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tfcrypt.c
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tfcrypt.c
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/*
* tfcrypt -- high security Threefish encryption tool.
*
* tfcrypt is copyrighted:
* Copyright (C) 2012-2019 Andrey Rys. All rights reserved.
*
* tfcrypt is licensed to you under the terms of std. MIT/X11 license:
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "tfcrypt.h"
static tfc_byte svctr[TF_BLOCK_SIZE];
static tfc_fsize rwd, do_read_loops, loopcnt;
static tfc_yesno unbuffered;
static void open_log(const char *logfile)
{
int fd;
tfc_yesno ro;
if (!strcmp(logfile, "-")) return;
ro = read_only;
read_only = NO;
fd = xopen(logfile, O_WRONLY | O_CREAT | O_LARGEFILE | O_TRUNC);
read_only = ro;
xclose(2);
if (dup2(fd, 2) == -1) xexit(2);
xclose(fd);
do_statline_dynamic = NO;
}
static int getps_filter(struct getpasswd_state *getps, char chr, size_t pos)
{
if (chr == '\x03') {
getps->retn = ((size_t)-2);
return 6;
}
return 1;
}
static int getps_hex_filter(struct getpasswd_state *getps, char chr, size_t pos)
{
if (chr == '\x03') {
getps->retn = ((size_t)-2);
return 6;
}
if (chr >= '0' && chr <= '9') return 1;
if (chr >= 'a' && chr <= 'f') return 1;
if (chr >= 'A' && chr <= 'F') return 1;
if (chr == '\x7f' || chr == '\x08'
|| chr == '\x15' || chr == '\x17') return 1;
return 0;
}
static inline int isctrlchr(int c)
{
if (c == 9) return 0;
if (c >= 0 && c <= 31) return 1;
if (c == 127) return 1;
return 0;
}
static int getps_plain_filter(struct getpasswd_state *getps, char chr, size_t pos)
{
int x;
x = getps_filter(getps, chr, pos);
if (x != 1) return x;
if (pos < getps->pwlen && !isctrlchr(chr))
write(getps->efd, &chr, sizeof(char));
return 1;
}
static int getps_plain_hex_filter(struct getpasswd_state *getps, char chr, size_t pos)
{
int x;
x = getps_hex_filter(getps, chr, pos);
if (x != 1) return x;
if (pos < getps->pwlen && !isctrlchr(chr))
write(getps->efd, &chr, sizeof(char));
return 1;
}
static void make_hint(void *hint, size_t szhint, const void *data, size_t szdata)
{
char t[TF_FROM_BITS(TF_MAX_BITS)];
skein(t, TF_MAX_BITS, NULL, data, szdata);
xor_shrink(hint, szhint, t, sizeof(t));
memset(t, 0, sizeof(t));
}
static void raw_say_hint(void *hint, size_t szhint, const void *data, size_t szdata, const char *prompt)
{
make_hint(hint, szhint, data, szdata);
if (prompt) tfc_nfsay(stderr, "%s: ", prompt);
mehexdump(hint, szhint, szhint, 1);
memset(hint, 0, szhint);
}
static void say_hint(const void *data, size_t szdata, const char *prompt)
{
char t[TF_SIZE_UNIT];
raw_say_hint(t, TF_SIZE_UNIT, data, szdata, prompt);
/* t[] is erased (automatically) */
}
int main(int argc, char **argv)
{
tfc_yesno flipfd;
int c;
double td;
char *s, *d, *t, *stoi;
size_t x, n;
progpid = getpid();
progname = basename(argv[0]);
if (!isatty(2)) do_statline_dynamic = NO;
s = (char *)srcblk;
d = getenv("HOME");
if (!d) d = "";
n = PATH_MAX > sizeof(srcblk) ? sizeof(srcblk) : PATH_MAX;
if (xstrlcpy(s, d, n) >= n) goto _baddfname;
if (xstrlcat(s, "/.tfcrypt.defs", n) >= n) goto _baddfname;
read_defaults(s, YES);
_baddfname:
memset(s, 0, n);
if (!strcmp(progname, "iotool")) {
do_edcrypt = TFC_DO_PLAIN;
ctr_mode = TFC_MODE_PLAIN;
}
if (!strcmp(progname, "xor")) {
do_edcrypt = TFC_DO_PLAIN;
ctr_mode = TFC_MODE_XOR;
/* xor: default to stdin if invoked without args */
kfd = 0;
}
opterr = 0;
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) {
switch (c) {
case 'L':
read_defaults(optarg, NO);
break;
case 's':
saltf = optarg;
break;
case 'r':
randsource = optarg;
break;
case 'j':
case 'g':
if (c == 'j') ctr_mode = TFC_MODE_CTR;
else if (c == 'g') ctr_mode = TFC_MODE_STREAM;
if (do_edcrypt == TFC_DO_DECRYPT) counter_opt = TFC_CTR_HEAD;
else if (do_edcrypt == TFC_DO_ENCRYPT) counter_opt = TFC_CTR_RAND;
else xerror(NO, YES, YES, "plain mode was selected with -%c, cannot continue", c);
break;
case 'c':
if (!strcasecmp(optarg, "show"))
counter_opt = TFC_CTR_SHOW;
else if (!strcasecmp(optarg, "head"))
counter_opt = TFC_CTR_HEAD;
else if (!strcasecmp(optarg, "rand"))
counter_opt = TFC_CTR_RAND;
else if (!strcasecmp(optarg, "zero"))
counter_opt = TFC_CTR_ZERO;
else if (strchr(optarg, ':')) {
char *ss, chr;
counter_opt = TFC_CTR_SSET;
n = sizeof(ctr);
s = d = optarg; t = NULL;
while ((s = strtok_r(d, ",", &t))) {
if (d) d = NULL;
if (n == 0) break;
ss = strchr(s, ':');
if (!ss) continue;
*ss = 0; ss++;
chr = (char)strtoul(s, &stoi, 16);
if (!str_empty(stoi)) continue;
x = (size_t)strtoul(ss, &stoi, 10);
if (!str_empty(stoi)) continue;
if (x > n) x = n;
memset(ctr+(sizeof(ctr)-n), (int)chr, x);
n -= x;
}
}
else counter_file = sksum_hashlist_file = optarg;
break;
case 'C':
if (!strcasecmp(optarg, "ctr"))
ctr_mode = TFC_MODE_CTR;
else if (!strcasecmp(optarg, "stream"))
ctr_mode = TFC_MODE_STREAM;
else if (!strcasecmp(optarg, "cbc"))
ctr_mode = TFC_MODE_CBC;
else if (!strcasecmp(optarg, "pcbc"))
ctr_mode = TFC_MODE_PCBC;
else if (!strcasecmp(optarg, "ecb"))
ctr_mode = TFC_MODE_ECB;
else if (!strcasecmp(optarg, "xts"))
ctr_mode = TFC_MODE_XTS;
else xerror(NO, YES, YES, "%s: invalid mode of operation", optarg);
break;
case 'P':
case 'X':
do_edcrypt = TFC_DO_PLAIN;
if (c == 'X') {
ctr_mode = TFC_MODE_XOR;
/* xor: default to stdin if invoked without args */
kfd = 0;
}
else ctr_mode = TFC_MODE_PLAIN;
break;
case 'e':
if (do_edcrypt != TFC_DO_PLAIN) do_edcrypt = TFC_DO_ENCRYPT;
break;
case 'd':
if (do_edcrypt != TFC_DO_PLAIN) do_edcrypt = TFC_DO_DECRYPT;
break;
case 'D':
macbits = strtoul(optarg, &stoi, 10);
if (macbits == 0 || !str_empty(stoi) || macbits < 8
|| macbits > TF_MAX_BITS || macbits % 8)
xerror(NO, YES, YES, "%s: invalid MAC bits setting", optarg);
break;
case 'n':
nr_turns = sksum_turns = strtoul(optarg, &stoi, 10);
if (!str_empty(stoi)) xerror(NO, YES, YES, "%s: invalid number of turns", optarg);
break;
case 'U':
if (!strcasecmp(optarg, "key"))
mackey_opt = TFC_MACKEY_RAWKEY;
else if (!strcasecmp(optarg, "pwd"))
mackey_opt = TFC_MACKEY_PASSWORD;
else {
mackey_opt = TFC_MACKEY_FILE;
mackeyf = optarg;
}
break;
case 'p':
password = YES;
break;
case 'k':
rawkey = TFC_RAWKEY_KEYFILE;
break;
case 'z':
rawkey = TFC_RAWKEY_ASKSTR;
break;
case 'x':
rawkey = TFC_RAWKEY_ASKHEX;
break;
case 'K':
verbose = YES;
genkeyf = optarg;
break;
case 't':
tweakf = optarg;
do_full_key = NO;
break;
case 'l':
if (maxlen != NOFSIZE) break;
maxlen = tfc_humanfsize(optarg, &stoi);
if (!str_empty(stoi)) {
maxlen = tfc_fnamesize(optarg, YES);
maxlen = tfc_modifysize(maxlen, strchr(optarg, ':'));
if (maxlen == NOFSIZE) xerror(NO, YES, YES,
"%s: invalid count value", optarg);
}
else maxlen = tfc_modifysize(maxlen, strchr(optarg, ':'));
if (counter_opt == TFC_CTR_HEAD)
maxlen += TF_BLOCK_SIZE;
break;
case 'w':
overwrite_source = YES;
break;
case 'E':
if (!strcmp(optarg, "xall")) {
catch_all_errors = YES;
break;
}
if (!strcmp(optarg, "xseek")) {
ignore_seek_errors = YES;
break;
}
if (!strcmp(optarg, "exit"))
error_action = TFC_ERRACT_EXIT;
else if (!strncmp(optarg, "cont", 4))
error_action = TFC_ERRACT_CONT;
else if (!strcmp(optarg, "sync"))
error_action = TFC_ERRACT_SYNC;
else if (!strcmp(optarg, "lsync"))
error_action = TFC_ERRACT_LSYNC;
else xerror(NO, YES, YES, "invalid error action %s specified", optarg);
break;
case 'o':
open_log(optarg);
break;
case 'O':
s = d = optarg; t = NULL;
while ((s = strtok_r(d, ",", &t))) {
if (d) d = NULL;
if (!strcmp(s, "sync"))
write_flags |= O_SYNC;
else if (!strcmp(s, "trunc"))
write_flags |= O_TRUNC;
else if (!strcmp(s, "append"))
write_flags |= O_APPEND;
else if (!strcmp(s, "fsync"))
do_fsync = YES;
else if (!strcmp(s, "pad"))
do_pad = YES;
else if (!strcmp(s, "ro"))
read_only = YES;
else if (!strcmp(s, "rw"))
read_only = NO;
else if (!strcmp(s, "xtime"))
do_preserve_time = YES;
else if (!strcmp(s, "gibsize"))
do_stats_in_gibs = YES;
else if (!strcmp(s, "plainstats"))
do_statline_dynamic = NO;
else if (!strcmp(s, "statless"))
do_less_stats = YES;
else if (!strcmp(s, "norepeat"))
no_repeat = YES;
else if (!strncmp(s, "prompt", 6) && *(s+6) == '=')
pw_prompt = s+7;
else if (!strncmp(s, "macprompt", 9) && *(s+9) == '=')
mac_pw_prompt = s+10;
else if (!strcmp(s, "shorthex"))
do_full_hexdump = NO;
else if (!strcmp(s, "fullkey"))
do_full_key = YES;
else if (!strcmp(s, "showsecrets"))
show_secrets = YES;
else if (!strcmp(s, "finished"))
show_when_done = YES;
else if (!strcmp(s, "pid"))
show_pid = YES;
else if (!strcmp(s, "nobuf")) {
if (!tfc_is_freestream(ctr_mode)) xerror(NO, YES, YES,
"cannot activate unbuffered mode for non-stream cipher mode %s!",
tfc_modename(ctr_mode));
else unbuffered = YES;
}
else if (!strncmp(s, "readloops", 9) && *(s+9) == '=') {
do_read_loops = tfc_humanfsize(s+10, &stoi);
if (!str_empty(stoi)) do_read_loops = NOSIZE;
}
else if (!strncmp(s, "logfile", 7) && *(s+7) == '=')
open_log(s+8);
else if (!strncmp(s, "iobs", 4) && *(s+4) == '=') {
s += 5;
blksize = (size_t)tfc_humanfsize(s, &stoi);
if (!str_empty(stoi)) {
blksize = (size_t)tfc_fnamesize(s, YES);
blksize = (size_t)tfc_modifysize((tfc_fsize)blksize, strchr(s, ':'));
if (blksize == NOSIZE) xerror(NO, YES, YES,
"%s: invalid block size value", s);
}
else blksize = (size_t)tfc_modifysize((tfc_fsize)blksize, strchr(s, ':'));
if (!tfc_is_freestream(ctr_mode) && blksize < TF_BLOCK_SIZE) xerror(NO, YES, YES,
"%s: block size is lesser than TF_BLOCK_SIZE (%u bytes)", s, TFC_U(TF_BLOCK_SIZE));
if (blksize > TFC_BLKSIZE) xerror(NO, YES, YES,
"%s: block size exceeds %u bytes",
s, TFC_U(TFC_BLKSIZE));
}
else if (!strncmp(s, "xtsblocks", 9) && *(s+9) == '=') {
s += 10;
xtsblocks = (size_t)tfc_humanfsize(s, &stoi);
if (!str_empty(stoi)) {
xtsblocks = (size_t)tfc_fnamesize(s, YES);
xtsblocks = (size_t)tfc_modifysize((tfc_fsize)xtsblocks, strchr(s, ':'));
if (xtsblocks == NOSIZE) xerror(NO, YES, YES,
"%s: invalid blocks per xts block value", s);
}
else xtsblocks = (size_t)tfc_modifysize((tfc_fsize)xtsblocks, strchr(s, ':'));
if (TFC_BLKSIZE % xtsblocks) xerror(NO, YES, YES,
"%s: nr of blocks per xts block is not round to %u bytes",
s, TFC_U(TFC_BLKSIZE));
if ((xtsblocks * TF_BLOCK_SIZE) > TFC_BLKSIZE) xerror(NO, YES, YES,
"%s: nr of blocks per xts block exceeds %u bytes",
s, TFC_U(TFC_BLKSIZE));
}
else if (!strncmp(s, "iseek", 5) && *(s+5) == '=') {
s += 6;
iseek = tfc_humanfsize(s, &stoi);
if (!str_empty(stoi)) {
iseek = tfc_fnamesize(s, YES);
iseek = tfc_modifysize(iseek, strchr(s, ':'));
if (iseek == NOFSIZE) xerror(NO, YES, YES,
"%s: invalid iseek value", s);
}
else iseek = tfc_modifysize(iseek, strchr(s, ':'));
if (do_edcrypt != TFC_DO_PLAIN && iseek % TF_BLOCK_SIZE)
xerror(NO, YES, YES,
"%s: not round to TF block size "
"of %u bytes",
s, TFC_U(TF_BLOCK_SIZE));
iseek_blocks = iseek / TF_BLOCK_SIZE;
}
else if (!strncmp(s, "ixseek", 6) && *(s+6) == '=') {
s += 7;
iseek = tfc_humanfsize(s, &stoi);
if (!str_empty(stoi)) {
iseek = tfc_fnamesize(s, YES);
iseek = tfc_modifysize(iseek, strchr(s, ':'));
if (iseek == NOFSIZE) xerror(NO, YES, YES,
"%s: invalid ixseek value", s);
}
else iseek = tfc_modifysize(iseek, strchr(s, ':'));
}
else if (!strncmp(s, "ictr", 4) && *(s+4) == '=') {
s += 5;
iseek_blocks = tfc_humanfsize(s, &stoi);
if (!str_empty(stoi)) {
iseek_blocks = tfc_fnamesize(s, YES);
if (iseek_blocks == NOFSIZE)
xerror(NO, YES, YES,
"%s: invalid ictr value", s);
iseek_blocks /= TF_BLOCK_SIZE;
iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
}
else iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
}
else if (!strncmp(s, "ixctr", 5) && *(s+5) == '=') {
s += 6;
iseek_blocks = tfc_humanfsize(s, &stoi);
if (!str_empty(stoi)) {
iseek_blocks = tfc_fnamesize(s, YES);
iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
if (iseek_blocks == NOFSIZE)
xerror(NO, YES, YES,
"%s: invalid ixctr value", s);
}
else iseek_blocks = tfc_modifysize(iseek_blocks, strchr(s, ':'));
if (iseek_blocks % TF_BLOCK_SIZE)
xerror(NO, YES, YES,
"%s: not round to TF block size "
"of %u bytes", s, TFC_U(TF_BLOCK_SIZE));
iseek_blocks /= TF_BLOCK_SIZE;
}
else if (!strncmp(s, "oseek", 5) && *(s+5) == '=') {
s += 6;
oseek = tfc_humanfsize(s, &stoi);
if (!str_empty(stoi)) {
oseek = tfc_fnamesize(s, YES);
oseek = tfc_modifysize(oseek, strchr(s, ':'));
if (oseek == NOFSIZE) xerror(NO, YES, YES,
"%s: invalid oseek value", s);
}
else oseek = tfc_modifysize(oseek, strchr(s, ':'));
}
else if (!strncmp(s, "ioseek", 6) && *(s+6) == '=') {
s += 7;
iseek = tfc_humanfsize(s, &stoi);
if (!str_empty(stoi)) {
iseek = tfc_fnamesize(s, YES);
iseek = tfc_modifysize(iseek, strchr(s, ':'));
if (iseek == NOFSIZE) xerror(NO, YES, YES,
"%s: invalid iseek value", s);
}
else iseek = tfc_modifysize(iseek, strchr(s, ':'));
if (do_edcrypt != TFC_DO_PLAIN && iseek % TF_BLOCK_SIZE)
xerror(NO, YES, YES,
"%s: not round to TF block size "
"of %u bytes",
s, TFC_U(TF_BLOCK_SIZE));
iseek_blocks = iseek / TF_BLOCK_SIZE;
oseek = tfc_humanfsize(s, &stoi);
if (!str_empty(stoi)) {
oseek = tfc_fnamesize(s, YES);
oseek = tfc_modifysize(oseek, strchr(s, ':'));
if (oseek == NOFSIZE) xerror(NO, YES, YES,
"%s: invalid oseek value", s);
}
else oseek = tfc_modifysize(oseek, strchr(s, ':'));
}
else if (!strncmp(s, "count", 5) && *(s+5) == '=') {
s += 6;
maxlen = tfc_humanfsize(s, &stoi);
if (!str_empty(stoi)) {
maxlen = tfc_fnamesize(s, YES);
maxlen = tfc_modifysize(maxlen, strchr(s, ':'));
if (maxlen == NOFSIZE) xerror(NO, YES, YES,
"%s: invalid count value", s);
}
else maxlen = tfc_modifysize(maxlen, strchr(s, ':'));
if (counter_opt == TFC_CTR_HEAD)
maxlen += TF_BLOCK_SIZE;
}
else if (!strncmp(s, "ftrunc", 6) && *(s+6) == '=') {
s += 7;
if (!strcmp(s, "tail")) {
do_ftrunc = TFC_FTRUNC_TAIL;
ftrunc_dfd = NOFSIZE;
}
else {
do_ftrunc = TFC_DO_FTRUNC;
ftrunc_dfd = tfc_humanfsize(s, &stoi);
if (!str_empty(stoi)) {
ftrunc_dfd = tfc_fnamesize(s, YES);
ftrunc_dfd = tfc_modifysize(ftrunc_dfd, strchr(s, ':'));
if (ftrunc_dfd == NOFSIZE) xerror(NO, YES, YES,
"%s: invalid ftrunc value", s);
}
else ftrunc_dfd = tfc_modifysize(ftrunc_dfd, strchr(s, ':'));
}
}
else if (!strncmp(s, "xkey", 4) && *(s+4) == '=') {
s += 5;
maxkeylen = tfc_humanfsize(s, &stoi);
if (!str_empty(stoi)) {
maxkeylen = tfc_fnamesize(s, YES);
maxkeylen = tfc_modifysize(maxkeylen, strchr(s, ':'));
if (maxkeylen == NOSIZE)
xerror(NO, YES, YES,
"%s: invalid key length value", s);
}
else maxkeylen = tfc_modifysize(maxkeylen, strchr(s, ':'));
}
else if (!strncmp(s, "okey", 4) && *(s+4) == '=') {
s += 5;
keyoffset = tfc_humanfsize(s, &stoi);
if (!str_empty(stoi)) {
keyoffset = tfc_fnamesize(s, YES);
keyoffset = tfc_modifysize(keyoffset, strchr(s, ':'));
if (keyoffset == NOFSIZE)
xerror(NO, YES, YES,
"%s: invalid key offset value", s);
}
else keyoffset = tfc_modifysize(keyoffset, strchr(s, ':'));
}
else if (!strncmp(s, "xctr", 4) && *(s+4) == '=') {
s += 5;
ctrsz = tfc_humanfsize(s, &stoi);
if (!str_empty(stoi)) {
ctrsz = (size_t)tfc_fnamesize(s, YES);
ctrsz = (size_t)tfc_modifysize((tfc_fsize)ctrsz, strchr(s, ':'));
if (ctrsz == NOSIZE)
xerror(NO, YES, YES,
"%s: invalid counter length value", s);
}
else ctrsz = (size_t)tfc_modifysize((tfc_fsize)ctrsz, strchr(s, ':'));
if (ctrsz > TF_BLOCK_SIZE)
xerror(NO, YES, YES, "%s: counter size cannot exceed TF block size", s);
}
else xerror(NO, YES, YES, "invalid option %s", s);
}
break;
case 'S':
do_mac = TFC_MAC_SIGN;
if (strcasecmp(optarg, "mac") != 0)
do_mac_file = optarg;
break;
case 'M':
do_mac = TFC_MAC_VRFY;
if (!strcasecmp(optarg, "drop"))
do_mac = TFC_MAC_DROP;
else if (strcasecmp(optarg, "mac") != 0)
do_mac_file = optarg;
break;
case 'm':
case 'u':
if (do_mac != TFC_MAC_VRFY)
xerror(NO, YES, YES, "signature source was not specified");
do_mac = TFC_MAC_JUST_VRFY;
if (c == 'u') do_mac = TFC_MAC_JUST_VRFY2;
break;
case 'R':
case 'Z':
if (maxlen != NOFSIZE) {
if (c == 'Z') genzero_nr_bytes = maxlen;
else genrandom_nr_bytes = maxlen;
}
else {
tfc_fsize t;
if (!strcasecmp(optarg, "cbs"))
t = TF_BLOCK_SIZE;
else if (!strcasecmp(optarg, "ks"))
t = TF_FROM_BITS(TFC_KEY_BITS);
else if (!strcasecmp(optarg, "xks"))
t = TF_FROM_BITS(TFC_KEY_BITS) * 2;
else if (!strcasecmp(optarg, "iobs"))
t = blksize;
else {
t = tfc_humanfsize(optarg, &stoi);
if (!str_empty(stoi)) {
t = tfc_fnamesize(optarg, NO);
t = tfc_modifysize(t, strchr(optarg, ':'));
}
else t = tfc_modifysize(t, strchr(optarg, ':'));
}
if (c == 'Z') genzero_nr_bytes = maxlen = t;
else genrandom_nr_bytes = maxlen = t;
}
break;
case 'a':
do_preserve_time = YES;
break;
case 'A':
do_outfmt = TFC_OUTFMT_B64;
break;
case 'W':
do_outfmt = TFC_OUTFMT_RAW;
break;
case 'H':
do_outfmt = TFC_OUTFMT_HEX;
break;
case 'q':
quiet = YES;
verbose = NO;
do_full_hexdump = NO;
status_timer = 0;
break;
case 'v':
verbose = YES;
break;
case 'V':
td = strtod(optarg, &stoi);
status_timer = TFC_DTOUSECS(td);
if (status_timer <= TFC_DTOUSECS(0) || !str_empty(stoi)) status_timer = 0;
break;
default:
usage();
break;
}
}
if (!strcmp(progname, "tfbench")) {
if (!*(argv+optind)) usage();
td = strtod(*(argv+optind), &stoi);
if (td <= TFC_DTOUSECS(0) || !str_empty(stoi))
xerror(NO, YES, YES,
"%s: invalid benchmark time in seconds", *(argv+optind));
bench_timer = TFC_DTOUSECS(td);
do_benchmark(bench_timer, td);
}
if (genrandom_nr_bytes) {
ctr_mode = TFC_MODE_STREAM;
do_edcrypt = TFC_DO_ENCRYPT;
gen_write_bytes(*(argv+optind), oseek, genrandom_nr_bytes);
}
if (genzero_nr_bytes) {
ctr_mode = TFC_MODE_PLAIN;
do_edcrypt = TFC_DO_PLAIN;
gen_write_bytes(*(argv+optind), oseek, genzero_nr_bytes);
}
if (rawkey && password)
xerror(NO, YES, YES, "Cannot use rawkey and hashing password!");
if (do_edcrypt == TFC_DO_ENCRYPT && do_mac >= TFC_MAC_VRFY)
xerror(NO, YES, YES, "Cannot encrypt and verify signature!");
if (do_edcrypt == TFC_DO_DECRYPT && do_mac == TFC_MAC_SIGN)
xerror(NO, YES, YES, "Cannot decrypt and calculate signature!");
if (do_edcrypt == TFC_DO_DECRYPT && counter_opt == TFC_CTR_RAND)
xerror(NO, YES, YES, "Cannot decrypt and embed a generated CTR into file!");
if (do_edcrypt == TFC_DO_ENCRYPT && counter_opt == TFC_CTR_HEAD)
xerror(NO, YES, YES, "Cannot encrypt and read CTR from source!");
if (overwrite_source && counter_opt == TFC_CTR_RAND)
xerror(NO, YES, YES, "Cannot embed a CTR into file when overwriting it!");
if (do_edcrypt == TFC_DO_PLAIN
&& (do_mac || saltf || rawkey || mackey_opt || counter_opt || counter_file))
xerror(NO, YES, YES, "Encryption facility is disabled when in plain IO mode.");
errno = 0;
do_stop = NO;
if (saltf) {
int saltfd;
memset(tfc_salt, 0, TFC_MAX_SALT);
tfc_saltsz = 0;
if (!strcasecmp(saltf, "disable")) goto _nosalt;
if (!strcmp(saltf, "-")) saltfd = 0;
else saltfd = xopen(saltf, O_RDONLY | O_LARGEFILE);
lio = xread(saltfd, tfc_salt, TFC_MAX_SALT - TF_FROM_BITS(TFC_KEY_BITS));
if (lio == NOSIZE) xerror(NO, NO, YES, "%s", saltf);
tfc_saltsz = lio;
xclose(saltfd);
}
_nosalt:
if (mackey_opt == TFC_MACKEY_FILE && mackeyf) {
int mkfd = -1;
tfc_yesno do_stop;
if (!strcmp(mackeyf, "-")) mkfd = 0;
else mkfd = xopen(mackeyf, O_RDONLY | O_LARGEFILE);
skein_init(&sk, TFC_KEY_BITS);
do_stop = NO;
while (1) {
if (do_stop) break;
pblk = tmpdata;
ldone = 0;
lrem = lblock = sizeof(tmpdata);
if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(mkfd);
_mkragain: lio = xread(mkfd, pblk, lrem);
if (lio == 0 && do_stop == NO) do_stop = YES;
if (lio != NOSIZE) ldone += lio;
else {
if (errno != EIO && catch_all_errors != YES)
xerror(NO, NO, NO, "%s", mackeyf);
switch (error_action) {
case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", mackeyf); goto _mkragain; break;
case TFC_ERRACT_SYNC:
case TFC_ERRACT_LSYNC:
xerror(YES, NO, NO, "%s", mackeyf);
lio = ldone = lrem = lblock;
memset(tmpdata, 0, lio);
if (rdpos == NOFSIZE) lseek(mkfd, lio, SEEK_CUR);
else lseek(mkfd, rdpos + lio, SEEK_SET);
break;
default: xerror(NO, NO, NO, "%s", mackeyf); break;
}
}
if (lio && lio < lrem) {
pblk += lio;
lrem -= lio;
goto _mkragain;
}
skein_update(&sk, tmpdata, ldone);
}
skein_final(mackey, &sk);
xclose(mkfd);
}
else if (mackey_opt == TFC_MACKEY_PASSWORD) {
memset(&getps, 0, sizeof(struct getpasswd_state));
getps.fd = getps.efd = -1;
getps.passwd = pwdask;
getps.pwlen = sizeof(pwdask)-1;
getps.echo = mac_pw_prompt ? mac_pw_prompt : "Enter MAC password: ";
getps.charfilter = (show_secrets == YES) ? getps_plain_filter : getps_filter;
getps.maskchar = (show_secrets == YES) ? 0 : 'x';
getps.flags = GETP_WAITFILL;
n = xgetpasswd(&getps);
if (n == NOSIZE) xerror(NO, NO, YES, "getting MAC password");
if (n == ((size_t)-2)) xexit(1);
if (verbose) say_hint(pwdask, n, "MAC password hint");
skein(mackey, TF_MAX_BITS, NULL, pwdask, n);
}
if ((strlen(progname) <= 9)
&& ((!strcmp(progname, "sksum"))
|| ((!memcmp(progname, "sk", 2))
&& (!memcmp(progname+3, "sum", 3)
|| !memcmp(progname+4, "sum", 3)
|| !memcmp(progname+5, "sum", 3)
|| !memcmp(progname+6, "sum", 3)))))
do_sksum(progname, argv+optind);
if (!strcmp(progname, "base64")) do_edbase64(argv+optind);
idx = optind;
if (argv[idx]) {
if ((do_edcrypt == TFC_DO_PLAIN && ctr_mode == TFC_MODE_PLAIN)
|| password
|| rawkey > TFC_RAWKEY_KEYFILE) goto _nokeyfd;
if (!strcmp(argv[idx], "-")) kfd = 0;
else kfd = xopen(argv[idx], O_RDONLY | O_LARGEFILE);
if (do_edcrypt == TFC_DO_PLAIN && ctr_mode == TFC_MODE_XOR) {
/* out: don't erase kfname if xor */
idx++;
goto _nokeyfd;
}
lio = strnlen(argv[idx], PATH_MAX);
memset(argv[idx], '*', lio);
idx++;
}
else password = YES;
errno = 0;
if (do_full_key == NO && tweakf) {
int twfd;
if (!strcmp(tweakf, "-")) twfd = 0;
else twfd = open(tweakf, O_RDONLY | O_LARGEFILE);
if (twfd == -1) xerror(NO, NO, YES, "%s", tweakf);
lio = ldone = xread(twfd, tweak, TF_TWEAK_SIZE);
if (lio == NOSIZE) xerror(NO, NO, YES, "%s", tweakf);
if (ldone < TF_TWEAK_SIZE)
xerror(NO, NO, YES, "%s: %zu bytes tweak required", tweakf, TF_TWEAK_SIZE);
xclose(twfd);
}
_nokeyfd:
errno = 0;
if (argv[idx]) {
if (!strcmp(argv[idx], "-") && kfd) sfd = 0;
else {
sfd = xopen(argv[idx], O_RDONLY | O_LARGEFILE);
if (do_preserve_time) if (fstat(sfd, &s_stat) == -1)
xerror(YES, NO, YES, "stat(%s)", argv[idx]);
}
if ((do_mac >= TFC_MAC_VRFY || do_mac <= TFC_MAC_DROP) && !do_mac_file) {
maxlen = tfc_fdsize(sfd);
if (maxlen == NOFSIZE)
xerror(NO, YES, YES,
"Cannot verify embedded MAC with non-seekable source!");
maxlen -= TF_FROM_BITS(macbits);
}
srcfname = argv[idx];
idx++;
}
if (!do_mac_file && (do_mac >= TFC_MAC_VRFY && sfd == 0))
xerror(NO, YES, YES, "Cannot verify embedded MAC with non-seekable source!");
if (ctrsz == NOSIZE) ctrsz = TF_BLOCK_SIZE;
if (ctrsz > TF_BLOCK_SIZE) ctrsz = TF_BLOCK_SIZE;
if (ctr_mode == TFC_MODE_ECB) goto _ctrskip1;
errno = 0;
if (counter_file) {
int ctrfd;
if (!strcmp(counter_file, "-")) ctrfd = 0;
else ctrfd = xopen(counter_file, O_RDONLY | O_LARGEFILE);
lio = xread(ctrfd, ctr, ctrsz);
if (lio == NOSIZE) xerror(NO, NO, YES, "%s", counter_file);
if (lio < ctrsz) xerror(NO, YES, YES, "counter file is too small (%zu)!", lio);
xclose(ctrfd);
}
else if (counter_opt == TFC_CTR_HEAD) {
pblk = ctr;
ldone = 0;
lrem = lblock = ctrsz;
if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(sfd);
_ctrragain: lio = xread(sfd, pblk, lrem);
if (lio != NOSIZE) ldone += lio;
else {
if (errno != EIO && catch_all_errors != YES)
xerror(NO, NO, NO, "%s", srcfname);
switch (error_action) {
case TFC_ERRACT_CONT: xerror(YES, NO, NO, "%s", srcfname); goto _ctrragain; break;
case TFC_ERRACT_SYNC:
case TFC_ERRACT_LSYNC:
xerror(YES, NO, NO, "%s", srcfname);
lio = ldone = lrem = lblock;
memset(ctr, 0, lio);
if (rdpos == NOFSIZE) lseek(sfd, lio, SEEK_CUR);
else lseek(sfd, rdpos + lio, SEEK_SET);
break;
default: xerror(NO, NO, NO, "%s", srcfname); break;
}
}
if (lio && lio < lrem) {
pblk += lio;
lrem -= lio;
goto _ctrragain;
}
total_processed_src += ldone;
}
_ctrskip1:
if (iseek) {
if (counter_opt == TFC_CTR_HEAD && ctr_mode != TFC_MODE_ECB)
iseek += ctrsz;
if (lseek(sfd, iseek, SEEK_SET) == -1)
xerror(ignore_seek_errors, NO, NO, "%s: seek failed", srcfname);
}
if (do_edcrypt == TFC_DO_PLAIN) goto _plain;
if (verbose) tfc_esay("%s: hashing password", tfc_format_pid(progname));
if (rawkey == TFC_RAWKEY_KEYFILE) {
tfc_yesno xtskeyset = NO;
pblk = key;
_xts2key: ldone = 0;
lrem = lblock = TF_FROM_BITS(TFC_KEY_BITS);
if (error_action == TFC_ERRACT_SYNC) rdpos = tfc_fdgetpos(kfd);
_keyragain: lio = xread(kfd, pblk, lrem);
if (lio != NOSIZE) ldone += lio;
else {
if (errno != EIO && catch_all_errors != YES)
xerror(NO, NO, NO, "reading key");
switch (error_action) {
case TFC_ERRACT_CONT: xerror(YES, NO, NO, "reading key"); goto _keyragain; break;
case TFC_ERRACT_SYNC:
case TFC_ERRACT_LSYNC:
xerror(YES, NO, NO, "reading key");
lio = ldone = lrem = lblock;
memset(key, 0, lio);
if (rdpos == NOFSIZE) lseek(kfd, lio, SEEK_CUR);
else lseek(kfd, rdpos + lio, SEEK_SET);
break;
default: xerror(NO, NO, NO, "reading key"); break;
}
}
if (lio && lio < lrem) {
pblk += lio;
lrem -= lio;
goto _keyragain;
}
if (ldone < lblock) xerror(NO, YES, YES, "rawkey too small! (%zu)", ldone);
if (ctr_mode == TFC_MODE_XTS) {
if (xtskeyset == NO) {
pblk = xtskey;
xtskeyset = YES;
goto _xts2key;
}
}
}
else if (rawkey == TFC_RAWKEY_ASKSTR) {
tfc_yesno xtskeyset = NO;
pblk = key; n = sizeof(key);
_xts2keyaskstr: memset(&getps, 0, sizeof(struct getpasswd_state));
getps.fd = getps.efd = -1;
getps.passwd = (char *)pblk;
getps.pwlen = n;
getps.echo = pw_prompt ? pw_prompt : "Enter rawkey (str): ";
getps.charfilter = (show_secrets == YES) ? getps_plain_filter : getps_filter;
getps.maskchar = (show_secrets == YES) ? 0 : 'x';
getps.flags = GETP_WAITFILL;
n = xgetpasswd(&getps);
if (n == NOSIZE) xerror(NO, NO, YES, "getting string rawkey");
if (n == ((size_t)-2)) xexit(1);
if (verbose) say_hint(pblk, n, "Raw string key hint");
if (ctr_mode == TFC_MODE_XTS) {
if (xtskeyset == NO) {
pblk = xtskey; n = sizeof(xtskey);
xtskeyset = YES;
goto _xts2keyaskstr;
}
}
}
else if (rawkey == TFC_RAWKEY_ASKHEX) {
tfc_yesno xtskeyset = NO;
pblk = key;
_rawkey_hex_again:
memset(&getps, 0, sizeof(struct getpasswd_state));
getps.fd = getps.efd = -1;
getps.passwd = pwdask;
getps.pwlen = (TF_FROM_BITS(TFC_KEY_BITS)*2);
getps.echo = pw_prompt ? pw_prompt : "Enter rawkey (hex): ";
getps.charfilter = (show_secrets == YES) ? getps_plain_hex_filter : getps_hex_filter;
getps.maskchar = (show_secrets == YES) ? 0 : 'x';
getps.flags = GETP_WAITFILL;
n = xgetpasswd(&getps);
if (n == NOSIZE) xerror(NO, NO, YES, "getting hex rawkey");
if (n == ((size_t)-2)) xexit(1);
if (n % 2) {
tfc_esay("Please input even number of hex digits!");
goto _rawkey_hex_again;
}
hex2bin(pblk, pwdask);
memset(pwdask, 0, sizeof(pwdask));
if (verbose) say_hint(pblk, n/2, "Raw hex key hint");
if (ctr_mode == TFC_MODE_XTS) {