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 static tfc_yesno unbuffered;
  34
  35 static void open_log(const char *logfile)
  36 {
  37         int fd;
  38         tfc_yesno ro;
  39
  40         if (!strcmp(logfile, "-")) return;
  41
  42         ro = read_only;
  43         read_only = NO;
  44         fd = xopen(logfile, O_WRONLY | O_CREAT | O_LARGEFILE | O_TRUNC);
  45         read_only = ro;
  46         xclose(2);
  47         if (dup2(fd, 2) == -1) xexit(2);
  48         xclose(fd);
  49         do_statline_dynamic = NO;
  50 }
  51
  52 static int getps_filter(struct getpasswd_state *getps, char chr, size_t pos)
  53 {
  54         if (chr == '\x03') {
  55                 getps->retn = ((size_t)-2);
  56                 return 6;
  57         }
  58         return 1;
  59 }
  60
  61 static int getps_hex_filter(struct getpasswd_state *getps, char chr, size_t pos)
  62 {
  63         if (chr == '\x03') {
  64                 getps->retn = ((size_t)-2);
  65                 return 6;
  66         }
  67         if (chr >= '0' && chr <= '9') return 1;
  68         if (chr >= 'a' && chr <= 'f') return 1;
  69         if (chr >= 'A' && chr <= 'F') return 1;
  70         if (chr == '\x7f' || chr == '\x08'
  71         || chr == '\x15' || chr == '\x17') return 1;
  72         return 0;
  73 }
  74
  75 static inline int isctrlchr(int c)
  76 {
  77         if (c == 9) return 0;
  78         if (c >= 0 && c <= 31) return 1;
  79         if (c == 127) return 1;
  80         return 0;
  81 }
  82
  83 static int getps_plain_filter(struct getpasswd_state *getps, char chr, size_t pos)
  84 {
  85         int x;
  86
  87         x = getps_filter(getps, chr, pos);
  88         if (x != 1) return x;
  89
  90         if (pos < getps->pwlen && !isctrlchr(chr))
  91                 write(getps->efd, &chr, sizeof(char));
  92         return 1;
  93 }
  94
  95 static int getps_plain_hex_filter(struct getpasswd_state *getps, char chr, size_t pos)
  96 {
  97         int x;
  98
  99         x = getps_hex_filter(getps, chr, pos);
 100         if (x != 1) return x;
 101
 102         if (pos < getps->pwlen && !isctrlchr(chr))
 103                 write(getps->efd, &chr, sizeof(char));
 104         return 1;
 105 }
 106
 107 static void make_hint(void *hint, size_t szhint, const void *data, size_t szdata)
 108 {
 109         char t[TF_FROM_BITS(TF_MAX_BITS)];
 110
 111         skein(t, TF_MAX_BITS, NULL, data, szdata);
 112         xor_shrink(hint, szhint, t, sizeof(t));
 113         memset(t, 0, sizeof(t));
 114 }
 115
 116 static void raw_say_hint(void *hint, size_t szhint, const void *data, size_t szdata, const char *prompt)
 117 {
 118         make_hint(hint, szhint, data, szdata);
 119         if (prompt) tfc_nfsay(stderr, "%s: ", prompt);
 120         mehexdump(hint, szhint, szhint, 1);
 121         memset(hint, 0, szhint);
 122 }
 123
 124 static void say_hint(const void *data, size_t szdata, const char *prompt)
 125 {
 126         char t[TF_SIZE_UNIT];
 127         raw_say_hint(t, TF_SIZE_UNIT, data, szdata, prompt);
 128         /* t[] is erased (automatically) */
 129 }
 130
 131 int main(int argc, char **argv)
 132 {
 133         int c;
 134         double td;
 135         char *s, *d, *t, *stoi;
 136         size_t x, n;
 137
 138         progpid = getpid();
 139         progname = basename(argv[0]);
 140
 141         if (!isatty(2)) do_statline_dynamic = NO;
 142
 143         s = (char *)srcblk;
 144         d = getenv("HOME");
 145         if (!d) d = "";
 146         n = PATH_MAX > sizeof(srcblk) ? sizeof(srcblk) : PATH_MAX;
 147         if (xstrlcpy(s, d, n) >= n) goto _baddfname;
 148         if (xstrlcat(s, "/.tfcrypt.defs", n) >= n) goto _baddfname;
 149         read_defaults(s, YES);
 150 _baddfname:
 151         memset(s, 0, n);
 152
 153         if (!strcmp(progname, "iotool")) {
 154                 do_edcrypt = TFC_DO_PLAIN;
 155                 password = YES;
 156                 ctr_mode = TFC_MODE_PLAIN;
 157         }
 158
 159         opterr = 0;
 160         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) {
 161                 switch (c) {
 162                         case 'L':
 163                                 read_defaults(optarg, NO);
 164                                 break;
 165                         case 's':
 166                                 saltf = optarg;
 167                                 break;
 168                         case 'r':
 169                                 randsource = optarg;
 170                                 break;
 171                         case 'c':
 172                                 if (!strcasecmp(optarg, "show"))
 173                                         counter_opt = TFC_CTR_SHOW;
 174                                 else if (!strcasecmp(optarg, "head"))
 175                                         counter_opt = TFC_CTR_HEAD;
 176                                 else if (!strcasecmp(optarg, "rand"))
 177                                         counter_opt = TFC_CTR_RAND;
 178                                 else if (!strcasecmp(optarg, "zero"))
 179                                         counter_opt = TFC_CTR_ZERO;
 180                                 else if (strchr(optarg, ':')) {
 181                                         char *ss, chr;
 182
 183                                         counter_opt = TFC_CTR_SSET;
 184                                         n = sizeof(ctr);
 185
 186                                         s = d = optarg; t = NULL;
 187                                         while ((s = strtok_r(d, ",", &t))) {
 188                                                 if (d) d = NULL;
 189
 190                                                 if (n == 0) break;
 191                                                 ss = strchr(s, ':');
 192                                                 if (!ss) continue;
 193                                                 *ss = 0; ss++;
 194                                                 chr = (char)strtoul(s, &stoi, 16);
 195                                                 if (!str_empty(stoi)) continue;
 196                                                 x = (size_t)strtoul(ss, &stoi, 10);
 197                                                 if (!str_empty(stoi)) continue;
 198                                                 if (x > n) x = n;
 199                                                 memset(ctr+(sizeof(ctr)-n), (int)chr, x);
 200                                                 n -= x;
 201                                         }
 202                                 }
 203                                 else counter_file = sksum_hashlist_file = optarg;
 204                                 break;
 205                         case 'C':
 206                                 if (!strcasecmp(optarg, "ctr"))
 207                                         ctr_mode = TFC_MODE_CTR;
 208                                 else if (!strcasecmp(optarg, "stream"))
 209                                         ctr_mode = TFC_MODE_STREAM;
 210                                 else if (!strcasecmp(optarg, "cbc"))
 211                                         ctr_mode = TFC_MODE_CBC;
 212                                 else if (!strcasecmp(optarg, "pcbc"))
 213                                         ctr_mode = TFC_MODE_PCBC;
 214                                 else if (!strcasecmp(optarg, "ecb"))
 215                                         ctr_mode = TFC_MODE_ECB;
 216                                 else if (!strcasecmp(optarg, "xts"))
 217                                         ctr_mode = TFC_MODE_XTS;
 218                                 else xerror(NO, YES, YES, "%s: invalid mode of operation", optarg);
 219                                 break;
 220                         case 'P':
 221                                 do_edcrypt = TFC_DO_PLAIN;
 222                                 password = YES;
 223                                 ctr_mode = TFC_MODE_PLAIN;
 224                                 break;
 225                         case 'e':
 226                                 if (do_edcrypt != TFC_DO_PLAIN) do_edcrypt = TFC_DO_ENCRYPT;
 227                                 break;
 228                         case 'd':
 229                                 if (do_edcrypt != TFC_DO_PLAIN) do_edcrypt = TFC_DO_DECRYPT;
 230                                 break;
 231                         case 'D':
 232                                 macbits = strtoul(optarg, &stoi, 10);
 233                                 if (macbits == 0 || !str_empty(stoi) || macbits < 8
 234                                 || macbits > TF_MAX_BITS || macbits % 8)
 235                                         xerror(NO, YES, YES, "%s: invalid MAC bits setting", optarg);
 236                                 break;
 237                         case 'n':
 238                                 nr_turns = sksum_turns = strtoul(optarg, &stoi, 10);
 239                                 if (!str_empty(stoi)) xerror(NO, YES, YES, "%s: invalid number of turns", optarg);
 240                                 break;
 241                         case 'U':
 242                                 if (!strcasecmp(optarg, "key"))
 243                                         mackey_opt = TFC_MACKEY_RAWKEY;
 244                                 else if (!strcasecmp(optarg, "pwd"))
 245                                         mackey_opt = TFC_MACKEY_PASSWORD;
 246                                 else {
 247                                         mackey_opt = TFC_MACKEY_FILE;
 248                                         mackeyf = optarg;
 249                                 }
 250                                 break;
 251                         case 'p':
 252                                 password = YES;
 253                                 break;
 254                         case 'k':
 255                                 rawkey = TFC_RAWKEY_KEYFILE;
 256                                 break;
 257                         case 'z':
 258                                 rawkey = TFC_RAWKEY_ASKSTR;
 259                                 break;
 260                         case 'x':
 261                                 rawkey = TFC_RAWKEY_ASKHEX;
 262                                 break;
 263                         case 'K':
 264                                 verbose = YES;
 265                                 genkeyf = optarg;
 266                                 break;
 267                         case 't':
 268                                 tweakf = optarg;
 269                                 do_full_key = NO;
 270                                 break;
 271                         case 'l':
 272                                 if (maxlen != NOFSIZE) break;
 273
 274                                 maxlen = tfc_humanfsize(optarg, &stoi);
 275                                 if (!str_empty(stoi)) {
 276                                         maxlen = tfc_fnamesize(optarg, YES);
 277                                         maxlen = tfc_modifysize(maxlen, strchr(optarg, ':'));
 278                                         if (maxlen == NOFSIZE) xerror(NO, YES, YES,
 279                                         "%s: invalid count value", optarg);
 280                                 }
 281                                 else maxlen = tfc_modifysize(maxlen, strchr(optarg, ':'));
 282                                 if (counter_opt == TFC_CTR_HEAD)
 283                                         maxlen += TF_BLOCK_SIZE;
 284                                 break;
 285                         case 'w':
 286                                 overwrite_source = YES;
 287                                 break;
 288                         case 'E':
 289                                 if (!strcmp(optarg, "xall")) {
 290                                         catch_all_errors = YES;
 291                                         break;
 292                                 }
 293                                 if (!strcmp(optarg, "xseek")) {
 294                                         ignore_seek_errors = YES;
 295                                         break;
 296                                 }
 297                                 if (!strcmp(optarg, "exit"))
 298                                         error_action = TFC_ERRACT_EXIT;
 299                                 else if (!strncmp(optarg, "cont", 4))
 300                                         error_action = TFC_ERRACT_CONT;
 301                                 else if (!strcmp(optarg, "sync"))
 302                                         error_action = TFC_ERRACT_SYNC;
 303                                 else if (!strcmp(optarg, "lsync"))
 304                                         error_action = TFC_ERRACT_LSYNC;
 305                                 else xerror(NO, YES, YES, "invalid error action %s specified", optarg);
 306                                 break;
 307                         case 'o':
 308                                 open_log(optarg);
 309                                 break;
 310                         case 'O':
 311                                 s = d = optarg; t = NULL;
 312                                 while ((s = strtok_r(d, ",", &t))) {
 313                                         if (d) d = NULL;
 314                                         if (!strcmp(s, "sync"))
 315                                                 write_flags |= O_SYNC;
 316                                         else if (!strcmp(s, "trunc"))
 317                                                 write_flags |= O_TRUNC;
 318                                         else if (!strcmp(s, "append"))
 319                                                 write_flags |= O_APPEND;
 320                                         else if (!strcmp(s, "fsync"))
 321                                                 do_fsync = YES;
 322                                         else if (!strcmp(s, "pad"))
 323                                                 do_pad = YES;
 324                                         else if (!strcmp(s, "ro"))
 325                                                 read_only = YES;
 326                                         else if (!strcmp(s, "rw"))
 327                                                 read_only = NO;
 328                                         else if (!strcmp(s, "xtime"))
 329                                                 do_preserve_time = YES;
 330                                         else if (!strcmp(s, "gibsize"))
 331                                                 do_stats_in_gibs = YES;
 332                                         else if (!strcmp(s, "plainstats"))
 333                                                 do_statline_dynamic = NO;
 334                                         else if (!strcmp(s, "statless"))
 335                                                 do_less_stats = YES;
 336                                         else if (!strcmp(s, "norepeat"))
 337                                                 no_repeat = YES;
 338                                         else if (!strncmp(s, "prompt", 6) && *(s+6) == '=')
 339                                                 pw_prompt = s+7;
 340                                         else if (!strncmp(s, "macprompt", 9) && *(s+9) == '=')
 341                                                 mac_pw_prompt = s+10;
 342                                         else if (!strcmp(s, "shorthex"))
 343                                                 do_full_hexdump = NO;
 344                                         else if (!strcmp(s, "fullkey"))
 345                                                 do_full_key = YES;
 346                                         else if (!strcmp(s, "showsecrets"))
 347                                                 show_secrets = YES;
 348                                         else if (!strcmp(s, "finished"))
 349                                                 show_when_done = YES;
 350                                         else if (!strcmp(s, "pid"))
 351                                                 show_pid = YES;
 352                                         else if (!strcmp(s, "nobuf")) {
 353                                                 if (!tfc_is_freestream(ctr_mode)) xerror(NO, YES, YES,
 354                                                         "cannot activate unbuffered mode for non-stream cipher mode %s!",
 355                                                         tfc_modename(ctr_mode));
 356                                                 else unbuffered = YES;
 357                                         }
 358                                         else if (!strncmp(s, "readloops", 9) && *(s+9) == '=') {
 359                                                 do_read_loops = tfc_humanfsize(s+10, &stoi);
 360                                                 if (!str_empty(stoi)) do_read_loops = NOSIZE;
 361                                         }
 362                                         else if (!strncmp(s, "logfile", 7) && *(s+7) == '=')
 363                                                 open_log(s+8);
 364                                         else if (!strncmp(s, "iobs", 4) && *(s+4) == '=') {
 365                                                 s += 5;
 366                                                 blksize = (size_t)tfc_humanfsize(s, &stoi);
 367                                                 if (!str_empty(stoi)) {
 368                                                         blksize = (size_t)tfc_fnamesize(s, YES);
 369                                                         blksize = (size_t)tfc_modifysize((tfc_fsize)blksize, strchr(s, ':'));
 370                                                         if (blksize == NOSIZE) xerror(NO, YES, YES,
 371                                                         "%s: invalid block size value", s);
 372                                                 }
 373                                                 else blksize = (size_t)tfc_modifysize((tfc_fsize)blksize, strchr(s, ':'));
 374                                                 if (!tfc_is_freestream(ctr_mode) && blksize < TF_BLOCK_SIZE) xerror(NO, YES, YES,
 375                                                         "%s: block size is lesser than TF_BLOCK_SIZE (%u bytes)", s, TFC_U(TF_BLOCK_SIZE));
 376                                                 if (blksize > TFC_BLKSIZE) xerror(NO, YES, YES,
 377                                                         "%s: block size exceeds %u bytes",
 378                                                         s, TFC_U(TFC_BLKSIZE));
 379                                         }
 380                                         else if (!strncmp(s, "xtsblocks", 9) && *(s+9) == '=') {
 381                                                 s += 10;
 382                                                 xtsblocks = (size_t)tfc_humanfsize(s, &stoi);
 383                                                 if (!str_empty(stoi)) {
 384                                                         xtsblocks = (size_t)tfc_fnamesize(s, YES);
 385                                                         xtsblocks = (size_t)tfc_modifysize((tfc_fsize)xtsblocks, strchr(s, ':'));
 386                                                         if (xtsblocks == NOSIZE) xerror(NO, YES, YES,
 387                                                         "%s: invalid blocks per xts block value", s);
 388                                                 }
 389                                                 else xtsblocks = (size_t)tfc_modifysize((tfc_fsize)xtsblocks, strchr(s, ':'));
 390                                                 if (TFC_BLKSIZE % xtsblocks) xerror(NO, YES, YES,
 391                                                         "%s: nr of blocks per xts block is not round to %u bytes",
 392                                                         s, TFC_U(TFC_BLKSIZE));
 393                                                 if ((xtsblocks * TF_BLOCK_SIZE) > TFC_BLKSIZE) xerror(NO, YES, YES,
 394                                                         "%s: nr of blocks per xts block exceeds %u bytes",
 395                                                         s, TFC_U(TFC_BLKSIZE));
 396                                         }
 397                                         else if (!strncmp(s, "iseek", 5) && *(s+5) == '=') {
 398                                                 s += 6;
 399                                                 iseek = tfc_humanfsize(s, &stoi);
 400                                                 if (!str_empty(stoi)) {
 401                                                         iseek = tfc_fnamesize(s, YES);
 402                                                         iseek = tfc_modifysize(iseek, strchr(s, ':'));
 403                                                         if (iseek == NOFSIZE) xerror(NO, YES, YES,
 404                                                         "%s: invalid iseek value", s);
 405                                                 }
 406                                                 else iseek = tfc_modifysize(iseek, strchr(s, ':'));
 407                                                 if (ctr_mode != TFC_MODE_PLAIN && iseek % TF_BLOCK_SIZE)
 408                                                         xerror(NO, YES, YES,
 409                                                                 "%s: not round to TF block size "
 410                                                                 "of %u bytes",
 411                                                                 s, TFC_U(TF_BLOCK_SIZE));
 412                                                 iseek_blocks = iseek / TF_BLOCK_SIZE;
 413                                         }
 414                                         else if (!strncmp(s, "ixseek", 6) && *(s+6) == '=') {
 415                                                 s += 7;
 416                                                 iseek = tfc_humanfsize(s, &stoi);
 417                                                 if (!str_empty(stoi)) {
 418                                                         iseek = tfc_fnamesize(s, YES);
 419                                                         iseek = tfc_modifysize(iseek, strchr(s, ':'));
 420                                                         if (iseek == NOFSIZE) xerror(NO, YES, YES,
 421                                                                 "%s: invalid ixseek value", s);
 422                                                 }
 423                                                 else iseek = tfc_modifysize(iseek, strchr(s, ':'));
 424                                         }
 425                                         else if (!strncmp(s, "ictr", 4) && *(s+4) == '=') {
 426                                                 s += 5;
 427                                                 iseek_blocks = tfc_humanfsize(s, &stoi);
 428                                                 if (!str_empty(stoi)) {
 429                                                         iseek_blocks = tfc_fnamesize(s, YES);
 430                                                         if (iseek_blocks == NOFSIZE)
 431                                                                 xerror(NO, YES, YES,
 432                                                                 "%s: invalid ictr value", s);
 433                                                         iseek_blocks /= TF_BLOCK_SIZE;
 434                                                         iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 435                                                 }
 436                                                 else iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 437                                         }
 438                                         else if (!strncmp(s, "ixctr", 5) && *(s+5) == '=') {
 439                                                 s += 6;
 440                                                 iseek_blocks = tfc_humanfsize(s, &stoi);
 441                                                 if (!str_empty(stoi)) {
 442                                                         iseek_blocks = tfc_fnamesize(s, YES);
 443                                                         iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 444                                                         if (iseek_blocks == NOFSIZE)
 445                                                                 xerror(NO, YES, YES,
 446                                                                 "%s: invalid ixctr value", s);
 447                                                 }
 448                                                 else iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 449                                                 if (iseek_blocks % TF_BLOCK_SIZE)
 450                                                         xerror(NO, YES, YES,
 451                                                         "%s: not round to TF block size "
 452                                                         "of %u bytes", s, TFC_U(TF_BLOCK_SIZE));
 453                                                 iseek_blocks /= TF_BLOCK_SIZE;
 454                                         }
 455                                         else if (!strncmp(s, "oseek", 5) && *(s+5) == '=') {
 456                                                 s += 6;
 457                                                 oseek = tfc_humanfsize(s, &stoi);
 458                                                 if (!str_empty(stoi)) {
 459                                                         oseek = tfc_fnamesize(s, YES);
 460                                                         oseek = tfc_modifysize(oseek, strchr(s, ':'));
 461                                                         if (oseek == NOFSIZE) xerror(NO, YES, YES,
 462                                                         "%s: invalid oseek value", s);
 463                                                 }
 464                                                 else oseek = tfc_modifysize(oseek, strchr(s, ':'));
 465                                         }
 466                                         else if (!strncmp(s, "ioseek", 6) && *(s+6) == '=') {
 467                                                 s += 7;
 468
 469                                                 iseek = tfc_humanfsize(s, &stoi);
 470                                                 if (!str_empty(stoi)) {
 471                                                         iseek = tfc_fnamesize(s, YES);
 472                                                         iseek = tfc_modifysize(iseek, strchr(s, ':'));
 473                                                         if (iseek == NOFSIZE) xerror(NO, YES, YES,
 474                                                         "%s: invalid iseek value", s);
 475                                                 }
 476                                                 else iseek = tfc_modifysize(iseek, strchr(s, ':'));
 477                                                 if (ctr_mode != TFC_MODE_PLAIN && iseek % TF_BLOCK_SIZE)
 478                                                         xerror(NO, YES, YES,
 479                                                                 "%s: not round to TF block size "
 480                                                                 "of %u bytes",
 481                                                                 s, TFC_U(TF_BLOCK_SIZE));
 482                                                 iseek_blocks = iseek / TF_BLOCK_SIZE;
 483
 484                                                 oseek = tfc_humanfsize(s, &stoi);
 485                                                 if (!str_empty(stoi)) {
 486                                                         oseek = tfc_fnamesize(s, YES);
 487                                                         oseek = tfc_modifysize(oseek, strchr(s, ':'));
 488                                                         if (oseek == NOFSIZE) xerror(NO, YES, YES,
 489                                                         "%s: invalid oseek value", s);
 490                                                 }
 491                                                 else oseek = tfc_modifysize(oseek, strchr(s, ':'));
 492                                         }
 493                                         else if (!strncmp(s, "count", 5) && *(s+5) == '=') {
 494                                                 s += 6;
 495                                                 maxlen = tfc_humanfsize(s, &stoi);
 496                                                 if (!str_empty(stoi)) {
 497                                                         maxlen = tfc_fnamesize(s, YES);
 498                                                         maxlen = tfc_modifysize(maxlen, strchr(s, ':'));
 499                                                         if (maxlen == NOFSIZE) xerror(NO, YES, YES,
 500                                                         "%s: invalid count value", s);
 501                                                 }
 502                                                 else maxlen = tfc_modifysize(maxlen, strchr(s, ':'));
 503                                                 if (counter_opt == TFC_CTR_HEAD)
 504                                                         maxlen += TF_BLOCK_SIZE;
 505                                         }
 506                                         else if (!strncmp(s, "ftrunc", 6) && *(s+6) == '=') {
 507                                                 s += 7;
 508                                                 if (!strcmp(s, "tail")) {
 509                                                         do_ftrunc = TFC_FTRUNC_TAIL;
 510                                                         ftrunc_dfd = NOFSIZE;
 511                                                 }
 512                                                 else {
 513                                                         do_ftrunc = TFC_DO_FTRUNC;
 514                                                         ftrunc_dfd = tfc_humanfsize(s, &stoi);
 515                                                         if (!str_empty(stoi)) {
 516                                                                 ftrunc_dfd = tfc_fnamesize(s, YES);
 517                                                                 ftrunc_dfd = tfc_modifysize(ftrunc_dfd, strchr(s, ':'));
 518                                                                 if (ftrunc_dfd == NOFSIZE) xerror(NO, YES, YES,
 519                                                                 "%s: invalid ftrunc value", s);
 520                                                         }
 521                                                         else ftrunc_dfd = tfc_modifysize(ftrunc_dfd, strchr(s, ':'));
 522                                                 }
 523                                         }
 524                                         else if (!strncmp(s, "xkey", 4) && *(s+4) == '=') {
 525                                                 s += 5;
 526                                                 maxkeylen = tfc_humanfsize(s, &stoi);
 527                                                 if (!str_empty(stoi)) {
 528                                                         maxkeylen = tfc_fnamesize(s, YES);
 529                                                         maxkeylen = tfc_modifysize(maxkeylen, strchr(s, ':'));
 530                                                         if (maxkeylen == NOSIZE)
 531                                                                 xerror(NO, YES, YES,
 532                                                                 "%s: invalid key length value", s);
 533                                                 }
 534                                                 else maxkeylen = tfc_modifysize(maxkeylen, strchr(s, ':'));
 535                                         }
 536                                         else if (!strncmp(s, "okey", 4) && *(s+4) == '=') {
 537                                                 s += 5;
 538                                                 keyoffset = tfc_humanfsize(s, &stoi);
 539                                                 if (!str_empty(stoi)) {
 540                                                         keyoffset = tfc_fnamesize(s, YES);
 541                                                         keyoffset = tfc_modifysize(keyoffset, strchr(s, ':'));
 542                                                         if (keyoffset == NOFSIZE)
 543                                                                 xerror(NO, YES, YES,
 544                                                                 "%s: invalid key offset value", s);
 545                                                 }
 546                                                 else keyoffset = tfc_modifysize(keyoffset, strchr(s, ':'));
 547                                         }
 548                                         else if (!strncmp(s, "xctr", 4) && *(s+4) == '=') {
 549                                                 s += 5;
 550                                                 ctrsz = tfc_humanfsize(s, &stoi);
 551                                                 if (!str_empty(stoi)) {
 552                                                         ctrsz = (size_t)tfc_fnamesize(s, YES);
 553                                                         ctrsz = (size_t)tfc_modifysize((tfc_fsize)ctrsz, strchr(s, ':'));
 554                                                         if (ctrsz == NOSIZE)
 555                                                                 xerror(NO, YES, YES,
 556                                                                 "%s: invalid counter length value", s);
 557                                                 }
 558                                                 else ctrsz = (size_t)tfc_modifysize((tfc_fsize)ctrsz, strchr(s, ':'));
 559                                                 if (ctrsz > TF_BLOCK_SIZE)
 560                                                         xerror(NO, YES, YES, "%s: counter size cannot exceed TF block size", s);
 561                                         }
 562                                         else xerror(NO, YES, YES, "invalid option %s", s);
 563                                 }
 564                                 break;
 565                         case 'S':
 566                                 do_mac = TFC_MAC_SIGN;
 567                                 if (strcasecmp(optarg, "mac") != 0)
 568                                         do_mac_file = optarg;
 569                                 break;
 570                         case 'M':
 571                                 do_mac = TFC_MAC_VRFY;
 572                                 if (!strcasecmp(optarg, "drop"))
 573                                         do_mac = TFC_MAC_DROP;
 574                                 else if (strcasecmp(optarg, "mac") != 0)
 575                                         do_mac_file = optarg;
 576                                 break;
 577                         case 'm':
 578                         case 'u':
 579                                 if (do_mac != TFC_MAC_VRFY)
 580                                         xerror(NO, YES, YES, "signature source was not specified");
 581                                 do_mac = TFC_MAC_JUST_VRFY;
 582                                 if (c == 'u') do_mac = TFC_MAC_JUST_VRFY2;
 583                                 break;
 584                         case 'R':
 585                         case 'Z':
 586                                 if (maxlen != NOFSIZE) {
 587                                         if (c == 'Z') genzero_nr_bytes = maxlen;
 588                                         else genrandom_nr_bytes = maxlen;
 589                                 }
 590                                 else {
 591                                         tfc_fsize t;
 592                                         if (!strcasecmp(optarg, "cbs"))
 593                                                 t = TF_BLOCK_SIZE;
 594                                         else if (!strcasecmp(optarg, "ks"))
 595                                                 t = TF_FROM_BITS(TFC_KEY_BITS);
 596                                         else if (!strcasecmp(optarg, "xks"))
 597                                                 t = TF_FROM_BITS(TFC_KEY_BITS) * 2;
 598                                         else if (!strcasecmp(optarg, "iobs"))
 599                                                 t = blksize;
 600                                         else {
 601                                                 t = tfc_humanfsize(optarg, &stoi);
 602                                                 if (!str_empty(stoi)) {
 603                                                         t = tfc_fnamesize(optarg, NO);
 604                                                         t = tfc_modifysize(t, strchr(optarg, ':'));
 605                                                 }
 606                                                 else t = tfc_modifysize(t, strchr(optarg, ':'));
 607                                         }
 608                                         if (c == 'Z') genzero_nr_bytes = maxlen = t;
 609                                         else genrandom_nr_bytes = maxlen = t;
 610                                 }
 611                                 break;
 612                         case 'a':
 613                                 do_preserve_time = YES;
 614                                 break;
 615                         case 'A':
 616                                 do_outfmt = TFC_OUTFMT_B64;
 617                                 break;
 618                         case 'W':
 619                                 do_outfmt = TFC_OUTFMT_RAW;
 620                                 break;
 621                         case 'H':
 622                                 do_outfmt = TFC_OUTFMT_HEX;
 623                                 break;
 624                         case 'q':
 625                                 quiet = YES;
 626                                 xexit_no_nl = YES;
 627                                 verbose = NO;
 628                                 do_full_hexdump = NO;
 629                                 status_timer = 0;
 630                                 break;
 631                         case 'v':
 632                                 verbose = YES;
 633                                 break;
 634                         case 'V':
 635                                 td = strtod(optarg, &stoi);
 636                                 status_timer = TFC_DTOUSECS(td);
 637                                 if (status_timer <= TFC_DTOUSECS(0) || !str_empty(stoi)) status_timer = 0;
 638                                 break;
 639                         default:
 640                                 usage();
 641                                 break;
 642                 }
 643         }
 644
 645         if (!strcmp(progname, "tfbench")) {
 646                 if (!*(argv+optind)) usage();
 647
 648                 td = strtod(*(argv+optind), &stoi);
 649                 if (td <= TFC_DTOUSECS(0) || !str_empty(stoi))
 650                         xerror(NO, YES, YES,
 651                         "%s: invalid benchmark time in seconds", *(argv+optind));
 652                 bench_timer = TFC_DTOUSECS(td);
 653                 do_benchmark(bench_timer, td);
 654         }
 655         if (genrandom_nr_bytes) {
 656                 ctr_mode = TFC_MODE_STREAM;
 657                 do_edcrypt = TFC_DO_ENCRYPT;
 658                 gen_write_bytes(*(argv+optind), oseek, genrandom_nr_bytes);
 659         }
 660         if (genzero_nr_bytes) {
 661                 ctr_mode = TFC_MODE_PLAIN;
 662                 do_edcrypt = TFC_DO_PLAIN;
 663                 gen_write_bytes(*(argv+optind), oseek, genzero_nr_bytes);
 664         }
 665
 666         if (rawkey && password)
 667                 xerror(NO, YES, YES, "Cannot use rawkey and hashing password!");
 668         if (do_edcrypt == TFC_DO_ENCRYPT && do_mac >= TFC_MAC_VRFY)
 669                 xerror(NO, YES, YES, "Cannot encrypt and verify signature!");
 670         if (do_edcrypt == TFC_DO_DECRYPT && do_mac == TFC_MAC_SIGN)
 671                 xerror(NO, YES, YES, "Cannot decrypt and calculate signature!");
 672         if (do_edcrypt == TFC_DO_DECRYPT && counter_opt == TFC_CTR_RAND)
 673                 xerror(NO, YES, YES, "Cannot decrypt and embed a generated CTR into file!");
 674         if (do_edcrypt == TFC_DO_ENCRYPT && counter_opt == TFC_CTR_HEAD)
 675                 xerror(NO, YES, YES, "Cannot encrypt and read CTR from source!");
 676         if (overwrite_source && counter_opt == TFC_CTR_RAND)
 677                 xerror(NO, YES, YES, "Cannot embed a CTR into file when overwriting it!");
 678         if (ctr_mode == TFC_MODE_PLAIN
 679         && (do_edcrypt || do_mac || rawkey
 680         || mackey_opt || counter_opt || counter_file))
 681                 xerror(NO, YES, YES, "Encryption facility is disabled when in plain IO mode.");
 682
 683         errno = 0;
 684         do_stop = NO;
 685
 686         if (saltf) {
 687                 int saltfd;
 688
 689                 memset(tfc_salt, 0, TFC_MAX_SALT);
 690                 tfc_saltsz = 0;
 691                 if (!strcasecmp(saltf, "disable")) goto _nosalt;
 692
 693                 if (!strcmp(saltf, "-")) saltfd = 0;
 694                 else saltfd = xopen(saltf, O_RDONLY | O_LARGEFILE);
 695                 lio = xread(saltfd, tfc_salt, TFC_MAX_SALT - TF_FROM_BITS(TFC_KEY_BITS));
 696                 if (lio == NOSIZE) xerror(NO, NO, YES, "%s", saltf);
 697                 tfc_saltsz = lio;
 698                 xclose(saltfd);
 699         }
 700
 701 _nosalt:
 702         if (mackey_opt == TFC_MACKEY_FILE && mackeyf) {
 703                 int mkfd = -1;
 704                 tfc_yesno do_stop;
 705
 706                 if (!strcmp(mackeyf, "-")) mkfd = 0;
 707                 else mkfd = xopen(mackeyf, O_RDONLY | O_LARGEFILE);
 708
 709                 skein_init(&sk, TFC_KEY_BITS);
 710
 711                 do_stop = NO;
 712                 while (1) {
 713                         if (do_stop) break;
 714                         pblk = tmpdata;
 715                         ldone = 0;
 716                         lrem = lblock = sizeof(tmpdata);
 717                         if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(mkfd);
 718 _mkragain:              lio = xread(mkfd, pblk, lrem);
 719                         if (lio == 0 && do_stop == NO) do_stop = YES;
 720                         if (lio != NOSIZE) ldone += lio;
 721                         else {
 722                                 if (errno != EIO && catch_all_errors != YES)
 723                                         xerror(NO, NO, NO, "%s", mackeyf);
 724                                 switch (error_action) {
 725                                         case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", mackeyf); goto _mkragain; break;
 726                                         case TFC_ERRACT_SYNC:
 727                                         case TFC_ERRACT_LSYNC:
 728                                                 xerror(YES, NO, NO, "%s", mackeyf);
 729                                                 lio = ldone = lrem = lblock;
 730                                                 memset(tmpdata, 0, lio);
 731                                                 if (rdpos == NOFSIZE) lseek(mkfd, lio, SEEK_CUR);
 732                                                 else lseek(mkfd, rdpos + lio, SEEK_SET);
 733                                                 break;
 734                                         default: xerror(NO, NO, NO, "%s", mackeyf); break;
 735                                 }
 736                         }
 737                         if (lio && lio < lrem) {
 738                                 pblk += lio;
 739                                 lrem -= lio;
 740                                 goto _mkragain;
 741                         }
 742
 743                         skein_update(&sk, tmpdata, ldone);
 744                 }
 745
 746                 skein_final(mackey, &sk);
 747
 748                 xclose(mkfd);
 749         }
 750         else if (mackey_opt == TFC_MACKEY_PASSWORD) {
 751                 memset(&getps, 0, sizeof(struct getpasswd_state));
 752                 getps.fd = getps.efd = -1;
 753                 getps.passwd = pwdask;
 754                 getps.pwlen = sizeof(pwdask)-1;
 755                 getps.echo = mac_pw_prompt ? mac_pw_prompt : "Enter MAC password: ";
 756                 getps.charfilter = (show_secrets == YES) ? getps_plain_filter : getps_filter;
 757                 getps.maskchar = (show_secrets == YES) ? 0 : 'x';
 758                 getps.flags = GETP_WAITFILL;
 759                 n = xgetpasswd(&getps);
 760                 if (n == NOSIZE) xerror(NO, NO, YES, "getting MAC password");
 761                 if (n == ((size_t)-2)) xexit(1);
 762                 if (verbose) say_hint(pwdask, n, "MAC password hint");
 763                 skein(mackey, TF_MAX_BITS, NULL, pwdask, n);
 764         }
 765
 766
 767         if ((strlen(progname) <= 9)
 768         && ((!strcmp(progname, "sksum"))
 769         || ((!memcmp(progname, "sk", 2))
 770         && (!memcmp(progname+3, "sum", 3)
 771         || !memcmp(progname+4, "sum", 3)
 772         || !memcmp(progname+5, "sum", 3)
 773         || !memcmp(progname+6, "sum", 3)))))
 774                 do_sksum(progname, argv+optind);
 775         if (!strcmp(progname, "base64")) do_edbase64(argv+optind);
 776
 777         idx = optind;
 778
 779         if (argv[idx]) {
 780                 if (password || rawkey > TFC_RAWKEY_KEYFILE) goto _nokeyfd;
 781                 if (!strcmp(argv[idx], "-")) kfd = 0;
 782                 else kfd = xopen(argv[idx], O_RDONLY | O_LARGEFILE);
 783
 784                 lio = strnlen(argv[idx], PATH_MAX);
 785                 memset(argv[idx], '*', lio);
 786
 787                 idx++;
 788         }
 789         else password = YES;
 790
 791         errno = 0;
 792         if (do_full_key == NO && tweakf) {
 793                 int twfd;
 794
 795                 if (!strcmp(tweakf, "-")) twfd = 0;
 796                 else twfd = open(tweakf, O_RDONLY | O_LARGEFILE);
 797                 if (twfd == -1) xerror(NO, NO, YES, "%s", tweakf);
 798                 lio = ldone = xread(twfd, tweak, TF_TWEAK_SIZE);
 799                 if (lio == NOSIZE) xerror(NO, NO, YES, "%s", tweakf);
 800                 if (ldone < TF_TWEAK_SIZE)
 801                         xerror(NO, NO, YES, "%s: %zu bytes tweak required", tweakf, TF_TWEAK_SIZE);
 802                 xclose(twfd);
 803         }
 804
 805 _nokeyfd:
 806         errno = 0;
 807         if (argv[idx]) {
 808                 if (!strcmp(argv[idx], "-") && kfd) sfd = 0;
 809                 else {
 810                         sfd = xopen(argv[idx], O_RDONLY | O_LARGEFILE);
 811                         if (do_preserve_time) if (fstat(sfd, &s_stat) == -1)
 812                                 xerror(YES, NO, YES, "stat(%s)", argv[idx]);
 813                 }
 814
 815                 if ((do_mac >= TFC_MAC_VRFY || do_mac <= TFC_MAC_DROP) && !do_mac_file) {
 816                         maxlen = tfc_fdsize(sfd);
 817                         if (maxlen == NOFSIZE)
 818                                 xerror(NO, YES, YES,
 819                                 "Cannot verify embedded MAC with non-seekable source!");
 820                         maxlen -= TF_FROM_BITS(macbits);
 821                 }
 822                 srcfname = argv[idx];
 823                 idx++;
 824         }
 825
 826         if (!do_mac_file && (do_mac >= TFC_MAC_VRFY && sfd == 0))
 827                 xerror(NO, YES, YES, "Cannot verify embedded MAC with non-seekable source!");
 828
 829         if (ctrsz == NOSIZE) ctrsz = TF_BLOCK_SIZE;
 830         if (ctrsz > TF_BLOCK_SIZE) ctrsz = TF_BLOCK_SIZE;
 831
 832         if (ctr_mode == TFC_MODE_ECB) goto _ctrskip1;
 833         errno = 0;
 834         if (counter_file) {
 835                 int ctrfd;
 836
 837                 if (!strcmp(counter_file, "-")) ctrfd = 0;
 838                 else ctrfd = xopen(counter_file, O_RDONLY | O_LARGEFILE);
 839                 lio = xread(ctrfd, ctr, ctrsz);
 840                 if (lio == NOSIZE) xerror(NO, NO, YES, "%s", counter_file);
 841                 if (lio < ctrsz) xerror(NO, YES, YES, "counter file is too small (%zu)!", lio);
 842                 xclose(ctrfd);
 843         }
 844         else if (counter_opt == TFC_CTR_HEAD) {
 845                 pblk = ctr;
 846                 ldone = 0;
 847                 lrem = lblock = ctrsz;
 848                 if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(sfd);
 849 _ctrragain:     lio = xread(sfd, pblk, lrem);
 850                 if (lio != NOSIZE) ldone += lio;
 851                 else {
 852                         if (errno != EIO && catch_all_errors != YES)
 853                                 xerror(NO, NO, NO, "%s", srcfname);
 854                         switch (error_action) {
 855                                 case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", srcfname); goto _ctrragain; break;
 856                                 case TFC_ERRACT_SYNC:
 857                                 case TFC_ERRACT_LSYNC:
 858                                         xerror(YES, NO, NO, "%s", srcfname);
 859                                         lio = ldone = lrem = lblock;
 860                                         memset(ctr, 0, lio);
 861                                         if (rdpos == NOFSIZE) lseek(sfd, lio, SEEK_CUR);
 862                                         else lseek(sfd, rdpos + lio, SEEK_SET);
 863                                         break;
 864                                 default: xerror(NO, NO, NO, "%s", srcfname); break;
 865                         }
 866                 }
 867                 if (lio && lio < lrem) {
 868                         pblk += lio;
 869                         lrem -= lio;
 870                         goto _ctrragain;
 871                 }
 872                 total_processed_src += ldone;
 873         }
 874
 875 _ctrskip1:
 876         if (iseek) {
 877                 if (counter_opt == TFC_CTR_HEAD && ctr_mode != TFC_MODE_ECB)
 878                         iseek += ctrsz;
 879                 if (lseek(sfd, iseek, SEEK_SET) == -1)
 880                         xerror(ignore_seek_errors, NO, NO, "%s: seek failed", srcfname);
 881         }
 882
 883         if (ctr_mode == TFC_MODE_PLAIN) goto _plain;
 884
 885         if (verbose) tfc_esay("%s: hashing password", tfc_format_pid(progname));
 886
 887         if (rawkey == TFC_RAWKEY_KEYFILE) {
 888                 tfc_yesno xtskeyset = NO;
 889
 890                 pblk = key;
 891 _xts2key:       ldone = 0;
 892                 lrem = lblock = TF_FROM_BITS(TFC_KEY_BITS);
 893                 if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(kfd);
 894 _keyragain:     lio = xread(kfd, pblk, lrem);
 895                 if (lio != NOSIZE) ldone += lio;
 896                 else {
 897                         if (errno != EIO && catch_all_errors != YES)
 898                                 xerror(NO, NO, NO, "reading key");
 899                         switch (error_action) {
 900                                 case TFC_ERRACT_CONT: xerror(YES, NO, NO, "reading key"); goto _keyragain; break;
 901                                 case TFC_ERRACT_SYNC:
 902                                 case TFC_ERRACT_LSYNC:
 903                                         xerror(YES, NO, NO, "reading key");
 904                                         lio = ldone = lrem = lblock;
 905                                         memset(key, 0, lio);
 906                                         if (rdpos == NOFSIZE) lseek(kfd, lio, SEEK_CUR);
 907                                         else lseek(kfd, rdpos + lio, SEEK_SET);
 908                                         break;
 909                                 default: xerror(NO, NO, NO, "reading key"); break;
 910                         }
 911                 }
 912                 if (lio && lio < lrem) {
 913                         pblk += lio;
 914                         lrem -= lio;
 915                         goto _keyragain;
 916                 }
 917                 if (ldone < lblock) xerror(NO, YES, YES, "rawkey too small! (%zu)", ldone);
 918
 919                 if (ctr_mode == TFC_MODE_XTS) {
 920                         if (xtskeyset == NO) {
 921                                 pblk = xtskey;
 922                                 xtskeyset = YES;
 923                                 goto _xts2key;
 924                         }
 925                 }
 926         }
 927         else if (rawkey == TFC_RAWKEY_ASKSTR) {
 928                 tfc_yesno xtskeyset = NO;
 929
 930                 pblk = key; n = sizeof(key);
 931 _xts2keyaskstr: memset(&getps, 0, sizeof(struct getpasswd_state));
 932                 getps.fd = getps.efd = -1;
 933                 getps.passwd = (char *)pblk;
 934                 getps.pwlen = n;
 935                 getps.echo = pw_prompt ? pw_prompt : "Enter rawkey (str): ";
 936                 getps.charfilter = (show_secrets == YES) ? getps_plain_filter : getps_filter;
 937                 getps.maskchar = (show_secrets == YES) ? 0 : 'x';
 938                 getps.flags = GETP_WAITFILL;
 939                 n = xgetpasswd(&getps);
 940                 if (n == NOSIZE) xerror(NO, NO, YES, "getting string rawkey");
 941                 if (n == ((size_t)-2)) xexit(1);
 942                 if (verbose) say_hint(pblk, n, "Raw string key hint");
 943                 if (ctr_mode == TFC_MODE_XTS) {
 944                         if (xtskeyset == NO) {
 945                                 pblk = xtskey; n = sizeof(xtskey);
 946                                 xtskeyset = YES;
 947                                 goto _xts2keyaskstr;
 948                         }
 949                 }
 950         }
 951         else if (rawkey == TFC_RAWKEY_ASKHEX) {
 952                 tfc_yesno xtskeyset = NO;
 953
 954                 pblk = key;
 955 _rawkey_hex_again:
 956                 memset(&getps, 0, sizeof(struct getpasswd_state));
 957                 getps.fd = getps.efd = -1;
 958                 getps.passwd = pwdask;
 959                 getps.pwlen = (TF_FROM_BITS(TFC_KEY_BITS)*2);
 960                 getps.echo = pw_prompt ? pw_prompt : "Enter rawkey (hex): ";
 961                 getps.charfilter = (show_secrets == YES) ? getps_plain_hex_filter : getps_hex_filter;
 962                 getps.maskchar = (show_secrets == YES) ? 0 : 'x';
 963                 getps.flags = GETP_WAITFILL;
 964                 n = xgetpasswd(&getps);
 965                 if (n == NOSIZE) xerror(NO, NO, YES, "getting hex rawkey");
 966                 if (n == ((size_t)-2)) xexit(1);
 967                 if (n % 2) {
 968                         tfc_esay("Please input even number of hex digits!");
 969                         goto _rawkey_hex_again;
 970                 }
 971                 hex2bin(pblk, pwdask);
 972                 memset(pwdask, 0, sizeof(pwdask));
 973                 if (verbose) say_hint(pblk, n/2, "Raw hex key hint");
 974                 if (ctr_mode == TFC_MODE_XTS) {
 975                         if (xtskeyset == NO) {
 976                                 pblk = xtskey;
 977                                 xtskeyset = YES;
 978                                 goto _rawkey_hex_again;
 979                         }
 980                 }
 981         }
 982         else if (password) {
 983 _pwdagain:      memset(&getps, 0, sizeof(struct getpasswd_state));
 984                 getps.fd = getps.efd = -1;
 985                 getps.passwd = pwdask;
 986                 getps.pwlen = sizeof(pwdask)-1;
 987                 getps.echo = pw_prompt ? pw_prompt : "Enter password: ";
 988                 getps.charfilter = (show_secrets == YES) ? getps_plain_filter : getps_filter;
 989                 getps.maskchar = (show_secrets == YES) ? 0 : 'x';
 990                 getps.flags = GETP_WAITFILL;
 991                 n = xgetpasswd(&getps);
 992                 if (n == NOSIZE) xerror(NO, NO, YES, "getting password");
 993                 if (n == ((size_t)-2)) xexit(1);
 994                 if (do_edcrypt == TFC_DO_ENCRYPT && no_repeat == NO) {
 995                         getps.fd = getps.efd = -1;
 996                         getps.passwd = pwdagain;
 997                         getps.pwlen = sizeof(pwdagain)-1;
 998                         getps.echo = "Enter it again: ";
 999                         getps.flags = GETP_WAITFILL;
1000                         n = xgetpasswd(&getps);
1001                         if (n == NOSIZE) xerror(NO, NO, YES, "getting password again");
1002                         if (n == ((size_t)-2)) xexit(1);
1003                         if (strncmp(pwdask, pwdagain, sizeof(pwdagain)-1) != 0) {
1004                                 tfc_esay("Passwords are different, try again");
1005                                 goto _pwdagain;
1006                         }
1007                 }
1008                 if (verbose) say_hint(pwdask, n, "Password hint");
1009                 skein(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, pwdask, n);
1010                 memset(pwdask, 0, sizeof(pwdask));
1011                 memset(pwdagain, 0, sizeof(pwdagain));
1012         }
1013         else {
1014                 if (skeinfd(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, kfd, keyoffset, maxkeylen) != YES)
1015                         xerror(NO, NO, YES, "hashing key");
1016         }
1017
1018         if (rawkey == NO) {
1019                 if (tfc_saltsz > 0) {
1020                         memcpy(tfc_salt+tfc_saltsz, key, TF_FROM_BITS(TFC_KEY_BITS));
1021                         skein(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, tfc_salt, tfc_saltsz+TF_FROM_BITS(TFC_KEY_BITS));
1022                 }
1023                 if (nr_turns > 1) for (x = 0; x < nr_turns; x++)
1024                         skein(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
1025                 memset(tfc_salt, 0, TFC_MAX_SALT);
1026         }
1027
1028         if (ctr_mode == TFC_MODE_XTS && rawkey == NO) {
1029                 skein(xtskey, TF_NR_KEY_BITS, mackey_opt ? mackey : NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
1030         }
1031
1032         if (genkeyf) {
1033                 int krfd;
1034                 tfc_yesno xtskeyset = NO;
1035
1036                 pblk = key;
1037                 if (!strcmp(genkeyf, "-")) krfd = 1;
1038                 else krfd = xopen(genkeyf, O_WRONLY | O_CREAT | O_LARGEFILE | write_flags);
1039 _xts2genkey:    if (xwrite(krfd, pblk, TF_FROM_BITS(TFC_KEY_BITS)) == NOSIZE) xerror(NO, NO, YES, "%s", genkeyf);
1040                 if (do_fsync && fsync(krfd) == -1) xerror(NO, NO, YES, "%s", genkeyf);
1041                 if (verbose && xtskeyset == NO) {
1042                         tfc_esay("%s: password hashing done", tfc_format_pid(progname));
1043                         tfc_esay("%s: rawkey written to %s.", tfc_format_pid(progname), genkeyf);
1044                         tfc_esay("%s: Have a nice day!", tfc_format_pid(progname));
1045                 }
1046
1047                 if (ctr_mode == TFC_MODE_XTS) {
1048                         if (xtskeyset == NO) {
1049                                 pblk = xtskey;
1050                                 xtskeyset = YES;
1051                                 goto _xts2genkey;
1052                         }
1053                 }
1054
1055                 fchmod(krfd, 0600);
1056                 xclose(krfd);
1057                 xexit(0);
1058         }
1059
1060         if (do_mac != NO) {
1061                 if (mackey_opt == TFC_MACKEY_RAWKEY) skein(mackey, TF_MAX_BITS, key, key, TF_FROM_BITS(TFC_KEY_BITS));
1062                 if (verbose) tfc_esay("%s: doing MAC calculation, processing speed "
1063                         "will be slower.", tfc_format_pid(progname));
1064                 if (mackey_opt) skein_init_key(&sk, mackey, macbits);
1065                 else skein_init(&sk, macbits);
1066         }
1067
1068         if (!counter_file && counter_opt <= TFC_CTR_SHOW && ctr_mode != TFC_MODE_ECB) {
1069                 skein(ctr, TF_TO_BITS(ctrsz), mackey_opt ? mackey : NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
1070         }
1071
1072         tf_convkey(key);
1073         if (ctr_mode == TFC_MODE_XTS) tf_convkey(xtskey);
1074         if (do_full_key == NO) {
1075                 if (!tweakf) skein(tweak, TF_NR_TWEAK_BITS, NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
1076                 tf_tweak_set(key, tweak);
1077         }
1078         if (ctr_mode == TFC_MODE_ECB) goto _ctrskip2;
1079
1080         if (counter_opt == TFC_CTR_ZERO) memset(ctr, 0, ctrsz);
1081
1082         tfc_data_to_words64(&iseek_blocks, sizeof(iseek_blocks));
1083         tf_ctr_set(ctr, &iseek_blocks, sizeof(iseek_blocks));
1084         if (do_mac == TFC_MAC_JUST_VRFY2) memcpy(svctr, ctr, TF_BLOCK_SIZE);
1085
1086         if (counter_opt == TFC_CTR_SHOW) {
1087                 switch (do_outfmt) {
1088                         case TFC_OUTFMT_B64: tfc_printbase64(stderr, ctr, ctrsz, YES); break;
1089                         case TFC_OUTFMT_RAW: xwrite(2, ctr, ctrsz); break;
1090                         case TFC_OUTFMT_HEX: mehexdump(ctr, ctrsz, ctrsz, YES); break;
1091                 }
1092         }
1093         else if (counter_opt == TFC_CTR_RAND) tfc_getrandom(ctr, ctrsz);
1094
1095 _ctrskip2:
1096         if (kfd != -1) {
1097                 xclose(kfd);
1098                 kfd = -1;
1099         }
1100         if (verbose) tfc_esay("%s: password hashing done", tfc_format_pid(progname));
1101
1102         if (overwrite_source && srcfname) argv[idx] = srcfname;
1103
1104 _plain:
1105         if (argv[idx]) {
1106                 if (!strcmp(argv[idx], "-")) dfd = 1;
1107                 else dfd = xxopen(YES, argv[idx], O_RDWR | O_LARGEFILE | write_flags);
1108                 if (dfd == -1) dfd = xopen(argv[idx], O_WRONLY | O_CREAT | O_LARGEFILE | write_flags);
1109                 dstfname = argv[idx];
1110                 idx++;
1111         }
1112
1113         if (oseek) {
1114                 if (lseek(dfd, oseek, SEEK_SET) == -1)
1115                         xerror(ignore_seek_errors, NO, NO, "%s: seek failed", dstfname);
1116         }
1117
1118         for (x = 1; x < NSIG; x++) signal(x, SIG_IGN);
1119         memset(&sigact, 0, sizeof(sigact));
1120         sigact.sa_flags = SA_RESTART;
1121         sigact.sa_handler = print_crypt_status;
1122         sigaction(SIGUSR1, &sigact, NULL);
1123         sigaction(SIGALRM, &sigact, NULL);
1124         if (status_timer) setup_next_alarm(status_timer > 1000000 ? 1000000 : status_timer);
1125         sigact.sa_handler = change_status_width;
1126         sigaction(SIGQUIT, &sigact, NULL);
1127         sigact.sa_handler = change_status_timer;
1128         sigaction(SIGUSR2, &sigact, NULL);
1129         if (quiet == NO) {
1130                 sigact.sa_handler = print_crypt_status;
1131                 sigaction(SIGINT, &sigact, NULL);
1132                 sigaction(SIGTERM, &sigact, NULL);
1133                 sigaction(SIGTSTP, &sigact, NULL);
1134         }
1135         else {
1136                 sigact.sa_handler = exit_sigterm;
1137                 sigaction(SIGINT, &sigact, NULL);
1138                 sigaction(SIGTERM, &sigact, NULL);
1139                 sigact.sa_handler = handle_sigtstp;
1140                 sigaction(SIGTSTP, &sigact, NULL);
1141         }
1142         memset(&sigact, 0, sizeof(struct sigaction));
1143
1144         tfc_getcurtime(&delta_time);
1145
1146         errno = 0;
1147         if (counter_opt == TFC_CTR_RAND && ctr_mode != TFC_MODE_ECB) {
1148                 pblk = ctr;
1149                 lio = lrem = ctrsz;
1150                 ldone = 0;
1151 _ctrwagain:     lio = xwrite(dfd, pblk, lrem);
1152                 if (lio != NOSIZE) ldone += lio;
1153                 else xerror(NO, NO, NO, "%s", dstfname);
1154                 if (do_fsync && fsync(dfd) == -1) xerror(NO, NO, NO, "%s", dstfname);
1155                 if (lio < lrem) {
1156                         pblk += lio;
1157                         lrem -= lio;
1158                         goto _ctrwagain;
1159                 }
1160                 total_written_dst += ldone;
1161                 total_processed_dst += ldone;
1162                 delta_processed += ldone;
1163         }
1164
1165         if (ctr_mode == TFC_MODE_STREAM) tfe_init_iv(&tfe, key, ctr);
1166
1167         if (do_mac == TFC_MAC_JUST_VRFY2) {
1168                 rwd = tfc_fdgetpos(sfd);
1169                 if (rwd == NOFSIZE) {
1170                         tfc_esay("%s: WARNING: input is not seekable, disabling MAC testing mode", tfc_format_pid(progname));
1171                         do_mac = TFC_MAC_VRFY;
1172                 }
1173                 goto _nodecrypt_again_vrfy2;
1174
1175 _decrypt_again_vrfy2:
1176                 if (lseek(sfd, (off_t)rwd, SEEK_SET) == ((off_t)-1)) {
1177                         xerror(ignore_seek_errors, NO, YES, "MAC testing seek failed");
1178                 }
1179                 total_processed_src = rwd;
1180                 memcpy(ctr, svctr, TF_BLOCK_SIZE);
1181                 memset(svctr, 0, TF_BLOCK_SIZE);
1182         }
1183
1184 _nodecrypt_again_vrfy2:
1185         loopcnt = 1;
1186         errno = 0;
1187         do_stop = NO;
1188         while (1) {
1189                 if (do_stop) break;
1190                 pblk = srcblk;
1191                 ldone = 0;
1192                 lrem = lblock = blk_len_adj(maxlen, total_processed_src, blksize);
1193                 if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(sfd);
1194 _ragain:        lio = xread(sfd, pblk, lrem);
1195                 if (lio == 0) {
1196                         if ((do_read_loops != 0 && sfd != 0) && (loopcnt < do_read_loops)) {
1197                                 lseek(sfd, 0L, SEEK_SET);
1198                                 loopcnt++;
1199                                 goto _ragain;
1200                         }
1201
1202                         do_stop = YES;
1203                 }
1204                 if (lio != NOSIZE) ldone += lio;
1205                 else {
1206                         if (errno != EIO && catch_all_errors != YES)
1207                                 xerror(NO, NO, NO, "%s", srcfname);
1208                         switch (error_action) {
1209                                 case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", srcfname); goto _ragain; break;
1210                                 case TFC_ERRACT_SYNC:
1211                                 case TFC_ERRACT_LSYNC:
1212                                         xerror(YES, NO, NO, "%s", srcfname);
1213                                         lio = ldone = lrem = lblock;
1214                                         memset(srcblk, 0, lio);
1215                                         if (rdpos == NOFSIZE) lseek(sfd, lio, SEEK_CUR);
1216                                         else lseek(sfd, rdpos + lio, SEEK_SET);
1217                                         break;
1218                                 default: xerror(NO, NO, NO, "%s", srcfname); break;
1219                         }
1220                 }
1221                 if (unbuffered == NO && lio && lio < lrem) {
1222                         pblk += lio;
1223                         lrem -= lio;
1224                         goto _ragain;
1225                 }
1226                 total_processed_src += ldone;
1227
1228                 if (do_pad && (ldone % TF_BLOCK_SIZE)) {
1229                         size_t orig = ldone;
1230                         ldone += (TF_BLOCK_SIZE - (ldone % TF_BLOCK_SIZE));
1231                         if (ldone > blksize) ldone = blksize;
1232                         memset(srcblk+orig, 0, sizeof(srcblk)-orig);
1233                 }
1234
1235                 if (do_mac == TFC_MAC_SIGN) skein_update(&sk, srcblk, ldone);
1236
1237                 if (ctr_mode == TFC_MODE_CTR) tf_ctr_crypt(key, ctr, dstblk, srcblk, ldone);
1238                 else if (ctr_mode == TFC_MODE_STREAM) tf_stream_crypt(&tfe, dstblk, srcblk, ldone);
1239                 else if (ctr_mode == TFC_MODE_XTS && do_edcrypt == TFC_DO_ENCRYPT)
1240                         tf_xts_encrypt(key, xtskey, ctr, dstblk, srcblk, ldone, xtsblocks);
1241                 else if (ctr_mode == TFC_MODE_XTS && do_edcrypt == TFC_DO_DECRYPT)
1242                         tf_xts_decrypt(key, xtskey, ctr, dstblk, srcblk, ldone, xtsblocks);
1243                 else if (ctr_mode == TFC_MODE_ECB && do_edcrypt == TFC_DO_ENCRYPT)
1244                         tf_ecb_encrypt(key, dstblk, srcblk, ldone);
1245                 else if (ctr_mode == TFC_MODE_ECB && do_edcrypt == TFC_DO_DECRYPT)
1246                         tf_ecb_decrypt(key, dstblk, srcblk, ldone);
1247                 else if (ctr_mode == TFC_MODE_CBC && do_edcrypt == TFC_DO_ENCRYPT)
1248                         tf_cbc_encrypt(key, ctr, dstblk, srcblk, ldone);
1249                 else if (ctr_mode == TFC_MODE_CBC && do_edcrypt == TFC_DO_DECRYPT)
1250                         tf_cbc_decrypt(key, ctr, dstblk, srcblk, ldone);
1251                 else if (ctr_mode == TFC_MODE_PCBC && do_edcrypt == TFC_DO_ENCRYPT)
1252                         tf_pcbc_encrypt(key, ctr, dstblk, srcblk, ldone);
1253                 else if (ctr_mode == TFC_MODE_PCBC && do_edcrypt == TFC_DO_DECRYPT)
1254                         tf_pcbc_decrypt(key, ctr, dstblk, srcblk, ldone);
1255
1256                 else if (ctr_mode == TFC_MODE_PLAIN)
1257                         memcpy(dstblk, srcblk, ldone);
1258
1259                 if (do_mac >= TFC_MAC_VRFY) skein_update(&sk, dstblk, ldone);
1260                 if (do_mac >= TFC_MAC_JUST_VRFY) goto _nowrite;
1261
1262                 pblk = dstblk;
1263                 lrem = ldone;
1264                 ldone = 0;
1265 _wagain:        lio = xwrite(dfd, pblk, lrem);
1266                 if (lio != NOSIZE) ldone += lio;
1267                 else xerror(NO, NO, NO, "%s", dstfname);
1268                 if (do_fsync && fsync(dfd) == -1) xerror(NO, NO, NO, "%s", dstfname);
1269                 if (lio < lrem) {
1270                         pblk += lio;
1271                         lrem -= lio;
1272                         goto _wagain;
1273                 }
1274                 total_written_dst += ldone;
1275 _nowrite:       total_processed_dst += ldone;
1276                 delta_processed += ldone;
1277
1278                 if (maxlen != NOFSIZE && total_processed_src >= maxlen) {
1279                         do_stop = YES;
1280                         break;
1281                 }
1282         }
1283
1284         if (verbose && status_timer && do_statline_dynamic == YES && statline_was_shown == YES) tfc_esay("\n");
1285
1286         errno = 0;
1287         if (do_mac >= TFC_MAC_VRFY) {
1288                 if (!do_mac_file) {
1289                         pblk = macvrfy;
1290                         ldone = 0;
1291                         lrem = lblock = TF_FROM_BITS(macbits);
1292                         if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(sfd);
1293 _macragain:             lio = xread(sfd, pblk, lrem);
1294                         if (lio != NOSIZE) ldone += lio;
1295                         else {
1296                                 if (errno != EIO && catch_all_errors != YES)
1297                                         xerror(NO, NO, NO, "%s", srcfname);
1298                                 switch (error_action) {
1299                                         case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", srcfname); goto _macragain; break;
1300                                         case TFC_ERRACT_SYNC:
1301                                         case TFC_ERRACT_LSYNC:
1302                                                 xerror(YES, NO, NO, "%s", srcfname);
1303                                                 lio = ldone = lrem = lblock;
1304                                                 memset(macvrfy, 0, lio);
1305                                                 if (rdpos == NOFSIZE) lseek(sfd, lio, SEEK_CUR);
1306                                                 else lseek(sfd, rdpos + lio, SEEK_SET);
1307                                                 break;
1308                                         default: xerror(NO, NO, NO, "%s", srcfname); break;
1309                                 }
1310                         }
1311                         if (lio && lio < lrem) {
1312                                 pblk += lio;
1313                                 lrem -= lio;
1314                                 goto _macragain;
1315                         }
1316                         total_processed_src += ldone;
1317                 }
1318                 else {
1319                         int mfd;
1320
1321                         if (!strcmp(do_mac_file, "-")) mfd = 0;
1322                         else mfd = xopen(do_mac_file, O_RDONLY | O_LARGEFILE);
1323                         lio = ldone = xread(mfd, tmpdata, sizeof(tmpdata));
1324                         if (lio == NOSIZE) xerror(NO, NO, YES, "%s", do_mac_file);
1325                         if (!memcmp(tmpdata, TFC_ASCII_TFC_MAC_FOURCC, TFC_ASCII_TFC_MAC_FOURCC_LEN)) {
1326                                 memmove(tmpdata, tmpdata+TFC_ASCII_TFC_MAC_FOURCC_LEN,
1327                                         sizeof(tmpdata)-TFC_ASCII_TFC_MAC_FOURCC_LEN);
1328                                 lio = TF_FROM_BITS(macbits);
1329                                 base64_decode((char *)macvrfy, lio, (char *)tmpdata, sizeof(tmpdata));
1330                         }
1331                         else memcpy(macvrfy, tmpdata, TF_FROM_BITS(macbits));
1332                         xclose(mfd);
1333                 }
1334
1335                 if (ldone < TF_FROM_BITS(macbits)) {
1336                         if (quiet == NO) tfc_esay("%s: short signature (%zu), "
1337                                 "not verifying", tfc_format_pid(progname), ldone);
1338                         exitcode = 1;
1339                         goto _shortmac;
1340                 }
1341
1342                 skein_final(macresult, &sk);
1343
1344                 if (ctr_mode == TFC_MODE_CTR) tf_ctr_crypt(key, ctr, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1345                 else if (ctr_mode == TFC_MODE_STREAM) tf_stream_crypt(&tfe, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1346                 else if (ctr_mode == TFC_MODE_XTS) tf_xts_decrypt(key, xtskey, ctr, tmpdata, macvrfy, TF_FROM_BITS(macbits), xtsblocks);
1347                 else if (ctr_mode == TFC_MODE_ECB) tf_ecb_decrypt(key, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1348                 else if (ctr_mode == TFC_MODE_CBC) tf_cbc_decrypt(key, ctr, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1349                 else if (ctr_mode == TFC_MODE_PCBC) tf_pcbc_decrypt(key, ctr, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1350
1351                 if (!memcmp(tmpdata, macresult, TF_FROM_BITS(macbits))) {
1352                         if (quiet == NO) {
1353                                 tfc_esay("%s: signature is good", tfc_format_pid(progname));
1354                                 if (verbose) {
1355                                         if (do_outfmt == TFC_OUTFMT_B64) tfc_printbase64(stderr, macresult, TF_FROM_BITS(macbits), YES);
1356                                         else mehexdump(macresult, TF_FROM_BITS(macbits), TF_FROM_BITS(macbits), YES);
1357                                 }
1358                         }
1359                         if (do_mac == TFC_MAC_JUST_VRFY2) {
1360                                 if (verbose) tfc_esay("%s: -u: MAC signature is valid, proceeding with decrypting it again", tfc_format_pid(progname));
1361                                 maxlen = total_processed_src - SKEIN_DIGEST_SIZE;
1362                                 do_mac = TFC_MAC_DROP2;
1363                                 goto _decrypt_again_vrfy2;
1364                         }
1365                 }
1366                 else {
1367                         if (quiet == NO) {
1368                                 tfc_esay("%s: signature is BAD: "
1369                                 "wrong password, key, mode, or file is not signed", tfc_format_pid(progname));
1370                                 if (do_mac == TFC_MAC_JUST_VRFY2) tfc_esay("%s: -u: MAC signature is invalid, not decrypting it again", tfc_format_pid(progname));
1371                         }
1372                         exitcode = 1;
1373                 }
1374
1375 _shortmac:      memset(macvrfy, 0, sizeof(macvrfy));
1376                 memset(macresult, 0, sizeof(macresult));
1377                 memset(tmpdata, 0, sizeof(tmpdata));
1378         }
1379         else if (do_mac == TFC_MAC_SIGN) {
1380                 skein_final(macresult, &sk);
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_PCBC) tf_pcbc_encrypt(key, ctr, tmpdata, macresult, TF_FROM_BITS(macbits));
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 }