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