Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 1 | /* crypto/des/des.c */ |
| 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * This package is an SSL implementation written |
| 6 | * by Eric Young (eay@cryptsoft.com). |
| 7 | * The implementation was written so as to conform with Netscapes SSL. |
| 8 | * |
| 9 | * This library is free for commercial and non-commercial use as long as |
| 10 | * the following conditions are aheared to. The following conditions |
| 11 | * apply to all code found in this distribution, be it the RC4, RSA, |
| 12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
| 13 | * included with this distribution is covered by the same copyright terms |
| 14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
| 15 | * |
| 16 | * Copyright remains Eric Young's, and as such any Copyright notices in |
| 17 | * the code are not to be removed. |
| 18 | * If this package is used in a product, Eric Young should be given attribution |
| 19 | * as the author of the parts of the library used. |
| 20 | * This can be in the form of a textual message at program startup or |
| 21 | * in documentation (online or textual) provided with the package. |
| 22 | * |
| 23 | * Redistribution and use in source and binary forms, with or without |
| 24 | * modification, are permitted provided that the following conditions |
| 25 | * are met: |
| 26 | * 1. Redistributions of source code must retain the copyright |
| 27 | * notice, this list of conditions and the following disclaimer. |
| 28 | * 2. Redistributions in binary form must reproduce the above copyright |
| 29 | * notice, this list of conditions and the following disclaimer in the |
| 30 | * documentation and/or other materials provided with the distribution. |
| 31 | * 3. All advertising materials mentioning features or use of this software |
| 32 | * must display the following acknowledgement: |
| 33 | * "This product includes cryptographic software written by |
| 34 | * Eric Young (eay@cryptsoft.com)" |
| 35 | * The word 'cryptographic' can be left out if the rouines from the library |
| 36 | * being used are not cryptographic related :-). |
| 37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
| 38 | * the apps directory (application code) you must include an acknowledgement: |
| 39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
| 40 | * |
| 41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
| 42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 51 | * SUCH DAMAGE. |
| 52 | * |
| 53 | * The licence and distribution terms for any publically available version or |
| 54 | * derivative of this code cannot be changed. i.e. this code cannot simply be |
| 55 | * copied and put under another distribution licence |
| 56 | * [including the GNU Public Licence.] |
| 57 | */ |
| 58 | |
| 59 | #include <stdio.h> |
| 60 | #include <stdlib.h> |
| 61 | #include <string.h> |
| 62 | #include <openssl/opensslconf.h> |
| 63 | #ifndef OPENSSL_SYS_MSDOS |
| 64 | #ifndef OPENSSL_SYS_VMS |
| 65 | #include OPENSSL_UNISTD |
| 66 | #else /* OPENSSL_SYS_VMS */ |
| 67 | #ifdef __DECC |
| 68 | #include <unistd.h> |
| 69 | #else /* not __DECC */ |
| 70 | #include <math.h> |
| 71 | #endif /* __DECC */ |
| 72 | #endif /* OPENSSL_SYS_VMS */ |
| 73 | #else /* OPENSSL_SYS_MSDOS */ |
| 74 | #include <io.h> |
| 75 | #endif |
| 76 | |
| 77 | #include <time.h> |
| 78 | #include "des_ver.h" |
| 79 | |
| 80 | #ifdef OPENSSL_SYS_VMS |
| 81 | #include <types.h> |
| 82 | #include <stat.h> |
| 83 | #else |
| 84 | #ifndef _IRIX |
| 85 | #include <sys/types.h> |
| 86 | #endif |
| 87 | #include <sys/stat.h> |
| 88 | #endif |
| 89 | #include <openssl/des.h> |
| 90 | #include <openssl/rand.h> |
| 91 | #include <openssl/ui_compat.h> |
| 92 | |
| 93 | void usage(void); |
| 94 | void doencryption(void); |
| 95 | int uufwrite(unsigned char *data, int size, unsigned int num, FILE *fp); |
| 96 | void uufwriteEnd(FILE *fp); |
| 97 | int uufread(unsigned char *out,int size,unsigned int num,FILE *fp); |
| 98 | int uuencode(unsigned char *in,int num,unsigned char *out); |
| 99 | int uudecode(unsigned char *in,int num,unsigned char *out); |
| 100 | void DES_3cbc_encrypt(DES_cblock *input,DES_cblock *output,long length, |
| 101 | DES_key_schedule sk1,DES_key_schedule sk2, |
| 102 | DES_cblock *ivec1,DES_cblock *ivec2,int enc); |
| 103 | #ifdef OPENSSL_SYS_VMS |
| 104 | #define EXIT(a) exit(a&0x10000000L) |
| 105 | #else |
| 106 | #define EXIT(a) exit(a) |
| 107 | #endif |
| 108 | |
| 109 | #define BUFSIZE (8*1024) |
| 110 | #define VERIFY 1 |
| 111 | #define KEYSIZ 8 |
| 112 | #define KEYSIZB 1024 /* should hit tty line limit first :-) */ |
| 113 | char key[KEYSIZB+1]; |
| 114 | int do_encrypt,longk=0; |
| 115 | FILE *DES_IN,*DES_OUT,*CKSUM_OUT; |
| 116 | char uuname[200]; |
| 117 | unsigned char uubuf[50]; |
| 118 | int uubufnum=0; |
| 119 | #define INUUBUFN (45*100) |
| 120 | #define OUTUUBUF (65*100) |
| 121 | unsigned char b[OUTUUBUF]; |
| 122 | unsigned char bb[300]; |
| 123 | DES_cblock cksum={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; |
| 124 | char cksumname[200]=""; |
| 125 | |
| 126 | int vflag,cflag,eflag,dflag,kflag,bflag,fflag,sflag,uflag,flag3,hflag,error; |
| 127 | |
| 128 | int main(int argc, char **argv) |
| 129 | { |
| 130 | int i; |
| 131 | struct stat ins,outs; |
| 132 | char *p; |
| 133 | char *in=NULL,*out=NULL; |
| 134 | |
| 135 | vflag=cflag=eflag=dflag=kflag=hflag=bflag=fflag=sflag=uflag=flag3=0; |
| 136 | error=0; |
| 137 | memset(key,0,sizeof(key)); |
| 138 | |
| 139 | for (i=1; i<argc; i++) |
| 140 | { |
| 141 | p=argv[i]; |
| 142 | if ((p[0] == '-') && (p[1] != '\0')) |
| 143 | { |
| 144 | p++; |
| 145 | while (*p) |
| 146 | { |
| 147 | switch (*(p++)) |
| 148 | { |
| 149 | case '3': |
| 150 | flag3=1; |
| 151 | longk=1; |
| 152 | break; |
| 153 | case 'c': |
| 154 | cflag=1; |
| 155 | strncpy(cksumname,p,200); |
| 156 | cksumname[sizeof(cksumname)-1]='\0'; |
| 157 | p+=strlen(cksumname); |
| 158 | break; |
| 159 | case 'C': |
| 160 | cflag=1; |
| 161 | longk=1; |
| 162 | strncpy(cksumname,p,200); |
| 163 | cksumname[sizeof(cksumname)-1]='\0'; |
| 164 | p+=strlen(cksumname); |
| 165 | break; |
| 166 | case 'e': |
| 167 | eflag=1; |
| 168 | break; |
| 169 | case 'v': |
| 170 | vflag=1; |
| 171 | break; |
| 172 | case 'E': |
| 173 | eflag=1; |
| 174 | longk=1; |
| 175 | break; |
| 176 | case 'd': |
| 177 | dflag=1; |
| 178 | break; |
| 179 | case 'D': |
| 180 | dflag=1; |
| 181 | longk=1; |
| 182 | break; |
| 183 | case 'b': |
| 184 | bflag=1; |
| 185 | break; |
| 186 | case 'f': |
| 187 | fflag=1; |
| 188 | break; |
| 189 | case 's': |
| 190 | sflag=1; |
| 191 | break; |
| 192 | case 'u': |
| 193 | uflag=1; |
| 194 | strncpy(uuname,p,200); |
| 195 | uuname[sizeof(uuname)-1]='\0'; |
| 196 | p+=strlen(uuname); |
| 197 | break; |
| 198 | case 'h': |
| 199 | hflag=1; |
| 200 | break; |
| 201 | case 'k': |
| 202 | kflag=1; |
| 203 | if ((i+1) == argc) |
| 204 | { |
| 205 | fputs("must have a key with the -k option\n",stderr); |
| 206 | error=1; |
| 207 | } |
| 208 | else |
| 209 | { |
| 210 | int j; |
| 211 | |
| 212 | i++; |
| 213 | strncpy(key,argv[i],KEYSIZB); |
| 214 | for (j=strlen(argv[i])-1; j>=0; j--) |
| 215 | argv[i][j]='\0'; |
| 216 | } |
| 217 | break; |
| 218 | default: |
| 219 | fprintf(stderr,"'%c' unknown flag\n",p[-1]); |
| 220 | error=1; |
| 221 | break; |
| 222 | } |
| 223 | } |
| 224 | } |
| 225 | else |
| 226 | { |
| 227 | if (in == NULL) |
| 228 | in=argv[i]; |
| 229 | else if (out == NULL) |
| 230 | out=argv[i]; |
| 231 | else |
| 232 | error=1; |
| 233 | } |
| 234 | } |
| 235 | if (error) usage(); |
| 236 | /* We either |
| 237 | * do checksum or |
| 238 | * do encrypt or |
| 239 | * do decrypt or |
| 240 | * do decrypt then ckecksum or |
| 241 | * do checksum then encrypt |
| 242 | */ |
| 243 | if (((eflag+dflag) == 1) || cflag) |
| 244 | { |
| 245 | if (eflag) do_encrypt=DES_ENCRYPT; |
| 246 | if (dflag) do_encrypt=DES_DECRYPT; |
| 247 | } |
| 248 | else |
| 249 | { |
| 250 | if (vflag) |
| 251 | { |
| 252 | #ifndef _Windows |
| 253 | fprintf(stderr,"des(1) built with %s\n",libdes_version); |
| 254 | #endif |
| 255 | EXIT(1); |
| 256 | } |
| 257 | else usage(); |
| 258 | } |
| 259 | |
| 260 | #ifndef _Windows |
| 261 | if (vflag) fprintf(stderr,"des(1) built with %s\n",libdes_version); |
| 262 | #endif |
| 263 | if ( (in != NULL) && |
| 264 | (out != NULL) && |
| 265 | #ifndef OPENSSL_SYS_MSDOS |
| 266 | (stat(in,&ins) != -1) && |
| 267 | (stat(out,&outs) != -1) && |
| 268 | (ins.st_dev == outs.st_dev) && |
| 269 | (ins.st_ino == outs.st_ino)) |
| 270 | #else /* OPENSSL_SYS_MSDOS */ |
| 271 | (strcmp(in,out) == 0)) |
| 272 | #endif |
| 273 | { |
| 274 | fputs("input and output file are the same\n",stderr); |
| 275 | EXIT(3); |
| 276 | } |
| 277 | |
| 278 | if (!kflag) |
| 279 | if (des_read_pw_string(key,KEYSIZB+1,"Enter key:",eflag?VERIFY:0)) |
| 280 | { |
| 281 | fputs("password error\n",stderr); |
| 282 | EXIT(2); |
| 283 | } |
| 284 | |
| 285 | if (in == NULL) |
| 286 | DES_IN=stdin; |
| 287 | else if ((DES_IN=fopen(in,"r")) == NULL) |
| 288 | { |
| 289 | perror("opening input file"); |
| 290 | EXIT(4); |
| 291 | } |
| 292 | |
| 293 | CKSUM_OUT=stdout; |
| 294 | if (out == NULL) |
| 295 | { |
| 296 | DES_OUT=stdout; |
| 297 | CKSUM_OUT=stderr; |
| 298 | } |
| 299 | else if ((DES_OUT=fopen(out,"w")) == NULL) |
| 300 | { |
| 301 | perror("opening output file"); |
| 302 | EXIT(5); |
| 303 | } |
| 304 | |
| 305 | #ifdef OPENSSL_SYS_MSDOS |
| 306 | /* This should set the file to binary mode. */ |
| 307 | { |
| 308 | #include <fcntl.h> |
| 309 | if (!(uflag && dflag)) |
| 310 | setmode(fileno(DES_IN),O_BINARY); |
| 311 | if (!(uflag && eflag)) |
| 312 | setmode(fileno(DES_OUT),O_BINARY); |
| 313 | } |
| 314 | #endif |
| 315 | |
| 316 | doencryption(); |
| 317 | fclose(DES_IN); |
| 318 | fclose(DES_OUT); |
| 319 | EXIT(0); |
| 320 | } |
| 321 | |
| 322 | void usage(void) |
| 323 | { |
| 324 | char **u; |
| 325 | static const char *Usage[]={ |
| 326 | "des <options> [input-file [output-file]]", |
| 327 | "options:", |
| 328 | "-v : des(1) version number", |
| 329 | "-e : encrypt using SunOS compatible user key to DES key conversion.", |
| 330 | "-E : encrypt ", |
| 331 | "-d : decrypt using SunOS compatible user key to DES key conversion.", |
| 332 | "-D : decrypt ", |
| 333 | "-c[ckname] : generate a cbc_cksum using SunOS compatible user key to", |
| 334 | " DES key conversion and output to ckname (stdout default,", |
| 335 | " stderr if data being output on stdout). The checksum is", |
| 336 | " generated before encryption and after decryption if used", |
| 337 | " in conjunction with -[eEdD].", |
| 338 | "-C[ckname] : generate a cbc_cksum as for -c but compatible with -[ED].", |
| 339 | "-k key : use key 'key'", |
| 340 | "-h : the key that is entered will be a hexadecimal number", |
| 341 | " that is used directly as the des key", |
| 342 | "-u[uuname] : input file is uudecoded if -[dD] or output uuencoded data if -[eE]", |
| 343 | " (uuname is the filename to put in the uuencode header).", |
| 344 | "-b : encrypt using DES in ecb encryption mode, the default is cbc mode.", |
| 345 | "-3 : encrypt using triple DES encryption. This uses 2 keys", |
| 346 | " generated from the input key. If the input key is less", |
| 347 | " than 8 characters long, this is equivalent to normal", |
| 348 | " encryption. Default is triple cbc, -b makes it triple ecb.", |
| 349 | NULL |
| 350 | }; |
| 351 | for (u=(char **)Usage; *u; u++) |
| 352 | { |
| 353 | fputs(*u,stderr); |
| 354 | fputc('\n',stderr); |
| 355 | } |
| 356 | |
| 357 | EXIT(1); |
| 358 | } |
| 359 | |
| 360 | void doencryption(void) |
| 361 | { |
| 362 | #ifdef _LIBC |
| 363 | extern unsigned long time(); |
| 364 | #endif |
| 365 | |
| 366 | register int i; |
| 367 | DES_key_schedule ks,ks2; |
| 368 | DES_cblock iv,iv2; |
| 369 | char *p; |
| 370 | int num=0,j,k,l,rem,ll,len,last,ex=0; |
| 371 | DES_cblock kk,k2; |
| 372 | FILE *O; |
| 373 | int Exit=0; |
| 374 | #ifndef OPENSSL_SYS_MSDOS |
| 375 | static unsigned char buf[BUFSIZE+8],obuf[BUFSIZE+8]; |
| 376 | #else |
| 377 | static unsigned char *buf=NULL,*obuf=NULL; |
| 378 | |
| 379 | if (buf == NULL) |
| 380 | { |
| 381 | if ( (( buf=OPENSSL_malloc(BUFSIZE+8)) == NULL) || |
| 382 | ((obuf=OPENSSL_malloc(BUFSIZE+8)) == NULL)) |
| 383 | { |
| 384 | fputs("Not enough memory\n",stderr); |
| 385 | Exit=10; |
| 386 | goto problems; |
| 387 | } |
| 388 | } |
| 389 | #endif |
| 390 | |
| 391 | if (hflag) |
| 392 | { |
| 393 | j=(flag3?16:8); |
| 394 | p=key; |
| 395 | for (i=0; i<j; i++) |
| 396 | { |
| 397 | k=0; |
| 398 | if ((*p <= '9') && (*p >= '0')) |
| 399 | k=(*p-'0')<<4; |
| 400 | else if ((*p <= 'f') && (*p >= 'a')) |
| 401 | k=(*p-'a'+10)<<4; |
| 402 | else if ((*p <= 'F') && (*p >= 'A')) |
| 403 | k=(*p-'A'+10)<<4; |
| 404 | else |
| 405 | { |
| 406 | fputs("Bad hex key\n",stderr); |
| 407 | Exit=9; |
| 408 | goto problems; |
| 409 | } |
| 410 | p++; |
| 411 | if ((*p <= '9') && (*p >= '0')) |
| 412 | k|=(*p-'0'); |
| 413 | else if ((*p <= 'f') && (*p >= 'a')) |
| 414 | k|=(*p-'a'+10); |
| 415 | else if ((*p <= 'F') && (*p >= 'A')) |
| 416 | k|=(*p-'A'+10); |
| 417 | else |
| 418 | { |
| 419 | fputs("Bad hex key\n",stderr); |
| 420 | Exit=9; |
| 421 | goto problems; |
| 422 | } |
| 423 | p++; |
| 424 | if (i < 8) |
| 425 | kk[i]=k; |
| 426 | else |
| 427 | k2[i-8]=k; |
| 428 | } |
| 429 | DES_set_key_unchecked(&k2,&ks2); |
| 430 | OPENSSL_cleanse(k2,sizeof(k2)); |
| 431 | } |
| 432 | else if (longk || flag3) |
| 433 | { |
| 434 | if (flag3) |
| 435 | { |
| 436 | DES_string_to_2keys(key,&kk,&k2); |
| 437 | DES_set_key_unchecked(&k2,&ks2); |
| 438 | OPENSSL_cleanse(k2,sizeof(k2)); |
| 439 | } |
| 440 | else |
| 441 | DES_string_to_key(key,&kk); |
| 442 | } |
| 443 | else |
| 444 | for (i=0; i<KEYSIZ; i++) |
| 445 | { |
| 446 | l=0; |
| 447 | k=key[i]; |
| 448 | for (j=0; j<8; j++) |
| 449 | { |
| 450 | if (k&1) l++; |
| 451 | k>>=1; |
| 452 | } |
| 453 | if (l & 1) |
| 454 | kk[i]=key[i]&0x7f; |
| 455 | else |
| 456 | kk[i]=key[i]|0x80; |
| 457 | } |
| 458 | |
| 459 | DES_set_key_unchecked(&kk,&ks); |
| 460 | OPENSSL_cleanse(key,sizeof(key)); |
| 461 | OPENSSL_cleanse(kk,sizeof(kk)); |
| 462 | /* woops - A bug that does not showup under unix :-( */ |
| 463 | memset(iv,0,sizeof(iv)); |
| 464 | memset(iv2,0,sizeof(iv2)); |
| 465 | |
| 466 | l=1; |
| 467 | rem=0; |
| 468 | /* first read */ |
| 469 | if (eflag || (!dflag && cflag)) |
| 470 | { |
| 471 | for (;;) |
| 472 | { |
| 473 | num=l=fread(&(buf[rem]),1,BUFSIZE,DES_IN); |
| 474 | l+=rem; |
| 475 | num+=rem; |
| 476 | if (l < 0) |
| 477 | { |
| 478 | perror("read error"); |
| 479 | Exit=6; |
| 480 | goto problems; |
| 481 | } |
| 482 | |
| 483 | rem=l%8; |
| 484 | len=l-rem; |
| 485 | if (feof(DES_IN)) |
| 486 | { |
| 487 | for (i=7-rem; i>0; i--) |
| 488 | RAND_pseudo_bytes(buf + l++, 1); |
| 489 | buf[l++]=rem; |
| 490 | ex=1; |
| 491 | len+=rem; |
| 492 | } |
| 493 | else |
| 494 | l-=rem; |
| 495 | |
| 496 | if (cflag) |
| 497 | { |
| 498 | DES_cbc_cksum(buf,&cksum, |
| 499 | (long)len,&ks,&cksum); |
| 500 | if (!eflag) |
| 501 | { |
| 502 | if (feof(DES_IN)) break; |
| 503 | else continue; |
| 504 | } |
| 505 | } |
| 506 | |
| 507 | if (bflag && !flag3) |
| 508 | for (i=0; i<l; i+=8) |
| 509 | DES_ecb_encrypt( |
| 510 | (DES_cblock *)&(buf[i]), |
| 511 | (DES_cblock *)&(obuf[i]), |
| 512 | &ks,do_encrypt); |
| 513 | else if (flag3 && bflag) |
| 514 | for (i=0; i<l; i+=8) |
| 515 | DES_ecb2_encrypt( |
| 516 | (DES_cblock *)&(buf[i]), |
| 517 | (DES_cblock *)&(obuf[i]), |
| 518 | &ks,&ks2,do_encrypt); |
| 519 | else if (flag3 && !bflag) |
| 520 | { |
| 521 | char tmpbuf[8]; |
| 522 | |
| 523 | if (rem) memcpy(tmpbuf,&(buf[l]), |
| 524 | (unsigned int)rem); |
| 525 | DES_3cbc_encrypt( |
| 526 | (DES_cblock *)buf,(DES_cblock *)obuf, |
| 527 | (long)l,ks,ks2,&iv, |
| 528 | &iv2,do_encrypt); |
| 529 | if (rem) memcpy(&(buf[l]),tmpbuf, |
| 530 | (unsigned int)rem); |
| 531 | } |
| 532 | else |
| 533 | { |
| 534 | DES_cbc_encrypt( |
| 535 | buf,obuf, |
| 536 | (long)l,&ks,&iv,do_encrypt); |
| 537 | if (l >= 8) memcpy(iv,&(obuf[l-8]),8); |
| 538 | } |
| 539 | if (rem) memcpy(buf,&(buf[l]),(unsigned int)rem); |
| 540 | |
| 541 | i=0; |
| 542 | while (i < l) |
| 543 | { |
| 544 | if (uflag) |
| 545 | j=uufwrite(obuf,1,(unsigned int)l-i, |
| 546 | DES_OUT); |
| 547 | else |
| 548 | j=fwrite(obuf,1,(unsigned int)l-i, |
| 549 | DES_OUT); |
| 550 | if (j == -1) |
| 551 | { |
| 552 | perror("Write error"); |
| 553 | Exit=7; |
| 554 | goto problems; |
| 555 | } |
| 556 | i+=j; |
| 557 | } |
| 558 | if (feof(DES_IN)) |
| 559 | { |
| 560 | if (uflag) uufwriteEnd(DES_OUT); |
| 561 | break; |
| 562 | } |
| 563 | } |
| 564 | } |
| 565 | else /* decrypt */ |
| 566 | { |
| 567 | ex=1; |
| 568 | for (;;) |
| 569 | { |
| 570 | if (ex) { |
| 571 | if (uflag) |
| 572 | l=uufread(buf,1,BUFSIZE,DES_IN); |
| 573 | else |
| 574 | l=fread(buf,1,BUFSIZE,DES_IN); |
| 575 | ex=0; |
| 576 | rem=l%8; |
| 577 | l-=rem; |
| 578 | } |
| 579 | if (l < 0) |
| 580 | { |
| 581 | perror("read error"); |
| 582 | Exit=6; |
| 583 | goto problems; |
| 584 | } |
| 585 | |
| 586 | if (bflag && !flag3) |
| 587 | for (i=0; i<l; i+=8) |
| 588 | DES_ecb_encrypt( |
| 589 | (DES_cblock *)&(buf[i]), |
| 590 | (DES_cblock *)&(obuf[i]), |
| 591 | &ks,do_encrypt); |
| 592 | else if (flag3 && bflag) |
| 593 | for (i=0; i<l; i+=8) |
| 594 | DES_ecb2_encrypt( |
| 595 | (DES_cblock *)&(buf[i]), |
| 596 | (DES_cblock *)&(obuf[i]), |
| 597 | &ks,&ks2,do_encrypt); |
| 598 | else if (flag3 && !bflag) |
| 599 | { |
| 600 | DES_3cbc_encrypt( |
| 601 | (DES_cblock *)buf,(DES_cblock *)obuf, |
| 602 | (long)l,ks,ks2,&iv, |
| 603 | &iv2,do_encrypt); |
| 604 | } |
| 605 | else |
| 606 | { |
| 607 | DES_cbc_encrypt( |
| 608 | buf,obuf, |
| 609 | (long)l,&ks,&iv,do_encrypt); |
| 610 | if (l >= 8) memcpy(iv,&(buf[l-8]),8); |
| 611 | } |
| 612 | |
| 613 | if (uflag) |
| 614 | ll=uufread(&(buf[rem]),1,BUFSIZE,DES_IN); |
| 615 | else |
| 616 | ll=fread(&(buf[rem]),1,BUFSIZE,DES_IN); |
| 617 | ll+=rem; |
| 618 | rem=ll%8; |
| 619 | ll-=rem; |
| 620 | if (feof(DES_IN) && (ll == 0)) |
| 621 | { |
| 622 | last=obuf[l-1]; |
| 623 | |
| 624 | if ((last > 7) || (last < 0)) |
| 625 | { |
| 626 | fputs("The file was not decrypted correctly.\n", |
| 627 | stderr); |
| 628 | Exit=8; |
| 629 | last=0; |
| 630 | } |
| 631 | l=l-8+last; |
| 632 | } |
| 633 | i=0; |
| 634 | if (cflag) DES_cbc_cksum(obuf, |
| 635 | (DES_cblock *)cksum,(long)l/8*8,&ks, |
| 636 | (DES_cblock *)cksum); |
| 637 | while (i != l) |
| 638 | { |
| 639 | j=fwrite(obuf,1,(unsigned int)l-i,DES_OUT); |
| 640 | if (j == -1) |
| 641 | { |
| 642 | perror("Write error"); |
| 643 | Exit=7; |
| 644 | goto problems; |
| 645 | } |
| 646 | i+=j; |
| 647 | } |
| 648 | l=ll; |
| 649 | if ((l == 0) && feof(DES_IN)) break; |
| 650 | } |
| 651 | } |
| 652 | if (cflag) |
| 653 | { |
| 654 | l=0; |
| 655 | if (cksumname[0] != '\0') |
| 656 | { |
| 657 | if ((O=fopen(cksumname,"w")) != NULL) |
| 658 | { |
| 659 | CKSUM_OUT=O; |
| 660 | l=1; |
| 661 | } |
| 662 | } |
| 663 | for (i=0; i<8; i++) |
| 664 | fprintf(CKSUM_OUT,"%02X",cksum[i]); |
| 665 | fprintf(CKSUM_OUT,"\n"); |
| 666 | if (l) fclose(CKSUM_OUT); |
| 667 | } |
| 668 | problems: |
| 669 | OPENSSL_cleanse(buf,sizeof(buf)); |
| 670 | OPENSSL_cleanse(obuf,sizeof(obuf)); |
| 671 | OPENSSL_cleanse(&ks,sizeof(ks)); |
| 672 | OPENSSL_cleanse(&ks2,sizeof(ks2)); |
| 673 | OPENSSL_cleanse(iv,sizeof(iv)); |
| 674 | OPENSSL_cleanse(iv2,sizeof(iv2)); |
| 675 | OPENSSL_cleanse(kk,sizeof(kk)); |
| 676 | OPENSSL_cleanse(k2,sizeof(k2)); |
| 677 | OPENSSL_cleanse(uubuf,sizeof(uubuf)); |
| 678 | OPENSSL_cleanse(b,sizeof(b)); |
| 679 | OPENSSL_cleanse(bb,sizeof(bb)); |
| 680 | OPENSSL_cleanse(cksum,sizeof(cksum)); |
| 681 | if (Exit) EXIT(Exit); |
| 682 | } |
| 683 | |
| 684 | /* We ignore this parameter but it should be > ~50 I believe */ |
| 685 | int uufwrite(unsigned char *data, int size, unsigned int num, FILE *fp) |
| 686 | { |
| 687 | int i,j,left,rem,ret=num; |
| 688 | static int start=1; |
| 689 | |
| 690 | if (start) |
| 691 | { |
| 692 | fprintf(fp,"begin 600 %s\n", |
| 693 | (uuname[0] == '\0')?"text.d":uuname); |
| 694 | start=0; |
| 695 | } |
| 696 | |
| 697 | if (uubufnum) |
| 698 | { |
| 699 | if (uubufnum+num < 45) |
| 700 | { |
| 701 | memcpy(&(uubuf[uubufnum]),data,(unsigned int)num); |
| 702 | uubufnum+=num; |
| 703 | return(num); |
| 704 | } |
| 705 | else |
| 706 | { |
| 707 | i=45-uubufnum; |
| 708 | memcpy(&(uubuf[uubufnum]),data,(unsigned int)i); |
| 709 | j=uuencode((unsigned char *)uubuf,45,b); |
| 710 | fwrite(b,1,(unsigned int)j,fp); |
| 711 | uubufnum=0; |
| 712 | data+=i; |
| 713 | num-=i; |
| 714 | } |
| 715 | } |
| 716 | |
| 717 | for (i=0; i<(((int)num)-INUUBUFN); i+=INUUBUFN) |
| 718 | { |
| 719 | j=uuencode(&(data[i]),INUUBUFN,b); |
| 720 | fwrite(b,1,(unsigned int)j,fp); |
| 721 | } |
| 722 | rem=(num-i)%45; |
| 723 | left=(num-i-rem); |
| 724 | if (left) |
| 725 | { |
| 726 | j=uuencode(&(data[i]),left,b); |
| 727 | fwrite(b,1,(unsigned int)j,fp); |
| 728 | i+=left; |
| 729 | } |
| 730 | if (i != num) |
| 731 | { |
| 732 | memcpy(uubuf,&(data[i]),(unsigned int)rem); |
| 733 | uubufnum=rem; |
| 734 | } |
| 735 | return(ret); |
| 736 | } |
| 737 | |
| 738 | void uufwriteEnd(FILE *fp) |
| 739 | { |
| 740 | int j; |
| 741 | static const char *end=" \nend\n"; |
| 742 | |
| 743 | if (uubufnum != 0) |
| 744 | { |
| 745 | uubuf[uubufnum]='\0'; |
| 746 | uubuf[uubufnum+1]='\0'; |
| 747 | uubuf[uubufnum+2]='\0'; |
| 748 | j=uuencode(uubuf,uubufnum,b); |
| 749 | fwrite(b,1,(unsigned int)j,fp); |
| 750 | } |
| 751 | fwrite(end,1,strlen(end),fp); |
| 752 | } |
| 753 | |
| 754 | /* int size: should always be > ~ 60; I actually ignore this parameter :-) */ |
| 755 | int uufread(unsigned char *out, int size, unsigned int num, FILE *fp) |
| 756 | { |
| 757 | int i,j,tot; |
| 758 | static int done=0; |
| 759 | static int valid=0; |
| 760 | static int start=1; |
| 761 | |
| 762 | if (start) |
| 763 | { |
| 764 | for (;;) |
| 765 | { |
| 766 | b[0]='\0'; |
| 767 | fgets((char *)b,300,fp); |
| 768 | if (b[0] == '\0') |
| 769 | { |
| 770 | fprintf(stderr,"no 'begin' found in uuencoded input\n"); |
| 771 | return(-1); |
| 772 | } |
| 773 | if (strncmp((char *)b,"begin ",6) == 0) break; |
| 774 | } |
| 775 | start=0; |
| 776 | } |
| 777 | if (done) return(0); |
| 778 | tot=0; |
| 779 | if (valid) |
| 780 | { |
| 781 | memcpy(out,bb,(unsigned int)valid); |
| 782 | tot=valid; |
| 783 | valid=0; |
| 784 | } |
| 785 | for (;;) |
| 786 | { |
| 787 | b[0]='\0'; |
| 788 | fgets((char *)b,300,fp); |
| 789 | if (b[0] == '\0') break; |
| 790 | i=strlen((char *)b); |
| 791 | if ((b[0] == 'e') && (b[1] == 'n') && (b[2] == 'd')) |
| 792 | { |
| 793 | done=1; |
| 794 | while (!feof(fp)) |
| 795 | { |
| 796 | fgets((char *)b,300,fp); |
| 797 | } |
| 798 | break; |
| 799 | } |
| 800 | i=uudecode(b,i,bb); |
| 801 | if (i < 0) break; |
| 802 | if ((i+tot+8) > num) |
| 803 | { |
| 804 | /* num to copy to make it a multiple of 8 */ |
| 805 | j=(num/8*8)-tot-8; |
| 806 | memcpy(&(out[tot]),bb,(unsigned int)j); |
| 807 | tot+=j; |
| 808 | memcpy(bb,&(bb[j]),(unsigned int)i-j); |
| 809 | valid=i-j; |
| 810 | break; |
| 811 | } |
| 812 | memcpy(&(out[tot]),bb,(unsigned int)i); |
| 813 | tot+=i; |
| 814 | } |
| 815 | return(tot); |
| 816 | } |
| 817 | |
| 818 | #define ccc2l(c,l) (l =((DES_LONG)(*((c)++)))<<16, \ |
| 819 | l|=((DES_LONG)(*((c)++)))<< 8, \ |
| 820 | l|=((DES_LONG)(*((c)++)))) |
| 821 | |
| 822 | #define l2ccc(l,c) (*((c)++)=(unsigned char)(((l)>>16)&0xff), \ |
| 823 | *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ |
| 824 | *((c)++)=(unsigned char)(((l) )&0xff)) |
| 825 | |
| 826 | |
| 827 | int uuencode(unsigned char *in, int num, unsigned char *out) |
| 828 | { |
| 829 | int j,i,n,tot=0; |
| 830 | DES_LONG l; |
| 831 | register unsigned char *p; |
| 832 | p=out; |
| 833 | |
| 834 | for (j=0; j<num; j+=45) |
| 835 | { |
| 836 | if (j+45 > num) |
| 837 | i=(num-j); |
| 838 | else i=45; |
| 839 | *(p++)=i+' '; |
| 840 | for (n=0; n<i; n+=3) |
| 841 | { |
| 842 | ccc2l(in,l); |
| 843 | *(p++)=((l>>18)&0x3f)+' '; |
| 844 | *(p++)=((l>>12)&0x3f)+' '; |
| 845 | *(p++)=((l>> 6)&0x3f)+' '; |
| 846 | *(p++)=((l )&0x3f)+' '; |
| 847 | tot+=4; |
| 848 | } |
| 849 | *(p++)='\n'; |
| 850 | tot+=2; |
| 851 | } |
| 852 | *p='\0'; |
| 853 | l=0; |
| 854 | return(tot); |
| 855 | } |
| 856 | |
| 857 | int uudecode(unsigned char *in, int num, unsigned char *out) |
| 858 | { |
| 859 | int j,i,k; |
| 860 | unsigned int n=0,space=0; |
| 861 | DES_LONG l; |
| 862 | DES_LONG w,x,y,z; |
| 863 | unsigned int blank=(unsigned int)'\n'-' '; |
| 864 | |
| 865 | for (j=0; j<num; ) |
| 866 | { |
| 867 | n= *(in++)-' '; |
| 868 | if (n == blank) |
| 869 | { |
| 870 | n=0; |
| 871 | in--; |
| 872 | } |
| 873 | if (n > 60) |
| 874 | { |
| 875 | fprintf(stderr,"uuencoded line length too long\n"); |
| 876 | return(-1); |
| 877 | } |
| 878 | j++; |
| 879 | |
| 880 | for (i=0; i<n; j+=4,i+=3) |
| 881 | { |
| 882 | /* the following is for cases where spaces are |
| 883 | * removed from lines. |
| 884 | */ |
| 885 | if (space) |
| 886 | { |
| 887 | w=x=y=z=0; |
| 888 | } |
| 889 | else |
| 890 | { |
| 891 | w= *(in++)-' '; |
| 892 | x= *(in++)-' '; |
| 893 | y= *(in++)-' '; |
| 894 | z= *(in++)-' '; |
| 895 | } |
| 896 | if ((w > 63) || (x > 63) || (y > 63) || (z > 63)) |
| 897 | { |
| 898 | k=0; |
| 899 | if (w == blank) k=1; |
| 900 | if (x == blank) k=2; |
| 901 | if (y == blank) k=3; |
| 902 | if (z == blank) k=4; |
| 903 | space=1; |
| 904 | switch (k) { |
| 905 | case 1: w=0; in--; |
| 906 | case 2: x=0; in--; |
| 907 | case 3: y=0; in--; |
| 908 | case 4: z=0; in--; |
| 909 | break; |
| 910 | case 0: |
| 911 | space=0; |
| 912 | fprintf(stderr,"bad uuencoded data values\n"); |
| 913 | w=x=y=z=0; |
| 914 | return(-1); |
| 915 | break; |
| 916 | } |
| 917 | } |
| 918 | l=(w<<18)|(x<<12)|(y<< 6)|(z ); |
| 919 | l2ccc(l,out); |
| 920 | } |
| 921 | if (*(in++) != '\n') |
| 922 | { |
| 923 | fprintf(stderr,"missing nl in uuencoded line\n"); |
| 924 | w=x=y=z=0; |
| 925 | return(-1); |
| 926 | } |
| 927 | j++; |
| 928 | } |
| 929 | *out='\0'; |
| 930 | w=x=y=z=0; |
| 931 | return(n); |
| 932 | } |