd);
 679 _mkragain:              lio = xread(mkfd, pblk, lrem);
 680                         if (lio == 0 && do_stop == NO) do_stop = YES;
 681                         if (lio != NOSIZE) ldone += lio;
 682                         else {
 683                                 if (errno != EIO && catch_all_errors != YES)
 684                                         xerror(NO, NO, NO, "%s", mackeyf);
 685                                 switch (error_action) {
 686                                         case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", mackeyf); goto _mkragain; break;
 687                                         case TFC_ERRACT_SYNC:
 688                                         case TFC_ERRACT_LSYNC:
 689                                                 xerror(YES, NO, NO, "%s", mackeyf);
 690                                                 lio = ldone = lrem = lblock;
 691                                                 memset(tmpdata, 0, lio);
 692                                                 if (rdpos == NOFSIZE) lseek(mkfd, lio, SEEK_CUR);
 693                                                 else lseek(mkfd, rdpos + lio, SEEK_SET);
 694                                                 break;
 695                                         default: xerror(NO, NO, NO, "%s", mackeyf); break;
 696                                 }
 697                         }
 698                         if (lio && lio < lrem) {
 699                                 pblk += lio;
 700                                 lrem -= lio;
 701                                 goto _mkragain;
 702                         }
 703
 704                         skein_update(&sk, tmpdata, ldone);
 705                 }
 706
 707                 skein_final(mackey, &sk);
 708
 709                 xclose(mkfd);
 710         }
 711         else if (mackey_opt == TFC_MACKEY_PASSWORD) {
 712                 memset(&getps, 0, sizeof(struct getpasswd_state));
 713                 getps.fd = getps.efd = -1;
 714                 getps.passwd = pwdask;
 715                 getps.pwlen = sizeof(pwdask)-1;
 716                 getps.echo = mac_pw_prompt ? mac_pw_prompt : "Enter MAC password: ";
 717                 getps.charfilter = (show_secrets == YES) ? getps_plain_filter : getps_filter;
 718                 getps.maskchar = (show_secrets == YES) ? 0 : 'x';
 719                 getps.flags = GETP_WAITFILL;
 720                 n = xgetpasswd(&getps);
 721                 if (n == NOSIZE) xerror(NO, NO, YES, "getting MAC password");
 722                 if (n == ((size_t)-2)) xexit(1);
 723                 if (verbose) say_hint(pwdask, n, "MAC password hint");
 724                 skein(mackey, TF_MAX_BITS, NULL, pwdask, n);
 725         }
 726
 727
 728         if ((strlen(progname) <= 9)
 729         && ((!strcmp(progname, "sksum"))
 730         || ((!memcmp(progname, "sk", 2))
 731         && (!memcmp(progname+3, "sum", 3)
 732         || !memcmp(progname+4, "sum", 3)
 733         || !memcmp(progname+5, "sum", 3)
 734         || !memcmp(progname+6, "sum", 3)))))
 735                 do_sksum(progname, argv+optind);
 736         if (!strcmp(progname, "tfbase64")) do_edbase64(argv+optind);
 737
 738         idx = optind;
 739
 740         if (argv[idx]) {
 741                 if (password || rawkey > TFC_RAWKEY_KEYFILE) goto _nokeyfd;
 742                 if (!strcmp(argv[idx], "-")) kfd = 0;
 743                 else kfd = open(argv[idx], O_RDONLY | O_LARGEFILE);
 744                 if (kfd == -1) xerror(NO, NO, YES, "%s", argv[idx]);
 745
 746                 lio = strnlen(argv[idx], PATH_MAX);
 747                 memset(argv[idx], '*', lio);
 748
 749                 idx++;
 750         }
 751         else password = YES;
 752
 753         errno = 0;
 754         if (do_full_key == NO && tweakf) {
 755                 int twfd;
 756
 757                 if (!strcmp(tweakf, "-")) twfd = 0;
 758                 else twfd = open(tweakf, O_RDONLY | O_LARGEFILE);
 759                 if (twfd == -1) xerror(NO, NO, YES, "%s", tweakf);
 760                 lio = ldone = xread(twfd, tweak, TF_TWEAK_SIZE);
 761                 if (lio == NOSIZE) xerror(NO, NO, YES, "%s", tweakf);
 762                 if (ldone < TF_TWEAK_SIZE)
 763                         xerror(NO, NO, YES, "%s: %zu bytes tweak required", tweakf, TF_TWEAK_SIZE);
 764                 xclose(twfd);
 765         }
 766
 767 _nokeyfd:
 768         errno = 0;
 769         if (argv[idx]) {
 770                 if (!strcmp(argv[idx], "-") && kfd) sfd = 0;
 771                 else {
 772                         sfd = open(argv[idx], O_RDONLY | O_LARGEFILE);
 773                         if (do_preserve_time) if (fstat(sfd, &s_stat) == -1)
 774                                 xerror(YES, NO, YES, "stat(%s)", argv[idx]);
 775                 }
 776                 if (sfd == -1) xerror(NO, NO, YES, "%s", argv[idx]);
 777
 778                 if ((do_mac >= TFC_MAC_VRFY || do_mac <= TFC_MAC_DROP) && !do_mac_file) {
 779                         maxlen = tfc_fdsize(sfd);
 780                         if (maxlen == NOFSIZE)
 781                                 xerror(NO, YES, YES,
 782                                 "Cannot verify embedded MAC with non-seekable source!");
 783                         maxlen -= TF_FROM_BITS(macbits);
 784                 }
 785                 srcfname = argv[idx];
 786                 idx++;
 787         }
 788
 789         if (!do_mac_file && (do_mac >= TFC_MAC_VRFY && sfd == 0))
 790                 xerror(NO, YES, YES, "Cannot verify embedded MAC with non-seekable source!");
 791
 792         if (ctrsz == NOSIZE) ctrsz = TF_BLOCK_SIZE;
 793         if (ctrsz > TF_BLOCK_SIZE) ctrsz = TF_BLOCK_SIZE;
 794
 795         if (ctr_mode == TFC_MODE_ECB) goto _ctrskip1;
 796         errno = 0;
 797         if (counter_file) {
 798                 int ctrfd;
 799
 800                 if (!strcmp(counter_file, "-")) ctrfd = 0;
 801                 else ctrfd = open(counter_file, O_RDONLY | O_LARGEFILE);
 802                 if (ctrfd == -1) xerror(NO, NO, YES, "%s", counter_file);
 803                 lio = xread(ctrfd, ctr, ctrsz);
 804                 if (lio == NOSIZE) xerror(NO, NO, YES, "%s", counter_file);
 805                 if (lio < ctrsz) xerror(NO, YES, YES, "counter file is too small (%zu)!", lio);
 806                 xclose(ctrfd);
 807         }
 808         else if (counter_opt == TFC_CTR_HEAD) {
 809                 pblk = ctr;
 810                 ldone = 0;
 811                 lrem = lblock = ctrsz;
 812                 if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(sfd);
 813 _ctrragain:     lio = xread(sfd, pblk, lrem);
 814                 if (lio != NOSIZE) ldone += lio;
 815                 else {
 816                         if (errno != EIO && catch_all_errors != YES)
 817                                 xerror(NO, NO, NO, "%s", srcfname);
 818                         switch (error_action) {
 819                                 case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", srcfname); goto _ctrragain; break;
 820                                 case TFC_ERRACT_SYNC:
 821                                 case TFC_ERRACT_LSYNC:
 822                                         xerror(YES, NO, NO, "%s", srcfname);
 823                                         lio = ldone = lrem = lblock;
 824                                         memset(ctr, 0, lio);
 825                                         if (rdpos == NOFSIZE) lseek(sfd, lio, SEEK_CUR);
 826                                         else lseek(sfd, rdpos + lio, SEEK_SET);
 827                                         break;
 828                                 default: xerror(NO, NO, NO, "%s", srcfname); break;
 829                         }
 830                 }
 831                 if (lio && lio < lrem) {
 832                         pblk += lio;
 833                         lrem -= lio;
 834                         goto _ctrragain;
 835                 }
 836                 total_processed_src += ldone;
 837         }
 838
 839 _ctrskip1:
 840         if (iseek) {
 841                 if (counter_opt == TFC_CTR_HEAD && ctr_mode != TFC_MODE_ECB)
 842                         iseek += ctrsz;
 843                 if (lseek(sfd, iseek, SEEK_SET) == -1)
 844                         xerror(ignore_seek_errors, NO, NO, "%s: seek failed", srcfname);
 845         }
 846
 847         if (ctr_mode == TFC_MODE_PLAIN) goto _plain;
 848
 849         if (verbose) tfc_esay("%s: hashing password", tfc_format_pid(progname));
 850
 851         if (rawkey == TFC_RAWKEY_KEYFILE) {
 852                 tfc_yesno xtskeyset = NO;
 853
 854                 pblk = key;
 855 _xts2key:       ldone = 0;
 856                 lrem = lblock = TF_FROM_BITS(TFC_KEY_BITS);
 857                 if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(kfd);
 858 _keyragain:     lio = xread(kfd, pblk, lrem);
 859                 if (lio != NOSIZE) ldone += lio;
 860                 else {
 861                         if (errno != EIO && catch_all_errors != YES)
 862                                 xerror(NO, NO, NO, "reading key");
 863                         switch (error_action) {
 864                                 case TFC_ERRACT_CONT: xerror(YES, NO, NO, "reading key"); goto _keyragain; break;
 865                                 case TFC_ERRACT_SYNC:
 866                                 case TFC_ERRACT_LSYNC:
 867                                         xerror(YES, NO, NO, "reading key");
 868                                         lio = ldone = lrem = lblock;
 869                                         memset(key, 0, lio);
 870                                         if (rdpos == NOFSIZE) lseek(kfd, lio, SEEK_CUR);
 871                                         else lseek(kfd, rdpos + lio, SEEK_SET);
 872                                         break;
 873                                 default: xerror(NO, NO, NO, "reading key"); break;
 874                         }
 875                 }
 876                 if (lio && lio < lrem) {
 877                         pblk += lio;
 878                         lrem -= lio;
 879                         goto _keyragain;
 880                 }
 881                 if (ldone < lblock) xerror(NO, YES, YES, "rawkey too small! (%zu)", ldone);
 882
 883                 if (ctr_mode == TFC_MODE_XTS) {
 884                         if (xtskeyset == NO) {
 885                                 pblk = xtskey;
 886                                 xtskeyset = YES;
 887                                 goto _xts2key;
 888                         }
 889                 }
 890         }
 891         else if (rawkey == TFC_RAWKEY_ASKSTR) {
 892                 tfc_yesno xtskeyset = NO;
 893
 894                 pblk = key; n = sizeof(key);
 895 _xts2keyaskstr: memset(&getps, 0, sizeof(struct getpasswd_state));
 896                 getps.fd = getps.efd = -1;
 897                 getps.passwd = (char *)pblk;
 898                 getps.pwlen = n;
 899                 getps.echo = pw_prompt ? pw_prompt : "Enter rawkey (str): ";
 900                 getps.charfilter = (show_secrets == YES) ? getps_plain_filter : getps_filter;
 901                 getps.maskchar = (show_secrets == YES) ? 0 : 'x';
 902                 getps.flags = GETP_WAITFILL;
 903                 n = xgetpasswd(&getps);
 904                 if (n == NOSIZE) xerror(NO, NO, YES, "getting string rawkey");
 905                 if (n == ((size_t)-2)) xexit(1);
 906                 if (verbose) say_hint(pblk, n, "Raw string key hint");
 907                 if (ctr_mode == TFC_MODE_XTS) {
 908                         if (xtskeyset == NO) {
 909                                 pblk = xtskey; n = sizeof(xtskey);
 910                                 xtskeyset = YES;
 911                                 goto _xts2keyaskstr;
 912                         }
 913                 }
 914         }
 915         else if (rawkey == TFC_RAWKEY_ASKHEX) {
 916                 tfc_yesno xtskeyset = NO;
 917
 918                 pblk = key;
 919 _rawkey_hex_again:
 920                 memset(&getps, 0, sizeof(struct getpasswd_state));
 921                 getps.fd = getps.efd = -1;
 922                 getps.passwd = pwdask;
 923                 getps.pwlen = (TF_FROM_BITS(TFC_KEY_BITS)*2);
 924                 getps.echo = pw_prompt ? pw_prompt : "Enter rawkey (hex): ";
 925                 getps.charfilter = (show_secrets == YES) ? getps_plain_hex_filter : getps_hex_filter;
 926                 getps.maskchar = (show_secrets == YES) ? 0 : 'x';
 927                 getps.flags = GETP_WAITFILL;
 928                 n = xgetpasswd(&getps);
 929                 if (n == NOSIZE) xerror(NO, NO, YES, "getting hex rawkey");
 930                 if (n == ((size_t)-2)) xexit(1);
 931                 if (n % 2) {
 932                         tfc_esay("Please input even number of hex digits!");
 933                         goto _rawkey_hex_again;
 934                 }
 935                 hex2bin(pblk, pwdask);
 936                 memset(pwdask, 0, sizeof(pwdask));
 937                 if (verbose) say_hint(pblk, n/2, "Raw hex key hint");
 938                 if (ctr_mode == TFC_MODE_XTS) {
 939                         if (xtskeyset == NO) {
 940                                 pblk = xtskey;
 941                                 xtskeyset = YES;
 942                                 goto _rawkey_hex_again;
 943                         }
 944                 }
 945         }
 946         else if (password) {
 947 _pwdagain:      memset(&getps, 0, sizeof(struct getpasswd_state));
 948                 getps.fd = getps.efd = -1;
 949                 getps.passwd = pwdask;
 950                 getps.pwlen = sizeof(pwdask)-1;
 951                 getps.echo = pw_prompt ? pw_prompt : "Enter password: ";
 952                 getps.charfilter = (show_secrets == YES) ? getps_plain_filter : getps_filter;
 953                 getps.maskchar = (show_secrets == YES) ? 0 : 'x';
 954                 getps.flags = GETP_WAITFILL;
 955                 n = xgetpasswd(&getps);
 956                 if (n == NOSIZE) xerror(NO, NO, YES, "getting password");
 957                 if (n == ((size_t)-2)) xexit(1);
 958                 if (do_edcrypt == TFC_DO_ENCRYPT && no_repeat == NO) {
 959                         getps.fd = getps.efd = -1;
 960                         getps.passwd = pwdagain;
 961                         getps.pwlen = sizeof(pwdagain)-1;
 962                         getps.echo = "Enter it again: ";
 963                         getps.flags = GETP_WAITFILL;
 964                         n = xgetpasswd(&getps);
 965                         if (n == NOSIZE) xerror(NO, NO, YES, "getting password again");
 966                         if (n == ((size_t)-2)) xexit(1);
 967                         if (strncmp(pwdask, pwdagain, sizeof(pwdagain)-1) != 0) {
 968                                 tfc_esay("Passwords are different, try again");
 969                                 goto _pwdagain;
 970                         }
 971                 }
 972                 if (verbose) say_hint(pwdask, n, "Password hint");
 973                 skein(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, pwdask, n);
 974                 memset(pwdask, 0, sizeof(pwdask));
 975                 memset(pwdagain, 0, sizeof(pwdagain));
 976         }
 977         else {
 978                 if (skeinfd(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, kfd, keyoffset, maxkeylen) != YES)
 979                         xerror(NO, NO, YES, "hashing key");
 980         }
 981
 982         if (rawkey == NO) {
 983                 if (tfc_saltsz > 0) {
 984                         memcpy(tfc_salt+tfc_saltsz, key, TF_FROM_BITS(TFC_KEY_BITS));
 985                         skein(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, tfc_salt, tfc_saltsz+TF_FROM_BITS(TFC_KEY_BITS));
 986                 }
 987                 if (nr_turns > 1) for (x = 0; x < nr_turns; x++)
 988                         skein(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
 989                 memset(tfc_salt, 0, TFC_MAX_SALT);
 990         }
 991
 992         if (ctr_mode == TFC_MODE_XTS && rawkey == NO) {
 993                 skein(xtskey, TF_NR_KEY_BITS, mackey_opt ? mackey : NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
 994         }
 995
 996         if (genkeyf) {
 997                 int krfd;
 998                 tfc_yesno xtskeyset = NO;
 999
1000                 pblk = key;
1001                 if (!strcmp(genkeyf, "-")) krfd = 1;
1002                 else krfd = open(genkeyf, O_WRONLY | O_CREAT | O_LARGEFILE | write_flags, 0666);
1003                 if (krfd == -1) xerror(NO, NO, YES, "%s", genkeyf);
1004 _xts2genkey:    if (xwrite(krfd, pblk, TF_FROM_BITS(TFC_KEY_BITS)) == NOSIZE) xerror(NO, NO, YES, "%s", genkeyf);
1005                 if (do_fsync && fsync(krfd) == -1) xerror(NO, NO, YES, "%s", genkeyf);
1006                 if (verbose && xtskeyset == NO) {
1007                         tfc_esay("%s: password hashing done", tfc_format_pid(progname));
1008                         tfc_esay("%s: rawkey written to %s.", tfc_format_pid(progname), genkeyf);
1009                         tfc_esay("%s: Have a nice day!", tfc_format_pid(progname));
1010                 }
1011
1012                 if (ctr_mode == TFC_MODE_XTS) {
1013                         if (xtskeyset == NO) {
1014                                 pblk = xtskey;
1015                                 xtskeyset = YES;
1016                                 goto _xts2genkey;
1017                         }
1018                 }
1019
1020                 fchmod(krfd, 0600);
1021                 xclose(krfd);
1022                 xexit(0);
1023         }
1024
1025         if (do_mac != NO) {
1026                 if (mackey_opt == TFC_MACKEY_RAWKEY) skein(mackey, TF_MAX_BITS, key, key, TF_FROM_BITS(TFC_KEY_BITS));
1027                 if (ctr_mode < TFC_MODE_OCB) {
1028                         if (verbose) tfc_esay("%s: doing MAC calculation, processing speed "
1029                                 "will be slower.", tfc_format_pid(progname));
1030                         if (mackey_opt) skein_init_key(&sk, mackey, macbits);
1031                         else skein_init(&sk, macbits);
1032                 }
1033         }
1034
1035         if (!counter_file && counter_opt <= TFC_CTR_SHOW && ctr_mode != TFC_MODE_ECB) {
1036                 skein(ctr, TF_TO_BITS(ctrsz), mackey_opt ? mackey : NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
1037         }
1038
1039         tf_convkey(key);
1040         if (ctr_mode == TFC_MODE_XTS) tf_convkey(xtskey);
1041         if (do_full_key == NO) {
1042                 if (!tweakf) skein(tweak, TF_NR_TWEAK_BITS, NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
1043                 tf_tweak_set(key, tweak);
1044         }
1045         if (ctr_mode == TFC_MODE_ECB) goto _ctrskip2;
1046
1047         if (counter_opt == TFC_CTR_ZERO) memset(ctr, 0, ctrsz);
1048
1049         tfc_data_to_words64(&iseek_blocks, sizeof(iseek_blocks));
1050         tf_ctr_set(ctr, &iseek_blocks, sizeof(iseek_blocks));
1051         if (do_mac == TFC_MAC_JUST_VRFY2) memcpy(svctr, ctr, TF_BLOCK_SIZE);
1052
1053         if (counter_opt == TFC_CTR_SHOW) {
1054                 switch (do_outfmt) {
1055                         case TFC_OUTFMT_B64: tfc_printbase64(stderr, ctr, ctrsz, YES); break;
1056                         case TFC_OUTFMT_RAW: xwrite(2, ctr, ctrsz); break;
1057                         case TFC_OUTFMT_HEX: mehexdump(ctr, ctrsz, ctrsz, YES); break;
1058                 }
1059         }
1060         else if (counter_opt == TFC_CTR_RAND) tfc_getrandom(ctr, ctrsz);
1061
1062 _ctrskip2:
1063         if (kfd != -1) {
1064                 xclose(kfd);
1065                 kfd = -1;
1066         }
1067         if (verbose) tfc_esay("%s: password hashing done", tfc_format_pid(progname));
1068
1069         if (overwrite_source && srcfname) argv[idx] = srcfname;
1070
1071 _plain:
1072         if (argv[idx]) {
1073                 if (!strcmp(argv[idx], "-")) dfd = 1;
1074                 else dfd = open(argv[idx], O_RDWR | O_LARGEFILE | write_flags, 0666);
1075                 if (dfd == -1) {
1076                         dfd = open(argv[idx], O_WRONLY | O_CREAT | O_LARGEFILE | write_flags, 0666);
1077                         if (dfd == -1) xerror(NO, NO, YES, "%s", argv[idx]);
1078                 }
1079                 dstfname = argv[idx];
1080                 idx++;
1081         }
1082
1083         if (oseek) {
1084                 if (lseek(dfd, oseek, SEEK_SET) == -1)
1085                         xerror(ignore_seek_errors, NO, NO, "%s: seek failed", dstfname);
1086         }
1087
1088         for (x = 1; x < NSIG; x++) signal(x, SIG_IGN);
1089         memset(&sigact, 0, sizeof(sigact));
1090         sigact.sa_flags = SA_RESTART;
1091         sigact.sa_handler = print_crypt_status;
1092         sigaction(SIGUSR1, &sigact, NULL);
1093         sigaction(SIGALRM, &sigact, NULL);
1094         if (status_timer) setup_next_alarm(status_timer > 1000000 ? 1000000 : status_timer);
1095         sigact.sa_handler = change_status_width;
1096         sigaction(SIGQUIT, &sigact, NULL);
1097         sigact.sa_handler = change_status_timer;
1098         sigaction(SIGUSR2, &sigact, NULL);
1099         if (quiet == NO) {
1100                 sigact.sa_handler = print_crypt_status;
1101                 sigaction(SIGINT, &sigact, NULL);
1102                 sigaction(SIGTERM, &sigact, NULL);
1103                 sigaction(SIGTSTP, &sigact, NULL);
1104         }
1105         else {
1106                 sigact.sa_handler = exit_sigterm;
1107                 sigaction(SIGINT, &sigact, NULL);
1108                 sigaction(SIGTERM, &sigact, NULL);
1109                 sigact.sa_handler = handle_sigtstp;
1110                 sigaction(SIGTSTP, &sigact, NULL);
1111         }
1112         memset(&sigact, 0, sizeof(struct sigaction));
1113
1114         tfc_getcurtime(&delta_time);
1115
1116         errno = 0;
1117         if (counter_opt == TFC_CTR_RAND && ctr_mode != TFC_MODE_ECB) {
1118                 pblk = ctr;
1119                 lio = lrem = ctrsz;
1120                 ldone = 0;
1121 _ctrwagain:     lio = xwrite(dfd, pblk, lrem);
1122                 if (lio != NOSIZE) ldone += lio;
1123                 else xerror(NO, NO, NO, "%s", dstfname);
1124                 if (do_fsync && fsync(dfd) == -1) xerror(NO, NO, NO, "%s", dstfname);
1125                 if (lio < lrem) {
1126                         pblk += lio;
1127                         lrem -= lio;
1128                         goto _ctrwagain;
1129                 }
1130                 total_written_dst += ldone;
1131                 total_processed_dst += ldone;
1132                 delta_processed += ldone;
1133         }
1134
1135         if (ctr_mode == TFC_MODE_STREAM) tfe_init_iv(&tfe, key, ctr);
1136
1137         if (do_mac == TFC_MAC_JUST_VRFY2) {
1138                 rwd = tfc_fdgetpos(sfd);
1139                 if (rwd == NOFSIZE) {
1140                         tfc_esay("%s: WARNING: input is not seekable, disabling MAC testing mode", tfc_format_pid(progname));
1141                         do_mac = TFC_MAC_VRFY;
1142                 }
1143                 goto _nodecrypt_again_vrfy2;
1144
1145 _decrypt_again_vrfy2:
1146                 if (lseek(sfd, (off_t)rwd, SEEK_SET) == ((off_t)-1)) {
1147                         xerror(ignore_seek_errors, NO, YES, "MAC testing seek failed");
1148                 }
1149                 total_processed_src = rwd;
1150                 memcpy(ctr, svctr, TF_BLOCK_SIZE);
1151                 memset(svctr, 0, TF_BLOCK_SIZE);
1152         }
1153
1154 _nodecrypt_again_vrfy2:
1155         loopcnt = 1;
1156         errno = 0;
1157         do_stop = NO;
1158         while (1) {
1159                 if (do_stop) break;
1160                 pblk = srcblk;
1161                 ldone = 0;
1162                 lrem = lblock = blk_len_adj(maxlen, total_processed_src, blksize);
1163                 if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(sfd);
1164 _ragain:        lio = xread(sfd, pblk, lrem);
1165                 if (lio == 0) {
1166                         if ((do_read_loops != 0 && sfd != 0) && (loopcnt < do_read_loops)) {
1167                                 lseek(sfd, 0L, SEEK_SET);
1168                                 loopcnt++;
1169                                 goto _ragain;
1170                         }
1171
1172                         do_stop = YES;
1173                 }
1174                 if (lio != NOSIZE) ldone += lio;
1175                 else {
1176                         if (errno != EIO && catch_all_errors != YES)
1177                                 xerror(NO, NO, NO, "%s", srcfname);
1178                         switch (error_action) {
1179                                 case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", srcfname); goto _ragain; break;
1180                                 case TFC_ERRACT_SYNC:
1181                                 case TFC_ERRACT_LSYNC:
1182                                         xerror(YES, NO, NO, "%s", srcfname);
1183                                         lio = ldone = lrem = lblock;
1184                                         memset(srcblk, 0, lio);
1185                                         if (rdpos == NOFSIZE) lseek(sfd, lio, SEEK_CUR);
1186                                         else lseek(sfd, rdpos + lio, SEEK_SET);
1187                                         break;
1188                                 default: xerror(NO, NO, NO, "%s", srcfname); break;
1189                         }
1190                 }
1191                 if (lio && lio < lrem) {
1192                         pblk += lio;
1193                         lrem -= lio;
1194                         goto _ragain;
1195                 }
1196                 total_processed_src += ldone;
1197
1198                 if (do_pad && (ldone % TF_BLOCK_SIZE)) {
1199                         size_t orig = ldone;
1200                         ldone += (TF_BLOCK_SIZE - (ldone % TF_BLOCK_SIZE));
1201                         if (ldone > blksize) ldone = blksize;
1202                         memset(srcblk+orig, 0, sizeof(srcblk)-orig);
1203                 }
1204
1205                 if (do_mac == TFC_MAC_SIGN && ctr_mode < TFC_MODE_OCB)
1206                         skein_update(&sk, srcblk, ldone);
1207
1208                 if (ctr_mode == TFC_MODE_CTR) tf_ctr_crypt(key, ctr, dstblk, srcblk, ldone);
1209                 else if (ctr_mode == TFC_MODE_STREAM) tf_stream_crypt(&tfe, dstblk, srcblk, ldone);
1210                 else if (ctr_mode == TFC_MODE_XTS && do_edcrypt == TFC_DO_ENCRYPT)
1211                         tf_xts_encrypt(key, xtskey, ctr, dstblk, srcblk, ldone, xtsblocks);
1212                 else if (ctr_mode == TFC_MODE_XTS && do_edcrypt == TFC_DO_DECRYPT)
1213                         tf_xts_decrypt(key, xtskey, ctr, dstblk, srcblk, ldone, xtsblocks);
1214                 else if (ctr_mode == TFC_MODE_ECB && do_edcrypt == TFC_DO_ENCRYPT)
1215                         tf_ecb_encrypt(key, dstblk, srcblk, ldone);
1216                 else if (ctr_mode == TFC_MODE_ECB && do_edcrypt == TFC_DO_DECRYPT)
1217                         tf_ecb_decrypt(key, dstblk, srcblk, ldone);
1218                 else if (ctr_mode == TFC_MODE_CBC && do_edcrypt == TFC_DO_ENCRYPT)
1219                         tf_cbc_encrypt(key, ctr, dstblk, srcblk, ldone);
1220                 else if (ctr_mode == TFC_MODE_CBC && do_edcrypt == TFC_DO_DECRYPT)
1221                         tf_cbc_decrypt(key, ctr, dstblk, srcblk, ldone);
1222
1223                 else if (ctr_mode == TFC_MODE_OCB && do_edcrypt == TFC_DO_ENCRYPT)
1224                         tf_ocb_encrypt(key, ctr, dstblk, do_mac == TFC_MAC_SIGN ? macresult : NULL, srcblk, ldone, xtsblocks);
1225                 else if (ctr_mode == TFC_MODE_OCB && do_edcrypt == TFC_DO_DECRYPT)
1226                         tf_ocb_decrypt(key, ctr, dstblk, do_mac >= TFC_MAC_VRFY ? macresult : NULL, srcblk, ldone, xtsblocks);
1227
1228                 else if (ctr_mode == TFC_MODE_PLAIN)
1229                         memcpy(dstblk, srcblk, ldone);
1230
1231                 if (do_mac >= TFC_MAC_VRFY && ctr_mode < TFC_MODE_OCB)
1232                         skein_update(&sk, dstblk, ldone);
1233                 if (do_mac >= TFC_MAC_JUST_VRFY) goto _nowrite;
1234
1235                 pblk = dstblk;
1236                 lrem = ldone;
1237                 ldone = 0;
1238 _wagain:        lio = xwrite(dfd, pblk, lrem);
1239                 if (lio != NOSIZE) ldone += lio;
1240                 else xerror(NO, NO, NO, "%s", dstfname);
1241                 if (do_fsync && fsync(dfd) == -1) xerror(NO, NO, NO, "%s", dstfname);
1242                 if (lio < lrem) {
1243                         pblk += lio;
1244                         lrem -= lio;
1245                         goto _wagain;
1246                 }
1247                 total_written_dst += ldone;
1248 _nowrite:       total_processed_dst += ldone;
1249                 delta_processed += ldone;
1250
1251                 if (maxlen != NOFSIZE && total_processed_src >= maxlen) {
1252                         do_stop = YES;
1253                         break;
1254                 }
1255         }
1256
1257         if (verbose && status_timer && do_statline_dynamic == YES && statline_was_shown == YES) tfc_esay("\n");
1258
1259         errno = 0;
1260         if (do_mac >= TFC_MAC_VRFY) {
1261                 if (!do_mac_file) {
1262                         pblk = macvrfy;
1263                         ldone = 0;
1264                         lrem = lblock = TF_FROM_BITS(macbits);
1265                         if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(sfd);
1266 _macragain:             lio = xread(sfd, pblk, lrem);
1267                         if (lio != NOSIZE) ldone += lio;
1268                         else {
1269                                 if (errno != EIO && catch_all_errors != YES)
1270                                         xerror(NO, NO, NO, "%s", srcfname);
1271                                 switch (error_action) {
1272                                         case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", srcfname); goto _macragain; break;
1273                                         case TFC_ERRACT_SYNC:
1274                                         case TFC_ERRACT_LSYNC:
1275                                                 xerror(YES, NO, NO, "%s", srcfname);
1276                                                 lio = ldone = lrem = lblock;
1277                                                 memset(macvrfy, 0, lio);
1278                                                 if (rdpos == NOFSIZE) lseek(sfd, lio, SEEK_CUR);
1279                                                 else lseek(sfd, rdpos + lio, SEEK_SET);
1280                                                 break;
1281                                         default: xerror(NO, NO, NO, "%s", srcfname); break;
1282                                 }
1283                         }
1284                         if (lio && lio < lrem) {
1285                                 pblk += lio;
1286                                 lrem -= lio;
1287                                 goto _macragain;
1288                         }
1289                         total_processed_src += ldone;
1290                 }
1291                 else {
1292                         int mfd;
1293
1294                         if (!strcmp(do_mac_file, "-")) mfd = 0;
1295                         else mfd = open(do_mac_file, O_RDONLY | O_LARGEFILE);
1296                         if (mfd == -1) xerror(YES, NO, NO, "%s", do_mac_file);
1297                         lio = ldone = xread(mfd, tmpdata, sizeof(tmpdata));
1298                         if (lio == NOSIZE) xerror(NO, NO, YES, "%s", do_mac_file);
1299                         if (!memcmp(tmpdata, TFC_ASCII_TFC_MAC_FOURCC, TFC_ASCII_TFC_MAC_FOURCC_LEN)) {
1300                                 memmove(tmpdata, tmpdata+TFC_ASCII_TFC_MAC_FOURCC_LEN,
1301                                         sizeof(tmpdata)-TFC_ASCII_TFC_MAC_FOURCC_LEN);
1302                                 lio = TF_FROM_BITS(macbits);
1303                                 base64_decode((char *)macvrfy, lio, (char *)tmpdata, sizeof(tmpdata));
1304                         }
1305                         else memcpy(macvrfy, tmpdata, TF_FROM_BITS(macbits));
1306                         xclose(mfd);
1307                 }
1308
1309                 if (ldone < TF_FROM_BITS(macbits)) {
1310                         if (quiet == NO) tfc_esay("%s: short signature (%zu), "
1311                                 "not verifying", tfc_format_pid(progname), ldone);
1312                         exitcode = 1;
1313                         goto _shortmac;
1314                 }
1315
1316                 if (ctr_mode < TFC_MODE_OCB) skein_final(macresult, &sk);
1317                 else skein(macresult, macbits, mackey, macresult, TF_FROM_BITS(macbits));
1318
1319                 if (ctr_mode == TFC_MODE_CTR) tf_ctr_crypt(key, ctr, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1320                 else if (ctr_mode == TFC_MODE_STREAM) tf_stream_crypt(&tfe, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1321                 else if (ctr_mode == TFC_MODE_XTS) tf_xts_decrypt(key, xtskey, ctr, tmpdata, macvrfy, TF_FROM_BITS(macbits), xtsblocks);
1322                 else if (ctr_mode == TFC_MODE_ECB) tf_ecb_decrypt(key, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1323                 else if (ctr_mode == TFC_MODE_CBC) tf_cbc_decrypt(key, ctr, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1324                 else if (ctr_mode == TFC_MODE_OCB) tf_ocb_decrypt(key, ctr, tmpdata, NULL, macvrfy, TF_FROM_BITS(macbits), xtsblocks);
1325
1326                 if (!memcmp(tmpdata, macresult, TF_FROM_BITS(macbits))) {
1327                         if (quiet == NO) {
1328                                 tfc_esay("%s: signature is good", tfc_format_pid(progname));
1329                                 if (verbose) {
1330                                         if (do_outfmt == TFC_OUTFMT_B64) tfc_printbase64(stderr, macresult, TF_FROM_BITS(macbits), YES);
1331                                         else mehexdump(macresult, TF_FROM_BITS(macbits), TF_FROM_BITS(macbits), YES);
1332                                 }
1333                         }
1334                         if (do_mac == TFC_MAC_JUST_VRFY2) {
1335                                 if (verbose) tfc_esay("%s: -u: MAC signature is valid, proceeding with decrypting it again", tfc_format_pid(progname));
1336                                 maxlen = total_processed_src - SKEIN_DIGEST_SIZE;
1337                                 do_mac = TFC_MAC_DROP2;
1338                                 goto _decrypt_again_vrfy2;
1339                         }
1340                 }
1341                 else {
1342                         if (quiet == NO) {
1343                                 tfc_esay("%s: signature is BAD: "
1344                                 "wrong password, key, mode, or file is not signed", tfc_format_pid(progname));
1345                                 if (do_mac == TFC_MAC_JUST_VRFY2) tfc_esay("%s: -u: MAC signature is invalid, not decrypting it again", tfc_format_pid(progname));
1346                         }
1347                         exitcode = 1;
1348                 }
1349
1350 _shortmac:      memset(macvrfy, 0, sizeof(macvrfy));
1351                 memset(macresult, 0, sizeof(macresult));
1352                 memset(tmpdata, 0, sizeof(tmpdata));
1353         }
1354         else if (do_mac == TFC_MAC_SIGN) {
1355                 if (ctr_mode < TFC_MODE_OCB) skein_final(macresult, &sk);
1356                 else skein(macresult, macbits, mackey, macresult, TF_FROM_BITS(macbits));
1357
1358                 if (ctr_mode == TFC_MODE_CTR) tf_ctr_crypt(key, ctr, tmpdata, macresult, TF_FROM_BITS(macbits));
1359                 else if (ctr_mode == TFC_MODE_STREAM) tf_stream_crypt(&tfe, tmpdata, macresult, TF_FROM_BITS(macbits));
1360                 else if (ctr_mode == TFC_MODE_XTS) tf_xts_encrypt(key, xtskey, ctr, tmpdata, macresult, TF_FROM_BITS(macbits), xtsblocks);
1361                 else if (ctr_mode == TFC_MODE_ECB) tf_ecb_encrypt(key, tmpdata, macresult, TF_FROM_BITS(macbits));
1362                 else if (ctr_mode == TFC_MODE_CBC) tf_cbc_encrypt(key, ctr, tmpdata, macresult, TF_FROM_BITS(macbits));
1363                 else if (ctr_mode == TFC_MODE_OCB) tf_ocb_encrypt(key, ctr, tmpdata, NULL, macresult, TF_FROM_BITS(macbits), xtsblocks);
1364                 memset(macresult, 0, sizeof(macresult));
1365
1366                 if (!do_mac_file) {
1367                         pblk = tmpdata;
1368                         lio = lrem = TF_FROM_BITS(macbits);
1369                         ldone = 0;
1370 _macwagain:             lio = xwrite(dfd, pblk, lrem);
1371                         if (lio != NOSIZE) ldone += lio;
1372                         else xerror(NO, NO, NO, "%s", dstfname);
1373                         if (do_fsync && fsync(dfd) == -1) xerror(NO, NO, NO, "%s", dstfname);
1374                         if (lio < lrem) {
1375                                 pblk += lio;
1376                                 lrem -= lio;
1377                                 goto _macwagain;
1378                         }
1379                         total_written_dst += ldone;
1380                         total_processed_dst += ldone;
1381                         delta_processed += ldone;
1382                 }
1383                 else {
1384                         int mfd;
1385
1386                         if (!strcmp(do_mac_file, "-")) mfd = 1;
1387                         else mfd = open(do_mac_file, O_WRONLY | O_CREAT | O_LARGEFILE | write_flags, 0666);
1388                         if (mfd == -1) xerror(YES, NO, NO, "%s", do_mac_file);
1389                         if (do_outfmt == TFC_OUTFMT_B64) {
1390                                 memcpy(macvrfy, tmpdata, TF_FROM_BITS(macbits));
1391                                 memset(tmpdata, 0, TFC_TMPSIZE);
1392                                 memcpy(tmpdata, TFC_ASCII_TFC_MAC_FOURCC, TFC_ASCII_TFC_MAC_FOURCC_LEN);
1393                                 base64_encode((char *)tmpdata+TFC_ASCII_TFC_MAC_FOURCC_LEN, (char *)macvrfy, TF_FROM_BITS(macbits));
1394                                 lrem = strnlen((char *)tmpdata, sizeof(tmpdata));
1395                                 if (lrem) {
1396                                         tmpdata[lrem] = '\n';
1397                                         lrem++;
1398                                 }
1399                                 lio = xwrite(mfd, tmpdata, lrem);
1400                         }
1401                         else lio = xwrite(mfd, tmpdata, TF_FROM_BITS(macbits));
1402                         if (lio == NOSIZE) xerror(NO, NO, YES, "%s", do_mac_file);
1403                         if (do_fsync && fsync(mfd) == -1) xerror(NO, NO, YES, "%s", do_mac_file);
1404                         xclose(mfd);
1405                 }
1406
1407                 memset(macvrfy, 0, sizeof(macvrfy));
1408                 memset(macresult, 0, sizeof(macresult));
1409                 memset(tmpdata, 0, sizeof(tmpdata));
1410         }
1411         else if (do_mac == TFC_MAC_DROP2) total_processed_src += SKEIN_DIGEST_SIZE;
1412
1413         if (verbose || status_timer || (do_stop == YES && quiet == NO)) print_crypt_status(0);
1414
1415         xexit(exitcode);
1416         return -1;
1417 }