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         tfc_yesno flipfd;
 134         int c;
 135         double td;
 136         char *s, *d, *t, *stoi;
 137         size_t x, n;
 138
 139         progpid = getpid();
 140         progname = basename(argv[0]);
 141
 142         if (!isatty(2)) do_statline_dynamic = NO;
 143
 144         s = (char *)srcblk;
 145         d = getenv("HOME");
 146         if (!d) d = "";
 147         n = PATH_MAX > sizeof(srcblk) ? sizeof(srcblk) : PATH_MAX;
 148         if (xstrlcpy(s, d, n) >= n) goto _baddfname;
 149         if (xstrlcat(s, "/.tfcrypt.defs", n) >= n) goto _baddfname;
 150         read_defaults(s, YES);
 151 _baddfname:
 152         memset(s, 0, n);
 153
 154         if (!strcmp(progname, "iotool")) {
 155                 do_edcrypt = TFC_DO_PLAIN;
 156                 ctr_mode = TFC_MODE_PLAIN;
 157         }
 158
 159         if (!strcmp(progname, "xor")) {
 160                 do_edcrypt = TFC_DO_PLAIN;
 161                 ctr_mode = TFC_MODE_XOR;
 162                 /* xor: default to stdin if invoked without args */
 163                 kfd = 0;
 164         }
 165
 166         opterr = 0;
 167         while ((c = getopt(argc, argv, "L:s:aU:C:r:K:t:PXkzxc:l:qedn:vV:pwE:o:O:S:AmuM:R:Z:WHD:")) != -1) {
 168                 switch (c) {
 169                         case 'L':
 170                                 read_defaults(optarg, NO);
 171                                 break;
 172                         case 's':
 173                                 saltf = optarg;
 174                                 break;
 175                         case 'r':
 176                                 randsource = optarg;
 177                                 break;
 178                         case 'c':
 179                                 if (!strcasecmp(optarg, "show"))
 180                                         counter_opt = TFC_CTR_SHOW;
 181                                 else if (!strcasecmp(optarg, "head"))
 182                                         counter_opt = TFC_CTR_HEAD;
 183                                 else if (!strcasecmp(optarg, "rand"))
 184                                         counter_opt = TFC_CTR_RAND;
 185                                 else if (!strcasecmp(optarg, "zero"))
 186                                         counter_opt = TFC_CTR_ZERO;
 187                                 else if (strchr(optarg, ':')) {
 188                                         char *ss, chr;
 189
 190                                         counter_opt = TFC_CTR_SSET;
 191                                         n = sizeof(ctr);
 192
 193                                         s = d = optarg; t = NULL;
 194                                         while ((s = strtok_r(d, ",", &t))) {
 195                                                 if (d) d = NULL;
 196
 197                                                 if (n == 0) break;
 198                                                 ss = strchr(s, ':');
 199                                                 if (!ss) continue;
 200                                                 *ss = 0; ss++;
 201                                                 chr = (char)strtoul(s, &stoi, 16);
 202                                                 if (!str_empty(stoi)) continue;
 203                                                 x = (size_t)strtoul(ss, &stoi, 10);
 204                                                 if (!str_empty(stoi)) continue;
 205                                                 if (x > n) x = n;
 206                                                 memset(ctr+(sizeof(ctr)-n), (int)chr, x);
 207                                                 n -= x;
 208                                         }
 209                                 }
 210                                 else counter_file = sksum_hashlist_file = optarg;
 211                                 break;
 212                         case 'C':
 213                                 if (!strcasecmp(optarg, "ctr"))
 214                                         ctr_mode = TFC_MODE_CTR;
 215                                 else if (!strcasecmp(optarg, "stream"))
 216                                         ctr_mode = TFC_MODE_STREAM;
 217                                 else if (!strcasecmp(optarg, "cbc"))
 218                                         ctr_mode = TFC_MODE_CBC;
 219                                 else if (!strcasecmp(optarg, "pcbc"))
 220                                         ctr_mode = TFC_MODE_PCBC;
 221                                 else if (!strcasecmp(optarg, "ecb"))
 222                                         ctr_mode = TFC_MODE_ECB;
 223                                 else if (!strcasecmp(optarg, "xts"))
 224                                         ctr_mode = TFC_MODE_XTS;
 225                                 else xerror(NO, YES, YES, "%s: invalid mode of operation", optarg);
 226                                 break;
 227                         case 'P':
 228                         case 'X':
 229                                 do_edcrypt = TFC_DO_PLAIN;
 230                                 if (c == 'X') {
 231                                         ctr_mode = TFC_MODE_XOR;
 232                                         /* xor: default to stdin if invoked without args */
 233                                         kfd = 0;
 234                                 }
 235                                 else ctr_mode = TFC_MODE_PLAIN;
 236                                 break;
 237                         case 'e':
 238                                 if (do_edcrypt != TFC_DO_PLAIN) do_edcrypt = TFC_DO_ENCRYPT;
 239                                 break;
 240                         case 'd':
 241                                 if (do_edcrypt != TFC_DO_PLAIN) do_edcrypt = TFC_DO_DECRYPT;
 242                                 break;
 243                         case 'D':
 244                                 macbits = strtoul(optarg, &stoi, 10);
 245                                 if (macbits == 0 || !str_empty(stoi) || macbits < 8
 246                                 || macbits > TF_MAX_BITS || macbits % 8)
 247                                         xerror(NO, YES, YES, "%s: invalid MAC bits setting", optarg);
 248                                 break;
 249                         case 'n':
 250                                 nr_turns = sksum_turns = strtoul(optarg, &stoi, 10);
 251                                 if (!str_empty(stoi)) xerror(NO, YES, YES, "%s: invalid number of turns", optarg);
 252                                 break;
 253                         case 'U':
 254                                 if (!strcasecmp(optarg, "key"))
 255                                         mackey_opt = TFC_MACKEY_RAWKEY;
 256                                 else if (!strcasecmp(optarg, "pwd"))
 257                                         mackey_opt = TFC_MACKEY_PASSWORD;
 258                                 else {
 259                                         mackey_opt = TFC_MACKEY_FILE;
 260                                         mackeyf = optarg;
 261                                 }
 262                                 break;
 263                         case 'p':
 264                                 password = YES;
 265                                 break;
 266                         case 'k':
 267                                 rawkey = TFC_RAWKEY_KEYFILE;
 268                                 break;
 269                         case 'z':
 270                                 rawkey = TFC_RAWKEY_ASKSTR;
 271                                 break;
 272                         case 'x':
 273                                 rawkey = TFC_RAWKEY_ASKHEX;
 274                                 break;
 275                         case 'K':
 276                                 verbose = YES;
 277                                 genkeyf = optarg;
 278                                 break;
 279                         case 't':
 280                                 tweakf = optarg;
 281                                 do_full_key = NO;
 282                                 break;
 283                         case 'l':
 284                                 if (maxlen != NOFSIZE) break;
 285
 286                                 maxlen = tfc_humanfsize(optarg, &stoi);
 287                                 if (!str_empty(stoi)) {
 288                                         maxlen = tfc_fnamesize(optarg, YES);
 289                                         maxlen = tfc_modifysize(maxlen, strchr(optarg, ':'));
 290                                         if (maxlen == NOFSIZE) xerror(NO, YES, YES,
 291                                         "%s: invalid count value", optarg);
 292                                 }
 293                                 else maxlen = tfc_modifysize(maxlen, strchr(optarg, ':'));
 294                                 if (counter_opt == TFC_CTR_HEAD)
 295                                         maxlen += TF_BLOCK_SIZE;
 296                                 break;
 297                         case 'w':
 298                                 overwrite_source = YES;
 299                                 break;
 300                         case 'E':
 301                                 if (!strcmp(optarg, "xall")) {
 302                                         catch_all_errors = YES;
 303                                         break;
 304                                 }
 305                                 if (!strcmp(optarg, "xseek")) {
 306                                         ignore_seek_errors = YES;
 307                                         break;
 308                                 }
 309                                 if (!strcmp(optarg, "exit"))
 310                                         error_action = TFC_ERRACT_EXIT;
 311                                 else if (!strncmp(optarg, "cont", 4))
 312                                         error_action = TFC_ERRACT_CONT;
 313                                 else if (!strcmp(optarg, "sync"))
 314                                         error_action = TFC_ERRACT_SYNC;
 315                                 else if (!strcmp(optarg, "lsync"))
 316                                         error_action = TFC_ERRACT_LSYNC;
 317                                 else xerror(NO, YES, YES, "invalid error action %s specified", optarg);
 318                                 break;
 319                         case 'o':
 320                                 open_log(optarg);
 321                                 break;
 322                         case 'O':
 323                                 s = d = optarg; t = NULL;
 324                                 while ((s = strtok_r(d, ",", &t))) {
 325                                         if (d) d = NULL;
 326                                         if (!strcmp(s, "sync"))
 327                                                 write_flags |= O_SYNC;
 328                                         else if (!strcmp(s, "trunc"))
 329                                                 write_flags |= O_TRUNC;
 330                                         else if (!strcmp(s, "append"))
 331                                                 write_flags |= O_APPEND;
 332                                         else if (!strcmp(s, "fsync"))
 333                                                 do_fsync = YES;
 334                                         else if (!strcmp(s, "pad"))
 335                                                 do_pad = YES;
 336                                         else if (!strcmp(s, "ro"))
 337                                                 read_only = YES;
 338                                         else if (!strcmp(s, "rw"))
 339                                                 read_only = NO;
 340                                         else if (!strcmp(s, "xtime"))
 341                                                 do_preserve_time = YES;
 342                                         else if (!strcmp(s, "gibsize"))
 343                                                 do_stats_in_gibs = YES;
 344                                         else if (!strcmp(s, "plainstats"))
 345                                                 do_statline_dynamic = NO;
 346                                         else if (!strcmp(s, "statless"))
 347                                                 do_less_stats = YES;
 348                                         else if (!strcmp(s, "norepeat"))
 349                                                 no_repeat = YES;
 350                                         else if (!strncmp(s, "prompt", 6) && *(s+6) == '=')
 351                                                 pw_prompt = s+7;
 352                                         else if (!strncmp(s, "macprompt", 9) && *(s+9) == '=')
 353                                                 mac_pw_prompt = s+10;
 354                                         else if (!strcmp(s, "shorthex"))
 355                                                 do_full_hexdump = NO;
 356                                         else if (!strcmp(s, "fullkey"))
 357                                                 do_full_key = YES;
 358                                         else if (!strcmp(s, "showsecrets"))
 359                                                 show_secrets = YES;
 360                                         else if (!strcmp(s, "finished"))
 361                                                 show_when_done = YES;
 362                                         else if (!strcmp(s, "pid"))
 363                                                 show_pid = YES;
 364                                         else if (!strcmp(s, "nobuf")) {
 365                                                 if (!tfc_is_freestream(ctr_mode)) xerror(NO, YES, YES,
 366                                                         "cannot activate unbuffered mode for non-stream cipher mode %s!",
 367                                                         tfc_modename(ctr_mode));
 368                                                 else unbuffered = YES;
 369                                         }
 370                                         else if (!strncmp(s, "readloops", 9) && *(s+9) == '=') {
 371                                                 do_read_loops = tfc_humanfsize(s+10, &stoi);
 372                                                 if (!str_empty(stoi)) do_read_loops = NOSIZE;
 373                                         }
 374                                         else if (!strncmp(s, "logfile", 7) && *(s+7) == '=')
 375                                                 open_log(s+8);
 376                                         else if (!strncmp(s, "iobs", 4) && *(s+4) == '=') {
 377                                                 s += 5;
 378                                                 blksize = (size_t)tfc_humanfsize(s, &stoi);
 379                                                 if (!str_empty(stoi)) {
 380                                                         blksize = (size_t)tfc_fnamesize(s, YES);
 381                                                         blksize = (size_t)tfc_modifysize((tfc_fsize)blksize, strchr(s, ':'));
 382                                                         if (blksize == NOSIZE) xerror(NO, YES, YES,
 383                                                         "%s: invalid block size value", s);
 384                                                 }
 385                                                 else blksize = (size_t)tfc_modifysize((tfc_fsize)blksize, strchr(s, ':'));
 386                                                 if (!tfc_is_freestream(ctr_mode) && blksize < TF_BLOCK_SIZE) xerror(NO, YES, YES,
 387                                                         "%s: block size is lesser than TF_BLOCK_SIZE (%u bytes)", s, TFC_U(TF_BLOCK_SIZE));
 388                                                 if (blksize > TFC_BLKSIZE) xerror(NO, YES, YES,
 389                                                         "%s: block size exceeds %u bytes",
 390                                                         s, TFC_U(TFC_BLKSIZE));
 391                                         }
 392                                         else if (!strncmp(s, "xtsblocks", 9) && *(s+9) == '=') {
 393                                                 s += 10;
 394                                                 xtsblocks = (size_t)tfc_humanfsize(s, &stoi);
 395                                                 if (!str_empty(stoi)) {
 396                                                         xtsblocks = (size_t)tfc_fnamesize(s, YES);
 397                                                         xtsblocks = (size_t)tfc_modifysize((tfc_fsize)xtsblocks, strchr(s, ':'));
 398                                                         if (xtsblocks == NOSIZE) xerror(NO, YES, YES,
 399                                                         "%s: invalid blocks per xts block value", s);
 400                                                 }
 401                                                 else xtsblocks = (size_t)tfc_modifysize((tfc_fsize)xtsblocks, strchr(s, ':'));
 402                                                 if (TFC_BLKSIZE % xtsblocks) xerror(NO, YES, YES,
 403                                                         "%s: nr of blocks per xts block is not round to %u bytes",
 404                                                         s, TFC_U(TFC_BLKSIZE));
 405                                                 if ((xtsblocks * TF_BLOCK_SIZE) > TFC_BLKSIZE) xerror(NO, YES, YES,
 406                                                         "%s: nr of blocks per xts block exceeds %u bytes",
 407                                                         s, TFC_U(TFC_BLKSIZE));
 408                                         }
 409                                         else if (!strncmp(s, "iseek", 5) && *(s+5) == '=') {
 410                                                 s += 6;
 411                                                 iseek = tfc_humanfsize(s, &stoi);
 412                                                 if (!str_empty(stoi)) {
 413                                                         iseek = tfc_fnamesize(s, YES);
 414                                                         iseek = tfc_modifysize(iseek, strchr(s, ':'));
 415                                                         if (iseek == NOFSIZE) xerror(NO, YES, YES,
 416                                                         "%s: invalid iseek value", s);
 417                                                 }
 418                                                 else iseek = tfc_modifysize(iseek, strchr(s, ':'));
 419                                                 if (do_edcrypt != TFC_DO_PLAIN && iseek % TF_BLOCK_SIZE)
 420                                                         xerror(NO, YES, YES,
 421                                                                 "%s: not round to TF block size "
 422                                                                 "of %u bytes",
 423                                                                 s, TFC_U(TF_BLOCK_SIZE));
 424                                                 iseek_blocks = iseek / TF_BLOCK_SIZE;
 425                                         }
 426                                         else if (!strncmp(s, "ixseek", 6) && *(s+6) == '=') {
 427                                                 s += 7;
 428                                                 iseek = tfc_humanfsize(s, &stoi);
 429                                                 if (!str_empty(stoi)) {
 430                                                         iseek = tfc_fnamesize(s, YES);
 431                                                         iseek = tfc_modifysize(iseek, strchr(s, ':'));
 432                                                         if (iseek == NOFSIZE) xerror(NO, YES, YES,
 433                                                                 "%s: invalid ixseek value", s);
 434                                                 }
 435                                                 else iseek = tfc_modifysize(iseek, strchr(s, ':'));
 436                                         }
 437                                         else if (!strncmp(s, "ictr", 4) && *(s+4) == '=') {
 438                                                 s += 5;
 439                                                 iseek_blocks = tfc_humanfsize(s, &stoi);
 440                                                 if (!str_empty(stoi)) {
 441                                                         iseek_blocks = tfc_fnamesize(s, YES);
 442                                                         if (iseek_blocks == NOFSIZE)
 443                                                                 xerror(NO, YES, YES,
 444                                                                 "%s: invalid ictr value", s);
 445                                                         iseek_blocks /= TF_BLOCK_SIZE;
 446                                                         iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 447                                                 }
 448                                                 else iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 449                                         }
 450                                         else if (!strncmp(s, "ixctr", 5) && *(s+5) == '=') {
 451                                                 s += 6;
 452                                                 iseek_blocks = tfc_humanfsize(s, &stoi);
 453                                                 if (!str_empty(stoi)) {
 454                                                         iseek_blocks = tfc_fnamesize(s, YES);
 455                                                         iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 456                                                         if (iseek_blocks == NOFSIZE)
 457                                                                 xerror(NO, YES, YES,
 458                                                                 "%s: invalid ixctr value", s);
 459                                                 }
 460                                                 else iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 461                                                 if (iseek_blocks % TF_BLOCK_SIZE)
 462                                                         xerror(NO, YES, YES,
 463                                                         "%s: not round to TF block size "
 464                                                         "of %u bytes", s, TFC_U(TF_BLOCK_SIZE));
 465                                                 iseek_blocks /= TF_BLOCK_SIZE;
 466                                         }
 467                                         else if (!strncmp(s, "oseek", 5) && *(s+5) == '=') {
 468                                                 s += 6;
 469                                                 oseek = tfc_humanfsize(s, &stoi);
 470                                                 if (!str_empty(stoi)) {
 471                                                         oseek = tfc_fnamesize(s, YES);
 472                                                         oseek = tfc_modifysize(oseek, strchr(s, ':'));
 473                                                         if (oseek == NOFSIZE) xerror(NO, YES, YES,
 474                                                         "%s: invalid oseek value", s);
 475                                                 }
 476                                                 else oseek = tfc_modifysize(oseek, strchr(s, ':'));
 477                                         }
 478                                         else if (!strncmp(s, "ioseek", 6) && *(s+6) == '=') {
 479                                                 s += 7;
 480
 481                                                 iseek = tfc_humanfsize(s, &stoi);
 482                                                 if (!str_empty(stoi)) {
 483                                                         iseek = tfc_fnamesize(s, YES);
 484                                                         iseek = tfc_modifysize(iseek, strchr(s, ':'));
 485                                                         if (iseek == NOFSIZE) xerror(NO, YES, YES,
 486                                                         "%s: invalid iseek value", s);
 487                                                 }
 488                                                 else iseek = tfc_modifysize(iseek, strchr(s, ':'));
 489                                                 if (do_edcrypt != TFC_DO_PLAIN && iseek % TF_BLOCK_SIZE)
 490                                                         xerror(NO, YES, YES,
 491                                                                 "%s: not round to TF block size "
 492                                                                 "of %u bytes",
 493                                                                 s, TFC_U(TF_BLOCK_SIZE));
 494                                                 iseek_blocks = iseek / TF_BLOCK_SIZE;
 495
 496                                                 oseek = tfc_humanfsize(s, &stoi);
 497                                                 if (!str_empty(stoi)) {
 498                                                         oseek = tfc_fnamesize(s, YES);
 499                                                         oseek = tfc_modifysize(oseek, strchr(s, ':'));
 500                                                         if (oseek == NOFSIZE) xerror(NO, YES, YES,
 501                                                         "%s: invalid oseek value", s);
 502                                                 }
 503                                                 else oseek = tfc_modifysize(oseek, strchr(s, ':'));
 504                                         }
 505                                         else if (!strncmp(s, "count", 5) && *(s+5) == '=') {
 506                                                 s += 6;
 507                                                 maxlen = tfc_humanfsize(s, &stoi);
 508                                                 if (!str_empty(stoi)) {
 509                                                         maxlen = tfc_fnamesize(s, YES);
 510                                                         maxlen = tfc_modifysize(maxlen, strchr(s, ':'));
 511                                                         if (maxlen == NOFSIZE) xerror(NO, YES, YES,
 512                                                         "%s: invalid count value", s);
 513                                                 }
 514                                                 else maxlen = tfc_modifysize(maxlen, strchr(s, ':'));
 515                                                 if (counter_opt == TFC_CTR_HEAD)
 516                                                         maxlen += TF_BLOCK_SIZE;
 517                                         }
 518                                         else if (!strncmp(s, "ftrunc", 6) && *(s+6) == '=') {
 519                                                 s += 7;
 520                                                 if (!strcmp(s, "tail")) {
 521                                                         do_ftrunc = TFC_FTRUNC_TAIL;
 522                                                         ftrunc_dfd = NOFSIZE;
 523                                                 }
 524                                                 else {
 525                                                         do_ftrunc = TFC_DO_FTRUNC;
 526                                                         ftrunc_dfd = tfc_humanfsize(s, &stoi);
 527                                                         if (!str_empty(stoi)) {
 528                                                                 ftrunc_dfd = tfc_fnamesize(s, YES);
 529                                                                 ftrunc_dfd = tfc_modifysize(ftrunc_dfd, strchr(s, ':'));
 530                                                                 if (ftrunc_dfd == NOFSIZE) xerror(NO, YES, YES,
 531                                                                 "%s: invalid ftrunc value", s);
 532                                                         }
 533                                                         else ftrunc_dfd = tfc_modifysize(ftrunc_dfd, strchr(s, ':'));
 534                                                 }
 535                                         }
 536                                         else if (!strncmp(s, "xkey", 4) && *(s+4) == '=') {
 537                                                 s += 5;
 538                                                 maxkeylen = tfc_humanfsize(s, &stoi);
 539                                                 if (!str_empty(stoi)) {
 540                                                         maxkeylen = tfc_fnamesize(s, YES);
 541                                                         maxkeylen = tfc_modifysize(maxkeylen, strchr(s, ':'));
 542                                                         if (maxkeylen == NOSIZE)
 543                                                                 xerror(NO, YES, YES,
 544                                                                 "%s: invalid key length value", s);
 545                                                 }
 546                                                 else maxkeylen = tfc_modifysize(maxkeylen, strchr(s, ':'));
 547                                         }
 548                                         else if (!strncmp(s, "okey", 4) && *(s+4) == '=') {
 549                                                 s += 5;
 550                                                 keyoffset = tfc_humanfsize(s, &stoi);
 551                                                 if (!str_empty(stoi)) {
 552                                                         keyoffset = tfc_fnamesize(s, YES);
 553                                                         keyoffset = tfc_modifysize(keyoffset, strchr(s, ':'));
 554                                                         if (keyoffset == NOFSIZE)
 555                                                                 xerror(NO, YES, YES,
 556                                                                 "%s: invalid key offset value", s);
 557                                                 }
 558                                                 else keyoffset = tfc_modifysize(keyoffset, strchr(s, ':'));
 559                                         }
 560                                         else if (!strncmp(s, "xctr", 4) && *(s+4) == '=') {
 561                                                 s += 5;
 562                                                 ctrsz = tfc_humanfsize(s, &stoi);
 563                                                 if (!str_empty(stoi)) {
 564                                                         ctrsz = (size_t)tfc_fnamesize(s, YES);
 565                                                         ctrsz = (size_t)tfc_modifysize((tfc_fsize)ctrsz, strchr(s, ':'));
 566                                                         if (ctrsz == NOSIZE)
 567                                                                 xerror(NO, YES, YES,
 568                                                                 "%s: invalid counter length value", s);
 569                                                 }
 570                                                 else ctrsz = (size_t)tfc_modifysize((tfc_fsize)ctrsz, strchr(s, ':'));
 571                                                 if (ctrsz > TF_BLOCK_SIZE)
 572                                                         xerror(NO, YES, YES, "%s: counter size cannot exceed TF block size", s);
 573                                         }
 574                                         else xerror(NO, YES, YES, "invalid option %s", s);
 575                                 }
 576                                 break;
 577                         case 'S':
 578                                 do_mac = TFC_MAC_SIGN;
 579                                 if (strcasecmp(optarg, "mac") != 0)
 580                                         do_mac_file = optarg;
 581                                 break;
 582                         case 'M':
 583                                 do_mac = TFC_MAC_VRFY;
 584                                 if (!strcasecmp(optarg, "drop"))
 585                                         do_mac = TFC_MAC_DROP;
 586                                 else if (strcasecmp(optarg, "mac") != 0)
 587                                         do_mac_file = optarg;
 588                                 break;
 589                         case 'm':
 590                         case 'u':
 591                                 if (do_mac != TFC_MAC_VRFY)
 592                                         xerror(NO, YES, YES, "signature source was not specified");
 593                                 do_mac = TFC_MAC_JUST_VRFY;
 594                                 if (c == 'u') do_mac = TFC_MAC_JUST_VRFY2;
 595                                 break;
 596                         case 'R':
 597                         case 'Z':
 598                                 if (maxlen != NOFSIZE) {
 599                                         if (c == 'Z') genzero_nr_bytes = maxlen;
 600                                         else genrandom_nr_bytes = maxlen;
 601                                 }
 602                                 else {
 603                                         tfc_fsize t;
 604                                         if (!strcasecmp(optarg, "cbs"))
 605                                                 t = TF_BLOCK_SIZE;
 606                                         else if (!strcasecmp(optarg, "ks"))
 607                                                 t = TF_FROM_BITS(TFC_KEY_BITS);
 608                                         else if (!strcasecmp(optarg, "xks"))
 609                                                 t = TF_FROM_BITS(TFC_KEY_BITS) * 2;
 610                                         else if (!strcasecmp(optarg, "iobs"))
 611                                                 t = blksize;
 612                                         else {
 613                                                 t = tfc_humanfsize(optarg, &stoi);
 614                                                 if (!str_empty(stoi)) {
 615                                                         t = tfc_fnamesize(optarg, NO);
 616                                                         t = tfc_modifysize(t, strchr(optarg, ':'));
 617                                                 }
 618                                                 else t = tfc_modifysize(t, strchr(optarg, ':'));
 619                                         }
 620                                         if (c == 'Z') genzero_nr_bytes = maxlen = t;
 621                                         else genrandom_nr_bytes = maxlen = t;
 622                                 }
 623                                 break;
 624                         case 'a':
 625                                 do_preserve_time = YES;
 626                                 break;
 627                         case 'A':
 628                                 do_outfmt = TFC_OUTFMT_B64;
 629                                 break;
 630                         case 'W':
 631                                 do_outfmt = TFC_OUTFMT_RAW;
 632                                 break;
 633                         case 'H':
 634                                 do_outfmt = TFC_OUTFMT_HEX;
 635                                 break;
 636                         case 'q':
 637                                 quiet = YES;
 638                                 xexit_no_nl = YES;
 639                                 verbose = NO;
 640                                 do_full_hexdump = NO;
 641                                 status_timer = 0;
 642                                 break;
 643                         case 'v':
 644                                 verbose = YES;
 645                                 break;
 646                         case 'V':
 647                                 td = strtod(optarg, &stoi);
 648                                 status_timer = TFC_DTOUSECS(td);
 649                                 if (status_timer <= TFC_DTOUSECS(0) || !str_empty(stoi)) status_timer = 0;
 650                                 break;
 651                         default:
 652                                 usage();
 653                                 break;
 654                 }
 655         }
 656
 657         if (!strcmp(progname, "tfbench")) {
 658                 if (!*(argv+optind)) usage();
 659
 660                 td = strtod(*(argv+optind), &stoi);
 661                 if (td <= TFC_DTOUSECS(0) || !str_empty(stoi))
 662                         xerror(NO, YES, YES,
 663                         "%s: invalid benchmark time in seconds", *(argv+optind));
 664                 bench_timer = TFC_DTOUSECS(td);
 665                 do_benchmark(bench_timer, td);
 666         }
 667         if (genrandom_nr_bytes) {
 668                 ctr_mode = TFC_MODE_STREAM;
 669                 do_edcrypt = TFC_DO_ENCRYPT;
 670                 gen_write_bytes(*(argv+optind), oseek, genrandom_nr_bytes);
 671         }
 672         if (genzero_nr_bytes) {
 673                 ctr_mode = TFC_MODE_PLAIN;
 674                 do_edcrypt = TFC_DO_PLAIN;
 675                 gen_write_bytes(*(argv+optind), oseek, genzero_nr_bytes);
 676         }
 677
 678         if (rawkey && password)
 679                 xerror(NO, YES, YES, "Cannot use rawkey and hashing password!");
 680         if (do_edcrypt == TFC_DO_ENCRYPT && do_mac >= TFC_MAC_VRFY)
 681                 xerror(NO, YES, YES, "Cannot encrypt and verify signature!");
 682         if (do_edcrypt == TFC_DO_DECRYPT && do_mac == TFC_MAC_SIGN)
 683                 xerror(NO, YES, YES, "Cannot decrypt and calculate signature!");
 684         if (do_edcrypt == TFC_DO_DECRYPT && counter_opt == TFC_CTR_RAND)
 685                 xerror(NO, YES, YES, "Cannot decrypt and embed a generated CTR into file!");
 686         if (do_edcrypt == TFC_DO_ENCRYPT && counter_opt == TFC_CTR_HEAD)
 687                 xerror(NO, YES, YES, "Cannot encrypt and read CTR from source!");
 688         if (overwrite_source && counter_opt == TFC_CTR_RAND)
 689                 xerror(NO, YES, YES, "Cannot embed a CTR into file when overwriting it!");
 690         if (do_edcrypt == TFC_DO_PLAIN
 691         && (do_mac || saltf || rawkey || mackey_opt || counter_opt || counter_file))
 692                 xerror(NO, YES, YES, "Encryption facility is disabled when in plain IO mode.");
 693
 694         errno = 0;
 695         do_stop = NO;
 696
 697         if (saltf) {
 698                 int saltfd;
 699
 700                 memset(tfc_salt, 0, TFC_MAX_SALT);
 701                 tfc_saltsz = 0;
 702                 if (!strcasecmp(saltf, "disable")) goto _nosalt;
 703
 704                 if (!strcmp(saltf, "-")) saltfd = 0;
 705                 else saltfd = xopen(saltf, O_RDONLY | O_LARGEFILE);
 706                 lio = xread(saltfd, tfc_salt, TFC_MAX_SALT - TF_FROM_BITS(TFC_KEY_BITS));
 707                 if (lio == NOSIZE) xerror(NO, NO, YES, "%s", saltf);
 708                 tfc_saltsz = lio;
 709                 xclose(saltfd);
 710         }
 711
 712 _nosalt:
 713         if (mackey_opt == TFC_MACKEY_FILE && mackeyf) {
 714                 int mkfd = -1;
 715                 tfc_yesno do_stop;
 716
 717                 if (!strcmp(mackeyf, "-")) mkfd = 0;
 718                 else mkfd = xopen(mackeyf, O_RDONLY | O_LARGEFILE);
 719
 720                 skein_init(&sk, TFC_KEY_BITS);
 721
 722                 do_stop = NO;
 723                 while (1) {
 724                         if (do_stop) break;
 725                         pblk = tmpdata;
 726                         ldone = 0;
 727                         lrem = lblock = sizeof(tmpdata);
 728                         if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(mkfd);
 729 _mkragain:              lio = xread(mkfd, pblk, lrem);
 730                         if (lio == 0 && do_stop == NO) do_stop = YES;
 731                         if (lio != NOSIZE) ldone += lio;
 732                         else {
 733                                 if (errno != EIO && catch_all_errors != YES)
 734                                         xerror(NO, NO, NO, "%s", mackeyf);
 735                                 switch (error_action) {
 736                                         case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", mackeyf); goto _mkragain; break;
 737                                         case TFC_ERRACT_SYNC:
 738                                         case TFC_ERRACT_LSYNC:
 739                                                 xerror(YES, NO, NO, "%s", mackeyf);
 740                                                 lio = ldone = lrem = lblock;
 741                                                 memset(tmpdata, 0, lio);
 742                                                 if (rdpos == NOFSIZE) lseek(mkfd, lio, SEEK_CUR);
 743                                                 else lseek(mkfd, rdpos + lio, SEEK_SET);
 744                                                 break;
 745                                         default: xerror(NO, NO, NO, "%s", mackeyf); break;
 746                                 }
 747                         }
 748                         if (lio && lio < lrem) {
 749                                 pblk += lio;
 750                                 lrem -= lio;
 751                                 goto _mkragain;
 752                         }
 753
 754                         skein_update(&sk, tmpdata, ldone);
 755                 }
 756
 757                 skein_final(mackey, &sk);
 758
 759                 xclose(mkfd);
 760         }
 761         else if (mackey_opt == TFC_MACKEY_PASSWORD) {
 762                 memset(&getps, 0, sizeof(struct getpasswd_state));
 763                 getps.fd = getps.efd = -1;
 764                 getps.passwd = pwdask;
 765                 getps.pwlen = sizeof(pwdask)-1;
 766                 getps.echo = mac_pw_prompt ? mac_pw_prompt : "Enter MAC password: ";
 767                 getps.charfilter = (show_secrets == YES) ? getps_plain_filter : getps_filter;
 768                 getps.maskchar = (show_secrets == YES) ? 0 : 'x';
 769                 getps.flags = GETP_WAITFILL;
 770                 n = xgetpasswd(&getps);
 771                 if (n == NOSIZE) xerror(NO, NO, YES, "getting MAC password");
 772                 if (n == ((size_t)-2)) xexit(1);
 773                 if (verbose) say_hint(pwdask, n, "MAC password hint");
 774                 skein(mackey, TF_MAX_BITS, NULL, pwdask, n);
 775         }
 776
 777
 778         if ((strlen(progname) <= 9)
 779         && ((!strcmp(progname, "sksum"))
 780         || ((!memcmp(progname, "sk", 2))
 781         && (!memcmp(progname+3, "sum", 3)
 782         || !memcmp(progname+4, "sum", 3)
 783         || !memcmp(progname+5, "sum", 3)
 784         || !memcmp(progname+6, "sum", 3)))))
 785                 do_sksum(progname, argv+optind);
 786         if (!strcmp(progname, "base64")) do_edbase64(argv+optind);
 787
 788         idx = optind;
 789
 790         if (argv[idx]) {
 791                 if ((do_edcrypt == TFC_DO_PLAIN && ctr_mode == TFC_MODE_PLAIN)
 792                 || password
 793                 || rawkey > TFC_RAWKEY_KEYFILE) goto _nokeyfd;
 794                 if (!strcmp(argv[idx], "-")) kfd = 0;
 795                 else kfd = xopen(argv[idx], O_RDONLY | O_LARGEFILE);
 796
 797                 if (do_edcrypt == TFC_DO_PLAIN && ctr_mode == TFC_MODE_XOR) {
 798                         /* out: don't erase kfname if xor */
 799                         idx++;
 800                         goto _nokeyfd;
 801                 }
 802
 803                 lio = strnlen(argv[idx], PATH_MAX);
 804                 memset(argv[idx], '*', lio);
 805
 806                 idx++;
 807         }
 808         else password = YES;
 809
 810         errno = 0;
 811         if (do_full_key == NO && tweakf) {
 812                 int twfd;
 813
 814                 if (!strcmp(tweakf, "-")) twfd = 0;
 815                 else twfd = open(tweakf, O_RDONLY | O_LARGEFILE);
 816                 if (twfd == -1) xerror(NO, NO, YES, "%s", tweakf);
 817                 lio = ldone = xread(twfd, tweak, TF_TWEAK_SIZE);
 818                 if (lio == NOSIZE) xerror(NO, NO, YES, "%s", tweakf);
 819                 if (ldone < TF_TWEAK_SIZE)
 820                         xerror(NO, NO, YES, "%s: %zu bytes tweak required", tweakf, TF_TWEAK_SIZE);
 821                 xclose(twfd);
 822         }
 823
 824 _nokeyfd:
 825         errno = 0;
 826         if (argv[idx]) {
 827                 if (!strcmp(argv[idx], "-") && kfd) sfd = 0;
 828                 else {
 829                         sfd = xopen(argv[idx], O_RDONLY | O_LARGEFILE);
 830                         if (do_preserve_time) if (fstat(sfd, &s_stat) == -1)
 831                                 xerror(YES, NO, YES, "stat(%s)", argv[idx]);
 832                 }
 833
 834                 if ((do_mac >= TFC_MAC_VRFY || do_mac <= TFC_MAC_DROP) && !do_mac_file) {
 835                         maxlen = tfc_fdsize(sfd);
 836                         if (maxlen == NOFSIZE)
 837                                 xerror(NO, YES, YES,
 838                                 "Cannot verify embedded MAC with non-seekable source!");
 839                         maxlen -= TF_FROM_BITS(macbits);
 840                 }
 841                 srcfname = argv[idx];
 842                 idx++;
 843         }
 844
 845         if (!do_mac_file && (do_mac >= TFC_MAC_VRFY && sfd == 0))
 846                 xerror(NO, YES, YES, "Cannot verify embedded MAC with non-seekable source!");
 847
 848         if (ctrsz == NOSIZE) ctrsz = TF_BLOCK_SIZE;
 849         if (ctrsz > TF_BLOCK_SIZE) ctrsz = TF_BLOCK_SIZE;
 850
 851         if (ctr_mode == TFC_MODE_ECB) goto _ctrskip1;
 852         errno = 0;
 853         if (counter_file) {
 854                 int ctrfd;
 855
 856                 if (!strcmp(counter_file, "-")) ctrfd = 0;
 857                 else ctrfd = xopen(counter_file, O_RDONLY | O_LARGEFILE);
 858                 lio = xread(ctrfd, ctr, ctrsz);
 859                 if (lio == NOSIZE) xerror(NO, NO, YES, "%s", counter_file);
 860                 if (lio < ctrsz) xerror(NO, YES, YES, "counter file is too small (%zu)!", lio);
 861                 xclose(ctrfd);
 862         }
 863         else if (counter_opt == TFC_CTR_HEAD) {
 864                 pblk = ctr;
 865                 ldone = 0;
 866                 lrem = lblock = ctrsz;
 867                 if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(sfd);
 868 _ctrragain:     lio = xread(sfd, pblk, lrem);
 869                 if (lio != NOSIZE) ldone += lio;
 870                 else {
 871                         if (errno != EIO && catch_all_errors != YES)
 872                                 xerror(NO, NO, NO, "%s", srcfname);
 873                         switch (error_action) {
 874                                 case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", srcfname); goto _ctrragain; break;
 875                                 case TFC_ERRACT_SYNC:
 876                                 case TFC_ERRACT_LSYNC:
 877                                         xerror(YES, NO, NO, "%s", srcfname);
 878                                         lio = ldone = lrem = lblock;
 879                                         memset(ctr, 0, lio);
 880                                         if (rdpos == NOFSIZE) lseek(sfd, lio, SEEK_CUR);
 881                                         else lseek(sfd, rdpos + lio, SEEK_SET);
 882                                         break;
 883                                 default: xerror(NO, NO, NO, "%s", srcfname); break;
 884                         }
 885                 }
 886                 if (lio && lio < lrem) {
 887                         pblk += lio;
 888                         lrem -= lio;
 889                         goto _ctrragain;
 890                 }
 891                 total_processed_src += ldone;
 892         }
 893
 894 _ctrskip1:
 895         if (iseek) {
 896                 if (counter_opt == TFC_CTR_HEAD && ctr_mode != TFC_MODE_ECB)
 897                         iseek += ctrsz;
 898                 if (lseek(sfd, iseek, SEEK_SET) == -1)
 899                         xerror(ignore_seek_errors, NO, NO, "%s: seek failed", srcfname);
 900         }
 901
 902         if (do_edcrypt == TFC_DO_PLAIN) goto _plain;
 903
 904         if (verbose) tfc_esay("%s: hashing password", tfc_format_pid(progname));
 905
 906         if (rawkey == TFC_RAWKEY_KEYFILE) {
 907                 tfc_yesno xtskeyset = NO;
 908
 909                 pblk = key;
 910 _xts2key:       ldone = 0;
 911                 lrem = lblock = TF_FROM_BITS(TFC_KEY_BITS);
 912                 if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(kfd);
 913 _keyragain:     lio = xread(kfd, pblk, lrem);
 914                 if (lio != NOSIZE) ldone += lio;
 915                 else {
 916                         if (errno != EIO && catch_all_errors != YES)
 917                                 xerror(NO, NO, NO, "reading key");
 918                         switch (error_action) {
 919                                 case TFC_ERRACT_CONT: xerror(YES, NO, NO, "reading key"); goto _keyragain; break;
 920                                 case TFC_ERRACT_SYNC:
 921                                 case TFC_ERRACT_LSYNC:
 922                                         xerror(YES, NO, NO, "reading key");
 923                                         lio = ldone = lrem = lblock;
 924                                         memset(key, 0, lio);
 925                                         if (rdpos == NOFSIZE) lseek(kfd, lio, SEEK_CUR);
 926                                         else lseek(kfd, rdpos + lio, SEEK_SET);
 927                                         break;
 928                                 default: xerror(NO, NO, NO, "reading key"); break;
 929                         }
 930                 }
 931                 if (lio && lio < lrem) {
 932                         pblk += lio;
 933                         lrem -= lio;
 934                         goto _keyragain;
 935                 }
 936                 if (ldone < lblock) xerror(NO, YES, YES, "rawkey too small! (%zu)", ldone);
 937
 938                 if (ctr_mode == TFC_MODE_XTS) {
 939                         if (xtskeyset == NO) {
 940                                 pblk = xtskey;
 941                                 xtskeyset = YES;
 942                                 goto _xts2key;
 943                         }
 944                 }
 945         }
 946         else if (rawkey == TFC_RAWKEY_ASKSTR) {
 947                 tfc_yesno xtskeyset = NO;
 948
 949                 pblk = key; n = sizeof(key);
 950 _xts2keyaskstr: memset(&getps, 0, sizeof(struct getpasswd_state));
 951                 getps.fd = getps.efd = -1;
 952                 getps.passwd = (char *)pblk;
 953                 getps.pwlen = n;
 954                 getps.echo = pw_prompt ? pw_prompt : "Enter rawkey (str): ";
 955                 getps.charfilter = (show_secrets == YES) ? getps_plain_filter : getps_filter;
 956                 getps.maskchar = (show_secrets == YES) ? 0 : 'x';
 957                 getps.flags = GETP_WAITFILL;
 958                 n = xgetpasswd(&getps);
 959                 if (n == NOSIZE) xerror(NO, NO, YES, "getting string rawkey");
 960                 if (n == ((size_t)-2)) xexit(1);
 961                 if (verbose) say_hint(pblk, n, "Raw string key hint");
 962                 if (ctr_mode == TFC_MODE_XTS) {
 963                         if (xtskeyset == NO) {
 964                                 pblk = xtskey; n = sizeof(xtskey);
 965                                 xtskeyset = YES;
 966                                 goto _xts2keyaskstr;
 967                         }
 968                 }
 969         }
 970         else if (rawkey == TFC_RAWKEY_ASKHEX) {
 971                 tfc_yesno xtskeyset = NO;
 972
 973                 pblk = key;
 974 _rawkey_hex_again:
 975                 memset(&getps, 0, sizeof(struct getpasswd_state));
 976                 getps.fd = getps.efd = -1;
 977                 getps.passwd = pwdask;
 978                 getps.pwlen = (TF_FROM_BITS(TFC_KEY_BITS)*2);
 979                 getps.echo = pw_prompt ? pw_prompt : "Enter rawkey (hex): ";
 980                 getps.charfilter = (show_secrets == YES) ? getps_plain_hex_filter : getps_hex_filter;
 981                 getps.maskchar = (show_secrets == YES) ? 0 : 'x';
 982                 getps.flags = GETP_WAITFILL;
 983                 n = xgetpasswd(&getps);
 984                 if (n == NOSIZE) xerror(NO, NO, YES, "getting hex rawkey");
 985                 if (n == ((size_t)-2)) xexit(1);
 986                 if (n % 2) {
 987                         tfc_esay("Please input even number of hex digits!");
 988                         goto _rawkey_hex_again;
 989                 }
 990                 hex2bin(pblk, pwdask);
 991                 memset(pwdask, 0, sizeof(pwdask));
 992                 if (verbose) say_hint(pblk, n/2, "Raw hex key hint");
 993                 if (ctr_mode == TFC_MODE_XTS) {
 994                         if (xtskeyset == NO) {
 995                                 pblk = xtskey;
 996                                 xtskeyset = YES;
 997                                 goto _rawkey_hex_again;
 998                         }
 999                 }
1000         }
1001         else if (password) {
1002 _pwdagain:      memset(&getps, 0, sizeof(struct getpasswd_state));
1003                 getps.fd = getps.efd = -1;
1004                 getps.passwd = pwdask;
1005                 getps.pwlen = sizeof(pwdask)-1;
1006                 getps.echo = pw_prompt ? pw_prompt : "Enter password: ";
1007                 getps.charfilter = (show_secrets == YES) ? getps_plain_filter : getps_filter;
1008                 getps.maskchar = (show_secrets == YES) ? 0 : 'x';
1009                 getps.flags = GETP_WAITFILL;
1010                 n = xgetpasswd(&getps);
1011                 if (n == NOSIZE) xerror(NO, NO, YES, "getting password");
1012                 if (n == ((size_t)-2)) xexit(1);
1013                 if (do_edcrypt == TFC_DO_ENCRYPT && no_repeat == NO) {
1014                         getps.fd = getps.efd = -1;
1015                         getps.passwd = pwdagain;
1016                         getps.pwlen = sizeof(pwdagain)-1;
1017                         getps.echo = "Enter it again: ";
1018                         getps.flags = GETP_WAITFILL;
1019                         n = xgetpasswd(&getps);
1020                         if (n == NOSIZE) xerror(NO, NO, YES, "getting password again");
1021                         if (n == ((size_t)-2)) xexit(1);
1022                         if (strncmp(pwdask, pwdagain, sizeof(pwdagain)-1) != 0) {
1023                                 tfc_esay("Passwords are different, try again");
1024                                 goto _pwdagain;
1025                         }
1026                 }
1027                 if (verbose) say_hint(pwdask, n, "Password hint");
1028                 skein(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, pwdask, n);
1029                 memset(pwdask, 0, sizeof(pwdask));
1030                 memset(pwdagain, 0, sizeof(pwdagain));
1031         }
1032         else {
1033                 if (skeinfd(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, kfd, keyoffset, maxkeylen) != YES)
1034                         xerror(NO, NO, YES, "hashing key");
1035         }
1036
1037         if (rawkey == NO) {
1038                 if (tfc_saltsz > 0) {
1039                         memcpy(tfc_salt+tfc_saltsz, key, TF_FROM_BITS(TFC_KEY_BITS));
1040                         skein(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, tfc_salt, tfc_saltsz+TF_FROM_BITS(TFC_KEY_BITS));
1041                 }
1042                 if (nr_turns > 1) for (x = 0; x < nr_turns; x++)
1043                         skein(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
1044                 memset(tfc_salt, 0, TFC_MAX_SALT);
1045         }
1046
1047         if (ctr_mode == TFC_MODE_XTS && rawkey == NO) {
1048                 skein(xtskey, TF_NR_KEY_BITS, mackey_opt ? mackey : NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
1049         }
1050
1051         if (genkeyf) {
1052                 int krfd;
1053                 tfc_yesno xtskeyset = NO;
1054
1055                 pblk = key;
1056                 if (!strcmp(genkeyf, "-")) krfd = 1;
1057                 else krfd = xopen(genkeyf, O_WRONLY | O_CREAT | O_LARGEFILE | write_flags);
1058 _xts2genkey:    if (xwrite(krfd, pblk, TF_FROM_BITS(TFC_KEY_BITS)) == NOSIZE) xerror(NO, NO, YES, "%s", genkeyf);
1059                 if (do_fsync && fsync(krfd) == -1) xerror(NO, NO, YES, "%s", genkeyf);
1060                 if (verbose && xtskeyset == NO) {
1061                         tfc_esay("%s: password hashing done", tfc_format_pid(progname));
1062                         tfc_esay("%s: rawkey written to %s.", tfc_format_pid(progname), genkeyf);
1063                         tfc_esay("%s: Have a nice day!", tfc_format_pid(progname));
1064                 }
1065
1066                 if (ctr_mode == TFC_MODE_XTS) {
1067                         if (xtskeyset == NO) {
1068                                 pblk = xtskey;
1069                                 xtskeyset = YES;
1070                                 goto _xts2genkey;
1071                         }
1072                 }
1073
1074                 fchmod(krfd, 0600);
1075                 xclose(krfd);
1076                 xexit(0);
1077         }
1078
1079         if (do_mac != NO) {
1080                 if (mackey_opt == TFC_MACKEY_RAWKEY) skein(mackey, TF_MAX_BITS, key, key, TF_FROM_BITS(TFC_KEY_BITS));
1081                 if (verbose) tfc_esay("%s: doing MAC calculation, processing speed "
1082                         "will be slower.", tfc_format_pid(progname));
1083                 if (mackey_opt) skein_init_key(&sk, mackey, macbits);
1084                 else skein_init(&sk, macbits);
1085         }
1086
1087         if (!counter_file && counter_opt <= TFC_CTR_SHOW && ctr_mode != TFC_MODE_ECB) {
1088                 skein(ctr, TF_TO_BITS(ctrsz), mackey_opt ? mackey : NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
1089         }
1090
1091         tf_convkey(key);
1092         if (ctr_mode == TFC_MODE_XTS) tf_convkey(xtskey);
1093         if (do_full_key == NO) {
1094                 if (!tweakf) skein(tweak, TF_NR_TWEAK_BITS, NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
1095                 tf_tweak_set(key, tweak);
1096         }
1097         if (ctr_mode == TFC_MODE_ECB) goto _ctrskip2;
1098
1099         if (counter_opt == TFC_CTR_ZERO) memset(ctr, 0, ctrsz);
1100
1101         tfc_data_to_words64(&iseek_blocks, sizeof(iseek_blocks));
1102         tf_ctr_set(ctr, &iseek_blocks, sizeof(iseek_blocks));
1103         if (do_mac == TFC_MAC_JUST_VRFY2) memcpy(svctr, ctr, TF_BLOCK_SIZE);
1104
1105         if (counter_opt == TFC_CTR_SHOW) {
1106                 switch (do_outfmt) {
1107                         case TFC_OUTFMT_B64: tfc_printbase64(stderr, ctr, ctrsz, YES); break;
1108                         case TFC_OUTFMT_RAW: xwrite(2, ctr, ctrsz); break;
1109                         case TFC_OUTFMT_HEX: mehexdump(ctr, ctrsz, ctrsz, YES); break;
1110                 }
1111         }
1112         else if (counter_opt == TFC_CTR_RAND) tfc_getrandom(ctr, ctrsz);
1113
1114 _ctrskip2:
1115         if (kfd != -1) {
1116                 xclose(kfd);
1117                 kfd = -1;
1118         }
1119         if (verbose) tfc_esay("%s: password hashing done", tfc_format_pid(progname));
1120
1121         if (overwrite_source && srcfname) argv[idx] = srcfname;
1122
1123 _plain:
1124         if (argv[idx]) {
1125                 if (!strcmp(argv[idx], "-")) dfd = 1;
1126                 else dfd = xxopen(YES, argv[idx], O_RDWR | O_LARGEFILE | write_flags);
1127                 if (dfd == -1) dfd = xopen(argv[idx], O_WRONLY | O_CREAT | O_LARGEFILE | write_flags);
1128                 dstfname = argv[idx];
1129                 idx++;
1130         }
1131
1132         if (oseek) {
1133                 if (lseek(dfd, oseek, SEEK_SET) == -1)
1134                         xerror(ignore_seek_errors, NO, NO, "%s: seek failed", dstfname);
1135         }
1136
1137         for (x = 1; x < NSIG; x++) signal(x, SIG_IGN);
1138         memset(&sigact, 0, sizeof(sigact));
1139         sigact.sa_flags = SA_RESTART;
1140         sigact.sa_handler = print_crypt_status;
1141         sigaction(SIGUSR1, &sigact, NULL);
1142         sigaction(SIGALRM, &sigact, NULL);
1143         if (status_timer) setup_next_alarm(status_timer > 1000000 ? 1000000 : status_timer);
1144         sigact.sa_handler = change_status_width;
1145         sigaction(SIGQUIT, &sigact, NULL);
1146         sigact.sa_handler = change_status_timer;
1147         sigaction(SIGUSR2, &sigact, NULL);
1148         if (quiet == NO) {
1149                 sigact.sa_handler = print_crypt_status;
1150                 sigaction(SIGINT, &sigact, NULL);
1151                 sigaction(SIGTERM, &sigact, NULL);
1152                 sigaction(SIGTSTP, &sigact, NULL);
1153         }
1154         else {
1155                 sigact.sa_handler = exit_sigterm;
1156                 sigaction(SIGINT, &sigact, NULL);
1157                 sigaction(SIGTERM, &sigact, NULL);
1158                 sigact.sa_handler = handle_sigtstp;
1159                 sigaction(SIGTSTP, &sigact, NULL);
1160         }
1161         memset(&sigact, 0, sizeof(struct sigaction));
1162
1163         tfc_getcurtime(&delta_time);
1164
1165         errno = 0;
1166         if (counter_opt == TFC_CTR_RAND && ctr_mode != TFC_MODE_ECB) {
1167                 pblk = ctr;
1168                 lio = lrem = ctrsz;
1169                 ldone = 0;
1170 _ctrwagain:     lio = xwrite(dfd, pblk, lrem);
1171                 if (lio != NOSIZE) ldone += lio;
1172                 else xerror(NO, NO, NO, "%s", dstfname);
1173                 if (do_fsync && fsync(dfd) == -1) xerror(NO, NO, NO, "%s", dstfname);
1174                 if (lio < lrem) {
1175                         pblk += lio;
1176                         lrem -= lio;
1177                         goto _ctrwagain;
1178                 }
1179                 total_written_dst += ldone;
1180                 total_processed_dst += ldone;
1181                 delta_processed += ldone;
1182         }
1183
1184         if (ctr_mode == TFC_MODE_STREAM) tfe_init_iv(&tfe, key, ctr);
1185
1186         if (do_mac == TFC_MAC_JUST_VRFY2) {
1187                 rwd = tfc_fdgetpos(sfd);
1188                 if (rwd == NOFSIZE) {
1189                         tfc_esay("%s: WARNING: input is not seekable, disabling MAC testing mode", tfc_format_pid(progname));
1190                         do_mac = TFC_MAC_VRFY;
1191                 }
1192                 goto _nodecrypt_again_vrfy2;
1193
1194 _decrypt_again_vrfy2:
1195                 if (lseek(sfd, (off_t)rwd, SEEK_SET) == ((off_t)-1)) {
1196                         xerror(ignore_seek_errors, NO, YES, "MAC testing seek failed");
1197                 }
1198                 total_processed_src = rwd;
1199                 memcpy(ctr, svctr, TF_BLOCK_SIZE);
1200                 memset(svctr, 0, TF_BLOCK_SIZE);
1201         }
1202
1203 #define FLFD(x, y) (flipfd ? y : x)
1204 _nodecrypt_again_vrfy2:
1205         loopcnt = 1;
1206         errno = 0;
1207         do_stop = NO;
1208         flipfd = NO;
1209         while (1) {
1210                 if (do_stop) break;
1211                 if (ctr_mode == TFC_MODE_XOR) flipfd = NO;
1212                 pblk = srcblk;
1213 _nextblk:       ldone = 0;
1214                 lrem = lblock = blk_len_adj(maxlen, total_processed_src, blksize);
1215                 if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(FLFD(sfd, kfd));
1216 _ragain:        lio = xread(FLFD(sfd, kfd), pblk, lrem);
1217                 if (lio == 0) {
1218                         if ((do_read_loops != 0 && FLFD(sfd, kfd) != 0) && (loopcnt < do_read_loops)) {
1219                                 lseek(FLFD(sfd, kfd), 0L, SEEK_SET);
1220                                 loopcnt++;
1221                                 goto _ragain;
1222                         }
1223
1224                         do_stop = YES;
1225                 }
1226                 if (lio != NOSIZE) ldone += lio;
1227                 else {
1228                         if (errno != EIO && catch_all_errors != YES)
1229                                 xerror(NO, NO, NO, "%s", srcfname);
1230                         switch (error_action) {
1231                                 case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", srcfname); goto _ragain; break;
1232                                 case TFC_ERRACT_SYNC:
1233                                 case TFC_ERRACT_LSYNC:
1234                                         xerror(YES, NO, NO, "%s", srcfname);
1235                                         lio = ldone = lrem = lblock;
1236                                         memset(srcblk, 0, lio);
1237                                         if (rdpos == NOFSIZE) lseek(FLFD(sfd, kfd), lio, SEEK_CUR);
1238                                         else lseek(FLFD(sfd, kfd), rdpos + lio, SEEK_SET);
1239                                         break;
1240                                 default: xerror(NO, NO, NO, "%s", srcfname); break;
1241                         }
1242                 }
1243                 if (unbuffered == NO && lio && lio < lrem) {
1244                         pblk += lio;
1245                         lrem -= lio;
1246                         goto _ragain;
1247                 }
1248                 total_processed_src += ldone;
1249
1250                 if (do_pad && (ldone % TF_BLOCK_SIZE)) {
1251                         size_t orig = ldone;
1252                         ldone += (TF_BLOCK_SIZE - (ldone % TF_BLOCK_SIZE));
1253                         if (ldone > blksize) ldone = blksize;
1254                         memset(srcblk+orig, 0, sizeof(srcblk)-orig);
1255                 }
1256
1257                 if (ctr_mode == TFC_MODE_XOR && flipfd == NO) {
1258                         if (do_stop) blksize = ldone;
1259                         flipfd = YES;
1260                         pblk = dstblk;
1261                         goto _nextblk;
1262                 }
1263
1264                 if (do_mac == TFC_MAC_SIGN) skein_update(&sk, srcblk, ldone);
1265
1266                 if (ctr_mode == TFC_MODE_CTR) tf_ctr_crypt(key, ctr, dstblk, srcblk, ldone);
1267                 else if (ctr_mode == TFC_MODE_STREAM) tf_stream_crypt(&tfe, dstblk, srcblk, ldone);
1268                 else if (ctr_mode == TFC_MODE_XTS && do_edcrypt == TFC_DO_ENCRYPT)
1269                         tf_xts_encrypt(key, xtskey, ctr, dstblk, srcblk, ldone, xtsblocks);
1270                 else if (ctr_mode == TFC_MODE_XTS && do_edcrypt == TFC_DO_DECRYPT)
1271                         tf_xts_decrypt(key, xtskey, ctr, dstblk, srcblk, ldone, xtsblocks);
1272                 else if (ctr_mode == TFC_MODE_ECB && do_edcrypt == TFC_DO_ENCRYPT)
1273                         tf_ecb_encrypt(key, dstblk, srcblk, ldone);
1274                 else if (ctr_mode == TFC_MODE_ECB && do_edcrypt == TFC_DO_DECRYPT)
1275                         tf_ecb_decrypt(key, dstblk, srcblk, ldone);
1276                 else if (ctr_mode == TFC_MODE_CBC && do_edcrypt == TFC_DO_ENCRYPT)
1277                         tf_cbc_encrypt(key, ctr, dstblk, srcblk, ldone);
1278                 else if (ctr_mode == TFC_MODE_CBC && do_edcrypt == TFC_DO_DECRYPT)
1279                         tf_cbc_decrypt(key, ctr, dstblk, srcblk, ldone);
1280                 else if (ctr_mode == TFC_MODE_PCBC && do_edcrypt == TFC_DO_ENCRYPT)
1281                         tf_pcbc_encrypt(key, ctr, dstblk, srcblk, ldone);
1282                 else if (ctr_mode == TFC_MODE_PCBC && do_edcrypt == TFC_DO_DECRYPT)
1283                         tf_pcbc_decrypt(key, ctr, dstblk, srcblk, ldone);
1284
1285                 else if (ctr_mode == TFC_MODE_PLAIN)
1286                         memcpy(dstblk, srcblk, ldone);
1287
1288                 else if (ctr_mode == TFC_MODE_XOR)
1289                         xor_block(dstblk, srcblk, ldone);
1290
1291                 if (do_mac >= TFC_MAC_VRFY) skein_update(&sk, dstblk, ldone);
1292                 if (do_mac >= TFC_MAC_JUST_VRFY) goto _nowrite;
1293
1294                 pblk = dstblk;
1295                 lrem = ldone;
1296                 ldone = 0;
1297 _wagain:        lio = xwrite(dfd, pblk, lrem);
1298                 if (lio != NOSIZE) ldone += lio;
1299                 else xerror(NO, NO, NO, "%s", dstfname);
1300                 if (do_fsync && fsync(dfd) == -1) xerror(NO, NO, NO, "%s", dstfname);
1301                 if (lio < lrem) {
1302                         pblk += lio;
1303                         lrem -= lio;
1304                         goto _wagain;
1305                 }
1306                 total_written_dst += ldone;
1307 _nowrite:       total_processed_dst += ldone;
1308                 delta_processed += ldone;
1309
1310                 if (maxlen != NOFSIZE && total_processed_src >= maxlen) {
1311                         do_stop = YES;
1312                         break;
1313                 }
1314         }
1315
1316         if (verbose && status_timer && do_statline_dynamic == YES && statline_was_shown == YES) tfc_esay("\n");
1317
1318         errno = 0;
1319         if (do_mac >= TFC_MAC_VRFY) {
1320                 if (!do_mac_file) {
1321                         pblk = macvrfy;
1322                         ldone = 0;
1323                         lrem = lblock = TF_FROM_BITS(macbits);
1324                         if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(sfd);
1325 _macragain:             lio = xread(sfd, pblk, lrem);
1326                         if (lio != NOSIZE) ldone += lio;
1327                         else {
1328                                 if (errno != EIO && catch_all_errors != YES)
1329                                         xerror(NO, NO, NO, "%s", srcfname);
1330                                 switch (error_action) {
1331                                         case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", srcfname); goto _macragain; break;
1332                                         case TFC_ERRACT_SYNC:
1333                                         case TFC_ERRACT_LSYNC:
1334                                                 xerror(YES, NO, NO, "%s", srcfname);
1335                                                 lio = ldone = lrem = lblock;
1336                                                 memset(macvrfy, 0, lio);
1337                                                 if (rdpos == NOFSIZE) lseek(sfd, lio, SEEK_CUR);
1338                                                 else lseek(sfd, rdpos + lio, SEEK_SET);
1339                                                 break;
1340                                         default: xerror(NO, NO, NO, "%s", srcfname); break;
1341                                 }
1342                         }
1343                         if (lio && lio < lrem) {
1344                                 pblk += lio;
1345                                 lrem -= lio;
1346                                 goto _macragain;
1347                         }
1348                         total_processed_src += ldone;
1349                 }
1350                 else {
1351                         int mfd;
1352
1353                         if (!strcmp(do_mac_file, "-")) mfd = 0;
1354                         else mfd = xopen(do_mac_file, O_RDONLY | O_LARGEFILE);
1355                         lio = ldone = xread(mfd, tmpdata, sizeof(tmpdata));
1356                         if (lio == NOSIZE) xerror(NO, NO, YES, "%s", do_mac_file);
1357                         if (!memcmp(tmpdata, TFC_ASCII_TFC_MAC_FOURCC, TFC_ASCII_TFC_MAC_FOURCC_LEN)) {
1358                                 memmove(tmpdata, tmpdata+TFC_ASCII_TFC_MAC_FOURCC_LEN,
1359                                         sizeof(tmpdata)-TFC_ASCII_TFC_MAC_FOURCC_LEN);
1360                                 lio = TF_FROM_BITS(macbits);
1361                                 base64_decode((char *)macvrfy, lio, (char *)tmpdata, sizeof(tmpdata));
1362                         }
1363                         else memcpy(macvrfy, tmpdata, TF_FROM_BITS(macbits));
1364                         xclose(mfd);
1365                 }
1366
1367                 if (ldone < TF_FROM_BITS(macbits)) {
1368                         if (quiet == NO) tfc_esay("%s: short signature (%zu), "
1369                                 "not verifying", tfc_format_pid(progname), ldone);
1370                         exitcode = 1;
1371                         goto _shortmac;
1372                 }
1373
1374                 skein_final(macresult, &sk);
1375
1376                 if (ctr_mode == TFC_MODE_CTR) tf_ctr_crypt(key, ctr, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1377                 else if (ctr_mode == TFC_MODE_STREAM) tf_stream_crypt(&tfe, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1378                 else if (ctr_mode == TFC_MODE_XTS) tf_xts_decrypt(key, xtskey, ctr, tmpdata, macvrfy, TF_FROM_BITS(macbits), xtsblocks);
1379                 else if (ctr_mode == TFC_MODE_ECB) tf_ecb_decrypt(key, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1380                 else if (ctr_mode == TFC_MODE_CBC) tf_cbc_decrypt(key, ctr, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1381                 else if (ctr_mode == TFC_MODE_PCBC) tf_pcbc_decrypt(key, ctr, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1382
1383                 if (!memcmp(tmpdata, macresult, TF_FROM_BITS(macbits))) {
1384                         if (quiet == NO) {
1385                                 tfc_esay("%s: signature is good", tfc_format_pid(progname));
1386                                 if (verbose) {
1387                                         if (do_outfmt == TFC_OUTFMT_B64) tfc_printbase64(stderr, macresult, TF_FROM_BITS(macbits), YES);
1388                                         else mehexdump(macresult, TF_FROM_BITS(macbits), TF_FROM_BITS(macbits), YES);
1389                                 }
1390                         }
1391                         if (do_mac == TFC_MAC_JUST_VRFY2) {
1392                                 if (verbose) tfc_esay("%s: -u: MAC signature is valid, proceeding with decrypting it again", tfc_format_pid(progname));
1393                                 maxlen = total_processed_src - SKEIN_DIGEST_SIZE;
1394                                 do_mac = TFC_MAC_DROP2;
1395                                 goto _decrypt_again_vrfy2;
1396                         }
1397                 }
1398                 else {
1399                         if (quiet == NO) {
1400                                 tfc_esay("%s: signature is BAD: "
1401                                 "wrong password, key, mode, or file is not signed", tfc_format_pid(progname));
1402                                 if (do_mac == TFC_MAC_JUST_VRFY2) tfc_esay("%s: -u: MAC signature is invalid, not decrypting it again", tfc_format_pid(progname));
1403                         }
1404                         exitcode = 1;
1405                 }
1406
1407 _shortmac:      memset(macvrfy, 0, sizeof(macvrfy));
1408                 memset(macresult, 0, sizeof(macresult));
1409                 memset(tmpdata, 0, sizeof(tmpdata));
1410         }
1411         else if (do_mac == TFC_MAC_SIGN) {
1412                 skein_final(macresult, &sk);
1413
1414                 if (ctr_mode == TFC_MODE_CTR) tf_ctr_crypt(key, ctr, tmpdata, macresult, TF_FROM_BITS(macbits));
1415                 else if (ctr_mode == TFC_MODE_STREAM) tf_stream_crypt(&tfe, tmpdata, macresult, TF_FROM_BITS(macbits));
1416                 else if (ctr_mode == TFC_MODE_XTS) tf_xts_encrypt(key, xtskey, ctr, tmpdata, macresult, TF_FROM_BITS(macbits), xtsblocks);
1417                 else if (ctr_mode == TFC_MODE_ECB) tf_ecb_encrypt(key, tmpdata, macresult, TF_FROM_BITS(macbits));
1418                 else if (ctr_mode == TFC_MODE_CBC) tf_cbc_encrypt(key, ctr, tmpdata, macresult, TF_FROM_BITS(macbits));
1419                 else if (ctr_mode == TFC_MODE_PCBC) tf_pcbc_encrypt(key, ctr, tmpdata, macresult, TF_FROM_BITS(macbits));
1420                 memset(macresult, 0, sizeof(macresult));
1421
1422                 if (!do_mac_file) {
1423                         pblk = tmpdata;
1424                         lio = lrem = TF_FROM_BITS(macbits);
1425                         ldone = 0;
1426 _macwagain:             lio = xwrite(dfd, pblk, lrem);
1427                         if (lio != NOSIZE) ldone += lio;
1428                         else xerror(NO, NO, NO, "%s", dstfname);
1429                         if (do_fsync && fsync(dfd) == -1) xerror(NO, NO, NO, "%s", dstfname);
1430                         if (lio < lrem) {
1431                                 pblk += lio;
1432                                 lrem -= lio;
1433                                 goto _macwagain;
1434                         }
1435                         total_written_dst += ldone;
1436                         total_processed_dst += ldone;
1437                         delta_processed += ldone;
1438                 }
1439                 else {
1440                         int mfd;
1441
1442                         if (!strcmp(do_mac_file, "-")) mfd = 1;
1443                         else mfd = xopen(do_mac_file, O_WRONLY | O_CREAT | O_LARGEFILE | write_flags);
1444                         if (do_outfmt == TFC_OUTFMT_B64) {
1445                                 memcpy(macvrfy, tmpdata, TF_FROM_BITS(macbits));
1446                                 memset(tmpdata, 0, TFC_TMPSIZE);
1447                                 memcpy(tmpdata, TFC_ASCII_TFC_MAC_FOURCC, TFC_ASCII_TFC_MAC_FOURCC_LEN);
1448                                 base64_encode((char *)tmpdata+TFC_ASCII_TFC_MAC_FOURCC_LEN, (char *)macvrfy, TF_FROM_BITS(macbits));
1449                                 lrem = strnlen((char *)tmpdata, sizeof(tmpdata));
1450                                 if (lrem) {
1451                                         tmpdata[lrem] = '\n';
1452                                         lrem++;
1453                                 }
1454                                 lio = xwrite(mfd, tmpdata, lrem);
1455                         }
1456                         else lio = xwrite(mfd, tmpdata, TF_FROM_BITS(macbits));
1457                         if (lio == NOSIZE) xerror(NO, NO, YES, "%s", do_mac_file);
1458                         if (do_fsync && fsync(mfd) == -1) xerror(NO, NO, YES, "%s", do_mac_file);
1459                         xclose(mfd);
1460                 }
1461
1462                 memset(macvrfy, 0, sizeof(macvrfy));
1463                 memset(macresult, 0, sizeof(macresult));
1464                 memset(tmpdata, 0, sizeof(tmpdata));
1465         }
1466         else if (do_mac == TFC_MAC_DROP2) total_processed_src += SKEIN_DIGEST_SIZE;
1467
1468         if (verbose || status_timer || (do_stop == YES && quiet == NO)) print_crypt_status(0);
1469
1470         xexit(exitcode);
1471         return -1;
1472 }