155714Skris/* crypto/des/des.c */ 255714Skris/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 355714Skris * All rights reserved. 455714Skris * 555714Skris * This package is an SSL implementation written 655714Skris * by Eric Young (eay@cryptsoft.com). 755714Skris * The implementation was written so as to conform with Netscapes SSL. 8280304Sjkim * 955714Skris * This library is free for commercial and non-commercial use as long as 1055714Skris * the following conditions are aheared to. The following conditions 1155714Skris * apply to all code found in this distribution, be it the RC4, RSA, 1255714Skris * lhash, DES, etc., code; not just the SSL code. The SSL documentation 1355714Skris * included with this distribution is covered by the same copyright terms 1455714Skris * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15280304Sjkim * 1655714Skris * Copyright remains Eric Young's, and as such any Copyright notices in 1755714Skris * the code are not to be removed. 1855714Skris * If this package is used in a product, Eric Young should be given attribution 1955714Skris * as the author of the parts of the library used. 2055714Skris * This can be in the form of a textual message at program startup or 2155714Skris * in documentation (online or textual) provided with the package. 22280304Sjkim * 2355714Skris * Redistribution and use in source and binary forms, with or without 2455714Skris * modification, are permitted provided that the following conditions 2555714Skris * are met: 2655714Skris * 1. Redistributions of source code must retain the copyright 2755714Skris * notice, this list of conditions and the following disclaimer. 2855714Skris * 2. Redistributions in binary form must reproduce the above copyright 2955714Skris * notice, this list of conditions and the following disclaimer in the 3055714Skris * documentation and/or other materials provided with the distribution. 3155714Skris * 3. All advertising materials mentioning features or use of this software 3255714Skris * must display the following acknowledgement: 3355714Skris * "This product includes cryptographic software written by 3455714Skris * Eric Young (eay@cryptsoft.com)" 3555714Skris * The word 'cryptographic' can be left out if the rouines from the library 3655714Skris * being used are not cryptographic related :-). 37280304Sjkim * 4. If you include any Windows specific code (or a derivative thereof) from 3855714Skris * the apps directory (application code) you must include an acknowledgement: 3955714Skris * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40280304Sjkim * 4155714Skris * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 4255714Skris * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4355714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 4455714Skris * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 4555714Skris * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 4655714Skris * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 4755714Skris * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4855714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 4955714Skris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 5055714Skris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5155714Skris * SUCH DAMAGE. 52280304Sjkim * 5355714Skris * The licence and distribution terms for any publically available version or 5455714Skris * derivative of this code cannot be changed. i.e. this code cannot simply be 5555714Skris * copied and put under another distribution licence 5655714Skris * [including the GNU Public Licence.] 5755714Skris */ 5855714Skris 5955714Skris#include <stdio.h> 6055714Skris#include <stdlib.h> 6159191Skris#include <string.h> 6255714Skris#include <openssl/opensslconf.h> 63109998Smarkm#ifndef OPENSSL_SYS_MSDOS 64280304Sjkim# ifndef OPENSSL_SYS_VMS 65280304Sjkim# include OPENSSL_UNISTD 66280304Sjkim# else /* OPENSSL_SYS_VMS */ 67280304Sjkim# ifdef __DECC 68280304Sjkim# include <unistd.h> 69280304Sjkim# else /* not __DECC */ 70280304Sjkim# include <math.h> 71280304Sjkim# endif /* __DECC */ 72280304Sjkim# endif /* OPENSSL_SYS_VMS */ 73280304Sjkim#else /* OPENSSL_SYS_MSDOS */ 74280304Sjkim# include <io.h> 7555714Skris#endif 7655714Skris 7755714Skris#include <time.h> 7855714Skris#include "des_ver.h" 7955714Skris 80109998Smarkm#ifdef OPENSSL_SYS_VMS 81280304Sjkim# include <types.h> 82280304Sjkim# include <stat.h> 8355714Skris#else 84280304Sjkim# ifndef _IRIX 85280304Sjkim# include <sys/types.h> 86280304Sjkim# endif 87280304Sjkim# include <sys/stat.h> 8855714Skris#endif 8955714Skris#include <openssl/des.h> 9055714Skris#include <openssl/rand.h> 91109998Smarkm#include <openssl/ui_compat.h> 9255714Skris 9355714Skrisvoid usage(void); 9455714Skrisvoid doencryption(void); 9555714Skrisint uufwrite(unsigned char *data, int size, unsigned int num, FILE *fp); 9655714Skrisvoid uufwriteEnd(FILE *fp); 97280304Sjkimint uufread(unsigned char *out, int size, unsigned int num, FILE *fp); 98280304Sjkimint uuencode(unsigned char *in, int num, unsigned char *out); 99280304Sjkimint uudecode(unsigned char *in, int num, unsigned char *out); 100280304Sjkimvoid DES_3cbc_encrypt(DES_cblock *input, DES_cblock *output, long length, 101280304Sjkim DES_key_schedule sk1, DES_key_schedule sk2, 102280304Sjkim DES_cblock *ivec1, DES_cblock *ivec2, int enc); 103109998Smarkm#ifdef OPENSSL_SYS_VMS 104280304Sjkim# define EXIT(a) exit(a&0x10000000L) 10555714Skris#else 106280304Sjkim# define EXIT(a) exit(a) 10755714Skris#endif 10855714Skris 10955714Skris#define BUFSIZE (8*1024) 11055714Skris#define VERIFY 1 111280304Sjkim#define KEYSIZ 8 112280304Sjkim#define KEYSIZB 1024 /* should hit tty line limit first :-) */ 113280304Sjkimchar key[KEYSIZB + 1]; 114280304Sjkimint do_encrypt, longk = 0; 115280304SjkimFILE *DES_IN, *DES_OUT, *CKSUM_OUT; 11655714Skrischar uuname[200]; 11755714Skrisunsigned char uubuf[50]; 118280304Sjkimint uubufnum = 0; 119280304Sjkim#define INUUBUFN (45*100) 120280304Sjkim#define OUTUUBUF (65*100) 12155714Skrisunsigned char b[OUTUUBUF]; 12255714Skrisunsigned char bb[300]; 123280304SjkimDES_cblock cksum = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; 12455714Skris 125280304Sjkimchar cksumname[200] = ""; 12655714Skris 127280304Sjkimint vflag, cflag, eflag, dflag, kflag, bflag, fflag, sflag, uflag, flag3, 128280304Sjkim hflag, error; 129280304Sjkim 13055714Skrisint main(int argc, char **argv) 131280304Sjkim{ 132280304Sjkim int i; 133280304Sjkim struct stat ins, outs; 134280304Sjkim char *p; 135280304Sjkim char *in = NULL, *out = NULL; 13655714Skris 137280304Sjkim vflag = cflag = eflag = dflag = kflag = hflag = bflag = fflag = sflag = 138280304Sjkim uflag = flag3 = 0; 139280304Sjkim error = 0; 140280304Sjkim memset(key, 0, sizeof(key)); 14155714Skris 142280304Sjkim for (i = 1; i < argc; i++) { 143280304Sjkim p = argv[i]; 144280304Sjkim if ((p[0] == '-') && (p[1] != '\0')) { 145280304Sjkim p++; 146280304Sjkim while (*p) { 147280304Sjkim switch (*(p++)) { 148280304Sjkim case '3': 149280304Sjkim flag3 = 1; 150280304Sjkim longk = 1; 151280304Sjkim break; 152280304Sjkim case 'c': 153280304Sjkim cflag = 1; 154280304Sjkim strncpy(cksumname, p, 200); 155280304Sjkim cksumname[sizeof(cksumname) - 1] = '\0'; 156280304Sjkim p += strlen(cksumname); 157280304Sjkim break; 158280304Sjkim case 'C': 159280304Sjkim cflag = 1; 160280304Sjkim longk = 1; 161280304Sjkim strncpy(cksumname, p, 200); 162280304Sjkim cksumname[sizeof(cksumname) - 1] = '\0'; 163280304Sjkim p += strlen(cksumname); 164280304Sjkim break; 165280304Sjkim case 'e': 166280304Sjkim eflag = 1; 167280304Sjkim break; 168280304Sjkim case 'v': 169280304Sjkim vflag = 1; 170280304Sjkim break; 171280304Sjkim case 'E': 172280304Sjkim eflag = 1; 173280304Sjkim longk = 1; 174280304Sjkim break; 175280304Sjkim case 'd': 176280304Sjkim dflag = 1; 177280304Sjkim break; 178280304Sjkim case 'D': 179280304Sjkim dflag = 1; 180280304Sjkim longk = 1; 181280304Sjkim break; 182280304Sjkim case 'b': 183280304Sjkim bflag = 1; 184280304Sjkim break; 185280304Sjkim case 'f': 186280304Sjkim fflag = 1; 187280304Sjkim break; 188280304Sjkim case 's': 189280304Sjkim sflag = 1; 190280304Sjkim break; 191280304Sjkim case 'u': 192280304Sjkim uflag = 1; 193280304Sjkim strncpy(uuname, p, 200); 194280304Sjkim uuname[sizeof(uuname) - 1] = '\0'; 195280304Sjkim p += strlen(uuname); 196280304Sjkim break; 197280304Sjkim case 'h': 198280304Sjkim hflag = 1; 199280304Sjkim break; 200280304Sjkim case 'k': 201280304Sjkim kflag = 1; 202280304Sjkim if ((i + 1) == argc) { 203280304Sjkim fputs("must have a key with the -k option\n", stderr); 204280304Sjkim error = 1; 205280304Sjkim } else { 206280304Sjkim int j; 20755714Skris 208280304Sjkim i++; 209280304Sjkim strncpy(key, argv[i], KEYSIZB); 210280304Sjkim for (j = strlen(argv[i]) - 1; j >= 0; j--) 211280304Sjkim argv[i][j] = '\0'; 212280304Sjkim } 213280304Sjkim break; 214280304Sjkim default: 215280304Sjkim fprintf(stderr, "'%c' unknown flag\n", p[-1]); 216280304Sjkim error = 1; 217280304Sjkim break; 218280304Sjkim } 219280304Sjkim } 220280304Sjkim } else { 221280304Sjkim if (in == NULL) 222280304Sjkim in = argv[i]; 223280304Sjkim else if (out == NULL) 224280304Sjkim out = argv[i]; 225280304Sjkim else 226280304Sjkim error = 1; 227280304Sjkim } 228280304Sjkim } 229280304Sjkim if (error) 230280304Sjkim usage(); 231280304Sjkim /*- 232280304Sjkim * We either 233280304Sjkim * do checksum or 234280304Sjkim * do encrypt or 235280304Sjkim * do decrypt or 236280304Sjkim * do decrypt then ckecksum or 237280304Sjkim * do checksum then encrypt 238280304Sjkim */ 239280304Sjkim if (((eflag + dflag) == 1) || cflag) { 240280304Sjkim if (eflag) 241280304Sjkim do_encrypt = DES_ENCRYPT; 242280304Sjkim if (dflag) 243280304Sjkim do_encrypt = DES_DECRYPT; 244280304Sjkim } else { 245280304Sjkim if (vflag) { 246280304Sjkim#ifndef _Windows 247280304Sjkim fprintf(stderr, "des(1) built with %s\n", libdes_version); 248280304Sjkim#endif 249280304Sjkim EXIT(1); 250280304Sjkim } else 251280304Sjkim usage(); 252280304Sjkim } 25355714Skris 254280304Sjkim#ifndef _Windows 255280304Sjkim if (vflag) 256280304Sjkim fprintf(stderr, "des(1) built with %s\n", libdes_version); 257280304Sjkim#endif 258280304Sjkim if ((in != NULL) && (out != NULL) && 259109998Smarkm#ifndef OPENSSL_SYS_MSDOS 260280304Sjkim (stat(in, &ins) != -1) && 261280304Sjkim (stat(out, &outs) != -1) && 262280304Sjkim (ins.st_dev == outs.st_dev) && (ins.st_ino == outs.st_ino)) 263280304Sjkim#else /* OPENSSL_SYS_MSDOS */ 264280304Sjkim (strcmp(in, out) == 0)) 26555714Skris#endif 266280304Sjkim { 267280304Sjkim fputs("input and output file are the same\n", stderr); 268280304Sjkim EXIT(3); 269280304Sjkim } 27055714Skris 271280304Sjkim if (!kflag) 272280304Sjkim if (des_read_pw_string 273280304Sjkim (key, KEYSIZB + 1, "Enter key:", eflag ? VERIFY : 0)) { 274280304Sjkim fputs("password error\n", stderr); 275280304Sjkim EXIT(2); 276280304Sjkim } 27755714Skris 278280304Sjkim if (in == NULL) 279280304Sjkim DES_IN = stdin; 280280304Sjkim else if ((DES_IN = fopen(in, "r")) == NULL) { 281280304Sjkim perror("opening input file"); 282280304Sjkim EXIT(4); 283280304Sjkim } 28455714Skris 285280304Sjkim CKSUM_OUT = stdout; 286280304Sjkim if (out == NULL) { 287280304Sjkim DES_OUT = stdout; 288280304Sjkim CKSUM_OUT = stderr; 289280304Sjkim } else if ((DES_OUT = fopen(out, "w")) == NULL) { 290280304Sjkim perror("opening output file"); 291280304Sjkim EXIT(5); 292280304Sjkim } 293109998Smarkm#ifdef OPENSSL_SYS_MSDOS 294280304Sjkim /* This should set the file to binary mode. */ 295280304Sjkim { 296280304Sjkim# include <fcntl.h> 297280304Sjkim if (!(uflag && dflag)) 298280304Sjkim setmode(fileno(DES_IN), O_BINARY); 299280304Sjkim if (!(uflag && eflag)) 300280304Sjkim setmode(fileno(DES_OUT), O_BINARY); 301280304Sjkim } 30255714Skris#endif 30355714Skris 304280304Sjkim doencryption(); 305280304Sjkim fclose(DES_IN); 306280304Sjkim fclose(DES_OUT); 307280304Sjkim EXIT(0); 308280304Sjkim} 30955714Skris 31055714Skrisvoid usage(void) 311280304Sjkim{ 312280304Sjkim char **u; 313280304Sjkim static const char *Usage[] = { 314280304Sjkim "des <options> [input-file [output-file]]", 315280304Sjkim "options:", 316280304Sjkim "-v : des(1) version number", 317280304Sjkim "-e : encrypt using SunOS compatible user key to DES key conversion.", 318280304Sjkim "-E : encrypt ", 319280304Sjkim "-d : decrypt using SunOS compatible user key to DES key conversion.", 320280304Sjkim "-D : decrypt ", 321280304Sjkim "-c[ckname] : generate a cbc_cksum using SunOS compatible user key to", 322280304Sjkim " DES key conversion and output to ckname (stdout default,", 323280304Sjkim " stderr if data being output on stdout). The checksum is", 324280304Sjkim " generated before encryption and after decryption if used", 325280304Sjkim " in conjunction with -[eEdD].", 326280304Sjkim "-C[ckname] : generate a cbc_cksum as for -c but compatible with -[ED].", 327280304Sjkim "-k key : use key 'key'", 328280304Sjkim "-h : the key that is entered will be a hexadecimal number", 329280304Sjkim " that is used directly as the des key", 330280304Sjkim "-u[uuname] : input file is uudecoded if -[dD] or output uuencoded data if -[eE]", 331280304Sjkim " (uuname is the filename to put in the uuencode header).", 332280304Sjkim "-b : encrypt using DES in ecb encryption mode, the default is cbc mode.", 333280304Sjkim "-3 : encrypt using triple DES encryption. This uses 2 keys", 334280304Sjkim " generated from the input key. If the input key is less", 335280304Sjkim " than 8 characters long, this is equivalent to normal", 336280304Sjkim " encryption. Default is triple cbc, -b makes it triple ecb.", 337280304Sjkim NULL 338280304Sjkim }; 339280304Sjkim for (u = (char **)Usage; *u; u++) { 340280304Sjkim fputs(*u, stderr); 341280304Sjkim fputc('\n', stderr); 342280304Sjkim } 34355714Skris 344280304Sjkim EXIT(1); 345280304Sjkim} 34655714Skris 34755714Skrisvoid doencryption(void) 348280304Sjkim{ 34955714Skris#ifdef _LIBC 350280304Sjkim extern unsigned long time(); 35155714Skris#endif 35255714Skris 353280304Sjkim register int i; 354280304Sjkim DES_key_schedule ks, ks2; 355280304Sjkim DES_cblock iv, iv2; 356280304Sjkim char *p; 357280304Sjkim int num = 0, j, k, l, rem, ll, len, last, ex = 0; 358280304Sjkim DES_cblock kk, k2; 359280304Sjkim FILE *O; 360280304Sjkim int Exit = 0; 361109998Smarkm#ifndef OPENSSL_SYS_MSDOS 362280304Sjkim static unsigned char buf[BUFSIZE + 8], obuf[BUFSIZE + 8]; 36355714Skris#else 364280304Sjkim static unsigned char *buf = NULL, *obuf = NULL; 36555714Skris 366280304Sjkim if (buf == NULL) { 367280304Sjkim if (((buf = OPENSSL_malloc(BUFSIZE + 8)) == NULL) || 368280304Sjkim ((obuf = OPENSSL_malloc(BUFSIZE + 8)) == NULL)) { 369280304Sjkim fputs("Not enough memory\n", stderr); 370280304Sjkim Exit = 10; 371280304Sjkim goto problems; 372280304Sjkim } 373280304Sjkim } 37455714Skris#endif 37555714Skris 376280304Sjkim if (hflag) { 377280304Sjkim j = (flag3 ? 16 : 8); 378280304Sjkim p = key; 379280304Sjkim for (i = 0; i < j; i++) { 380280304Sjkim k = 0; 381280304Sjkim if ((*p <= '9') && (*p >= '0')) 382280304Sjkim k = (*p - '0') << 4; 383280304Sjkim else if ((*p <= 'f') && (*p >= 'a')) 384280304Sjkim k = (*p - 'a' + 10) << 4; 385280304Sjkim else if ((*p <= 'F') && (*p >= 'A')) 386280304Sjkim k = (*p - 'A' + 10) << 4; 387280304Sjkim else { 388280304Sjkim fputs("Bad hex key\n", stderr); 389280304Sjkim Exit = 9; 390280304Sjkim goto problems; 391280304Sjkim } 392280304Sjkim p++; 393280304Sjkim if ((*p <= '9') && (*p >= '0')) 394280304Sjkim k |= (*p - '0'); 395280304Sjkim else if ((*p <= 'f') && (*p >= 'a')) 396280304Sjkim k |= (*p - 'a' + 10); 397280304Sjkim else if ((*p <= 'F') && (*p >= 'A')) 398280304Sjkim k |= (*p - 'A' + 10); 399280304Sjkim else { 400280304Sjkim fputs("Bad hex key\n", stderr); 401280304Sjkim Exit = 9; 402280304Sjkim goto problems; 403280304Sjkim } 404280304Sjkim p++; 405280304Sjkim if (i < 8) 406280304Sjkim kk[i] = k; 407280304Sjkim else 408280304Sjkim k2[i - 8] = k; 409280304Sjkim } 410280304Sjkim DES_set_key_unchecked(&k2, &ks2); 411280304Sjkim OPENSSL_cleanse(k2, sizeof(k2)); 412280304Sjkim } else if (longk || flag3) { 413280304Sjkim if (flag3) { 414280304Sjkim DES_string_to_2keys(key, &kk, &k2); 415280304Sjkim DES_set_key_unchecked(&k2, &ks2); 416280304Sjkim OPENSSL_cleanse(k2, sizeof(k2)); 417280304Sjkim } else 418280304Sjkim DES_string_to_key(key, &kk); 419280304Sjkim } else 420280304Sjkim for (i = 0; i < KEYSIZ; i++) { 421280304Sjkim l = 0; 422280304Sjkim k = key[i]; 423280304Sjkim for (j = 0; j < 8; j++) { 424280304Sjkim if (k & 1) 425280304Sjkim l++; 426280304Sjkim k >>= 1; 427280304Sjkim } 428280304Sjkim if (l & 1) 429280304Sjkim kk[i] = key[i] & 0x7f; 430280304Sjkim else 431280304Sjkim kk[i] = key[i] | 0x80; 432280304Sjkim } 43355714Skris 434280304Sjkim DES_set_key_unchecked(&kk, &ks); 435280304Sjkim OPENSSL_cleanse(key, sizeof(key)); 436280304Sjkim OPENSSL_cleanse(kk, sizeof(kk)); 437280304Sjkim /* woops - A bug that does not showup under unix :-( */ 438280304Sjkim memset(iv, 0, sizeof(iv)); 439280304Sjkim memset(iv2, 0, sizeof(iv2)); 44055714Skris 441280304Sjkim l = 1; 442280304Sjkim rem = 0; 443280304Sjkim /* first read */ 444280304Sjkim if (eflag || (!dflag && cflag)) { 445280304Sjkim for (;;) { 446280304Sjkim num = l = fread(&(buf[rem]), 1, BUFSIZE, DES_IN); 447280304Sjkim l += rem; 448280304Sjkim num += rem; 449280304Sjkim if (l < 0) { 450280304Sjkim perror("read error"); 451280304Sjkim Exit = 6; 452280304Sjkim goto problems; 453280304Sjkim } 45455714Skris 455280304Sjkim rem = l % 8; 456280304Sjkim len = l - rem; 457280304Sjkim if (feof(DES_IN)) { 458284285Sjkim for (i = 7 - rem; i > 0; i--) { 459284285Sjkim if (RAND_pseudo_bytes(buf + l++, 1) < 0) 460284285Sjkim goto problems; 461284285Sjkim } 462280304Sjkim buf[l++] = rem; 463280304Sjkim ex = 1; 464280304Sjkim len += rem; 465280304Sjkim } else 466280304Sjkim l -= rem; 46755714Skris 468280304Sjkim if (cflag) { 469280304Sjkim DES_cbc_cksum(buf, &cksum, (long)len, &ks, &cksum); 470280304Sjkim if (!eflag) { 471280304Sjkim if (feof(DES_IN)) 472280304Sjkim break; 473280304Sjkim else 474280304Sjkim continue; 475280304Sjkim } 476280304Sjkim } 47755714Skris 478280304Sjkim if (bflag && !flag3) 479280304Sjkim for (i = 0; i < l; i += 8) 480280304Sjkim DES_ecb_encrypt((DES_cblock *)&(buf[i]), 481280304Sjkim (DES_cblock *)&(obuf[i]), 482280304Sjkim &ks, do_encrypt); 483280304Sjkim else if (flag3 && bflag) 484280304Sjkim for (i = 0; i < l; i += 8) 485280304Sjkim DES_ecb2_encrypt((DES_cblock *)&(buf[i]), 486280304Sjkim (DES_cblock *)&(obuf[i]), 487280304Sjkim &ks, &ks2, do_encrypt); 488280304Sjkim else if (flag3 && !bflag) { 489280304Sjkim char tmpbuf[8]; 49055714Skris 491280304Sjkim if (rem) 492280304Sjkim memcpy(tmpbuf, &(buf[l]), (unsigned int)rem); 493280304Sjkim DES_3cbc_encrypt((DES_cblock *)buf, (DES_cblock *)obuf, 494280304Sjkim (long)l, ks, ks2, &iv, &iv2, do_encrypt); 495280304Sjkim if (rem) 496280304Sjkim memcpy(&(buf[l]), tmpbuf, (unsigned int)rem); 497280304Sjkim } else { 498280304Sjkim DES_cbc_encrypt(buf, obuf, (long)l, &ks, &iv, do_encrypt); 499280304Sjkim if (l >= 8) 500280304Sjkim memcpy(iv, &(obuf[l - 8]), 8); 501280304Sjkim } 502280304Sjkim if (rem) 503280304Sjkim memcpy(buf, &(buf[l]), (unsigned int)rem); 50455714Skris 505280304Sjkim i = 0; 506280304Sjkim while (i < l) { 507280304Sjkim if (uflag) 508280304Sjkim j = uufwrite(obuf, 1, (unsigned int)l - i, DES_OUT); 509280304Sjkim else 510280304Sjkim j = fwrite(obuf, 1, (unsigned int)l - i, DES_OUT); 511280304Sjkim if (j == -1) { 512280304Sjkim perror("Write error"); 513280304Sjkim Exit = 7; 514280304Sjkim goto problems; 515280304Sjkim } 516280304Sjkim i += j; 517280304Sjkim } 518280304Sjkim if (feof(DES_IN)) { 519280304Sjkim if (uflag) 520280304Sjkim uufwriteEnd(DES_OUT); 521280304Sjkim break; 522280304Sjkim } 523280304Sjkim } 524280304Sjkim } else { /* decrypt */ 52555714Skris 526280304Sjkim ex = 1; 527280304Sjkim for (;;) { 528280304Sjkim if (ex) { 529280304Sjkim if (uflag) 530280304Sjkim l = uufread(buf, 1, BUFSIZE, DES_IN); 531280304Sjkim else 532280304Sjkim l = fread(buf, 1, BUFSIZE, DES_IN); 533280304Sjkim ex = 0; 534280304Sjkim rem = l % 8; 535280304Sjkim l -= rem; 536280304Sjkim } 537280304Sjkim if (l < 0) { 538280304Sjkim perror("read error"); 539280304Sjkim Exit = 6; 540280304Sjkim goto problems; 541280304Sjkim } 54255714Skris 543280304Sjkim if (bflag && !flag3) 544280304Sjkim for (i = 0; i < l; i += 8) 545280304Sjkim DES_ecb_encrypt((DES_cblock *)&(buf[i]), 546280304Sjkim (DES_cblock *)&(obuf[i]), 547280304Sjkim &ks, do_encrypt); 548280304Sjkim else if (flag3 && bflag) 549280304Sjkim for (i = 0; i < l; i += 8) 550280304Sjkim DES_ecb2_encrypt((DES_cblock *)&(buf[i]), 551280304Sjkim (DES_cblock *)&(obuf[i]), 552280304Sjkim &ks, &ks2, do_encrypt); 553280304Sjkim else if (flag3 && !bflag) { 554280304Sjkim DES_3cbc_encrypt((DES_cblock *)buf, (DES_cblock *)obuf, 555280304Sjkim (long)l, ks, ks2, &iv, &iv2, do_encrypt); 556280304Sjkim } else { 557280304Sjkim DES_cbc_encrypt(buf, obuf, (long)l, &ks, &iv, do_encrypt); 558280304Sjkim if (l >= 8) 559280304Sjkim memcpy(iv, &(buf[l - 8]), 8); 560280304Sjkim } 56155714Skris 562280304Sjkim if (uflag) 563280304Sjkim ll = uufread(&(buf[rem]), 1, BUFSIZE, DES_IN); 564280304Sjkim else 565280304Sjkim ll = fread(&(buf[rem]), 1, BUFSIZE, DES_IN); 566280304Sjkim ll += rem; 567280304Sjkim rem = ll % 8; 568280304Sjkim ll -= rem; 569280304Sjkim if (feof(DES_IN) && (ll == 0)) { 570280304Sjkim last = obuf[l - 1]; 57155714Skris 572280304Sjkim if ((last > 7) || (last < 0)) { 573280304Sjkim fputs("The file was not decrypted correctly.\n", stderr); 574280304Sjkim Exit = 8; 575280304Sjkim last = 0; 576280304Sjkim } 577280304Sjkim l = l - 8 + last; 578280304Sjkim } 579280304Sjkim i = 0; 580280304Sjkim if (cflag) 581280304Sjkim DES_cbc_cksum(obuf, 582280304Sjkim (DES_cblock *)cksum, (long)l / 8 * 8, &ks, 583280304Sjkim (DES_cblock *)cksum); 584280304Sjkim while (i != l) { 585280304Sjkim j = fwrite(obuf, 1, (unsigned int)l - i, DES_OUT); 586280304Sjkim if (j == -1) { 587280304Sjkim perror("Write error"); 588280304Sjkim Exit = 7; 589280304Sjkim goto problems; 590280304Sjkim } 591280304Sjkim i += j; 592280304Sjkim } 593280304Sjkim l = ll; 594280304Sjkim if ((l == 0) && feof(DES_IN)) 595280304Sjkim break; 596280304Sjkim } 597280304Sjkim } 598280304Sjkim if (cflag) { 599280304Sjkim l = 0; 600280304Sjkim if (cksumname[0] != '\0') { 601280304Sjkim if ((O = fopen(cksumname, "w")) != NULL) { 602280304Sjkim CKSUM_OUT = O; 603280304Sjkim l = 1; 604280304Sjkim } 605280304Sjkim } 606280304Sjkim for (i = 0; i < 8; i++) 607280304Sjkim fprintf(CKSUM_OUT, "%02X", cksum[i]); 608280304Sjkim fprintf(CKSUM_OUT, "\n"); 609280304Sjkim if (l) 610280304Sjkim fclose(CKSUM_OUT); 611280304Sjkim } 612280304Sjkim problems: 613280304Sjkim OPENSSL_cleanse(buf, sizeof(buf)); 614280304Sjkim OPENSSL_cleanse(obuf, sizeof(obuf)); 615280304Sjkim OPENSSL_cleanse(&ks, sizeof(ks)); 616280304Sjkim OPENSSL_cleanse(&ks2, sizeof(ks2)); 617280304Sjkim OPENSSL_cleanse(iv, sizeof(iv)); 618280304Sjkim OPENSSL_cleanse(iv2, sizeof(iv2)); 619280304Sjkim OPENSSL_cleanse(kk, sizeof(kk)); 620280304Sjkim OPENSSL_cleanse(k2, sizeof(k2)); 621280304Sjkim OPENSSL_cleanse(uubuf, sizeof(uubuf)); 622280304Sjkim OPENSSL_cleanse(b, sizeof(b)); 623280304Sjkim OPENSSL_cleanse(bb, sizeof(bb)); 624280304Sjkim OPENSSL_cleanse(cksum, sizeof(cksum)); 625280304Sjkim if (Exit) 626280304Sjkim EXIT(Exit); 627280304Sjkim} 628280304Sjkim 62955714Skris/* We ignore this parameter but it should be > ~50 I believe */ 63055714Skrisint uufwrite(unsigned char *data, int size, unsigned int num, FILE *fp) 631280304Sjkim{ 632280304Sjkim int i, j, left, rem, ret = num; 633280304Sjkim static int start = 1; 63455714Skris 635280304Sjkim if (start) { 636280304Sjkim fprintf(fp, "begin 600 %s\n", 637280304Sjkim (uuname[0] == '\0') ? "text.d" : uuname); 638280304Sjkim start = 0; 639280304Sjkim } 64055714Skris 641280304Sjkim if (uubufnum) { 642280304Sjkim if (uubufnum + num < 45) { 643280304Sjkim memcpy(&(uubuf[uubufnum]), data, (unsigned int)num); 644280304Sjkim uubufnum += num; 645280304Sjkim return (num); 646280304Sjkim } else { 647280304Sjkim i = 45 - uubufnum; 648280304Sjkim memcpy(&(uubuf[uubufnum]), data, (unsigned int)i); 649280304Sjkim j = uuencode((unsigned char *)uubuf, 45, b); 650280304Sjkim fwrite(b, 1, (unsigned int)j, fp); 651280304Sjkim uubufnum = 0; 652280304Sjkim data += i; 653280304Sjkim num -= i; 654280304Sjkim } 655280304Sjkim } 65655714Skris 657280304Sjkim for (i = 0; i < (((int)num) - INUUBUFN); i += INUUBUFN) { 658280304Sjkim j = uuencode(&(data[i]), INUUBUFN, b); 659280304Sjkim fwrite(b, 1, (unsigned int)j, fp); 660280304Sjkim } 661280304Sjkim rem = (num - i) % 45; 662280304Sjkim left = (num - i - rem); 663280304Sjkim if (left) { 664280304Sjkim j = uuencode(&(data[i]), left, b); 665280304Sjkim fwrite(b, 1, (unsigned int)j, fp); 666280304Sjkim i += left; 667280304Sjkim } 668280304Sjkim if (i != num) { 669280304Sjkim memcpy(uubuf, &(data[i]), (unsigned int)rem); 670280304Sjkim uubufnum = rem; 671280304Sjkim } 672280304Sjkim return (ret); 673280304Sjkim} 67455714Skris 67555714Skrisvoid uufwriteEnd(FILE *fp) 676280304Sjkim{ 677280304Sjkim int j; 678280304Sjkim static const char *end = " \nend\n"; 67955714Skris 680280304Sjkim if (uubufnum != 0) { 681280304Sjkim uubuf[uubufnum] = '\0'; 682280304Sjkim uubuf[uubufnum + 1] = '\0'; 683280304Sjkim uubuf[uubufnum + 2] = '\0'; 684280304Sjkim j = uuencode(uubuf, uubufnum, b); 685280304Sjkim fwrite(b, 1, (unsigned int)j, fp); 686280304Sjkim } 687280304Sjkim fwrite(end, 1, strlen(end), fp); 688280304Sjkim} 68955714Skris 690280304Sjkim/* 691280304Sjkim * int size: should always be > ~ 60; I actually ignore this parameter :-) 692280304Sjkim */ 69355714Skrisint uufread(unsigned char *out, int size, unsigned int num, FILE *fp) 694280304Sjkim{ 695280304Sjkim int i, j, tot; 696280304Sjkim static int done = 0; 697280304Sjkim static int valid = 0; 698280304Sjkim static int start = 1; 69955714Skris 700280304Sjkim if (start) { 701280304Sjkim for (;;) { 702280304Sjkim b[0] = '\0'; 703280304Sjkim fgets((char *)b, 300, fp); 704280304Sjkim if (b[0] == '\0') { 705280304Sjkim fprintf(stderr, "no 'begin' found in uuencoded input\n"); 706280304Sjkim return (-1); 707280304Sjkim } 708280304Sjkim if (strncmp((char *)b, "begin ", 6) == 0) 709280304Sjkim break; 710280304Sjkim } 711280304Sjkim start = 0; 712280304Sjkim } 713280304Sjkim if (done) 714280304Sjkim return (0); 715280304Sjkim tot = 0; 716280304Sjkim if (valid) { 717280304Sjkim memcpy(out, bb, (unsigned int)valid); 718280304Sjkim tot = valid; 719280304Sjkim valid = 0; 720280304Sjkim } 721280304Sjkim for (;;) { 722280304Sjkim b[0] = '\0'; 723280304Sjkim fgets((char *)b, 300, fp); 724280304Sjkim if (b[0] == '\0') 725280304Sjkim break; 726280304Sjkim i = strlen((char *)b); 727280304Sjkim if ((b[0] == 'e') && (b[1] == 'n') && (b[2] == 'd')) { 728280304Sjkim done = 1; 729280304Sjkim while (!feof(fp)) { 730280304Sjkim fgets((char *)b, 300, fp); 731280304Sjkim } 732280304Sjkim break; 733280304Sjkim } 734280304Sjkim i = uudecode(b, i, bb); 735280304Sjkim if (i < 0) 736280304Sjkim break; 737280304Sjkim if ((i + tot + 8) > num) { 738280304Sjkim /* num to copy to make it a multiple of 8 */ 739280304Sjkim j = (num / 8 * 8) - tot - 8; 740280304Sjkim memcpy(&(out[tot]), bb, (unsigned int)j); 741280304Sjkim tot += j; 742280304Sjkim memcpy(bb, &(bb[j]), (unsigned int)i - j); 743280304Sjkim valid = i - j; 744280304Sjkim break; 745280304Sjkim } 746280304Sjkim memcpy(&(out[tot]), bb, (unsigned int)i); 747280304Sjkim tot += i; 748280304Sjkim } 749280304Sjkim return (tot); 750280304Sjkim} 75155714Skris 75255714Skris#define ccc2l(c,l) (l =((DES_LONG)(*((c)++)))<<16, \ 753280304Sjkim l|=((DES_LONG)(*((c)++)))<< 8, \ 754280304Sjkim l|=((DES_LONG)(*((c)++)))) 75555714Skris 75655714Skris#define l2ccc(l,c) (*((c)++)=(unsigned char)(((l)>>16)&0xff), \ 75755714Skris *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ 75855714Skris *((c)++)=(unsigned char)(((l) )&0xff)) 75955714Skris 76055714Skrisint uuencode(unsigned char *in, int num, unsigned char *out) 761280304Sjkim{ 762280304Sjkim int j, i, n, tot = 0; 763280304Sjkim DES_LONG l; 764280304Sjkim register unsigned char *p; 765280304Sjkim p = out; 76655714Skris 767280304Sjkim for (j = 0; j < num; j += 45) { 768280304Sjkim if (j + 45 > num) 769280304Sjkim i = (num - j); 770280304Sjkim else 771280304Sjkim i = 45; 772280304Sjkim *(p++) = i + ' '; 773280304Sjkim for (n = 0; n < i; n += 3) { 774280304Sjkim ccc2l(in, l); 775280304Sjkim *(p++) = ((l >> 18) & 0x3f) + ' '; 776280304Sjkim *(p++) = ((l >> 12) & 0x3f) + ' '; 777280304Sjkim *(p++) = ((l >> 6) & 0x3f) + ' '; 778280304Sjkim *(p++) = ((l) & 0x3f) + ' '; 779280304Sjkim tot += 4; 780280304Sjkim } 781280304Sjkim *(p++) = '\n'; 782280304Sjkim tot += 2; 783280304Sjkim } 784280304Sjkim *p = '\0'; 785280304Sjkim l = 0; 786280304Sjkim return (tot); 787280304Sjkim} 78855714Skris 78955714Skrisint uudecode(unsigned char *in, int num, unsigned char *out) 790280304Sjkim{ 791280304Sjkim int j, i, k; 792280304Sjkim unsigned int n = 0, space = 0; 793280304Sjkim DES_LONG l; 794280304Sjkim DES_LONG w, x, y, z; 795280304Sjkim unsigned int blank = (unsigned int)'\n' - ' '; 79655714Skris 797280304Sjkim for (j = 0; j < num;) { 798280304Sjkim n = *(in++) - ' '; 799280304Sjkim if (n == blank) { 800280304Sjkim n = 0; 801280304Sjkim in--; 802280304Sjkim } 803280304Sjkim if (n > 60) { 804280304Sjkim fprintf(stderr, "uuencoded line length too long\n"); 805280304Sjkim return (-1); 806280304Sjkim } 807280304Sjkim j++; 80855714Skris 809280304Sjkim for (i = 0; i < n; j += 4, i += 3) { 810280304Sjkim /* 811280304Sjkim * the following is for cases where spaces are removed from 812280304Sjkim * lines. 813280304Sjkim */ 814280304Sjkim if (space) { 815280304Sjkim w = x = y = z = 0; 816280304Sjkim } else { 817280304Sjkim w = *(in++) - ' '; 818280304Sjkim x = *(in++) - ' '; 819280304Sjkim y = *(in++) - ' '; 820280304Sjkim z = *(in++) - ' '; 821280304Sjkim } 822280304Sjkim if ((w > 63) || (x > 63) || (y > 63) || (z > 63)) { 823280304Sjkim k = 0; 824280304Sjkim if (w == blank) 825280304Sjkim k = 1; 826280304Sjkim if (x == blank) 827280304Sjkim k = 2; 828280304Sjkim if (y == blank) 829280304Sjkim k = 3; 830280304Sjkim if (z == blank) 831280304Sjkim k = 4; 832280304Sjkim space = 1; 833280304Sjkim switch (k) { 834280304Sjkim case 1: 835280304Sjkim w = 0; 836280304Sjkim in--; 837280304Sjkim case 2: 838280304Sjkim x = 0; 839280304Sjkim in--; 840280304Sjkim case 3: 841280304Sjkim y = 0; 842280304Sjkim in--; 843280304Sjkim case 4: 844280304Sjkim z = 0; 845280304Sjkim in--; 846280304Sjkim break; 847280304Sjkim case 0: 848280304Sjkim space = 0; 849280304Sjkim fprintf(stderr, "bad uuencoded data values\n"); 850280304Sjkim w = x = y = z = 0; 851280304Sjkim return (-1); 852280304Sjkim break; 853280304Sjkim } 854280304Sjkim } 855280304Sjkim l = (w << 18) | (x << 12) | (y << 6) | (z); 856280304Sjkim l2ccc(l, out); 857280304Sjkim } 858280304Sjkim if (*(in++) != '\n') { 859280304Sjkim fprintf(stderr, "missing nl in uuencoded line\n"); 860280304Sjkim w = x = y = z = 0; 861280304Sjkim return (-1); 862280304Sjkim } 863280304Sjkim j++; 864280304Sjkim } 865280304Sjkim *out = '\0'; 866280304Sjkim w = x = y = z = 0; 867280304Sjkim return (n); 868280304Sjkim} 869