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:gj")) != -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 'j':
 179                         case 'g':
 180                                 if (c == 'j') ctr_mode = TFC_MODE_CTR;
 181                                 else if (c == 'g') ctr_mode = TFC_MODE_STREAM;
 182                                 if (do_edcrypt == TFC_DO_DECRYPT) counter_opt = TFC_CTR_HEAD;
 183                                 else if (do_edcrypt == TFC_DO_ENCRYPT) counter_opt = TFC_CTR_RAND;
 184                                 else xerror(NO, YES, YES, "plain mode was selected with -%c, cannot continue", c);
 185                                 break;
 186                         case 'c':
 187                                 if (!strcasecmp(optarg, "show"))
 188                                         counter_opt = TFC_CTR_SHOW;
 189                                 else if (!strcasecmp(optarg, "head"))
 190                                         counter_opt = TFC_CTR_HEAD;
 191                                 else if (!strcasecmp(optarg, "rand"))
 192                                         counter_opt = TFC_CTR_RAND;
 193                                 else if (!strcasecmp(optarg, "zero"))
 194                                         counter_opt = TFC_CTR_ZERO;
 195                                 else if (strchr(optarg, ':')) {
 196                                         char *ss, chr;
 197
 198                                         counter_opt = TFC_CTR_SSET;
 199                                         n = sizeof(ctr);
 200
 201                                         s = d = optarg; t = NULL;
 202                                         while ((s = strtok_r(d, ",", &t))) {
 203                                                 if (d) d = NULL;
 204
 205                                                 if (n == 0) break;
 206                                                 ss = strchr(s, ':');
 207                                                 if (!ss) continue;
 208                                                 *ss = 0; ss++;
 209                                                 chr = (char)strtoul(s, &stoi, 16);
 210                                                 if (!str_empty(stoi)) continue;
 211                                                 x = (size_t)strtoul(ss, &stoi, 10);
 212                                                 if (!str_empty(stoi)) continue;
 213                                                 if (x > n) x = n;
 214                                                 memset(ctr+(sizeof(ctr)-n), (int)chr, x);
 215                                                 n -= x;
 216                                         }
 217                                 }
 218                                 else counter_file = sksum_hashlist_file = optarg;
 219                                 break;
 220                         case 'C':
 221                                 if (!strcasecmp(optarg, "ctr"))
 222                                         ctr_mode = TFC_MODE_CTR;
 223                                 else if (!strcasecmp(optarg, "stream"))
 224                                         ctr_mode = TFC_MODE_STREAM;
 225                                 else if (!strcasecmp(optarg, "cbc"))
 226                                         ctr_mode = TFC_MODE_CBC;
 227                                 else if (!strcasecmp(optarg, "pcbc"))
 228                                         ctr_mode = TFC_MODE_PCBC;
 229                                 else if (!strcasecmp(optarg, "ecb"))
 230                                         ctr_mode = TFC_MODE_ECB;
 231                                 else if (!strcasecmp(optarg, "xts"))
 232                                         ctr_mode = TFC_MODE_XTS;
 233                                 else xerror(NO, YES, YES, "%s: invalid mode of operation", optarg);
 234                                 break;
 235                         case 'P':
 236                         case 'X':
 237                                 do_edcrypt = TFC_DO_PLAIN;
 238                                 if (c == 'X') {
 239                                         ctr_mode = TFC_MODE_XOR;
 240                                         /* xor: default to stdin if invoked without args */
 241                                         kfd = 0;
 242                                 }
 243                                 else ctr_mode = TFC_MODE_PLAIN;
 244                                 break;
 245                         case 'e':
 246                                 if (do_edcrypt != TFC_DO_PLAIN) do_edcrypt = TFC_DO_ENCRYPT;
 247                                 break;
 248                         case 'd':
 249                                 if (do_edcrypt != TFC_DO_PLAIN) do_edcrypt = TFC_DO_DECRYPT;
 250                                 break;
 251                         case 'D':
 252                                 macbits = strtoul(optarg, &stoi, 10);
 253                                 if (macbits == 0 || !str_empty(stoi) || macbits < 8
 254                                 || macbits > TF_MAX_BITS || macbits % 8)
 255                                         xerror(NO, YES, YES, "%s: invalid MAC bits setting", optarg);
 256                                 break;
 257                         case 'n':
 258                                 nr_turns = sksum_turns = strtoul(optarg, &stoi, 10);
 259                                 if (!str_empty(stoi)) xerror(NO, YES, YES, "%s: invalid number of turns", optarg);
 260                                 break;
 261                         case 'U':
 262                                 if (!strcasecmp(optarg, "key"))
 263                                         mackey_opt = TFC_MACKEY_RAWKEY;
 264                                 else if (!strcasecmp(optarg, "pwd"))
 265                                         mackey_opt = TFC_MACKEY_PASSWORD;
 266                                 else {
 267                                         mackey_opt = TFC_MACKEY_FILE;
 268                                         mackeyf = optarg;
 269                                 }
 270                                 break;
 271                         case 'p':
 272                                 password = YES;
 273                                 break;
 274                         case 'k':
 275                                 rawkey = TFC_RAWKEY_KEYFILE;
 276                                 break;
 277                         case 'z':
 278                                 rawkey = TFC_RAWKEY_ASKSTR;
 279                                 break;
 280                         case 'x':
 281                                 rawkey = TFC_RAWKEY_ASKHEX;
 282                                 break;
 283                         case 'K':
 284                                 verbose = YES;
 285                                 genkeyf = optarg;
 286                                 break;
 287                         case 't':
 288                                 tweakf = optarg;
 289                                 do_full_key = NO;
 290                                 break;
 291                         case 'l':
 292                                 if (maxlen != NOFSIZE) break;
 293
 294                                 maxlen = tfc_humanfsize(optarg, &stoi);
 295                                 if (!str_empty(stoi)) {
 296                                         maxlen = tfc_fnamesize(optarg, YES);
 297                                         maxlen = tfc_modifysize(maxlen, strchr(optarg, ':'));
 298                                         if (maxlen == NOFSIZE) xerror(NO, YES, YES,
 299                                         "%s: invalid count value", optarg);
 300                                 }
 301                                 else maxlen = tfc_modifysize(maxlen, strchr(optarg, ':'));
 302                                 if (counter_opt == TFC_CTR_HEAD)
 303                                         maxlen += TF_BLOCK_SIZE;
 304                                 break;
 305                         case 'w':
 306                                 overwrite_source = YES;
 307                                 break;
 308                         case 'E':
 309                                 if (!strcmp(optarg, "xall")) {
 310                                         catch_all_errors = YES;
 311                                         break;
 312                                 }
 313                                 if (!strcmp(optarg, "xseek")) {
 314                                         ignore_seek_errors = YES;
 315                                         break;
 316                                 }
 317                                 if (!strcmp(optarg, "exit"))
 318                                         error_action = TFC_ERRACT_EXIT;
 319                                 else if (!strncmp(optarg, "cont", 4))
 320                                         error_action = TFC_ERRACT_CONT;
 321                                 else if (!strcmp(optarg, "sync"))
 322                                         error_action = TFC_ERRACT_SYNC;
 323                                 else if (!strcmp(optarg, "lsync"))
 324                                         error_action = TFC_ERRACT_LSYNC;
 325                                 else xerror(NO, YES, YES, "invalid error action %s specified", optarg);
 326                                 break;
 327                         case 'o':
 328                                 open_log(optarg);
 329                                 break;
 330                         case 'O':
 331                                 s = d = optarg; t = NULL;
 332                                 while ((s = strtok_r(d, ",", &t))) {
 333                                         if (d) d = NULL;
 334                                         if (!strcmp(s, "sync"))
 335                                                 write_flags |= O_SYNC;
 336                                         else if (!strcmp(s, "trunc"))
 337                                                 write_flags |= O_TRUNC;
 338                                         else if (!strcmp(s, "append"))
 339                                                 write_flags |= O_APPEND;
 340                                         else if (!strcmp(s, "fsync"))
 341                                                 do_fsync = YES;
 342                                         else if (!strcmp(s, "pad"))
 343                                                 do_pad = YES;
 344                                         else if (!strcmp(s, "ro"))
 345                                                 read_only = YES;
 346                                         else if (!strcmp(s, "rw"))
 347                                                 read_only = NO;
 348                                         else if (!strcmp(s, "xtime"))
 349                                                 do_preserve_time = YES;
 350                                         else if (!strcmp(s, "gibsize"))
 351                                                 do_stats_in_gibs = YES;
 352                                         else if (!strcmp(s, "plainstats"))
 353                                                 do_statline_dynamic = NO;
 354                                         else if (!strcmp(s, "statless"))
 355                                                 do_less_stats = YES;
 356                                         else if (!strcmp(s, "norepeat"))
 357                                                 no_repeat = YES;
 358                                         else if (!strncmp(s, "prompt", 6) && *(s+6) == '=')
 359                                                 pw_prompt = s+7;
 360                                         else if (!strncmp(s, "macprompt", 9) && *(s+9) == '=')
 361                                                 mac_pw_prompt = s+10;
 362                                         else if (!strcmp(s, "shorthex"))
 363                                                 do_full_hexdump = NO;
 364                                         else if (!strcmp(s, "fullkey"))
 365                                                 do_full_key = YES;
 366                                         else if (!strcmp(s, "showsecrets"))
 367                                                 show_secrets = YES;
 368                                         else if (!strcmp(s, "finished"))
 369                                                 show_when_done = YES;
 370                                         else if (!strcmp(s, "pid"))
 371                                                 show_pid = YES;
 372                                         else if (!strcmp(s, "nobuf")) {
 373                                                 if (!tfc_is_freestream(ctr_mode)) xerror(NO, YES, YES,
 374                                                         "cannot activate unbuffered mode for non-stream cipher mode %s!",
 375                                                         tfc_modename(ctr_mode));
 376                                                 else unbuffered = YES;
 377                                         }
 378                                         else if (!strncmp(s, "readloops", 9) && *(s+9) == '=') {
 379                                                 do_read_loops = tfc_humanfsize(s+10, &stoi);
 380                                                 if (!str_empty(stoi)) do_read_loops = NOSIZE;
 381                                         }
 382                                         else if (!strncmp(s, "logfile", 7) && *(s+7) == '=')
 383                                                 open_log(s+8);
 384                                         else if (!strncmp(s, "iobs", 4) && *(s+4) == '=') {
 385                                                 s += 5;
 386                                                 blksize = (size_t)tfc_humanfsize(s, &stoi);
 387                                                 if (!str_empty(stoi)) {
 388                                                         blksize = (size_t)tfc_fnamesize(s, YES);
 389                                                         blksize = (size_t)tfc_modifysize((tfc_fsize)blksize, strchr(s, ':'));
 390                                                         if (blksize == NOSIZE) xerror(NO, YES, YES,
 391                                                         "%s: invalid block size value", s);
 392                                                 }
 393                                                 else blksize = (size_t)tfc_modifysize((tfc_fsize)blksize, strchr(s, ':'));
 394                                                 if (!tfc_is_freestream(ctr_mode) && blksize < TF_BLOCK_SIZE) xerror(NO, YES, YES,
 395                                                         "%s: block size is lesser than TF_BLOCK_SIZE (%u bytes)", s, TFC_U(TF_BLOCK_SIZE));
 396                                                 if (blksize > TFC_BLKSIZE) xerror(NO, YES, YES,
 397                                                         "%s: block size exceeds %u bytes",
 398                                                         s, TFC_U(TFC_BLKSIZE));
 399                                         }
 400                                         else if (!strncmp(s, "xtsblocks", 9) && *(s+9) == '=') {
 401                                                 s += 10;
 402                                                 xtsblocks = (size_t)tfc_humanfsize(s, &stoi);
 403                                                 if (!str_empty(stoi)) {
 404                                                         xtsblocks = (size_t)tfc_fnamesize(s, YES);
 405                                                         xtsblocks = (size_t)tfc_modifysize((tfc_fsize)xtsblocks, strchr(s, ':'));
 406                                                         if (xtsblocks == NOSIZE) xerror(NO, YES, YES,
 407                                                         "%s: invalid blocks per xts block value", s);
 408                                                 }
 409                                                 else xtsblocks = (size_t)tfc_modifysize((tfc_fsize)xtsblocks, strchr(s, ':'));
 410                                                 if (TFC_BLKSIZE % xtsblocks) xerror(NO, YES, YES,
 411                                                         "%s: nr of blocks per xts block is not round to %u bytes",
 412                                                         s, TFC_U(TFC_BLKSIZE));
 413                                                 if ((xtsblocks * TF_BLOCK_SIZE) > TFC_BLKSIZE) xerror(NO, YES, YES,
 414                                                         "%s: nr of blocks per xts block exceeds %u bytes",
 415                                                         s, TFC_U(TFC_BLKSIZE));
 416                                         }
 417                                         else if (!strncmp(s, "iseek", 5) && *(s+5) == '=') {
 418                                                 s += 6;
 419                                                 iseek = tfc_humanfsize(s, &stoi);
 420                                                 if (!str_empty(stoi)) {
 421                                                         iseek = tfc_fnamesize(s, YES);
 422                                                         iseek = tfc_modifysize(iseek, strchr(s, ':'));
 423                                                         if (iseek == NOFSIZE) xerror(NO, YES, YES,
 424                                                         "%s: invalid iseek value", s);
 425                                                 }
 426                                                 else iseek = tfc_modifysize(iseek, strchr(s, ':'));
 427                                                 if (do_edcrypt != TFC_DO_PLAIN && iseek % TF_BLOCK_SIZE)
 428                                                         xerror(NO, YES, YES,
 429                                                                 "%s: not round to TF block size "
 430                                                                 "of %u bytes",
 431                                                                 s, TFC_U(TF_BLOCK_SIZE));
 432                                                 iseek_blocks = iseek / TF_BLOCK_SIZE;
 433                                         }
 434                                         else if (!strncmp(s, "ixseek", 6) && *(s+6) == '=') {
 435                                                 s += 7;
 436                                                 iseek = tfc_humanfsize(s, &stoi);
 437                                                 if (!str_empty(stoi)) {
 438                                                         iseek = tfc_fnamesize(s, YES);
 439                                                         iseek = tfc_modifysize(iseek, strchr(s, ':'));
 440                                                         if (iseek == NOFSIZE) xerror(NO, YES, YES,
 441                                                                 "%s: invalid ixseek value", s);
 442                                                 }
 443                                                 else iseek = tfc_modifysize(iseek, strchr(s, ':'));
 444                                         }
 445                                         else if (!strncmp(s, "ictr", 4) && *(s+4) == '=') {
 446                                                 s += 5;
 447                                                 iseek_blocks = tfc_humanfsize(s, &stoi);
 448                                                 if (!str_empty(stoi)) {
 449                                                         iseek_blocks = tfc_fnamesize(s, YES);
 450                                                         if (iseek_blocks == NOFSIZE)
 451                                                                 xerror(NO, YES, YES,
 452                                                                 "%s: invalid ictr value", s);
 453                                                         iseek_blocks /= TF_BLOCK_SIZE;
 454                                                         iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 455                                                 }
 456                                                 else iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 457                                         }
 458                                         else if (!strncmp(s, "ixctr", 5) && *(s+5) == '=') {
 459                                                 s += 6;
 460                                                 iseek_blocks = tfc_humanfsize(s, &stoi);
 461                                                 if (!str_empty(stoi)) {
 462                                                         iseek_blocks = tfc_fnamesize(s, YES);
 463                                                         iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 464                                                         if (iseek_blocks == NOFSIZE)
 465                                                                 xerror(NO, YES, YES,
 466                                                                 "%s: invalid ixctr value", s);
 467                                                 }
 468                                                 else iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
 469                                                 if (iseek_blocks % TF_BLOCK_SIZE)
 470                                                         xerror(NO, YES, YES,
 471                                                         "%s: not round to TF block size "
 472                                                         "of %u bytes", s, TFC_U(TF_BLOCK_SIZE));
 473                                                 iseek_blocks /= TF_BLOCK_SIZE;
 474                                         }
 475                                         else if (!strncmp(s, "oseek", 5) && *(s+5) == '=') {
 476                                                 s += 6;
 477                                                 oseek = tfc_humanfsize(s, &stoi);
 478                                                 if (!str_empty(stoi)) {
 479                                                         oseek = tfc_fnamesize(s, YES);
 480                                                         oseek = tfc_modifysize(oseek, strchr(s, ':'));
 481                                                         if (oseek == NOFSIZE) xerror(NO, YES, YES,
 482                                                         "%s: invalid oseek value", s);
 483                                                 }
 484                                                 else oseek = tfc_modifysize(oseek, strchr(s, ':'));
 485                                         }
 486                                         else if (!strncmp(s, "ioseek", 6) && *(s+6) == '=') {
 487                                                 s += 7;
 488
 489                                                 iseek = tfc_humanfsize(s, &stoi);
 490                                                 if (!str_empty(stoi)) {
 491                                                         iseek = tfc_fnamesize(s, YES);
 492                                                         iseek = tfc_modifysize(iseek, strchr(s, ':'));
 493                                                         if (iseek == NOFSIZE) xerror(NO, YES, YES,
 494                                                         "%s: invalid iseek value", s);
 495                                                 }
 496                                                 else iseek = tfc_modifysize(iseek, strchr(s, ':'));
 497                                                 if (do_edcrypt != TFC_DO_PLAIN && iseek % TF_BLOCK_SIZE)
 498                                                         xerror(NO, YES, YES,
 499                                                                 "%s: not round to TF block size "
 500                                                                 "of %u bytes",
 501                                                                 s, TFC_U(TF_BLOCK_SIZE));
 502                                                 iseek_blocks = iseek / TF_BLOCK_SIZE;
 503
 504                                                 oseek = tfc_humanfsize(s, &stoi);
 505                                                 if (!str_empty(stoi)) {
 506                                                         oseek = tfc_fnamesize(s, YES);
 507                                                         oseek = tfc_modifysize(oseek, strchr(s, ':'));
 508                                                         if (oseek == NOFSIZE) xerror(NO, YES, YES,
 509                                                         "%s: invalid oseek value", s);
 510                                                 }
 511                                                 else oseek = tfc_modifysize(oseek, strchr(s, ':'));
 512                                         }
 513                                         else if (!strncmp(s, "count", 5) && *(s+5) == '=') {
 514                                                 s += 6;
 515                                                 maxlen = tfc_humanfsize(s, &stoi);
 516                                                 if (!str_empty(stoi)) {
 517                                                         maxlen = tfc_fnamesize(s, YES);
 518                                                         maxlen = tfc_modifysize(maxlen, strchr(s, ':'));
 519                                                         if (maxlen == NOFSIZE) xerror(NO, YES, YES,
 520                                                         "%s: invalid count value", s);
 521                                                 }
 522                                                 else maxlen = tfc_modifysize(maxlen, strchr(s, ':'));
 523                                                 if (counter_opt == TFC_CTR_HEAD)
 524                                                         maxlen += TF_BLOCK_SIZE;
 525                                         }
 526                                         else if (!strncmp(s, "ftrunc", 6) && *(s+6) == '=') {
 527                                                 s += 7;
 528                                                 if (!strcmp(s, "tail")) {
 529                                                         do_ftrunc = TFC_FTRUNC_TAIL;
 530                                                         ftrunc_dfd = NOFSIZE;
 531                                                 }
 532                                                 else {
 533                                                         do_ftrunc = TFC_DO_FTRUNC;
 534                                                         ftrunc_dfd = tfc_humanfsize(s, &stoi);
 535                                                         if (!str_empty(stoi)) {
 536                                                                 ftrunc_dfd = tfc_fnamesize(s, YES);
 537                                                                 ftrunc_dfd = tfc_modifysize(ftrunc_dfd, strchr(s, ':'));
 538                                                                 if (ftrunc_dfd == NOFSIZE) xerror(NO, YES, YES,
 539                                                                 "%s: invalid ftrunc value", s);
 540                                                         }
 541                                                         else ftrunc_dfd = tfc_modifysize(ftrunc_dfd, strchr(s, ':'));
 542                                                 }
 543                                         }
 544                                         else if (!strncmp(s, "xkey", 4) && *(s+4) == '=') {
 545                                                 s += 5;
 546                                                 maxkeylen = tfc_humanfsize(s, &stoi);
 547                                                 if (!str_empty(stoi)) {
 548                                                         maxkeylen = tfc_fnamesize(s, YES);
 549                                                         maxkeylen = tfc_modifysize(maxkeylen, strchr(s, ':'));
 550                                                         if (maxkeylen == NOSIZE)
 551                                                                 xerror(NO, YES, YES,
 552                                                                 "%s: invalid key length value", s);
 553                                                 }
 554                                                 else maxkeylen = tfc_modifysize(maxkeylen, strchr(s, ':'));
 555                                         }
 556                                         else if (!strncmp(s, "okey", 4) && *(s+4) == '=') {
 557                                                 s += 5;
 558                                                 keyoffset = tfc_humanfsize(s, &stoi);
 559                                                 if (!str_empty(stoi)) {
 560                                                         keyoffset = tfc_fnamesize(s, YES);
 561                                                         keyoffset = tfc_modifysize(keyoffset, strchr(s, ':'));
 562                                                         if (keyoffset == NOFSIZE)
 563                                                                 xerror(NO, YES, YES,
 564                                                                 "%s: invalid key offset value", s);
 565                                                 }
 566                                                 else keyoffset = tfc_modifysize(keyoffset, strchr(s, ':'));
 567                                         }
 568                                         else if (!strncmp(s, "xctr", 4) && *(s+4) == '=') {
 569                                                 s += 5;
 570                                                 ctrsz = tfc_humanfsize(s, &stoi);
 571                                                 if (!str_empty(stoi)) {
 572                                                         ctrsz = (size_t)tfc_fnamesize(s, YES);
 573                                                         ctrsz = (size_t)tfc_modifysize((tfc_fsize)ctrsz, strchr(s, ':'));
 574                                                         if (ctrsz == NOSIZE)
 575                                                                 xerror(NO, YES, YES,
 576                                                                 "%s: invalid counter length value", s);
 577                                                 }
 578                                                 else ctrsz = (size_t)tfc_modifysize((tfc_fsize)ctrsz, strchr(s, ':'));
 579                                                 if (ctrsz > TF_BLOCK_SIZE)
 580                                                         xerror(NO, YES, YES, "%s: counter size cannot exceed TF block size", s);
 581                                         }
 582                                         else xerror(NO, YES, YES, "invalid option %s", s);
 583                                 }
 584                                 break;
 585                         case 'S':
 586                                 do_mac = TFC_MAC_SIGN;
 587                                 if (strcasecmp(optarg, "mac") != 0)
 588                                         do_mac_file = optarg;
 589                                 break;
 590                         case 'M':
 591                                 do_mac = TFC_MAC_VRFY;
 592                                 if (!strcasecmp(optarg, "drop"))
 593                                         do_mac = TFC_MAC_DROP;
 594                                 else if (strcasecmp(optarg, "mac") != 0)
 595                                         do_mac_file = optarg;
 596                                 break;
 597                         case 'm':
 598                         case 'u':
 599                                 if (do_mac != TFC_MAC_VRFY)
 600                                         xerror(NO, YES, YES, "signature source was not specified");
 601                                 do_mac = TFC_MAC_JUST_VRFY;
 602                                 if (c == 'u') do_mac = TFC_MAC_JUST_VRFY2;
 603                                 break;
 604                         case 'R':
 605                         case 'Z':
 606                                 if (maxlen != NOFSIZE) {
 607                                         if (c == 'Z') genzero_nr_bytes = maxlen;
 608                                         else genrandom_nr_bytes = maxlen;
 609                                 }
 610                                 else {
 611                                         tfc_fsize t;
 612                                         if (!strcasecmp(optarg, "cbs"))
 613                                                 t = TF_BLOCK_SIZE;
 614                                         else if (!strcasecmp(optarg, "ks"))
 615                                                 t = TF_FROM_BITS(TFC_KEY_BITS);
 616                                         else if (!strcasecmp(optarg, "xks"))
 617                                                 t = TF_FROM_BITS(TFC_KEY_BITS) * 2;
 618                                         else if (!strcasecmp(optarg, "iobs"))
 619                                                 t = blksize;
 620                                         else {
 621                                                 t = tfc_humanfsize(optarg, &stoi);
 622                                                 if (!str_empty(stoi)) {
 623                                                         t = tfc_fnamesize(optarg, NO);
 624                                                         t = tfc_modifysize(t, strchr(optarg, ':'));
 625                                                 }
 626                                                 else t = tfc_modifysize(t, strchr(optarg, ':'));
 627                                         }
 628                                         if (c == 'Z') genzero_nr_bytes = maxlen = t;
 629                                         else genrandom_nr_bytes = maxlen = t;
 630                                 }
 631                                 break;
 632                         case 'a':
 633                                 do_preserve_time = YES;
 634                                 break;
 635                         case 'A':
 636                                 do_outfmt = TFC_OUTFMT_B64;
 637                                 break;
 638                         case 'W':
 639                                 do_outfmt = TFC_OUTFMT_RAW;
 640                                 break;
 641                         case 'H':
 642                                 do_outfmt = TFC_OUTFMT_HEX;
 643                                 break;
 644                         case 'q':
 645                                 quiet = YES;
 646                                 verbose = NO;
 647                                 do_full_hexdump = NO;
 648                                 status_timer = 0;
 649                                 break;
 650                         case 'v':
 651                                 verbose = YES;
 652                                 break;
 653                         case 'V':
 654                                 td = strtod(optarg, &stoi);
 655                                 status_timer = TFC_DTOUSECS(td);
 656                                 if (status_timer <= TFC_DTOUSECS(0) || !str_empty(stoi)) status_timer = 0;
 657                                 break;
 658                         default:
 659                                 usage();
 660                                 break;
 661                 }
 662         }
 663
 664         if (!strcmp(progname, "tfbench")) {
 665                 if (!*(argv+optind)) usage();
 666
 667                 td = strtod(*(argv+optind), &stoi);
 668                 if (td <= TFC_DTOUSECS(0) || !str_empty(stoi))
 669                         xerror(NO, YES, YES,
 670                         "%s: invalid benchmark time in seconds", *(argv+optind));
 671                 bench_timer = TFC_DTOUSECS(td);
 672                 do_benchmark(bench_timer, td);
 673         }
 674         if (genrandom_nr_bytes) {
 675                 ctr_mode = TFC_MODE_STREAM;
 676                 do_edcrypt = TFC_DO_ENCRYPT;
 677                 gen_write_bytes(*(argv+optind), oseek, genrandom_nr_bytes);
 678         }
 679         if (genzero_nr_bytes) {
 680                 ctr_mode = TFC_MODE_PLAIN;
 681                 do_edcrypt = TFC_DO_PLAIN;
 682                 gen_write_bytes(*(argv+optind), oseek, genzero_nr_bytes);
 683         }
 684
 685         if (rawkey && password)
 686                 xerror(NO, YES, YES, "Cannot use rawkey and hashing password!");
 687         if (do_edcrypt == TFC_DO_ENCRYPT && do_mac >= TFC_MAC_VRFY)
 688                 xerror(NO, YES, YES, "Cannot encrypt and verify signature!");
 689         if (do_edcrypt == TFC_DO_DECRYPT && do_mac == TFC_MAC_SIGN)
 690                 xerror(NO, YES, YES, "Cannot decrypt and calculate signature!");
 691         if (do_edcrypt == TFC_DO_DECRYPT && counter_opt == TFC_CTR_RAND)
 692                 xerror(NO, YES, YES, "Cannot decrypt and embed a generated CTR into file!");
 693         if (do_edcrypt == TFC_DO_ENCRYPT && counter_opt == TFC_CTR_HEAD)
 694                 xerror(NO, YES, YES, "Cannot encrypt and read CTR from source!");
 695         if (overwrite_source && counter_opt == TFC_CTR_RAND)
 696                 xerror(NO, YES, YES, "Cannot embed a CTR into file when overwriting it!");
 697         if (do_edcrypt == TFC_DO_PLAIN
 698         && (do_mac || saltf || rawkey || mackey_opt || counter_opt || counter_file))
 699                 xerror(NO, YES, YES, "Encryption facility is disabled when in plain IO mode.");
 700
 701         errno = 0;
 702         do_stop = NO;
 703
 704         if (saltf) {
 705                 int saltfd;
 706
 707                 memset(tfc_salt, 0, TFC_MAX_SALT);
 708                 tfc_saltsz = 0;
 709                 if (!strcasecmp(saltf, "disable")) goto _nosalt;
 710
 711                 if (!strcmp(saltf, "-")) saltfd = 0;
 712                 else saltfd = xopen(saltf, O_RDONLY | O_LARGEFILE);
 713                 lio = xread(saltfd, tfc_salt, TFC_MAX_SALT - TF_FROM_BITS(TFC_KEY_BITS));
 714                 if (lio == NOSIZE) xerror(NO, NO, YES, "%s", saltf);
 715                 tfc_saltsz = lio;
 716                 xclose(saltfd);
 717         }
 718
 719 _nosalt:
 720         if (mackey_opt == TFC_MACKEY_FILE && mackeyf) {
 721                 int mkfd = -1;
 722                 tfc_yesno do_stop;
 723
 724                 if (!strcmp(mackeyf, "-")) mkfd = 0;
 725                 else mkfd = xopen(mackeyf, O_RDONLY | O_LARGEFILE);
 726
 727                 skein_init(&sk, TFC_KEY_BITS);
 728
 729                 do_stop = NO;
 730                 while (1) {
 731                         if (do_stop) break;
 732                         pblk = tmpdata;
 733                         ldone = 0;
 734                         lrem = lblock = sizeof(tmpdata);
 735                         if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(mkfd);
 736 _mkragain:              lio = xread(mkfd, pblk, lrem);
 737                         if (lio == 0 && do_stop == NO) do_stop = YES;
 738                         if (lio != NOSIZE) ldone += lio;
 739                         else {
 740                                 if (errno != EIO && catch_all_errors != YES)
 741                                         xerror(NO, NO, NO, "%s", mackeyf);
 742                                 switch (error_action) {
 743                                         case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", mackeyf); goto _mkragain; break;
 744                                         case TFC_ERRACT_SYNC:
 745                                         case TFC_ERRACT_LSYNC:
 746                                                 xerror(YES, NO, NO, "%s", mackeyf);
 747                                                 lio = ldone = lrem = lblock;
 748                                                 memset(tmpdata, 0, lio);
 749                                                 if (rdpos == NOFSIZE) lseek(mkfd, lio, SEEK_CUR);
 750                                                 else lseek(mkfd, rdpos + lio, SEEK_SET);
 751                                                 break;
 752                                         default: xerror(NO, NO, NO, "%s", mackeyf); break;
 753                                 }
 754                         }
 755                         if (lio && lio < lrem) {
 756                                 pblk += lio;
 757                                 lrem -= lio;
 758                                 goto _mkragain;
 759                         }
 760
 761                         skein_update(&sk, tmpdata, ldone);
 762                 }
 763
 764                 skein_final(mackey, &sk);
 765
 766                 xclose(mkfd);
 767         }
 768         else if (mackey_opt == TFC_MACKEY_PASSWORD) {
 769                 memset(&getps, 0, sizeof(struct getpasswd_state));
 770                 getps.fd = getps.efd = -1;
 771                 getps.passwd = pwdask;
 772                 getps.pwlen = sizeof(pwdask)-1;
 773                 getps.echo = mac_pw_prompt ? mac_pw_prompt : "Enter MAC password: ";
 774                 getps.charfilter = (show_secrets == YES) ? getps_plain_filter : getps_filter;
 775                 getps.maskchar = (show_secrets == YES) ? 0 : 'x';
 776                 getps.flags = GETP_WAITFILL;
 777                 n = xgetpasswd(&getps);
 778                 if (n == NOSIZE) xerror(NO, NO, YES, "getting MAC password");
 779                 if (n == ((size_t)-2)) xexit(1);
 780                 if (verbose) say_hint(pwdask, n, "MAC password hint");
 781                 skein(mackey, TF_MAX_BITS, NULL, pwdask, n);
 782         }
 783
 784
 785         if ((strlen(progname) <= 9)
 786         && ((!strcmp(progname, "sksum"))
 787         || ((!memcmp(progname, "sk", 2))
 788         && (!memcmp(progname+3, "sum", 3)
 789         || !memcmp(progname+4, "sum", 3)
 790         || !memcmp(progname+5, "sum", 3)
 791         || !memcmp(progname+6, "sum", 3)))))
 792                 do_sksum(progname, argv+optind);
 793         if (!strcmp(progname, "base64")) do_edbase64(argv+optind);
 794
 795         idx = optind;
 796
 797         if (argv[idx]) {
 798                 if ((do_edcrypt == TFC_DO_PLAIN && ctr_mode == TFC_MODE_PLAIN)
 799                 || password
 800                 || rawkey > TFC_RAWKEY_KEYFILE) goto _nokeyfd;
 801                 if (!strcmp(argv[idx], "-")) kfd = 0;
 802                 else kfd = xopen(argv[idx], O_RDONLY | O_LARGEFILE);
 803
 804                 if (do_edcrypt == TFC_DO_PLAIN && ctr_mode == TFC_MODE_XOR) {
 805                         /* out: don't erase kfname if xor */
 806                         idx++;
 807                         goto _nokeyfd;
 808                 }
 809
 810                 lio = strnlen(argv[idx], PATH_MAX);
 811                 memset(argv[idx], '*', lio);
 812
 813                 idx++;
 814         }
 815         else password = YES;
 816
 817         errno = 0;
 818         if (do_full_key == NO && tweakf) {
 819                 int twfd;
 820
 821                 if (!strcmp(tweakf, "-")) twfd = 0;
 822                 else twfd = open(tweakf, O_RDONLY | O_LARGEFILE);
 823                 if (twfd == -1) xerror(NO, NO, YES, "%s", tweakf);
 824                 lio = ldone = xread(twfd, tweak, TF_TWEAK_SIZE);
 825                 if (lio == NOSIZE) xerror(NO, NO, YES, "%s", tweakf);
 826                 if (ldone < TF_TWEAK_SIZE)
 827                         xerror(NO, NO, YES, "%s: %zu bytes tweak required", tweakf, TF_TWEAK_SIZE);
 828                 xclose(twfd);
 829         }
 830
 831 _nokeyfd:
 832         errno = 0;
 833         if (argv[idx]) {
 834                 if (!strcmp(argv[idx], "-") && kfd) sfd = 0;
 835                 else {
 836                         sfd = xopen(argv[idx], O_RDONLY | O_LARGEFILE);
 837                         if (do_preserve_time) if (fstat(sfd, &s_stat) == -1)
 838                                 xerror(YES, NO, YES, "stat(%s)", argv[idx]);
 839                 }
 840
 841                 if ((do_mac >= TFC_MAC_VRFY || do_mac <= TFC_MAC_DROP) && !do_mac_file) {
 842                         maxlen = tfc_fdsize(sfd);
 843                         if (maxlen == NOFSIZE)
 844                                 xerror(NO, YES, YES,
 845                                 "Cannot verify embedded MAC with non-seekable source!");
 846                         maxlen -= TF_FROM_BITS(macbits);
 847                 }
 848                 srcfname = argv[idx];
 849                 idx++;
 850         }
 851
 852         if (!do_mac_file && (do_mac >= TFC_MAC_VRFY && sfd == 0))
 853                 xerror(NO, YES, YES, "Cannot verify embedded MAC with non-seekable source!");
 854
 855         if (ctrsz == NOSIZE) ctrsz = TF_BLOCK_SIZE;
 856         if (ctrsz > TF_BLOCK_SIZE) ctrsz = TF_BLOCK_SIZE;
 857
 858         if (ctr_mode == TFC_MODE_ECB) goto _ctrskip1;
 859         errno = 0;
 860         if (counter_file) {
 861                 int ctrfd;
 862
 863                 if (!strcmp(counter_file, "-")) ctrfd = 0;
 864                 else ctrfd = xopen(counter_file, O_RDONLY | O_LARGEFILE);
 865                 lio = xread(ctrfd, ctr, ctrsz);
 866                 if (lio == NOSIZE) xerror(NO, NO, YES, "%s", counter_file);
 867                 if (lio < ctrsz) xerror(NO, YES, YES, "counter file is too small (%zu)!", lio);
 868                 xclose(ctrfd);
 869         }
 870         else if (counter_opt == TFC_CTR_HEAD) {
 871                 pblk = ctr;
 872                 ldone = 0;
 873                 lrem = lblock = ctrsz;
 874                 if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(sfd);
 875 _ctrragain:     lio = xread(sfd, pblk, lrem);
 876                 if (lio != NOSIZE) ldone += lio;
 877                 else {
 878                         if (errno != EIO && catch_all_errors != YES)
 879                                 xerror(NO, NO, NO, "%s", srcfname);
 880                         switch (error_action) {
 881                                 case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", srcfname); goto _ctrragain; break;
 882                                 case TFC_ERRACT_SYNC:
 883                                 case TFC_ERRACT_LSYNC:
 884                                         xerror(YES, NO, NO, "%s", srcfname);
 885                                         lio = ldone = lrem = lblock;
 886                                         memset(ctr, 0, lio);
 887                                         if (rdpos == NOFSIZE) lseek(sfd, lio, SEEK_CUR);
 888                                         else lseek(sfd, rdpos + lio, SEEK_SET);
 889                                         break;
 890                                 default: xerror(NO, NO, NO, "%s", srcfname); break;
 891                         }
 892                 }
 893                 if (lio && lio < lrem) {
 894                         pblk += lio;
 895                         lrem -= lio;
 896                         goto _ctrragain;
 897                 }
 898                 total_processed_src += ldone;
 899         }
 900
 901 _ctrskip1:
 902         if (iseek) {
 903                 if (counter_opt == TFC_CTR_HEAD && ctr_mode != TFC_MODE_ECB)
 904                         iseek += ctrsz;
 905                 if (lseek(sfd, iseek, SEEK_SET) == -1)
 906                         xerror(ignore_seek_errors, NO, NO, "%s: seek failed", srcfname);
 907         }
 908
 909         if (do_edcrypt == TFC_DO_PLAIN) goto _plain;
 910
 911         if (verbose) tfc_esay("%s: hashing password", tfc_format_pid(progname));
 912
 913         if (rawkey == TFC_RAWKEY_KEYFILE) {
 914                 tfc_yesno xtskeyset = NO;
 915
 916                 pblk = key;
 917 _xts2key:       ldone = 0;
 918                 lrem = lblock = TF_FROM_BITS(TFC_KEY_BITS);
 919                 if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(kfd);
 920 _keyragain:     lio = xread(kfd, pblk, lrem);
 921                 if (lio != NOSIZE) ldone += lio;
 922                 else {
 923                         if (errno != EIO && catch_all_errors != YES)
 924                                 xerror(NO, NO, NO, "reading key");
 925                         switch (error_action) {
 926                                 case TFC_ERRACT_CONT: xerror(YES, NO, NO, "reading key"); goto _keyragain; break;
 927                                 case TFC_ERRACT_SYNC:
 928                                 case TFC_ERRACT_LSYNC:
 929                                         xerror(YES, NO, NO, "reading key");
 930                                         lio = ldone = lrem = lblock;
 931                                         memset(key, 0, lio);
 932                                         if (rdpos == NOFSIZE) lseek(kfd, lio, SEEK_CUR);
 933                                         else lseek(kfd, rdpos + lio, SEEK_SET);
 934                                         break;
 935                                 default: xerror(NO, NO, NO, "reading key"); break;
 936                         }
 937                 }
 938                 if (lio && lio < lrem) {
 939                         pblk += lio;
 940                         lrem -= lio;
 941                         goto _keyragain;
 942                 }
 943                 if (ldone < lblock) xerror(NO, YES, YES, "rawkey too small! (%zu)", ldone);
 944
 945                 if (ctr_mode == TFC_MODE_XTS) {
 946                         if (xtskeyset == NO) {
 947                                 pblk = xtskey;
 948                                 xtskeyset = YES;
 949                                 goto _xts2key;
 950                         }
 951                 }
 952         }
 953         else if (rawkey == TFC_RAWKEY_ASKSTR) {
 954                 tfc_yesno xtskeyset = NO;
 955
 956                 pblk = key; n = sizeof(key);
 957 _xts2keyaskstr: memset(&getps, 0, sizeof(struct getpasswd_state));
 958                 getps.fd = getps.efd = -1;
 959                 getps.passwd = (char *)pblk;
 960                 getps.pwlen = n;
 961                 getps.echo = pw_prompt ? pw_prompt : "Enter rawkey (str): ";
 962                 getps.charfilter = (show_secrets == YES) ? getps_plain_filter : getps_filter;
 963                 getps.maskchar = (show_secrets == YES) ? 0 : 'x';
 964                 getps.flags = GETP_WAITFILL;
 965                 n = xgetpasswd(&getps);
 966                 if (n == NOSIZE) xerror(NO, NO, YES, "getting string rawkey");
 967                 if (n == ((size_t)-2)) xexit(1);
 968                 if (verbose) say_hint(pblk, n, "Raw string key hint");
 969                 if (ctr_mode == TFC_MODE_XTS) {
 970                         if (xtskeyset == NO) {
 971                                 pblk = xtskey; n = sizeof(xtskey);
 972                                 xtskeyset = YES;
 973                                 goto _xts2keyaskstr;
 974                         }
 975                 }
 976         }
 977         else if (rawkey == TFC_RAWKEY_ASKHEX) {
 978                 tfc_yesno xtskeyset = NO;
 979
 980                 pblk = key;
 981 _rawkey_hex_again:
 982                 memset(&getps, 0, sizeof(struct getpasswd_state));
 983                 getps.fd = getps.efd = -1;
 984                 getps.passwd = pwdask;
 985                 getps.pwlen = (TF_FROM_BITS(TFC_KEY_BITS)*2);
 986                 getps.echo = pw_prompt ? pw_prompt : "Enter rawkey (hex): ";
 987                 getps.charfilter = (show_secrets == YES) ? getps_plain_hex_filter : getps_hex_filter;
 988                 getps.maskchar = (show_secrets == YES) ? 0 : 'x';
 989                 getps.flags = GETP_WAITFILL;
 990                 n = xgetpasswd(&getps);
 991                 if (n == NOSIZE) xerror(NO, NO, YES, "getting hex rawkey");
 992                 if (n == ((size_t)-2)) xexit(1);
 993                 if (n % 2) {
 994                         tfc_esay("Please input even number of hex digits!");
 995                         goto _rawkey_hex_again;
 996                 }
 997                 hex2bin(pblk, pwdask);
 998                 memset(pwdask, 0, sizeof(pwdask));
 999                 if (verbose) say_hint(pblk, n/2, "Raw hex key hint");
1000                 if (ctr_mode == TFC_MODE_XTS) {
1001                         if (xtskeyset == NO) {
1002                                 pblk = xtskey;
1003                                 xtskeyset = YES;
1004                                 goto _rawkey_hex_again;
1005                         }
1006                 }
1007         }
1008         else if (password) {
1009 _pwdagain:      memset(&getps, 0, sizeof(struct getpasswd_state));
1010                 getps.fd = getps.efd = -1;
1011                 getps.passwd = pwdask;
1012                 getps.pwlen = sizeof(pwdask)-1;
1013                 getps.echo = pw_prompt ? pw_prompt : "Enter password: ";
1014                 getps.charfilter = (show_secrets == YES) ? getps_plain_filter : getps_filter;
1015                 getps.maskchar = (show_secrets == YES) ? 0 : 'x';
1016                 getps.flags = GETP_WAITFILL;
1017                 n = xgetpasswd(&getps);
1018                 if (n == NOSIZE) xerror(NO, NO, YES, "getting password");
1019                 if (n == ((size_t)-2)) xexit(1);
1020                 if (do_edcrypt == TFC_DO_ENCRYPT && no_repeat == NO) {
1021                         getps.fd = getps.efd = -1;
1022                         getps.passwd = pwdagain;
1023                         getps.pwlen = sizeof(pwdagain)-1;
1024                         getps.echo = "Enter it again: ";
1025                         getps.flags = GETP_WAITFILL;
1026                         n = xgetpasswd(&getps);
1027                         if (n == NOSIZE) xerror(NO, NO, YES, "getting password again");
1028                         if (n == ((size_t)-2)) xexit(1);
1029                         if (strncmp(pwdask, pwdagain, sizeof(pwdagain)-1) != 0) {
1030                                 tfc_esay("Passwords are different, try again");
1031                                 goto _pwdagain;
1032                         }
1033                 }
1034                 if (verbose) say_hint(pwdask, n, "Password hint");
1035                 skein(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, pwdask, n);
1036                 memset(pwdask, 0, sizeof(pwdask));
1037                 memset(pwdagain, 0, sizeof(pwdagain));
1038         }
1039         else {
1040                 if (skeinfd(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, kfd, keyoffset, maxkeylen) != YES)
1041                         xerror(NO, NO, YES, "hashing key");
1042         }
1043
1044         if (rawkey == NO) {
1045                 if (tfc_saltsz > 0) {
1046                         memcpy(tfc_salt+tfc_saltsz, key, TF_FROM_BITS(TFC_KEY_BITS));
1047                         skein(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, tfc_salt, tfc_saltsz+TF_FROM_BITS(TFC_KEY_BITS));
1048                 }
1049                 if (nr_turns > 1) for (x = 0; x < nr_turns; x++)
1050                         skein(key, TFC_KEY_BITS, mackey_opt ? mackey : NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
1051                 memset(tfc_salt, 0, TFC_MAX_SALT);
1052         }
1053
1054         if (ctr_mode == TFC_MODE_XTS && rawkey == NO) {
1055                 skein(xtskey, TF_NR_KEY_BITS, mackey_opt ? mackey : NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
1056         }
1057
1058         if (genkeyf) {
1059                 int krfd;
1060                 tfc_yesno xtskeyset = NO;
1061
1062                 pblk = key;
1063                 if (!strcmp(genkeyf, "-")) krfd = 1;
1064                 else krfd = xopen(genkeyf, O_WRONLY | O_CREAT | O_LARGEFILE | write_flags);
1065 _xts2genkey:    if (xwrite(krfd, pblk, TF_FROM_BITS(TFC_KEY_BITS)) == NOSIZE) xerror(NO, NO, YES, "%s", genkeyf);
1066                 if (do_fsync && fsync(krfd) == -1) xerror(NO, NO, YES, "%s", genkeyf);
1067                 if (verbose && xtskeyset == NO) {
1068                         tfc_esay("%s: password hashing done", tfc_format_pid(progname));
1069                         tfc_esay("%s: rawkey written to %s.", tfc_format_pid(progname), genkeyf);
1070                         tfc_esay("%s: Have a nice day!", tfc_format_pid(progname));
1071                 }
1072
1073                 if (ctr_mode == TFC_MODE_XTS) {
1074                         if (xtskeyset == NO) {
1075                                 pblk = xtskey;
1076                                 xtskeyset = YES;
1077                                 goto _xts2genkey;
1078                         }
1079                 }
1080
1081                 fchmod(krfd, 0600);
1082                 xclose(krfd);
1083                 xexit(0);
1084         }
1085
1086         if (do_mac != NO) {
1087                 if (mackey_opt == TFC_MACKEY_RAWKEY) skein(mackey, TF_MAX_BITS, key, key, TF_FROM_BITS(TFC_KEY_BITS));
1088                 if (verbose) tfc_esay("%s: doing MAC calculation, processing speed "
1089                         "will be slower.", tfc_format_pid(progname));
1090                 if (mackey_opt) skein_init_key(&sk, mackey, macbits);
1091                 else skein_init(&sk, macbits);
1092         }
1093
1094         if (!counter_file && counter_opt <= TFC_CTR_SHOW && ctr_mode != TFC_MODE_ECB) {
1095                 skein(ctr, TF_TO_BITS(ctrsz), mackey_opt ? mackey : NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
1096         }
1097
1098         tf_convkey(key);
1099         if (ctr_mode == TFC_MODE_XTS) tf_convkey(xtskey);
1100         if (do_full_key == NO) {
1101                 if (!tweakf) skein(tweak, TF_NR_TWEAK_BITS, NULL, key, TF_FROM_BITS(TFC_KEY_BITS));
1102                 tf_tweak_set(key, tweak);
1103         }
1104         if (ctr_mode == TFC_MODE_ECB) goto _ctrskip2;
1105
1106         if (counter_opt == TFC_CTR_ZERO) memset(ctr, 0, ctrsz);
1107
1108         tfc_data_to_words64(&iseek_blocks, sizeof(iseek_blocks));
1109         tf_ctr_set(ctr, &iseek_blocks, sizeof(iseek_blocks));
1110         if (do_mac == TFC_MAC_JUST_VRFY2) memcpy(svctr, ctr, TF_BLOCK_SIZE);
1111
1112         if (counter_opt == TFC_CTR_SHOW) {
1113                 switch (do_outfmt) {
1114                         case TFC_OUTFMT_B64: tfc_printbase64(stderr, ctr, ctrsz, YES); break;
1115                         case TFC_OUTFMT_RAW: xwrite(2, ctr, ctrsz); break;
1116                         case TFC_OUTFMT_HEX: mehexdump(ctr, ctrsz, ctrsz, YES); break;
1117                 }
1118         }
1119         else if (counter_opt == TFC_CTR_RAND) tfc_getrandom(ctr, ctrsz);
1120
1121 _ctrskip2:
1122         if (kfd != -1) {
1123                 xclose(kfd);
1124                 kfd = -1;
1125         }
1126         if (verbose) tfc_esay("%s: password hashing done", tfc_format_pid(progname));
1127
1128         if (overwrite_source && srcfname) argv[idx] = srcfname;
1129
1130 _plain:
1131         if (argv[idx]) {
1132                 if (!strcmp(argv[idx], "-")) dfd = 1;
1133                 else dfd = xxopen(YES, argv[idx], O_RDWR | O_LARGEFILE | write_flags);
1134                 if (dfd == -1) dfd = xopen(argv[idx], O_WRONLY | O_CREAT | O_LARGEFILE | write_flags);
1135                 dstfname = argv[idx];
1136                 idx++;
1137         }
1138
1139         if (oseek) {
1140                 if (lseek(dfd, oseek, SEEK_SET) == -1)
1141                         xerror(ignore_seek_errors, NO, NO, "%s: seek failed", dstfname);
1142         }
1143
1144         for (x = 1; x < NSIG; x++) signal(x, SIG_IGN);
1145         memset(&sigact, 0, sizeof(sigact));
1146         sigact.sa_flags = SA_RESTART;
1147         sigact.sa_handler = print_crypt_status;
1148         sigaction(SIGUSR1, &sigact, NULL);
1149         sigaction(SIGALRM, &sigact, NULL);
1150         if (status_timer) setup_next_alarm(status_timer > 1000000 ? 1000000 : status_timer);
1151         sigact.sa_handler = change_status_width;
1152         sigaction(SIGQUIT, &sigact, NULL);
1153         sigact.sa_handler = change_status_timer;
1154         sigaction(SIGUSR2, &sigact, NULL);
1155         if (quiet == NO) {
1156                 sigact.sa_handler = print_crypt_status;
1157                 sigaction(SIGINT, &sigact, NULL);
1158                 sigaction(SIGTERM, &sigact, NULL);
1159                 sigaction(SIGTSTP, &sigact, NULL);
1160         }
1161         else {
1162                 sigact.sa_handler = exit_sigterm;
1163                 sigaction(SIGINT, &sigact, NULL);
1164                 sigaction(SIGTERM, &sigact, NULL);
1165                 sigact.sa_handler = handle_sigtstp;
1166                 sigaction(SIGTSTP, &sigact, NULL);
1167         }
1168         memset(&sigact, 0, sizeof(struct sigaction));
1169
1170         tfc_getcurtime(&delta_time);
1171
1172         errno = 0;
1173         if (counter_opt == TFC_CTR_RAND && ctr_mode != TFC_MODE_ECB) {
1174                 pblk = ctr;
1175                 lio = lrem = ctrsz;
1176                 ldone = 0;
1177 _ctrwagain:     lio = xwrite(dfd, pblk, lrem);
1178                 if (lio != NOSIZE) ldone += lio;
1179                 else xerror(NO, NO, NO, "%s", dstfname);
1180                 if (do_fsync && fsync(dfd) == -1) xerror(NO, NO, NO, "%s", dstfname);
1181                 if (lio < lrem) {
1182                         pblk += lio;
1183                         lrem -= lio;
1184                         goto _ctrwagain;
1185                 }
1186                 total_written_dst += ldone;
1187                 total_processed_dst += ldone;
1188                 delta_processed += ldone;
1189         }
1190
1191         if (ctr_mode == TFC_MODE_STREAM) tfe_init_iv(&tfe, key, ctr);
1192
1193         if (do_mac == TFC_MAC_JUST_VRFY2) {
1194                 rwd = tfc_fdgetpos(sfd);
1195                 if (rwd == NOFSIZE) {
1196                         tfc_esay("%s: WARNING: input is not seekable, disabling MAC testing mode", tfc_format_pid(progname));
1197                         do_mac = TFC_MAC_VRFY;
1198                 }
1199                 goto _nodecrypt_again_vrfy2;
1200
1201 _decrypt_again_vrfy2:
1202                 if (lseek(sfd, (off_t)rwd, SEEK_SET) == ((off_t)-1)) {
1203                         xerror(ignore_seek_errors, NO, YES, "MAC testing seek failed");
1204                 }
1205                 total_processed_src = rwd;
1206                 memcpy(ctr, svctr, TF_BLOCK_SIZE);
1207                 if (ctr_mode == TFC_MODE_STREAM) tfe_init_iv(&tfe, key, ctr);
1208                 memset(svctr, 0, TF_BLOCK_SIZE);
1209         }
1210
1211 #define FLFD(x, y) (flipfd ? y : x)
1212 _nodecrypt_again_vrfy2:
1213         loopcnt = 1;
1214         errno = 0;
1215         do_stop = NO;
1216         flipfd = NO;
1217         while (1) {
1218                 if (do_stop) break;
1219                 if (ctr_mode == TFC_MODE_XOR) flipfd = NO;
1220                 pblk = srcblk;
1221 _nextblk:       ldone = 0;
1222                 lrem = lblock = blk_len_adj(maxlen, total_processed_src, blksize);
1223                 if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(FLFD(sfd, kfd));
1224 _ragain:        lio = xread(FLFD(sfd, kfd), pblk, lrem);
1225                 if (lio == 0) {
1226                         if ((do_read_loops != 0 && FLFD(sfd, kfd) != 0) && (loopcnt < do_read_loops)) {
1227                                 lseek(FLFD(sfd, kfd), 0L, SEEK_SET);
1228                                 loopcnt++;
1229                                 goto _ragain;
1230                         }
1231
1232                         do_stop = YES;
1233                 }
1234                 if (lio != NOSIZE) ldone += lio;
1235                 else {
1236                         if (errno != EIO && catch_all_errors != YES)
1237                                 xerror(NO, NO, NO, "%s", srcfname);
1238                         switch (error_action) {
1239                                 case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", srcfname); goto _ragain; break;
1240                                 case TFC_ERRACT_SYNC:
1241                                 case TFC_ERRACT_LSYNC:
1242                                         xerror(YES, NO, NO, "%s", srcfname);
1243                                         lio = ldone = lrem = lblock;
1244                                         memset(srcblk, 0, lio);
1245                                         if (rdpos == NOFSIZE) lseek(FLFD(sfd, kfd), lio, SEEK_CUR);
1246                                         else lseek(FLFD(sfd, kfd), rdpos + lio, SEEK_SET);
1247                                         break;
1248                                 default: xerror(NO, NO, NO, "%s", srcfname); break;
1249                         }
1250                 }
1251                 if (unbuffered == NO && lio && lio < lrem) {
1252                         pblk += lio;
1253                         lrem -= lio;
1254                         goto _ragain;
1255                 }
1256                 total_processed_src += ldone;
1257
1258                 if (do_pad && (ldone % TF_BLOCK_SIZE)) {
1259                         size_t orig = ldone;
1260                         ldone += (TF_BLOCK_SIZE - (ldone % TF_BLOCK_SIZE));
1261                         if (ldone > blksize) ldone = blksize;
1262                         memset(srcblk+orig, 0, sizeof(srcblk)-orig);
1263                 }
1264
1265                 if (ctr_mode == TFC_MODE_XOR && flipfd == NO) {
1266                         if (do_stop) blksize = ldone;
1267                         flipfd = YES;
1268                         pblk = dstblk;
1269                         goto _nextblk;
1270                 }
1271
1272                 if (do_mac == TFC_MAC_SIGN) skein_update(&sk, srcblk, ldone);
1273
1274                 if (ctr_mode == TFC_MODE_CTR) tf_ctr_crypt(key, ctr, dstblk, srcblk, ldone);
1275                 else if (ctr_mode == TFC_MODE_STREAM) tf_stream_crypt(&tfe, dstblk, srcblk, ldone);
1276                 else if (ctr_mode == TFC_MODE_XTS && do_edcrypt == TFC_DO_ENCRYPT)
1277                         tf_xts_encrypt(key, xtskey, ctr, dstblk, srcblk, ldone, xtsblocks);
1278                 else if (ctr_mode == TFC_MODE_XTS && do_edcrypt == TFC_DO_DECRYPT)
1279                         tf_xts_decrypt(key, xtskey, ctr, dstblk, srcblk, ldone, xtsblocks);
1280                 else if (ctr_mode == TFC_MODE_ECB && do_edcrypt == TFC_DO_ENCRYPT)
1281                         tf_ecb_encrypt(key, dstblk, srcblk, ldone);
1282                 else if (ctr_mode == TFC_MODE_ECB && do_edcrypt == TFC_DO_DECRYPT)
1283                         tf_ecb_decrypt(key, dstblk, srcblk, ldone);
1284                 else if (ctr_mode == TFC_MODE_CBC && do_edcrypt == TFC_DO_ENCRYPT)
1285                         tf_cbc_encrypt(key, ctr, dstblk, srcblk, ldone);
1286                 else if (ctr_mode == TFC_MODE_CBC && do_edcrypt == TFC_DO_DECRYPT)
1287                         tf_cbc_decrypt(key, ctr, dstblk, srcblk, ldone);
1288                 else if (ctr_mode == TFC_MODE_PCBC && do_edcrypt == TFC_DO_ENCRYPT)
1289                         tf_pcbc_encrypt(key, ctr, dstblk, srcblk, ldone);
1290                 else if (ctr_mode == TFC_MODE_PCBC && do_edcrypt == TFC_DO_DECRYPT)
1291                         tf_pcbc_decrypt(key, ctr, dstblk, srcblk, ldone);
1292
1293                 else if (ctr_mode == TFC_MODE_PLAIN)
1294                         memcpy(dstblk, srcblk, ldone);
1295
1296                 else if (ctr_mode == TFC_MODE_XOR)
1297                         xor_block(dstblk, srcblk, ldone);
1298
1299                 if (do_mac >= TFC_MAC_VRFY) skein_update(&sk, dstblk, ldone);
1300                 if (do_mac >= TFC_MAC_JUST_VRFY) goto _nowrite;
1301
1302                 pblk = dstblk;
1303                 lrem = ldone;
1304                 ldone = 0;
1305 _wagain:        lio = xwrite(dfd, pblk, lrem);
1306                 if (lio != NOSIZE) ldone += lio;
1307                 else xerror(NO, NO, NO, "%s", dstfname);
1308                 if (do_fsync && fsync(dfd) == -1) xerror(NO, NO, NO, "%s", dstfname);
1309                 if (lio < lrem) {
1310                         pblk += lio;
1311                         lrem -= lio;
1312                         goto _wagain;
1313                 }
1314                 total_written_dst += ldone;
1315 _nowrite:       total_processed_dst += ldone;
1316                 delta_processed += ldone;
1317
1318                 if (maxlen != NOFSIZE && total_processed_src >= maxlen) {
1319                         do_stop = YES;
1320                         break;
1321                 }
1322         }
1323
1324         if (verbose && status_timer && do_statline_dynamic == YES && statline_was_shown == YES) tfc_esay("\n");
1325
1326         errno = 0;
1327         if (do_mac >= TFC_MAC_VRFY) {
1328                 if (!do_mac_file) {
1329                         pblk = macvrfy;
1330                         ldone = 0;
1331                         lrem = lblock = TF_FROM_BITS(macbits);
1332                         if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(sfd);
1333 _macragain:             lio = xread(sfd, pblk, lrem);
1334                         if (lio != NOSIZE) ldone += lio;
1335                         else {
1336                                 if (errno != EIO && catch_all_errors != YES)
1337                                         xerror(NO, NO, NO, "%s", srcfname);
1338                                 switch (error_action) {
1339                                         case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", srcfname); goto _macragain; break;
1340                                         case TFC_ERRACT_SYNC:
1341                                         case TFC_ERRACT_LSYNC:
1342                                                 xerror(YES, NO, NO, "%s", srcfname);
1343                                                 lio = ldone = lrem = lblock;
1344                                                 memset(macvrfy, 0, lio);
1345                                                 if (rdpos == NOFSIZE) lseek(sfd, lio, SEEK_CUR);
1346                                                 else lseek(sfd, rdpos + lio, SEEK_SET);
1347                                                 break;
1348                                         default: xerror(NO, NO, NO, "%s", srcfname); break;
1349                                 }
1350                         }
1351                         if (lio && lio < lrem) {
1352                                 pblk += lio;
1353                                 lrem -= lio;
1354                                 goto _macragain;
1355                         }
1356                         total_processed_src += ldone;
1357                 }
1358                 else {
1359                         int mfd;
1360
1361                         if (!strcmp(do_mac_file, "-")) mfd = 0;
1362                         else mfd = xopen(do_mac_file, O_RDONLY | O_LARGEFILE);
1363                         lio = ldone = xread(mfd, tmpdata, sizeof(tmpdata));
1364                         if (lio == NOSIZE) xerror(NO, NO, YES, "%s", do_mac_file);
1365                         if (!memcmp(tmpdata, TFC_ASCII_TFC_MAC_FOURCC, TFC_ASCII_TFC_MAC_FOURCC_LEN)) {
1366                                 memmove(tmpdata, tmpdata+TFC_ASCII_TFC_MAC_FOURCC_LEN,
1367                                         sizeof(tmpdata)-TFC_ASCII_TFC_MAC_FOURCC_LEN);
1368                                 lio = TF_FROM_BITS(macbits);
1369                                 base64_decode((char *)macvrfy, lio, (char *)tmpdata, sizeof(tmpdata));
1370                         }
1371                         else memcpy(macvrfy, tmpdata, TF_FROM_BITS(macbits));
1372                         xclose(mfd);
1373                 }
1374
1375                 if (ldone < TF_FROM_BITS(macbits)) {
1376                         if (quiet == NO) tfc_esay("%s: short signature (%zu), "
1377                                 "not verifying", tfc_format_pid(progname), ldone);
1378                         exitcode = 1;
1379                         goto _shortmac;
1380                 }
1381
1382                 skein_final(macresult, &sk);
1383
1384                 if (ctr_mode == TFC_MODE_CTR) tf_ctr_crypt(key, ctr, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1385                 else if (ctr_mode == TFC_MODE_STREAM) tf_stream_crypt(&tfe, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1386                 else if (ctr_mode == TFC_MODE_XTS) tf_xts_decrypt(key, xtskey, ctr, tmpdata, macvrfy, TF_FROM_BITS(macbits), xtsblocks);
1387                 else if (ctr_mode == TFC_MODE_ECB) tf_ecb_decrypt(key, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1388                 else if (ctr_mode == TFC_MODE_CBC) tf_cbc_decrypt(key, ctr, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1389                 else if (ctr_mode == TFC_MODE_PCBC) tf_pcbc_decrypt(key, ctr, tmpdata, macvrfy, TF_FROM_BITS(macbits));
1390
1391                 if (!memcmp(tmpdata, macresult, TF_FROM_BITS(macbits))) {
1392                         if (quiet == NO) {
1393                                 tfc_esay("%s: signature is good", tfc_format_pid(progname));
1394                                 if (verbose) {
1395                                         if (do_outfmt == TFC_OUTFMT_B64) tfc_printbase64(stderr, macresult, TF_FROM_BITS(macbits), YES);
1396                                         else mehexdump(macresult, TF_FROM_BITS(macbits), TF_FROM_BITS(macbits), YES);
1397                                 }
1398                         }
1399                         if (do_mac == TFC_MAC_JUST_VRFY2) {
1400                                 if (verbose) tfc_esay("%s: -u: MAC signature is valid, proceeding with decrypting it again", tfc_format_pid(progname));
1401                                 maxlen = total_processed_src - SKEIN_DIGEST_SIZE;
1402                                 do_mac = TFC_MAC_DROP2;
1403                                 goto _decrypt_again_vrfy2;
1404                         }
1405                 }
1406                 else {
1407                         if (quiet == NO) {
1408                                 tfc_esay("%s: signature is BAD: "
1409                                 "wrong password, key, mode, or file is not signed", tfc_format_pid(progname));
1410                                 if (do_mac == TFC_MAC_JUST_VRFY2) tfc_esay("%s: -u: MAC signature is invalid, not decrypting it again", tfc_format_pid(progname));
1411                         }
1412                         exitcode = 1;
1413                 }
1414
1415 _shortmac:      memset(macvrfy, 0, sizeof(macvrfy));
1416                 memset(macresult, 0, sizeof(macresult));
1417                 memset(tmpdata, 0, sizeof(tmpdata));
1418         }
1419         else if (do_mac == TFC_MAC_SIGN) {
1420                 skein_final(macresult, &sk);
1421
1422                 if (ctr_mode == TFC_MODE_CTR) tf_ctr_crypt(key, ctr, tmpdata, macresult, TF_FROM_BITS(macbits));
1423                 else if (ctr_mode == TFC_MODE_STREAM) tf_stream_crypt(&tfe, tmpdata, macresult, TF_FROM_BITS(macbits));
1424                 else if (ctr_mode == TFC_MODE_XTS) tf_xts_encrypt(key, xtskey, ctr, tmpdata, macresult, TF_FROM_BITS(macbits), xtsblocks);
1425                 else if (ctr_mode == TFC_MODE_ECB) tf_ecb_encrypt(key, tmpdata, macresult, TF_FROM_BITS(macbits));
1426                 else if (ctr_mode == TFC_MODE_CBC) tf_cbc_encrypt(key, ctr, tmpdata, macresult, TF_FROM_BITS(macbits));
1427                 else if (ctr_mode == TFC_MODE_PCBC) tf_pcbc_encrypt(key, ctr, tmpdata, macresult, TF_FROM_BITS(macbits));
1428                 memset(macresult, 0, sizeof(macresult));
1429
1430                 if (!do_mac_file) {
1431                         pblk = tmpdata;
1432                         lio = lrem = TF_FROM_BITS(macbits);
1433                         ldone = 0;
1434 _macwagain:             lio = xwrite(dfd, pblk, lrem);
1435                         if (lio != NOSIZE) ldone += lio;
1436                         else xerror(NO, NO, NO, "%s", dstfname);
1437                         if (do_fsync && fsync(dfd) == -1) xerror(NO, NO, NO, "%s", dstfname);
1438                         if (lio < lrem) {
1439                                 pblk += lio;
1440                                 lrem -= lio;
1441                                 goto _macwagain;
1442                         }
1443                         total_written_dst += ldone;
1444                         total_processed_dst += ldone;
1445                         delta_processed += ldone;
1446                 }
1447                 else {
1448                         int mfd;
1449
1450                         if (!strcmp(do_mac_file, "-")) mfd = 1;
1451                         else mfd = xopen(do_mac_file, O_WRONLY | O_CREAT | O_LARGEFILE | write_flags);
1452                         if (do_outfmt == TFC_OUTFMT_B64) {
1453                                 memcpy(macvrfy, tmpdata, TF_FROM_BITS(macbits));
1454                                 memset(tmpdata, 0, TFC_TMPSIZE);
1455                                 memcpy(tmpdata, TFC_ASCII_TFC_MAC_FOURCC, TFC_ASCII_TFC_MAC_FOURCC_LEN);
1456                                 base64_encode((char *)tmpdata+TFC_ASCII_TFC_MAC_FOURCC_LEN, (char *)macvrfy, TF_FROM_BITS(macbits));
1457                                 lrem = strnlen((char *)tmpdata, sizeof(tmpdata));
1458                                 if (lrem) {
1459                                         tmpdata[lrem] = '\n';
1460                                         lrem++;
1461                                 }
1462                                 lio = xwrite(mfd, tmpdata, lrem);
1463                         }
1464                         else lio = xwrite(mfd, tmpdata, TF_FROM_BITS(macbits));
1465                         if (lio == NOSIZE) xerror(NO, NO, YES, "%s", do_mac_file);
1466                         if (do_fsync && fsync(mfd) == -1) xerror(NO, NO, YES, "%s", do_mac_file);
1467                         xclose(mfd);
1468                 }
1469
1470                 memset(macvrfy, 0, sizeof(macvrfy));
1471                 memset(macresult, 0, sizeof(macresult));
1472                 memset(tmpdata, 0, sizeof(tmpdata));
1473         }
1474         else if (do_mac == TFC_MAC_DROP2) total_processed_src += SKEIN_DIGEST_SIZE;
1475
1476         if (verbose || status_timer || (do_stop == YES && quiet == NO)) print_crypt_status(TFC_SIGLAST);
1477
1478         xexit(exitcode);
1479         return -1;
1480 }