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         tfc_yesno ro;
  38
  39         if (!strcmp(logfile, "-")) return;
  40
  41         ro = read_only;
  42         read_only = NO;
  43         fd = xopen(logfile, O_WRONLY | O_CREAT | O_LARGEFILE | O_TRUNC);
  44         read_only = ro;
  45         xclose(2);
  46         if (dup2(fd, 2) == -1) xexit(2);
  47         xclose(fd);
  48         do_statline_dynamic = NO;
  49 }
  50
  51 static int getps_filter(struct getpasswd_state *getps, char chr, size_t pos)
  52 {
  53         if (chr == '\x03') {
  54                 getps->retn = ((size_t)-2);
  55                 return 6;
  56         }
  57         return 1;
  58 }
  59
  60 static int getps_hex_filter(struct getpasswd_state *getps, char chr, size_t pos)
  61 {
  62         if (chr == '\x03') {
  63                 getps->retn = ((size_t)-2);
  64                 return 6;
  65         }
  66         if (chr >= '0' && chr <= '9') return 1;
  67         if (chr >= 'a' && chr <= 'f') return 1;
  68         if (chr >= 'A' && chr <= 'F') return 1;
  69         if (chr == '\x7f' || chr == '\x08'
  70         || chr == '\x15' || chr == '\x17') return 1;
  71         return 0;
  72 }
  73
  74 static inline int isctrlchr(int c)
  75 {
  76         if (c == 9) return 0;
  77         if (c >= 0 && c <= 31) return 1;
  78         if (c == 127) return 1;
  79         return 0;
  80 }
  81
  82 static int getps_plain_filter(struct getpasswd_state *getps, char chr, size_t pos)
  83 {
  84         int x;
  85
  86         x = getps_filter(getps, chr, pos);
  87         if (x != 1) return x;
  88
  89         if (pos < getps->pwlen && !isctrlchr(chr))
  90                 write(getps->efd, &chr, sizeof(char));
  91         return 1;
  92 }
  93
  94 static int getps_plain_hex_filter(struct getpasswd_state *getps, char chr, size_t pos)
  95 {
  96         int x;
  97
  98         x = getps_hex_filter(getps, chr, pos);
  99         if (x != 1) return x;
 100
 101         if (pos < getps->pwlen && !isctrlchr(chr))
 102                 write(getps->efd, &chr, sizeof(char));
 103         return 1;
 104 }
 105
 106 static void make_hint(void *hint, size_t szhint, const void *data, size_t szdata)
 107 {
 108         char t[TF_FROM_BITS(TF_MAX_BITS)];
 109
 110         skein(t, TF_MAX_BITS, NULL, data, szdata);
 111         xor_shrink(hint, szhint, t, sizeof(t));
 112         memset(t, 0, sizeof(t));
 113 }
 114
 115 static void raw_say_hint(void *hint, size_t szhint, const void *data, size_t szdata, const char *prompt)
 116 {
 117         make_hint(hint, szhint, data, szdata);
 118         if (prompt) tfc_nfsay(stderr, "%s: ", prompt);
 119         mehexdump(hint, szhint, szhint, 1);
 120         memset(hint, 0, szhint);
 121 }
 122
 123 static void say_hint(const void *data, size_t szdata, const char *prompt)
 124 {
 125         char t[TF_SIZE_UNIT];
 126         raw_say_hint(t, TF_SIZE_UNIT, data, szdata, prompt);
 127         /* t[] is erased (automatically) */
 128 }
 129
 130 int main(int argc, char **argv)
 131 {
 132         int c;
 133         double td;
 134         char *s, *d, *t, *stoi;
 135         size_t x, n;
 136
 137         progpid = getpid();
 138         progname = basename(argv[0]);
 139
 140         if (!isatty(2)) do_statline_dynamic = NO;
 141
 142         s = (char *)srcblk;
 143         d = getenv("HOME");
 144         if (!d) d = "";
 145         n = PATH_MAX > sizeof(srcblk) ? sizeof(srcblk) : PATH_MAX;
 146         if (xstrlcpy(s, d, n) >= n) goto _baddfname;
 147         if (xstrlcat(s, "/.tfcrypt.defs", n) >= n) goto _baddfname;
 148         read_defaults(s, YES);
 149 _baddfname:
 150         memset(s, 0, n);
 151
 152         if (!strcmp(progname, "iotool")) {
 153                 do_edcrypt = TFC_DO_PLAIN;
 154                 password = YES;
 155                 ctr_mode = TFC_MODE_PLAIN;
 156         }
 157
 158         opterr = 0;
 159         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) {
 160                 switch (c) {
 161                         case 'L':
 162                                 read_defaults(optarg, NO);
 163                                 break;
 164                         case 's':
 165                                 saltf = optarg;
 166                                 break;
 167                         case 'r':
 168                                 randsource = optarg;
 169                                 break;
 170                         case 'c':
 171                                 if (!strcasecmp(optarg, "show"))
 172                                         counter_opt = TFC_CTR_SHOW;
 173                                 else if (!strcasecmp(optarg, "head"))
 174                                         counter_opt = TFC_CTR_HEAD;
 175                                 else if (!strcasecmp(optarg, "rand"))
 176                                         counter_opt = TFC_CTR_RAND;
 177                                 else if (!strcasecmp(optarg, "zero"))
 178                                         counter_opt = TFC_CTR_ZERO;
 179                                 else if (strchr(optarg, ':')) {
 180                                         char *ss, chr;
 181
 182                                         counter_opt = TFC_CTR_SSET;
 183                                         n = sizeof(ctr);
 184
 185                                         s = d = optarg; t = NULL;
 186                                         while ((s = strtok_r(d, ",", &t))) {
 187                                                 if (d) d = NULL;
 188
 189                                                 if (n == 0) break;
 190                                                 ss = strchr(s, ':');
 191                                                 if (!ss) continue;
 192                                                 *ss = 0; ss++;
 193                                                 chr = (char)strtoul(s, &stoi, 16);
 194                                                 if (!str_empty(stoi)) continue;
 195                                                 x = (size_t)strtoul(ss, &stoi, 10);
 196                                                 if (!str_empty(stoi)) continue;
 197                                                 if (x > n) x = n;
 198                                                 memset(ctr+(sizeof(ctr)-n), (int)chr, x);
 199                                                 n -= x;
 200                                         }
 201                                 }
 202                                 else counter_file = sksum_hashlist_file = optarg;
 203                                 break;
 204                         case 'C':
 205                                 if (!strcasecmp(optarg, "ctr"))
 206                                         ctr_mode = TFC_MODE_CTR;
 207                                 else if (!strcasecmp(optarg, "stream"))
 208                                         ctr_mode = TFC_MODE_STREAM;
 209                                 else if (!strcasecmp(optarg, "cbc"))
 210                                         ctr_mode = TFC_MODE_CBC;
 211                                 else if (!strcasecmp(optarg, "ecb"))
 212                                         ctr_mode = TFC_MODE_ECB;
 213                                 else if (!strcasecmp(optarg, "xts"))
 214                                         ctr_mode = TFC_MODE_XTS;
 215                                 else if (!strcasecmp(optarg, "ocb"))
 216                                         ctr_mode = TFC_MODE_OCB;
 217                                 else xerror(NO, YES, YES, "%s: invalid mode of operation", optarg);
 218                                 break;
 219                         case 'P':
 220                                 do_edcrypt = TFC_DO_PLAIN;
 221                                 password = YES;
 222                                 ctr_mode = TFC_MODE_PLAIN;
 223                                 break;
 224                         case 'e':
 225                                 if (do_edcrypt != TFC_DO_PLAIN) do_edcrypt = TFC_DO_ENCRYPT;
 226                                 break;
 227                         case 'd':
 228                                 if (do_edcrypt != TFC_DO_PLAIN) do_edcrypt = TFC_DO_DECRYPT;
 229                                 break;
 230                         case 'D':
 231                                 macbits = strtoul(optarg, &stoi, 10);
 232                                 if (macbits == 0 || !str_empty(stoi) || macbits < 8
 233                                 || macbits > TF_MAX_BITS || macbits % 8)
 234                                         xerror(NO, YES, YES, "%s: invalid MAC bits setting", optarg);
 235                                 break;
 236                         case 'n':
 237                                 nr_turns = sksum_turns = strtoul(optarg, &stoi, 10);
 238                                 if (!str_empty(stoi)) xerror(NO, YES, YES, "%s: invalid number of turns", optarg);
 239                                 break;
 240                         case 'U':
 241                                 if (!strcasecmp(optarg, "key"))
 242                                         mackey_opt = TFC_MACKEY_RAWKEY;
 243                                 else if (!strcasecmp(optarg, "pwd"))
 244                                         mackey_opt = TFC_MACKEY_PASSWORD;
 245                                 else {
 246                                         mackey_opt = TFC_MACKEY_FILE;
 247                                         mackeyf = optarg;
 248                                 }
 249                                 break;
 250                         case 'p':
 251                                 password = YES;
 252                                 break;
 253                         case 'k':
 254                                 rawkey = TFC_RAWKEY_KEYFILE;
 255                                 break;
 256                         case 'z':
 257                                 rawkey = TFC_RAWKEY_ASKSTR;
 258                                 break;
 259                         case 'x':
 260                                 rawkey = TFC_RAWKEY_ASKHEX;
 261                                 break;
 262                         case 'K':
 263                                 verbose = YES;
 264                                 genkeyf = optarg;
 265                                 break;
 266                         case 't':
 267                                 tweakf = optarg;
 268                                 do_full_key = NO;
 269                                 break;
 270                         case 'l':
 271                                 if (maxlen != NOFSIZE) break;
 272
 273                                 maxlen = tfc_humanfsize(optarg, &stoi);
 274                                 if (!str_empty(stoi)) {
 275                                         maxlen = tfc_fnamesize(optarg, YES);
 276                                         maxlen = tfc_modifysize(maxlen, strchr(optarg, ':'));
 277                                         if (maxlen == NOFSIZE) xerror(NO, YES, YES,
 278                                         "%s: invalid count value", optarg);
 279                                 }
 280                                 else maxlen = tfc_modifysize(maxlen, strchr(optarg, ':'));
 281                                 if (counter_opt == TFC_CTR_HEAD)
 282                                         maxlen += TF_BLOCK_SIZE;
 283                                 break;
 284                         case 'w':
 285                                 overwrite_source = YES;
 286                                 break;
 287                         case 'E':
 288                                 if (!strcmp(optarg, "xall")) {
 289                                         catch_all_errors = YES;
 290                                         break;
 291                                 }
 292                                 if (!strcmp(optarg, "xseek")) {
 293                                         ignore_seek_errors = YES;
 294                                         break;
 295                                 }
 296                                 if (!strcmp(optarg, "exit"))
 297                                         error_action = TFC_ERRACT_EXIT;
 298                                 else if (!strncmp(optarg, "cont", 4))
 299                                         error_action = TFC_ERRACT_CONT;
 300                                 else if (!strcmp(optarg, "sync"))
 301                                         error_action = TFC_ERRACT_SYNC;
 302                                 else if (!strcmp(optarg, "lsync"))
 303                                         error_action = TFC_ERRACT_LSYNC;
 304                                 else xerror(NO, YES, YES, "invalid error action %s specified", optarg);
 305                                 break;
 306                         case 'o':
 307                                 open_log(optarg);
 308                                 break;
 309                         case 'O':
 310                                 s = d = optarg; t = NULL;
 311                                 while ((s = strtok_r(d, ",", &t))) {
 312                                         if (d) d = NULL;
 313                                         if (!strcmp(s, "sync"))
 314                                                 write_flags |= O_SYNC;
 315                                         else if (!strcmp(s, "trunc"))
 316                                                 write_flags |= O_TRUNC;
 317                                         else if (!strcmp(s, "append"))
 318                                                 write_flags |= O_APPEND;
 319                                         else if (!strcmp(s, "fsync"))
 320                                                 do_fsync = YES;
 321                                         else if (!strcmp(s, "pad"))
 322                                                 do_pad = YES;
 323                                         else if (!strcmp(s, "ro"))
 324                                                 read_only = YES;
 325                                         else if (!strcmp(s, "rw"))
 326                                                 read_only = NO;
 327                                         else if (!strcmp(s, "xtime"))
 328                                                 do_preserve_time = YES;
 329                                         else if (!strcmp(s, "gibsize"))
 330                                                 do_stats_in_gibs = YES;
 331                                         else if (!strcmp(s, "plainstats"))
 332                                                 do_statline_dynamic = NO;
 333                                         else if (!strcmp(s, "statless"))
 334                                                 do_less_stats = YES;
 335                                         else if (!strcmp(s, "norepeat"))
 336                                                 no_repeat = YES;
 337                                         else if (!strncmp(s, "prompt", 6) && *(s+6) == '=')
 338                                                 pw_prompt = s+7;
 339                                         else if (!strncmp(s, "macprompt", 9) && *(s+9) == '=')
 340                                                 mac_pw_prompt = s+10;
 341                                         else if (!strcmp(s, "shorthex"))
 342                                                 do_full_hexdump = NO;
 343                                         else if (!strcmp(s, "fullkey"))
 344                                                 do_full_key = YES;
 345                                         else if (!strcmp(s, "showsecrets"))
 346                                                 show_secrets = YES;
 347                                         else if (!strcmp(s, "finished"))
 348                                                 show_when_done = YES;
 349                                         else if (!strcmp(s, "pid"))
 350                                                 show_pid = YES;
 351                                         else if (!strncmp(s, "readloops", 9) && *(s+9) == '=') {
 352                                                 do_read_loops = tfc_humanfsize(s+10, &stoi);
 353                                                 if (!str_empty(stoi)) do_read_loops = NOSIZE;
 354                                         }
 355                                         else if (!strncmp(s, "logfile", 7) && *(s+7) == '=')
 356                                                 open_log(s+8);
 357                                         else if (!strncmp(s, "iobs", 4) && *(s+4) == '=') {
 358                                                 s += 5;
 359                                                 blksize = (size_t)tfc_humanfsize(s, &stoi);
 360                                                 if (!str_empty(stoi)) {
 361                                                         blksize = (size_t)tfc_fnamesize(s, YES);
 362                                                         blksize = (size_t)tfc_modifysize((tfc_fsize)blksize, strchr(s, ':'));
 363                                                         if (blksize == NOSIZE) xerror(NO, YES, YES,
 364                                                         "%s: invalid block size value", s);
 365                                                 }
 366                                                 else blksize = (size_t)tfc_modifysize((tfc_fsize)blksize, strchr(s, ':'));
 367                                                 if (do_edcrypt != TFC_DO_PLAIN && blksize < TF_BLOCK_SIZE) xerror(NO, YES, YES,
 368                                                         "%s: block size is lesser than TF_BLOCK_SIZE (%u bytes)", s, TFC_U(TF_BLOCK_SIZE));
 369                                                 if (blksize > TFC_BLKSIZE) xerror(NO, YES, YES,
 370                                                         "%s: block size exceeds %u bytes",
 371                                                         s, TFC_U(TFC_BLKSIZE));
 372                                         }
 373                                         else if (!strncmp(s, "xtsblocks", 9) && *(s+9) == '=') {
 374                                                 s += 10;
 375                                                 xtsblocks = (size_t)tfc_humanfsize(s, &stoi);
 376                                                 if (!str_empty(stoi)) {
 377                                                         xtsblocks = (size_t)tfc_fnamesize(s, YES);
 378                                                         xtsblocks = (size_t)tfc_modifysize((tfc_fsize)xtsblocks, strchr(s, ':'));
 379                                                         if (xtsblocks == NOSIZE) xerror(NO, YES, YES,
 380                                                         "%s: invalid blocks per xts block value", s);
 381                                                 }
 382                                                 else xtsblocks = (size_t)tfc_modifysize((tfc_fsize)xtsblocks, strchr(s, ':'));
 383                                                 if (TFC_BLKSIZE % xtsblocks) xerror(NO, YES, YES,
 384                                                         "%s: nr of blocks per xts block is not round to %u bytes",
 385                                                         s, TFC_U(TFC_BLKSIZE));
 386                                                 if ((xtsblocks * TF_BLOCK_SIZE) > TFC_BLKSIZE) xerror(NO, YES, YES,
 387                                                         "%s: nr of blocks per xts block exceeds %u bytes",
 388                                                         s, TFC_U(TFC_BLKSIZE));
 389                                         }
 390                                         else if (!strncmp(s, "iseek", 5) && *(s+5) == '=') {
 391                                                 s += 6;
 392                                                 iseek = tfc_humanfsize(s, &stoi);
 393                                                 if (!str_empty(stoi)) {
 394                                                         iseek = tfc_fnamesize(s, YES);
 395                                                         iseek = tfc_modifysize(iseek, strchr(s, ':'));
 396                                                         if (iseek == NOFSIZE) xerror(NO, YES, YES,
 397                                                         "%s: invalid iseek value", s);
 398                                                 }
 399                                                 else iseek = tfc_modifysize(iseek, strchr(s, ':'));
 400                                                 if (ctr_mode != TFC_MODE_PLAIN && iseek % TF_BLOCK_SIZE)
 401                                                         xerror(NO, YES, YES,
 402                                                                 "%s: not round to TF block size "
 403                                                                 "of %u bytes",
 404                                                                 s, TFC_U(TF_BLOCK_SIZE));
 405                                                 iseek_blocks = iseek / TF_BLOCK_SIZE;
 406                                         }
 407                                         else if (!strncmp(s, "ixseek", 6) && *(s+6) == '=') {
 408                                                 s += 7;
 409                                                 iseek = tfc_humanfsize(s, &stoi);
 410                                                 if (!str_empty(stoi)) {
 411                                                         iseek = tfc_fnamesize(s, YES);
 412                                                         iseek = tfc_modifysize(iseek, strchr(s, ':'));
 413                                                         if (iseek == NOFSIZE) xerror(NO, YES, YES,
 414                                                                 "%s: invalid ixseek value", s);
 415                                                 }
 416                                                 else iseek = tfc_modifysize(iseek, strchr(s, ':'));
 417                                         }
 418                                         else if (!strncmp(s, "ictr", 4) && *(s+4) == '=') {
 419                                                 s += 5;
 420                                                 iseek_blocks = tfc_humanfsize(s, &stoi);
 421                                                 if (!str_empty(stoi)) {
 422                                                         iseek_blocks = tfc_fnamesize(s, YES);
 423                                                         if (iseek_blocks == NOFSIZE)
 424                                                                 xerror(NO, YES, YES,
 425                                                                 "%s: invalid ictr value", s);
 426                                                         iseek_blocks /= TF_BLOCK_SIZE;
 427                                                         iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 428                                                 }
 429                                                 else iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 430                                         }
 431                                         else if (!strncmp(s, "ixctr", 5) && *(s+5) == '=') {
 432                                                 s += 6;
 433                                                 iseek_blocks = tfc_humanfsize(s, &stoi);
 434                                                 if (!str_empty(stoi)) {
 435                                                         iseek_blocks = tfc_fnamesize(s, YES);
 436                                                         iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 437                                                         if (iseek_blocks == NOFSIZE)
 438                                                                 xerror(NO, YES, YES,
 439                                                                 "%s: invalid ixctr value", s);
 440                                                 }
 441                                                 else iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 442                                                 if (iseek_blocks % TF_BLOCK_SIZE)
 443                                                         xerror(NO, YES, YES,
 444                                                         "%s: not round to TF block size "
 445                                                         "of %u bytes", s, TFC_U(TF_BLOCK_SIZE));
 446                                                 iseek_blocks /= TF_BLOCK_SIZE;
 447                                         }
 448                                         else if (!strncmp(s, "oseek", 5) && *(s+5) == '=') {
 449                                                 s += 6;
 450                                                 oseek = tfc_humanfsize(s, &stoi);
 451                                                 if (!str_empty(stoi)) {
 452                                                         oseek = tfc_fnamesize(s, YES);
 453                                                         oseek = tfc_modifysize(oseek, strchr(s, ':'));
 454                                                         if (oseek == NOFSIZE) xerror(NO, YES, YES,
 455                                                         "%s: invalid oseek value", s);
 456                                                 }
 457                                                 else oseek = tfc_modifysize(oseek, strchr(s, ':'));
 458                                         }
 459                                         else if (!strncmp(s, "ioseek", 6) && *(s+6) == '=') {
 460                                                 s += 7;
 461
 462                                                 iseek = tfc_humanfsize(s, &stoi);
 463                                                 if (!str_empty(stoi)) {
 464                                                         iseek = tfc_fnamesize(s, YES);
 465                                                         iseek = tfc_modifysize(iseek, strchr(s, ':'));
 466                                                         if (iseek == NOFSIZE) xerror(NO, YES, YES,
 467                                                         "%s: invalid iseek value", s);
 468                                                 }
 469                                                 else iseek = tfc_modifysize(iseek, strchr(s, ':'));
 470                                                 if (ctr_mode != TFC_MODE_PLAIN && iseek % TF_BLOCK_SIZE)
 471                                                         xerror(NO, YES, YES,
 472                                                                 "%s: not round to TF block size "
 473                                                                 "of %u bytes",
 474                                                                 s, TFC_U(TF_BLOCK_SIZE));
 475                                                 iseek_blocks = iseek / TF_BLOCK_SIZE;
 476
 477                                                 oseek = tfc_humanfsize(s, &stoi);
 478                                                 if (!str_empty(stoi)) {
 479                                                         oseek = tfc_fnamesize(s, YES);
 480                                                         oseek = tfc_modifysize(oseek, strchr(s, ':'));
 481                                                         if (oseek == NOFSIZE) xerror(NO, YES, YES,
 482                                                         "%s: invalid oseek value", s);
 483                                                 }
 484                                                 else oseek = tfc_modifysize(oseek, strchr(s, ':'));
 485                                         }
 486                                         else if (!strncmp(s, "count", 5) && *(s+5) == '=') {
 487                                                 s += 6;
 488                                                 maxlen = tfc_humanfsize(s, &stoi);
 489                                                 if (!str_empty(stoi)) {
 490                                                         maxlen = tfc_fnamesize(s, YES);
 491                                                         maxlen = tfc_modifysize(maxlen, strchr(s, ':'));
 492                                                         if (maxlen == NOFSIZE) xerror(NO, YES, YES,
 493                                                         "%s: invalid count value", s);
 494                                                 }
 495                                                 else maxlen = tfc_modifysize(maxlen, strchr(s, ':'));
 496                                                 if (counter_opt == TFC_CTR_HEAD)
 497                                                         maxlen += TF_BLOCK_SIZE;
 498                                         }
 499                                         else if (!strncmp(s, "ftrunc", 6) && *(s+6) == '=') {
 500                                                 s += 7;
 501                                                 if (!strcmp(s, "tail")) {
 502                                                         do_ftrunc = TFC_FTRUNC_TAIL;
 503                                                         ftrunc_dfd = NOFSIZE;
 504                                                 }
 505                                                 else {
 506                                                         do_ftrunc = TFC_DO_FTRUNC;
 507                                                         ftrunc_dfd = tfc_humanfsize(s, &stoi);
 508                                                         if (!str_empty(stoi)) {
 509                                                                 ftrunc_dfd = tfc_fnamesize(s, YES);
 510                                                                 ftrunc_dfd = tfc_modifysize(ftrunc_dfd, strchr(s, ':'));
 511                                                                 if (ftrunc_dfd == NOFSIZE) xerror(NO, YES, YES,
 512                                                                 "%s: invalid ftrunc value", s);
 513                                                         }
 514                                                         else ftrunc_dfd = tfc_modifysize(ftrunc_dfd, strchr(s, ':'));
 515                                                 }
 516                                         }
 517                                         else if (!strncmp(s, "xkey", 4) && *(s+4) == '=') {
 518                                                 s += 5;
 519                                                 maxkeylen = tfc_humanfsize(s, &stoi);
 520                                                 if (!str_empty(stoi)) {
 521                                                         maxkeylen = tfc_fnamesize(s, YES);
 522                                                         maxkeylen = tfc_modifysize(maxkeylen, strchr(s, ':'));
 523                                                         if (maxkeylen == NOSIZE)
 524                                                                 xerror(NO, YES, YES,
 525                                                                 "%s: invalid key length value", s);
 526                                                 }
 527                                                 else maxkeylen = tfc_modifysize(maxkeylen, strchr(s, ':'));
 528                                         }
 529                                         else if (!strncmp(s, "okey", 4) && *(s+4) == '=') {
 530                                                 s += 5;
 531                                                 keyoffset = tfc_humanfsize(s, &stoi);
 532                                                 if (!str_empty(stoi)) {
 533                                                         keyoffset = tfc_fnamesize(s, YES);
 534                                                         keyoffset = tfc_modifysize(keyoffset, strchr(s, ':'));
 535                                                         if (keyoffset == NOFSIZE)
 536                                                                 xerror(NO, YES, YES,
 537                                                                 "%s: invalid key offset value", s);
 538                                                 }
 539                                                 else keyoffset = tfc_modifysize(keyoffset, strchr(s, ':'));
 540                                         }
 541                                         else if (!strncmp(s, "xctr", 4) && *(s+4) == '=') {
 542                                                 s += 5;
 543                                                 ctrsz = tfc_humanfsize(s, &stoi);
 544                                                 if (!str_empty(stoi)) {
 545                                                         ctrsz = (size_t)tfc_fnamesize(s, YES);
 546                                                         ctrsz = (size_t)tfc_modifysize((tfc_fsize)ctrsz, strchr(s, ':'));
 547                                                         if (ctrsz == NOSIZE)
 548                                                                 xerror(NO, YES, YES,
 549                                                                 "%s: invalid counter length value", s);
 550                                                 }
 551                                                 else ctrsz = (size_t)tfc_modifysize((tfc_fsize)ctrsz, strchr(s, ':'));
 552                                                 if (ctrsz > TF_BLOCK_SIZE)
 553                                                         xerror(NO, YES, YES, "%s: counter size cannot exceed TF block size", s);
 554                                         }
 555                                         else xerror(NO, YES, YES, "invalid option %s", s);
 556                                 }
 557                                 break;
 558                         case 'S':
 559                                 do_mac = TFC_MAC_SIGN;
 560                                 if (strcasecmp(optarg, "mac") != 0)
 561                                         do_mac_file = optarg;
 562                                 break;
 563                         case 'M':
 564                                 do_mac = TFC_MAC_VRFY;
 565                                 if (!strcasecmp(optarg, "drop"))
 566                                         do_mac = TFC_MAC_DROP;
 567                                 else if (strcasecmp(optarg, "mac") != 0)
 568                                         do_mac_file = optarg;
 569                                 break;
 570                         case 'm':
 571                         case 'u':
 572                                 if (do_mac != TFC_MAC_VRFY)
 573                                         xerror(NO, YES, YES, "signature source was not specified");
 574                                 do_mac = TFC_MAC_JUST_VRFY;
 575                                 if (c == 'u') do_mac = TFC_MAC_JUST_VRFY2;
 576                                 break;
 577                         case 'R':
 578                         case 'Z':
 579                                 if (maxlen != NOFSIZE) {
 580                                         if (c == 'Z') genzero_nr_bytes = maxlen;
 581                                         else genrandom_nr_bytes = maxlen;
 582                                 }
 583                                 else {
 584                                         tfc_fsize t;
 585                                         if (!strcasecmp(optarg, "cbs"))
 586                                                 t = TF_BLOCK_SIZE;
 587                                         else if (!strcasecmp(optarg, "ks"))
 588                                                 t = TF_FROM_BITS(TFC_KEY_BITS);
 589                                         else if (!strcasecmp(optarg, "xks"))
 590                                                 t = TF_FROM_BITS(TFC_KEY_BITS) * 2;
 591                                         else if (!strcasecmp(optarg, "iobs"))
 592                                                 t = blksize;
 593                                         else {
 594                                                 t = tfc_humanfsize(optarg, &stoi);
 595                                                 if (!str_empty(stoi)) {
 596                                                         t = tfc_fnamesize(optarg, NO);
 597                                                         t = tfc_modifysize(t, strchr(optarg, ':'));
 598                                                 }
 599                                                 else t = tfc_modifysize(t, strchr(optarg, ':'));
 600                                         }
 601                                         if (c == 'Z') genzero_nr_bytes = maxlen = t;
 602                                         else genrandom_nr_bytes = maxlen = t;
 603                                 }
 604                                 break;
 605                         case 'a':
 606                                 do_preserve_time = YES;
 607                                 break;
 608                         case 'A':
 609                                 do_outfmt = TFC_OUTFMT_B64;
 610                                 break;
 611                         case 'W':
 612                                 do_outfmt = TFC_OUTFMT_RAW;
 613                                 break;
 614                         case 'H':
 615                                 do_outfmt = TFC_OUTFMT_HEX;
 616                                 break;
 617                         case 'q':
 618                                 quiet = YES;
 619                                 xexit_no_nl = YES;
 620                                 verbose = NO;
 621                                 do_full_hexdump = NO;
 622                                 status_timer = 0;
 623                                 break;
 624                         case 'v':
 625                                 verbose = YES;
 626                                 break;
 627                         case 'V':
 628                                 td = strtod(optarg, &stoi);
 629                                 status_timer = TFC_DTOUSECS(td);
 630                                 if (status_timer <= TFC_DTOUSECS(0) || !str_empty(stoi)) status_timer = 0;
 631                                 break;
 632                         default:
 633                                 usage();
 634                                 break;
 635                 }
 636         }
 637
 638         if (!strcmp(progname, "tfbench")) {
 639                 if (!*(argv+optind)) usage();
 640
 641                 td = strtod(*(argv+optind), &stoi);
 642                 if (td <= TFC_DTOUSECS(0) || !str_empty(stoi))
 643                         xerror(NO, YES, YES,
 644                         "%s: invalid benchmark time in seconds", *(argv+optind));
 645                 bench_timer = TFC_DTOUSECS(td);
 646                 do_benchmark(bench_timer, td);
 647         }
 648         if (genrandom_nr_bytes) {
 649                 ctr_mode = TFC_MODE_STREAM;
 650                 do_edcrypt = TFC_DO_ENCRYPT;
 651                 gen_write_bytes(*(argv+optind), oseek, genrandom_nr_bytes);
 652         }
 653         if (genzero_nr_bytes) {
 654                 ctr_mode = TFC_MODE_PLAIN;
 655                 do_edcrypt = TFC_DO_PLAIN;
 656                 gen_write_bytes(*(argv+optind), oseek, genzero_nr_bytes);
 657         }
 658
 659         if (rawkey && password)
 660                 xerror(NO, YES, YES, "Cannot use rawkey and hashing password!");
 661         if (do_edcrypt == TFC_DO_ENCRYPT && do_mac >= TFC_MAC_VRFY)
 662                 xerror(NO, YES, YES, "Cannot encrypt and verify signature!");
 663         if (do_edcrypt == TFC_DO_DECRYPT && do_mac == TFC_MAC_SIGN)
 664                 xerror(NO, YES, YES, "Cannot decrypt and calculate signature!");
 665         if (do_edcrypt == TFC_DO_DECRYPT && counter_opt == TFC_CTR_RAND)
 666                 xerror(NO, YES, YES, "Cannot decrypt and embed a generated CTR into file!");
 667         if (do_edcrypt == TFC_DO_ENCRYPT && counter_opt == TFC_CTR_HEAD)
 668                 xerror(NO, YES, YES, "Cannot encrypt and read CTR from source!");
 669         if (overwrite_source && counter_opt == TFC_CTR_RAND)
 670                 xerror(NO, YES, YES, "Cannot embed a CTR into file when overwriting it!");
 671         if (ctr_mode == TFC_MODE_PLAIN
 672         && (do_edcrypt || do_mac || rawkey
 673         || mackey_opt || counter_opt || counter_file))
 674                 xerror(NO, YES, YES, "Encryption facility is disabled when in plain IO mode.");
 675
 676         errno = 0;
 677         do_stop = NO;
 678
 679         if (saltf) {
 680                 int saltfd;
 681
 682                 memset(tfc_salt, 0, TFC_MAX_SALT);
 683                 tfc_saltsz = 0;
 684                 if (!strcasecmp(saltf, "disable")) goto _nosalt;
 685
 686                 if (!strcmp(saltf, "-")) saltfd = 0;
 687                 else saltfd = xopen(saltf, O_RDONLY | O_LARGEFILE);
 688                 lio = xread(saltfd, tfc_salt, TFC_MAX_SALT - TF_FROM_BITS(TFC_KEY_BITS));
 689                 if (lio == NOSIZE) xerror(NO, NO, YES, "%s", saltf);
 690                 tfc_saltsz = lio;
 691                 xclose(saltfd);
 692         }
 693
 694 _nosalt:
 695         if (mackey_opt == TFC_MACKEY_FILE && mackeyf) {
 696                 int mkfd = -1;
 697                 tfc_yesno do_stop;
 698
 699                 if (!strcmp(mackeyf, "-")) mkfd = 0;
 700                 else mkfd = xopen(mackeyf, O_RDONLY | O_LARGEFILE);
 701
 702                 skein_init(&sk, TFC_KEY_BITS);
 703
 704                 do_stop = NO;
 705                 while (1) {
 706                         if (do_stop) break;
 707                         pblk = tmpdata;
 708                         ldone = 0;
 709                         lrem = lblock = sizeof(tmpdata);
 710                         if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(mkfd);
 711 _mkragain:              lio = xread(mkfd, pblk, lrem);
 712                         if (lio == 0 && do_stop == NO) do_stop = YES;
 713                         if (lio != NOSIZE) ldone += lio;
 714                         else {
 715                                 if (errno != EIO && catch_all_errors != YES)
 716                                         xerror(NO, NO, NO, "%s", mackeyf);
 717                                 switch (error_action) {
 718                                         case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", mackeyf); goto _mkragain; break;
 719                                         case TFC_ERRACT_SYNC:
 720                                         case TFC_ERRACT_LSYNC:
 721                                                 xerror(YES, NO, NO, "%s", mackeyf);
 722                                                 lio = ldone = lrem = lblock;
 723                                                 memset(tmpdata, 0, lio);
 724                                                 if (rdpos == NOFSIZE) lseek(mkfd, lio, SEEK_CUR);
 725                                                 else lseek(mkfd, rdpos + lio, SEEK_SET);
 726                                                 break;
 727                                         default: xerror(NO, NO, NO, "%s", mackeyf); break;
 728                                 }
 729                         }
 730                         if (lio && lio < lrem) {
 731                                 pblk += lio;
 732                                 lrem -= lio;
 733                                 goto _mkragain;
 734                         }
 735
 736                         skein_update(&sk, tmpdata, ldone);
 737                 }
 738
 739                 skein_final(mackey, &sk);
 740
 741                 xclose(mkfd);
 742         }
 743         else if (mackey_opt == TFC_MACKEY_PASSWORD) {
 744                 memset(&getps, 0, sizeof(struct getpasswd_state));
 745                 getps.fd = getps.efd = -1;
 746                 getps.passwd = pwdask;
 747                 getps.pwlen = sizeof(pwdask)-1;
 748                 getps.echo = mac_pw_prompt ? mac_pw_prompt : "Enter MAC password: ";
 749                 getps.charfilter = (show_secrets == YES) ? getps_plain_filter : getps_filter;
 750                 getps.maskchar = (show_secrets == YES) ? 0 : 'x';
 751                 getps.flags = GETP_WAITFILL;
 752                 n = xgetpasswd(&getps);
 753                 if (n == NOSIZE) xerror(NO, NO, YES, "getting MAC password");
 754                 if (n == ((size_t)-2)) xexit(1);
 755                 if (verbose) say_hint(pwdask, n, "MAC password hint");
 756                 skein(mackey, TF_MAX_BITS, NULL, pwdask, n);
 757         }
 758
 759
 760         if ((strlen(progname) <= 9)
 761         && ((!strcmp(progname, "sksum"))
 762         || ((!memcmp(progname, "sk", 2))
 763         && (!memcmp(progname+3, "sum", 3)
 764         || !memcmp(progname+4, "sum", 3)
 765         || !memcmp(progname+5, "sum", 3)
 766         || !memcmp(progname+6, "sum", 3)))))
 767                 do_sksum(progname, argv+optind);
 768         if (!strcmp(progname, "tfbase64")) do_edbase64(argv+optind);
 769
 770         idx = optind;
 771
 772         if (argv[idx]) {
 773                 if (password || rawkey > TFC_RAWKEY_KEYFILE) goto _nokeyfd;
 774                 if (!strcmp(argv[idx], "-")) kfd = 0;
 775                 else kfd = xopen(argv[idx], O_RDONLY | O_LARGEFILE);
 776
 777                 lio = strnlen(argv[idx], PATH_MAX);
 778                 memset(argv[idx], '*', lio);
 779
 780                 idx++;
 781         }
 782         else password = YES;
 783
 784         errno = 0;
 785         if (do_full_key == NO && tweakf) {
 786                 int twfd;
 787
 788                 if (!strcmp(tweakf, "-")) twfd = 0;
 789                 else twfd = open(tweakf, O_RDONLY | O_LARGEFILE);
 790                 if (twfd == -1) xerror(NO, NO, YES, "%s", tweakf);
 791                 lio = ldone = xread(twfd, tweak, TF_TWEAK_SIZE);
 792                 if (lio == NOSIZE) xerror(NO, NO, YES, "%s", tweakf);
 793                 if (ldone < TF_TWEAK_SIZE)
 794                         xerror(NO, NO, YES, "%s: %zu bytes tweak required", tweakf, TF_TWEAK_SIZE);
 795                 xclose(twfd);
 796         }
 797
 798 _nokeyfd:
 799         errno = 0;
 800         if (argv[idx]) {
 801                 if (!strcmp(argv[idx], "-") && kfd) sfd = 0;
 802                 else {
 803                         sfd = xopen(argv[idx], O_RDONLY | O_LARGEFILE);
 804                         if (do_preserve_time) if (fstat(sfd, &s_stat) == -1)
 805                                 xerror(YES, NO, YES, "stat(%s)", argv[idx]);
 806                 }
 807
 808                 if ((do_mac >= TFC_MAC_VRFY || do_mac <= TFC_MAC_DROP) && !do_mac_file) {
 809                         maxlen = tfc_fdsize(sfd);
 810                         if (maxlen == NOFSIZE)
 811                                 xerror(NO, YES, YES,
 812                                 "Cannot verify embedded MAC with non-seekable source!");
 813                         maxlen -= TF_FROM_BITS(macbits);
 814                 }
 815                 srcfname = argv[idx];
 816                 idx++;
 817         }
 818
 819         if (!do_mac_file && (do_mac >= TFC_MAC_VRFY && sfd == 0))
 820                 xerror(NO, YES, YES, "Cannot verify embedded MAC with non-seekable source!");
 821
 822         if (ctrsz == NOSIZE) ctrsz = TF_BLOCK_SIZE;
 823         if (ctrsz > TF_BLOCK_SIZE) ctrsz = TF_BLOCK_SIZE;
 824
 825         if (ctr_mode == TFC_MODE_ECB) goto _ctrskip1;
 826         errno = 0;
 827         if (counter_file) {
 828                 int ctrfd;
 829
 830                 if (!strcmp(counter_file, "-")) ctrfd = 0;
 831                 else ctrfd = xopen(counter_file, O_RDONLY | O_LARGEFILE);
 832                 lio = xread(ctrfd, ctr, ctrsz);
 833                 if (lio == NOSIZE) xerror(NO, NO, YES, "%s", counter_file);
 834                 if (lio < ctrsz) xerror(NO, YES, YES, "counter file is too small (%zu)!", lio);
 835                 xclose(ctrfd);
 836         }
 837         else if (counter_opt == TFC_CTR_HEAD) {
 838                 pblk = ctr;
 839                 ldone = 0;
 840                 lrem = lblock = ctrsz;
 841                 if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(sfd);
 842 _ctrragain:     lio = xread(sfd, pblk, lrem);
 843                 if (lio != NOSIZE) ldone += lio;
 844                 else {
 845                         if (errno != EIO && catch_all_errors != YES)
 846                                 xerror(NO, NO, NO, "%s", srcfname);
 847                         switch (error_action) {
 848                                 case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", srcfname); goto _ctrragain; break;
 849                                 case TFC_ERRACT_SYNC:
 850                                 case TFC_ERRACT_LSYNC:
 851                                         xerror(YES, NO, NO, "%s", srcfname);
 852                                         lio = ldone = lrem = lblock;
 853                                         memset(ctr, 0, lio);
 854                                         if (rdpos == NOFSIZE) lseek(sfd, lio, SEEK_CUR);
 855                                         else lseek(sfd, rdpos + lio, SEEK_SET);
 856                                         break;
 857                                 default: xerror(NO, NO, NO, "%s", srcfname); break;
 858                         }
 859                 }
 860                 if (lio && lio < lrem) {
 861                         pblk += lio;
 862                         lrem -= lio;
 863                         goto _ctrragain;
 864                 }
 865                 total_processed_src += ldone;
 866         }
 867
 868 _ctrskip1:
 869         if (iseek) {
 870                 if (counter_opt == TFC_CTR_HEAD && ctr_mode != TFC_MODE_ECB)
 871                         iseek += ctrsz;
 872                 if (lseek(sfd, iseek, SEEK_SET) == -1)
 873                         xerror(ignore_seek_errors, NO, NO, "%s: seek failed", srcfname);
 874         }
 875
 876         if (ctr_mode == TFC_MODE_PLAIN) goto _plain;
 877
 878         if (verbose) tfc_esay("%s: hashing password", tfc_format_pid(progname));
 879
 880         if (rawkey == TFC_RAWKEY_KEYFILE) {
 881                 tfc_yesno xtskeyset = NO;
 882
 883                 pblk = key;
 884 _xts2key:       ldone = 0;
 885                 lrem = lblock = TF_FROM_BITS(TFC_KEY_BITS);
 886                 if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(kfd);
 887 _keyragain:     lio = xread(kfd, pblk, lrem);
 888                 if (lio != NOSIZE) ldone += lio;
 889                 else {
 890                         if (errno != EIO && catch_all_errors != YES)
 891                                 xerror(NO, NO, NO, "reading key");
 892                         switch (error_action) {
 893                                 case TFC_ERRACT_CONT: xerror(YES, NO, NO, "reading key"); goto _keyragain; break;
 894                                 case TFC_ERRACT_SYNC:
 895                                 case TFC_ERRACT_LSYNC:
 896                                         xerror(YES, NO, NO, "reading key");
 897                                         lio = ldone = lrem = lblock;
 898                                         memset(key, 0, lio);
 899                                         if (rdpos == NOFSIZE) lseek(kfd, lio, SEEK_CUR);
 900                                         else lseek(kfd, rdpos + lio, SEEK_SET);
 901                                         break;
 902                                 default: xerror(NO, NO, NO, "reading key"); break;
 903                         }
 904                 }
 905                 if (lio && lio < lrem) {
 906                         pblk += lio;
 907                         lrem -= lio;
 908                         goto _keyragain;
 909                 }
 910                 if (ldone < lblock) xerror(NO, YES, YES, "rawkey too small! (%zu)", ldone);
 911
 912                 if (ctr_mode == TFC_MODE_XTS) {
 913                         if (xtskeyset == NO) {
 914                                 pblk = xtskey;
 915                                 xtskeyset = YES;
 916                                 goto _xts2key;
 917                         }
 918                 }
 919         }
 920         else if (rawkey == TFC_RAWKEY_ASKSTR) {
 921                 tfc_yesno xtskeyset = NO;
 922
 923                 pblk = key; n = sizeof(key);
 924 _xts2keyaskstr: memset(&getps, 0, sizeof(struct getpasswd_state));
 925                 getps.fd = getps.efd = -1;
 926                 getps.passwd = (char *)pblk;
 927                 getps.pwlen = n;
 928                 getps.echo = pw_prompt ? pw_prompt : "Enter rawkey (str): ";
 929                 getps.charfilter = (show_secrets == YES) ? getps_plain_filter : getps_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 string rawkey");
 934                 if (n == ((size_t)-2)) xexit(1);
 935                 if (verbose) say_hint(pblk, n, "Raw string key hint");
 936                 if (ctr_mode == TFC_MODE_XTS) {
 937                         if (xtskeyset == NO) {
 938                                 pblk = xtskey; n = sizeof(xtskey);
 939                                 xtskeyset = YES;
 940                                 goto _xts2keyaskstr;
 941                         }
 942                 }
 943         }
 944         else if (rawkey == TFC_RAWKEY_ASKHEX) {
 945                 tfc_yesno xtskeyset = NO;
 946
 947                 pblk = key;
 948 _rawkey_hex_again:
 949                 memset(&getps, 0, sizeof(struct getpasswd_state));
 950                 getps.fd = getps.efd = -1;
 951                 getps.passwd = pwdask;
 952                 getps.pwlen = (TF_FROM_BITS(TFC_KEY_BITS)*2);
 953                 getps.echo = pw_prompt ? pw_prompt : "Enter rawkey (hex): ";
 954                 getps.charfilter = (show_secrets == YES) ? getps_plain_hex_filter : getps_hex_filter;
 955                 getps.maskchar = (show_secrets == YES) ? 0 : 'x';
 956                 getps.flags = GETP_WAITFILL;
 957                 n = xgetpasswd(&getps);
 958                 if (n == NOSIZE) xerror(NO, NO, YES, "getting hex rawkey");
 959                 if (n == ((size_t)-2)) xexit(1);
 960                 if (n % 2) {
 961                         tfc_esay("Please input even number of hex digits!");
 962                         goto _rawkey_hex_again;
 963                 }
 964                 hex2bin(pblk, pwdask);
 965                 memset(pwdask, 0, sizeof(pwdask));
 966                 if (verbose) say_hint(pblk, n/2, "Raw hex key hint");
 967                 if (ctr_mode == TFC_MODE_XTS) {
 968                         if (xtskeyset == NO) {
 969                                 pblk = xtskey;
 970                                 xtskeyset = YES;
 971                                 goto _rawkey_hex_again;
 972                         }
 973                 }
 974         }
 975         else if (password) {
 976 _pwdagain:      memset(&getps, 0, sizeof(struct getpasswd_state));
 977                 getps.fd = getps.efd = -1;
 978                 getps.passwd = pwdask;
 979                 getps.pwlen = sizeof(pwdask)-1;
 980                 getps.echo = pw_prompt ? pw_prompt : "Enter password: ";
 981                 getps.charfilter = (show_secrets == YES) ? getps_plain_filter : getps_filter;
 982                 getps.maskchar = (show_secrets == YES) ? 0 : 'x';
 983                 getps.flags = GETP_WAITFILL;
 984                 n = xgetpasswd(&getps);
 985                 if (n == NOSIZE) xerror(NO, NO, YES, "getting password");
 986                 if (n == ((size_t)-2)) xexit(1);
 987                 if (do_edcrypt == TFC_DO_ENCRYPT && no_repeat == NO) {
 988                         getps.fd = getps.efd = -1;
 989                         getps.passwd = pwdagain;
 990                         getps.pwlen = sizeof(pwdagain)-1;
 991                         getps.echo = "Enter it again: ";
 992                         getps.flags = GETP_WAITFILL;
 993                         n = xgetpasswd(&getps);
 994                         if (n == NOSIZE) xerror(NO, NO, YES, "getting password again");
 995                         if (n == ((size_t)-2)) xexit(1);
 996                         if (strncmp(pwdask, pwdagain, sizeof(pwdagain)-1) != 0) {
 997                                 tfc_esay("Passwords are different, try again");
 998                                 goto _pwdagain;
 999                         }
1000                 }
1001                 if (verbose) say_hint(pwdask, n, "Password hint");
1002                 skein(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, pwdask, n);
1003                 memset(pwdask, 0, sizeof(pwdask));
1004                 memset(pwdagain, 0, sizeof(pwdagain));
1005         }
1006         else {
1007                 if (skeinfd(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, kfd, keyoffset, maxkeylen) != YES)
1008                         xerror(NO, NO, YES, "hashing key");
1009         }
1010
1011         if (rawkey == NO) {
1012                 if (tfc_saltsz > 0) {
1013                         memcpy(tfc_salt+tfc_saltsz, key, TF_FROM_BITS(TFC_KEY_BITS));
1014                         skein(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, tfc_salt, tfc_saltsz+TF_FROM_BITS(TFC_KEY_BITS));
1015                 }
1016                 if (nr_turns > 1) for (x = 0; x < nr_turns; x++)
1017                         skein(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
1018                 memset(tfc_salt, 0, TFC_MAX_SALT);
1019         }
1020
1021         if (ctr_mode == TFC_MODE_XTS && rawkey == NO) {
1022                 skein(xtskey, TF_NR_KEY_BITS, mackey_opt ? mackey : NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
1023         }
1024
1025         if (genkeyf) {
1026                 int krfd;
1027                 tfc_yesno xtskeyset = NO;
1028
1029                 pblk = key;
1030                 if (!strcmp(genkeyf, "-")) krfd = 1;
1031                 else krfd = xopen(genkeyf, O_WRONLY | O_CREAT | O_LARGEFILE | write_flags);
1032 _xts2genkey:    if (xwrite(krfd, pblk, TF_FROM_BITS(TFC_KEY_BITS)) == NOSIZE) xerror(NO, NO, YES, "%s", genkeyf);
1033                 if (do_fsync && fsync(krfd) == -1) xerror(NO, NO, YES, "%s", genkeyf);
1034                 if (verbose && xtskeyset == NO) {
1035                         tfc_esay("%s: password hashing done", tfc_format_pid(progname));
1036                         tfc_esay("%s: rawkey written to %s.", tfc_format_pid(progname), genkeyf);
1037                         tfc_esay("%s: Have a nice day!", tfc_format_pid(progname));
1038                 }
1039
1040                 if (ctr_mode == TFC_MODE_XTS) {
1041                         if (xtskeyset == NO) {
1042                                 pblk = xtskey;
1043                                 xtskeyset = YES;
1044                                 goto _xts2genkey;
1045                         }
1046                 }
1047
1048                 fchmod(krfd, 0600);
1049                 xclose(krfd);
1050                 xexit(0);
1051         }
1052
1053         if (do_mac != NO) {
1054                 if (mackey_opt == TFC_MACKEY_RAWKEY) skein(mackey, TF_MAX_BITS, key, key, TF_FROM_BITS(TFC_KEY_BITS));
1055                 if (ctr_mode < TFC_MODE_OCB) {
1056                         if (verbose) tfc_esay("%s: doing MAC calculation, processing speed "
1057                                 "will be slower.", tfc_format_pid(progname));
1058                         if (mackey_opt) skein_init_key(&sk, mackey, macbits);
1059                         else skein_init(&sk, macbits);
1060                 }
1061         }
1062
1063         if (!counter_file && counter_opt <= TFC_CTR_SHOW && ctr_mode != TFC_MODE_ECB) {
1064                 skein(ctr, TF_TO_BITS(ctrsz), mackey_opt ? mackey : NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
1065         }
1066
1067         tf_convkey(key);
1068         if (ctr_mode == TFC_MODE_XTS) tf_convkey(xtskey);
1069         if (do_full_key == NO) {
1070                 if (!tweakf) skein(tweak, TF_NR_TWEAK_BITS, NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
1071                 tf_tweak_set(key, tweak);
1072         }
1073         if (ctr_mode == TFC_MODE_ECB) goto _ctrskip2;
1074
1075         if (counter_opt == TFC_CTR_ZERO) memset(ctr, 0, ctrsz);
1076
1077         tfc_data_to_words64(&iseek_blocks, sizeof(iseek_blocks));
1078         tf_ctr_set(ctr, &iseek_blocks, sizeof(iseek_blocks));
1079         if (do_mac == TFC_MAC_JUST_VRFY2) memcpy(svctr, ctr, TF_BLOCK_SIZE);
1080
1081         if (counter_opt == TFC_CTR_SHOW) {
1082                 switch (do_outfmt) {
1083                         case TFC_OUTFMT_B64: tfc_printbase64(stderr, ctr, ctrsz, YES); break;
1084                         case TFC_OUTFMT_RAW: xwrite(2, ctr, ctrsz); break;
1085                         case TFC_OUTFMT_HEX: mehexdump(ctr, ctrsz, ctrsz, YES); break;
1086                 }
1087         }
1088         else if (counter_opt == TFC_CTR_RAND) tfc_getrandom(ctr, ctrsz);
1089
1090 _ctrskip2:
1091         if (kfd != -1) {
1092                 xclose(kfd);
1093                 kfd = -1;
1094         }
1095         if (verbose) tfc_esay("%s: password hashing done", tfc_format_pid(progname));
1096
1097         if (overwrite_source && srcfname) argv[idx] = srcfname;
1098
1099 _plain:
1100         if (argv[idx]) {
1101                 if (!strcmp(argv[idx], "-")) dfd = 1;
1102                 else dfd = xxopen(YES, argv[idx], O_RDWR | O_LARGEFILE | write_flags);
1103                 if (dfd == -1) dfd = xopen(argv[idx], O_WRONLY | O_CREAT | O_LARGEFILE | write_flags);
1104                 dstfname = argv[idx];
1105                 idx++;
1106         }
1107
1108         if (oseek) {
1109                 if (lseek(dfd, oseek, SEEK_SET) == -1)
1110                         xerror(ignore_seek_errors, NO, NO, "%s: seek failed", dstfname);
1111         }
1112
1113         for (x = 1; x < NSIG; x++) signal(x, SIG_IGN);
1114         memset(&sigact, 0, sizeof(sigact));
1115         sigact.sa_flags = SA_RESTART;
1116         sigact.sa_handler = print_crypt_status;
1117         sigaction(SIGUSR1, &sigact, NULL);
1118         sigaction(SIGALRM, &sigact, NULL);
1119         if (status_timer) setup_next_alarm(status_timer > 1000000 ? 1000000 : status_timer);
1120         sigact.sa_handler = change_status_width;
1121         sigaction(SIGQUIT, &sigact, NULL);
1122         sigact.sa_handler = change_status_timer;
1123         sigaction(SIGUSR2, &sigact, NULL);
1124         if (quiet == NO) {
1125                 sigact.sa_handler = print_crypt_status;
1126                 sigaction(SIGINT, &sigact, NULL);
1127                 sigaction(SIGTERM, &sigact, NULL);
1128                 sigaction(SIGTSTP, &sigact, NULL);
1129         }
1130         else {
1131                 sigact.sa_handler = exit_sigterm;
1132                 sigaction(SIGINT, &sigact, NULL);
1133                 sigaction(SIGTERM, &sigact, NULL);
1134                 sigact.sa_handler = handle_sigtstp;
1135                 sigaction(SIGTSTP, &sigact, NULL);
1136         }
1137         memset(&sigact, 0, sizeof(struct sigaction));
1138
1139         tfc_getcurtime(&delta_time);
1140
1141         errno = 0;
1142         if (counter_opt == TFC_CTR_RAND && ctr_mode != TFC_MODE_ECB) {
1143                 pblk = ctr;
1144                 lio = lrem = ctrsz;
1145                 ldone = 0;
1146 _ctrwagain:     lio = xwrite(dfd, pblk, lrem);
1147                 if (lio != NOSIZE) ldone += lio;
1148                 else xerror(NO, NO, NO, "%s", dstfname);
1149                 if (do_fsync && fsync(dfd) == -1) xerror(NO, NO, NO, "%s", dstfname);
1150                 if (lio < lrem) {
1151                         pblk += lio;
1152                         lrem -= lio;
1153                         goto _ctrwagain;
1154                 }
1155                 total_written_dst += ldone;
1156                 total_processed_dst += ldone;
1157                 delta_processed += ldone;
1158         }
1159
1160         if (ctr_mode == TFC_MODE_STREAM) tfe_init_iv(&tfe, key, ctr);
1161
1162         if (do_mac == TFC_MAC_JUST_VRFY2) {
1163                 rwd = tfc_fdgetpos(sfd);
1164                 if (rwd == NOFSIZE) {
1165                         tfc_esay("%s: WARNING: input is not seekable, disabling MAC testing mode", tfc_format_pid(progname));
1166                         do_mac = TFC_MAC_VRFY;
1167                 }
1168                 goto _nodecrypt_again_vrfy2;
1169
1170 _decrypt_again_vrfy2:
1171                 if (lseek(sfd, (off_t)rwd, SEEK_SET) == ((off_t)-1)) {
1172                         xerror(ignore_seek_errors, NO, YES, "MAC testing seek failed");
1173                 }
1174                 total_processed_src = rwd;
1175                 memcpy(ctr, svctr, TF_BLOCK_SIZE);
1176                 memset(svctr, 0, TF_BLOCK_SIZE);
1177         }
1178
1179 _nodecrypt_again_vrfy2:
1180         loopcnt = 1;
1181         errno = 0;
1182         do_stop = NO;
1183         while (1) {
1184                 if (do_stop) break;
1185                 pblk = srcblk;
1186                 ldone = 0;
1187                 lrem = lblock = blk_len_adj(maxlen, total_processed_src, blksize);
1188                 if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(sfd);
1189 _ragain:        lio = xread(sfd, pblk, lrem);
1190                 if (lio == 0) {
1191                         if ((do_read_loops != 0 && sfd != 0) && (loopcnt < do_read_loops)) {
1192                                 lseek(sfd, 0L, SEEK_SET);
1193                                 loopcnt++;
1194                                 goto _ragain;
1195                         }
1196
1197                         do_stop = YES;
1198                 }
1199                 if (lio != NOSIZE) ldone += lio;
1200                 else {
1201                         if (errno != EIO && catch_all_errors != YES)
1202                                 xerror(NO, NO, NO, "%s", srcfname);
1203                         switch (error_action) {
1204                                 case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", srcfname); goto _ragain; break;
1205                                 case TFC_ERRACT_SYNC:
1206                                 case TFC_ERRACT_LSYNC:
1207                                         xerror(YES, NO, NO, "%s", srcfname);
1208                                         lio = ldone = lrem = lblock;
1209                                         memset(srcblk, 0, lio);
1210                                         if (rdpos == NOFSIZE) lseek(sfd, lio, SEEK_CUR);
1211                                         else lseek(sfd, rdpos + lio, SEEK_SET);
1212                                         break;
1213                                 default: xerror(NO, NO, NO, "%s", srcfname); break;
1214                         }
1215                 }
1216                 if (lio && lio < lrem) {
1217                         pblk += lio;
1218                         lrem -= lio;
1219                         goto _ragain;
1220                 }
1221                 total_processed_src += ldone;
1222
1223                 if (do_pad && (ldone % TF_BLOCK_SIZE)) {
1224                         size_t orig = ldone;
1225                         ldone += (TF_BLOCK_SIZE - (ldone % TF_BLOCK_SIZE));
1226                         if (ldone > blksize) ldone = blksize;
1227                         memset(srcblk+orig, 0, sizeof(srcblk)-orig);
1228                 }
1229
1230                 if (do_mac == TFC_MAC_SIGN && ctr_mode < TFC_MODE_OCB)
1231                         skein_update(&sk, srcblk, ldone);
1232
1233                 if (ctr_mode == TFC_MODE_CTR) tf_ctr_crypt(key, ctr, dstblk, srcblk, ldone);
1234                 else if (ctr_mode == TFC_MODE_STREAM) tf_stream_crypt(&tfe, dstblk, srcblk, ldone);
1235                 else if (ctr_mode == TFC_MODE_XTS && do_edcrypt == TFC_DO_ENCRYPT)
1236                         tf_xts_encrypt(key, xtskey, ctr, dstblk, srcblk, ldone, xtsblocks);
1237                 else if (ctr_mode == TFC_MODE_XTS && do_edcrypt == TFC_DO_DECRYPT)
1238                         tf_xts_decrypt(key, xtskey, ctr, dstblk, srcblk, ldone, xtsblocks);
1239                 else if (ctr_mode == TFC_MODE_ECB && do_edcrypt == TFC_DO_ENCRYPT)
1240                         tf_ecb_encrypt(key, dstblk, srcblk, ldone);
1241                 else if (ctr_mode == TFC_MODE_ECB && do_edcrypt == TFC_DO_DECRYPT)
1242                         tf_ecb_decrypt(key, dstblk, srcblk, ldone);
1243                 else if (ctr_mode == TFC_MODE_CBC && do_edcrypt == TFC_DO_ENCRYPT)
1244                         tf_cbc_encrypt(key, ctr, dstblk, srcblk, ldone);
1245                 else if (ctr_mode == TFC_MODE_CBC && do_edcrypt == TFC_DO_DECRYPT)
1246                         tf_cbc_decrypt(key, ctr, dstblk, srcblk, ldone);
1247
1248                 else if (ctr_mode == TFC_MODE_OCB && do_edcrypt == TFC_DO_ENCRYPT)
1249                         tf_ocb_encrypt(key, ctr, dstblk, do_mac == TFC_MAC_SIGN ? macresult : NULL, srcblk, ldone, xtsblocks);
1250                 else if (ctr_mode == TFC_MODE_OCB && do_edcrypt == TFC_DO_DECRYPT)
1251                         tf_ocb_decrypt(key, ctr, dstblk, do_mac >= TFC_MAC_VRFY ? macresult : NULL, srcblk, ldone, xtsblocks);
1252
1253                 else if (ctr_mode == TFC_MODE_PLAIN)
1254                         memcpy(dstblk, srcblk, ldone);
1255
1256                 if (do_mac >= TFC_MAC_VRFY && ctr_mode < TFC_MODE_OCB)
1257                         skein_update(&sk, dstblk, ldone);
1258                 if (do_mac >= TFC_MAC_JUST_VRFY) goto _nowrite;
1259
1260                 pblk = dstblk;
1261                 lrem = ldone;
1262                 ldone = 0;
1263 _wagain:        lio = xwrite(dfd, pblk, lrem);
1264                 if (lio != NOSIZE) ldone += lio;
1265                 else xerror(NO, NO, NO, "%s", dstfname);
1266                 if (do_fsync && fsync(dfd) == -1) xerror(NO, NO, NO, "%s", dstfname);
1267                 if (lio < lrem) {
1268                         pblk += lio;
1269                         lrem -= lio;
1270                         goto _wagain;
1271                 }
1272                 total_written_dst += ldone;
1273 _nowrite:       total_processed_dst += ldone;
1274                 delta_processed += ldone;
1275
1276                 if (maxlen != NOFSIZE && total_processed_src >= maxlen) {
1277                         do_stop = YES;
1278                         break;
1279                 }
1280         }
1281
1282         if (verbose && status_timer && do_statline_dynamic == YES && statline_was_shown == YES) tfc_esay("\n");
1283
1284         errno = 0;
1285         if (do_mac >= TFC_MAC_VRFY) {
1286                 if (!do_mac_file) {
1287                         pblk = macvrfy;
1288                         ldone = 0;
1289                         lrem = lblock = TF_FROM_BITS(macbits);
1290                         if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(sfd);
1291 _macragain:             lio = xread(sfd, pblk, lrem);
1292                         if (lio != NOSIZE) ldone += lio;
1293                         else {
1294                                 if (errno != EIO && catch_all_errors != YES)
1295                                         xerror(NO, NO, NO, "%s", srcfname);
1296                                 switch (error_action) {
1297                                         case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", srcfname); goto _macragain; break;
1298                                         case TFC_ERRACT_SYNC:
1299                                         case TFC_ERRACT_LSYNC:
1300                                                 xerror(YES, NO, NO, "%s", srcfname);
1301                                                 lio = ldone = lrem = lblock;
1302                                                 memset(macvrfy, 0, lio);
1303                                                 if (rdpos == NOFSIZE) lseek(sfd, lio, SEEK_CUR);
1304                                                 else lseek(sfd, rdpos + lio, SEEK_SET);
1305                                                 break;
1306                                         default: xerror(NO, NO, NO, "%s", srcfname); break;
1307                                 }
1308                         }
1309                         if (lio && lio < lrem) {
1310                                 pblk += lio;
1311                                 lrem -= lio;
1312                                 goto _macragain;
1313                         }
1314                         total_processed_src += ldone;
1315                 }
1316                 else {
1317                         int mfd;
1318
1319                         if (!strcmp(do_mac_file, "-")) mfd = 0;
1320                         else mfd = xopen(do_mac_file, O_RDONLY | O_LARGEFILE);
1321                         lio = ldone = xread(mfd, tmpdata, sizeof(tmpdata));
1322                         if (lio == NOSIZE) xerror(NO, NO, YES, "%s", do_mac_file);
1323                         if (!memcmp(tmpdata, TFC_ASCII_TFC_MAC_FOURCC, TFC_ASCII_TFC_MAC_FOURCC_LEN)) {
1324                                 memmove(tmpdata, tmpdata+TFC_ASCII_TFC_MAC_FOURCC_LEN,
1325                                         sizeof(tmpdata)-TFC_ASCII_TFC_MAC_FOURCC_LEN);
1326                                 lio = TF_FROM_BITS(macbits);
1327                                 base64_decode((char *)macvrfy, lio, (char *)tmpdata, sizeof(tmpdata));
1328                         }
1329                         else memcpy(macvrfy, tmpdata, TF_FROM_BITS(macbits));
1330                         xclose(mfd);
1331                 }
1332
1333                 if (ldone < TF_FROM_BITS(macbits)) {
1334                         if (quiet == NO) tfc_esay("%s: short signature (%zu), "
1335                                 "not verifying", tfc_format_pid(progname), ldone);
1336                         exitcode = 1;
1337                         goto _shortmac;
1338                 }
1339
1340                 if (ctr_mode < TFC_MODE_OCB) skein_final(macresult, &sk);
1341                 else skein(macresult, macbits, mackey, macresult, TF_FROM_BITS(macbits));
1342
1343                 if (ctr_mode == TFC_MODE_CTR) tf_ctr_crypt(key, ctr, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1344                 else if (ctr_mode == TFC_MODE_STREAM) tf_stream_crypt(&tfe, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1345                 else if (ctr_mode == TFC_MODE_XTS) tf_xts_decrypt(key, xtskey, ctr, tmpdata, macvrfy, TF_FROM_BITS(macbits), xtsblocks);
1346                 else if (ctr_mode == TFC_MODE_ECB) tf_ecb_decrypt(key, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1347                 else if (ctr_mode == TFC_MODE_CBC) tf_cbc_decrypt(key, ctr, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1348                 else if (ctr_mode == TFC_MODE_OCB) tf_ocb_decrypt(key, ctr, tmpdata, NULL, macvrfy, TF_FROM_BITS(macbits), xtsblocks);
1349
1350                 if (!memcmp(tmpdata, macresult, TF_FROM_BITS(macbits))) {
1351                         if (quiet == NO) {
1352                                 tfc_esay("%s: signature is good", tfc_format_pid(progname));
1353                                 if (verbose) {
1354                                         if (do_outfmt == TFC_OUTFMT_B64) tfc_printbase64(stderr, macresult, TF_FROM_BITS(macbits), YES);
1355                                         else mehexdump(macresult, TF_FROM_BITS(macbits), TF_FROM_BITS(macbits), YES);
1356                                 }
1357                         }
1358                         if (do_mac == TFC_MAC_JUST_VRFY2) {
1359                                 if (verbose) tfc_esay("%s: -u: MAC signature is valid, proceeding with decrypting it again", tfc_format_pid(progname));
1360                                 maxlen = total_processed_src - SKEIN_DIGEST_SIZE;
1361                                 do_mac = TFC_MAC_DROP2;
1362                                 goto _decrypt_again_vrfy2;
1363                         }
1364                 }
1365                 else {
1366                         if (quiet == NO) {
1367                                 tfc_esay("%s: signature is BAD: "
1368                                 "wrong password, key, mode, or file is not signed", tfc_format_pid(progname));
1369                                 if (do_mac == TFC_MAC_JUST_VRFY2) tfc_esay("%s: -u: MAC signature is invalid, not decrypting it again", tfc_format_pid(progname));
1370                         }
1371                         exitcode = 1;
1372                 }
1373
1374 _shortmac:      memset(macvrfy, 0, sizeof(macvrfy));
1375                 memset(macresult, 0, sizeof(macresult));
1376                 memset(tmpdata, 0, sizeof(tmpdata));
1377         }
1378         else if (do_mac == TFC_MAC_SIGN) {
1379                 if (ctr_mode < TFC_MODE_OCB) skein_final(macresult, &sk);
1380                 else skein(macresult, macbits, mackey, macresult, TF_FROM_BITS(macbits));
1381
1382                 if (ctr_mode == TFC_MODE_CTR) tf_ctr_crypt(key, ctr, tmpdata, macresult, TF_FROM_BITS(macbits));
1383                 else if (ctr_mode == TFC_MODE_STREAM) tf_stream_crypt(&tfe, tmpdata, macresult, TF_FROM_BITS(macbits));
1384                 else if (ctr_mode == TFC_MODE_XTS) tf_xts_encrypt(key, xtskey, ctr, tmpdata, macresult, TF_FROM_BITS(macbits), xtsblocks);
1385                 else if (ctr_mode == TFC_MODE_ECB) tf_ecb_encrypt(key, tmpdata, macresult, TF_FROM_BITS(macbits));
1386                 else if (ctr_mode == TFC_MODE_CBC) tf_cbc_encrypt(key, ctr, tmpdata, macresult, TF_FROM_BITS(macbits));
1387                 else if (ctr_mode == TFC_MODE_OCB) tf_ocb_encrypt(key, ctr, tmpdata, NULL, macresult, TF_FROM_BITS(macbits), xtsblocks);
1388                 memset(macresult, 0, sizeof(macresult));
1389
1390                 if (!do_mac_file) {
1391                         pblk = tmpdata;
1392                         lio = lrem = TF_FROM_BITS(macbits);
1393                         ldone = 0;
1394 _macwagain:             lio = xwrite(dfd, pblk, lrem);
1395                         if (lio != NOSIZE) ldone += lio;
1396                         else xerror(NO, NO, NO, "%s", dstfname);
1397                         if (do_fsync && fsync(dfd) == -1) xerror(NO, NO, NO, "%s", dstfname);
1398                         if (lio < lrem) {
1399                                 pblk += lio;
1400                                 lrem -= lio;
1401                                 goto _macwagain;
1402                         }
1403                         total_written_dst += ldone;
1404                         total_processed_dst += ldone;
1405                         delta_processed += ldone;
1406                 }
1407                 else {
1408                         int mfd;
1409
1410                         if (!strcmp(do_mac_file, "-")) mfd = 1;
1411                         else mfd = xopen(do_mac_file, O_WRONLY | O_CREAT | O_LARGEFILE | write_flags);
1412                         if (do_outfmt == TFC_OUTFMT_B64) {
1413                                 memcpy(macvrfy, tmpdata, TF_FROM_BITS(macbits));
1414                                 memset(tmpdata, 0, TFC_TMPSIZE);
1415                                 memcpy(tmpdata, TFC_ASCII_TFC_MAC_FOURCC, TFC_ASCII_TFC_MAC_FOURCC_LEN);
1416                                 base64_encode((char *)tmpdata+TFC_ASCII_TFC_MAC_FOURCC_LEN, (char *)macvrfy, TF_FROM_BITS(macbits));
1417                                 lrem = strnlen((char *)tmpdata, sizeof(tmpdata));
1418                                 if (lrem) {
1419                                         tmpdata[lrem] = '\n';
1420                                         lrem++;
1421                                 }
1422                                 lio = xwrite(mfd, tmpdata, lrem);
1423                         }
1424                         else lio = xwrite(mfd, tmpdata, TF_FROM_BITS(macbits));
1425                         if (lio == NOSIZE) xerror(NO, NO, YES, "%s", do_mac_file);
1426                         if (do_fsync && fsync(mfd) == -1) xerror(NO, NO, YES, "%s", do_mac_file);
1427                         xclose(mfd);
1428                 }
1429
1430                 memset(macvrfy, 0, sizeof(macvrfy));
1431                 memset(macresult, 0, sizeof(macresult));
1432                 memset(tmpdata, 0, sizeof(tmpdata));
1433         }
1434         else if (do_mac == TFC_MAC_DROP2) total_processed_src += SKEIN_DIGEST_SIZE;
1435
1436         if (verbose || status_timer || (do_stop == YES && quiet == NO)) print_crypt_status(0);
1437
1438         xexit(exitcode);
1439         return -1;
1440 }