2 * tfcrypt -- high security Threefish encryption tool.
4 * tfcrypt is copyrighted:
5 * Copyright (C) 2012-2018 Andrey Rys. All rights reserved.
7 * tfcrypt is licensed to you under the terms of std. MIT/X11 license:
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:
17 * The above copyright notice and this permission notice shall be
18 * included in all copies or substantial portions of the Software.
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.
36 #define _XOPEN_SOURCE 700
38 #ifndef _LARGEFILE64_SOURCE
39 #define _LARGEFILE64_SOURCE
42 #ifndef _TFCRYPT_VERSION
43 #error Version number may help you to identify missing functionality.
53 #include <sys/types.h>
61 typedef void (*sighandler_t)(int);
64 #include "getpasswd.h"
70 typedef short tfc_yesno;
71 typedef TF_BYTE_TYPE tfc_byte;
72 typedef unsigned long long tfc_fsize;
73 typedef unsigned long long tfc_useconds;
76 #define TFC_NR_TURNS 262144
80 #define TFC_CTR_MODE TFC_MODE_XTS
84 #define TFC_BLKSIZE 65536
88 #define TFC_XTSBLOCKS 32
92 #define TFC_B64_WIDTH 76
94 #define TFC_B64_EWIDTH (TFC_B64_WIDTH - (TFC_B64_WIDTH / 4))
95 #define TFC_B64_DWIDTH TFC_BLKSIZE
97 #define NOSIZE ((size_t)-1)
98 #define NOFSIZE ((tfc_fsize)-1)
99 #define TFC_ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
101 #define TFC_KEY_BITS (do_tfcrypt1 == YES ? TF_MAX_BITS : TF_NR_KEY_BITS)
103 #define TFC_ASCII_TFC_MAC_FOURCC "%TF"
104 #define TFC_ASCII_TFC_MAC_FOURCC_LEN (sizeof(TFC_ASCII_TFC_MAC_FOURCC)-1)
106 #define TFC_U(x) ((unsigned)x)
107 #define TFC_DTOUSECS(x) ((x) * 1000000.0)
108 #define TFC_UTODSECS(x) ((x) / 1000000.0)
110 #define TFC_DEFAULT_RANDSOURCE "/dev/urandom"
111 #define TFC_STDIN_NAME "(stdin)"
112 #define TFC_STDOUT_NAME "(stdout)"
114 #define TFC_TMPSIZE (TF_BLOCK_SIZE * 4)
116 int xmhexdump(int to, const void *data, size_t szdata, int hgroup, int hexstr, int newline);
117 #define mhexdump(data, szdata, group, newline) xmhexdump(1, data, szdata, group, do_full_hexdump, newline)
118 #define mehexdump(data, szdata, group, newline) xmhexdump(2, data, szdata, group, do_full_hexdump, newline)
120 extern char *progname;
122 extern size_t nr_turns;
124 extern size_t macbits;
125 extern tfc_byte key[TF_KEY_SIZE], ctr[TF_BLOCK_SIZE], xtskey[TF_KEY_SIZE], mackey[TF_FROM_BITS(TF_MAX_BITS)];
126 extern struct skein sk;
127 extern struct tfe_stream tfe;
128 extern tfc_byte srcblk[TFC_BLKSIZE], dstblk[TFC_BLKSIZE], *pblk;
129 extern tfc_byte macvrfy[SKEIN_DIGEST_SIZE], macresult[SKEIN_DIGEST_SIZE];
130 extern tfc_byte tmpdata[TFC_TMPSIZE];
131 extern char *randsource;
132 extern tfc_fsize iseek_blocks, iseek, oseek, maxlen;
133 extern tfc_fsize total_processed_src, total_processed_dst;
134 extern tfc_fsize delta_processed;
135 extern tfc_fsize genrandom_nr_bytes, genzero_nr_bytes;
136 extern int sfd, kfd, dfd;
137 extern struct stat s_stat;
138 extern size_t blksize, xtsblocks;
139 extern char pwdask[512], pwdagain[512];
140 extern size_t lio, lrem, ldone, lblock;
141 extern size_t maxkeylen, ctrsz;
142 extern struct sigaction sigact;
143 extern size_t sksum_turns;
144 extern int do_edcrypt, do_stop, quiet, error_action;
145 extern int counter_opt, mackey_opt, do_mac, do_outfmt, rawkey;
146 extern int idx, write_flags;
147 extern tfc_yesno catch_all_errors, password, overwrite_source, do_fsync, do_pad, do_tfcrypt1;
148 extern tfc_yesno do_preserve_time, do_stats_in_gibs, do_statline_dynamic, do_less_stats;
149 extern tfc_yesno no_repeat, do_full_hexdump, verbose, statline_was_shown;
150 extern char *srcfname, *dstfname, *do_mac_file, *counter_file, *sksum_hashlist_file;
151 extern char *genkeyf, *mackeyf, *tweakf;
152 extern char *pw_prompt, *mac_pw_prompt;
153 extern tfc_useconds status_timer, bench_timer;
154 extern tfc_useconds current_time, delta_time;
155 extern struct getpasswd_state getps;
157 void xerror(tfc_yesno noexit, tfc_yesno noerrno, tfc_yesno nostats, const char *fmt, ...);
158 void xexit(int status);
161 void tfc_vfsay(FILE *where, tfc_yesno addnl, const char *fmt, va_list ap);
162 void tfc_nfsay(FILE *where, const char *fmt, ...);
163 void tfc_esay(const char *fmt, ...);
164 void tfc_say(const char *fmt, ...);
166 void tfc_printbase64(FILE *where, const void *p, size_t n, tfc_yesno nl);
167 void tfc_data_to_words64(void *data, size_t szdata);
168 tfc_fsize tfc_humanfsize(const char *s, char **stoi);
169 const char *tfc_getscale(int scale);
170 void tfc_describescale(tfc_fsize num, double *w, int *scale);
171 size_t blk_len_adj(tfc_fsize filelen, tfc_fsize read_already, size_t blklen);
172 tfc_yesno xor_shrink(void *dst, size_t szdst, const void *src, size_t szsrc);
173 tfc_yesno str_empty(const char *str);
175 const char *tfc_modename(int mode);
176 void tfc_getcurtime(tfc_useconds *tx);
177 tfc_fsize tfc_fdsize(int fd);
178 tfc_fsize tfc_fnamesize(char *fname, tfc_yesno noexit);
179 tfc_fsize tfc_modifysize(tfc_fsize szmodify, const char *szspec);
180 void fcopy_matime(int fd, const struct stat *st);
181 tfc_yesno xfgets(char *s, size_t n, FILE *f);
182 tfc_yesno isbase64(const char *s);
183 void hex2bin(void *d, const char *s);
184 void tfc_finirandom(void);
185 void tfc_getrandom(void *buf, size_t sz);
186 void exit_sigterm(int signal);
187 void print_crypt_status(int signal);
188 void change_status_width(int signal);
189 void change_status_timer(int signal);
190 void setup_next_alarm(tfc_useconds useconds);
191 void skein(void *hash, size_t bits, const void *key, const void *data, size_t szdata);
192 void tf_key_tweak_compat(void *key);
193 tfc_yesno skeinfd(void *hash, size_t bits, const void *key, int fd, tfc_fsize readto);
195 void gen_write_bytes(const char *foutname, tfc_fsize offset, tfc_fsize nrbytes);
196 void do_edbase64(char **fargv);
197 void do_sksum(char *spec, char **fargv);
198 void do_benchmark(tfc_useconds useconds, double dseconds);
202 enum { TFC_ERRACT_EXIT, TFC_ERRACT_CONT, TFC_ERRACT_SYNC };
203 enum { TFC_STOP_BEGAN = 1, TFC_STOP_FULL };
204 enum { TFC_DO_PLAIN, TFC_DO_ENCRYPT, TFC_DO_DECRYPT };
205 enum { TFC_MAC_DROP = -1, TFC_MAC_SIGN = 1, TFC_MAC_VRFY, TFC_MAC_JUST_VRFY };
206 enum { TFC_MACKEY_RAWKEY = 1, TFC_MACKEY_PASSWORD, TFC_MACKEY_FILE };
207 enum { TFC_RAWKEY_KEYFILE = 1, TFC_RAWKEY_ASKSTR, TFC_RAWKEY_ASKHEX };
208 enum { TFC_OUTFMT_HEX = 1, TFC_OUTFMT_B64, TFC_OUTFMT_RAW };
210 TFC_MODE_SKSUM = -2, TFC_MODE_PLAIN = -1, TFC_MODE_CTR = 1,
211 TFC_MODE_STREAM, TFC_MODE_XTS, TFC_MODE_ECB, TFC_MODE_CBC, TFC_MODE_OCB
213 enum { TFC_CTR_SHOW = 1, TFC_CTR_HEAD, TFC_CTR_RAND };