crypto/des/des.c

   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         /*-
 237          * We either
 238          * do checksum or
 239          * do encrypt or
 240          * do decrypt or
 241          * do decrypt then ckecksum or
 242          * do checksum then encrypt
 243          */
 244         if (((eflag+dflag) == 1) || cflag)
 245                 {
 246                 if (eflag) do_encrypt=DES_ENCRYPT;
 247                 if (dflag) do_encrypt=DES_DECRYPT;
 248                 }
 249         else
 250                 {
 251                 if (vflag)
 252                         {
 253 #ifndef _Windows
 254                         fprintf(stderr,"des(1) built with %s\n",libdes_version);
 255 #endif
 256                         EXIT(1);
 257                         }
 258                 else usage();
 259                 }
 260
 261 #ifndef _Windows
 262         if (vflag) fprintf(stderr,"des(1) built with %s\n",libdes_version);
 263 #endif
 264         if (    (in != NULL) &&
 265                 (out != NULL) &&
 266 #ifndef OPENSSL_SYS_MSDOS
 267                 (stat(in,&ins) != -1) &&
 268                 (stat(out,&outs) != -1) &&
 269                 (ins.st_dev == outs.st_dev) &&
 270                 (ins.st_ino == outs.st_ino))
 271 #else /* OPENSSL_SYS_MSDOS */
 272                 (strcmp(in,out) == 0))
 273 #endif
 274                         {
 275                         fputs("input and output file are the same\n",stderr);
 276                         EXIT(3);
 277                         }
 278
 279         if (!kflag)
 280                 if (des_read_pw_string(key,KEYSIZB+1,"Enter key:",eflag?VERIFY:0))
 281                         {
 282                         fputs("password error\n",stderr);
 283                         EXIT(2);
 284                         }
 285
 286         if (in == NULL)
 287                 DES_IN=stdin;
 288         else if ((DES_IN=fopen(in,"r")) == NULL)
 289                 {
 290                 perror("opening input file");
 291                 EXIT(4);
 292                 }
 293
 294         CKSUM_OUT=stdout;
 295         if (out == NULL)
 296                 {
 297                 DES_OUT=stdout;
 298                 CKSUM_OUT=stderr;
 299                 }
 300         else if ((DES_OUT=fopen(out,"w")) == NULL)
 301                 {
 302                 perror("opening output file");
 303                 EXIT(5);
 304                 }
 305
 306 #ifdef OPENSSL_SYS_MSDOS
 307         /* This should set the file to binary mode. */
 308         {
 309 #include <fcntl.h>
 310         if (!(uflag && dflag))
 311                 setmode(fileno(DES_IN),O_BINARY);
 312         if (!(uflag && eflag))
 313                 setmode(fileno(DES_OUT),O_BINARY);
 314         }
 315 #endif
 316
 317         doencryption();
 318         fclose(DES_IN);
 319         fclose(DES_OUT);
 320         EXIT(0);
 321         }
 322
 323 void usage(void)
 324         {
 325         char **u;
 326         static const char *Usage[]={
 327 "des <options> [input-file [output-file]]",
 328 "options:",
 329 "-v         : des(1) version number",
 330 "-e         : encrypt using SunOS compatible user key to DES key conversion.",
 331 "-E         : encrypt ",
 332 "-d         : decrypt using SunOS compatible user key to DES key conversion.",
 333 "-D         : decrypt ",
 334 "-c[ckname] : generate a cbc_cksum using SunOS compatible user key to",
 335 "             DES key conversion and output to ckname (stdout default,",
 336 "             stderr if data being output on stdout).  The checksum is",
 337 "             generated before encryption and after decryption if used",
 338 "             in conjunction with -[eEdD].",
 339 "-C[ckname] : generate a cbc_cksum as for -c but compatible with -[ED].",
 340 "-k key     : use key 'key'",
 341 "-h         : the key that is entered will be a hexadecimal number",
 342 "             that is used directly as the des key",
 343 "-u[uuname] : input file is uudecoded if -[dD] or output uuencoded data if -[eE]",
 344 "             (uuname is the filename to put in the uuencode header).",
 345 "-b         : encrypt using DES in ecb encryption mode, the default is cbc mode.",
 346 "-3         : encrypt using triple DES encryption.  This uses 2 keys",
 347 "             generated from the input key.  If the input key is less",
 348 "             than 8 characters long, this is equivalent to normal",
 349 "             encryption.  Default is triple cbc, -b makes it triple ecb.",
 350 NULL
 351 };
 352         for (u=(char **)Usage; *u; u++)
 353                 {
 354                 fputs(*u,stderr);
 355                 fputc('\n',stderr);
 356                 }
 357
 358         EXIT(1);
 359         }
 360
 361 void doencryption(void)
 362         {
 363 #ifdef _LIBC
 364         extern unsigned long time();
 365 #endif
 366
 367         register int i;
 368         DES_key_schedule ks,ks2;
 369         DES_cblock iv,iv2;
 370         char *p;
 371         int num=0,j,k,l,rem,ll,len,last,ex=0;
 372         DES_cblock kk,k2;
 373         FILE *O;
 374         int Exit=0;
 375 #ifndef OPENSSL_SYS_MSDOS
 376         static unsigned char buf[BUFSIZE+8],obuf[BUFSIZE+8];
 377 #else
 378         static unsigned char *buf=NULL,*obuf=NULL;
 379
 380         if (buf == NULL)
 381                 {
 382                 if (    (( buf=OPENSSL_malloc(BUFSIZE+8)) == NULL) ||
 383                         ((obuf=OPENSSL_malloc(BUFSIZE+8)) == NULL))
 384                         {
 385                         fputs("Not enough memory\n",stderr);
 386                         Exit=10;
 387                         goto problems;
 388                         }
 389                 }
 390 #endif
 391
 392         if (hflag)
 393                 {
 394                 j=(flag3?16:8);
 395                 p=key;
 396                 for (i=0; i<j; i++)
 397                         {
 398                         k=0;
 399                         if ((*p <= '9') && (*p >= '0'))
 400                                 k=(*p-'0')<<4;
 401                         else if ((*p <= 'f') && (*p >= 'a'))
 402                                 k=(*p-'a'+10)<<4;
 403                         else if ((*p <= 'F') && (*p >= 'A'))
 404                                 k=(*p-'A'+10)<<4;
 405                         else
 406                                 {
 407                                 fputs("Bad hex key\n",stderr);
 408                                 Exit=9;
 409                                 goto problems;
 410                                 }
 411                         p++;
 412                         if ((*p <= '9') && (*p >= '0'))
 413                                 k|=(*p-'0');
 414                         else if ((*p <= 'f') && (*p >= 'a'))
 415                                 k|=(*p-'a'+10);
 416                         else if ((*p <= 'F') && (*p >= 'A'))
 417                                 k|=(*p-'A'+10);
 418                         else
 419                                 {
 420                                 fputs("Bad hex key\n",stderr);
 421                                 Exit=9;
 422                                 goto problems;
 423                                 }
 424                         p++;
 425                         if (i < 8)
 426                                 kk[i]=k;
 427                         else
 428                                 k2[i-8]=k;
 429                         }
 430                 DES_set_key_unchecked(&k2,&ks2);
 431                 OPENSSL_cleanse(k2,sizeof(k2));
 432                 }
 433         else if (longk || flag3)
 434                 {
 435                 if (flag3)
 436                         {
 437                         DES_string_to_2keys(key,&kk,&k2);
 438                         DES_set_key_unchecked(&k2,&ks2);
 439                         OPENSSL_cleanse(k2,sizeof(k2));
 440                         }
 441                 else
 442                         DES_string_to_key(key,&kk);
 443                 }
 444         else
 445                 for (i=0; i<KEYSIZ; i++)
 446                         {
 447                         l=0;
 448                         k=key[i];
 449                         for (j=0; j<8; j++)
 450                                 {
 451                                 if (k&1) l++;
 452                                 k>>=1;
 453                                 }
 454                         if (l & 1)
 455                                 kk[i]=key[i]&0x7f;
 456                         else
 457                                 kk[i]=key[i]|0x80;
 458                         }
 459
 460         DES_set_key_unchecked(&kk,&ks);
 461         OPENSSL_cleanse(key,sizeof(key));
 462         OPENSSL_cleanse(kk,sizeof(kk));
 463         /* woops - A bug that does not showup under unix :-( */
 464         memset(iv,0,sizeof(iv));
 465         memset(iv2,0,sizeof(iv2));
 466
 467         l=1;
 468         rem=0;
 469         /* first read */
 470         if (eflag || (!dflag && cflag))
 471                 {
 472                 for (;;)
 473                         {
 474                         num=l=fread(&(buf[rem]),1,BUFSIZE,DES_IN);
 475                         l+=rem;
 476                         num+=rem;
 477                         if (l < 0)
 478                                 {
 479                                 perror("read error");
 480                                 Exit=6;
 481                                 goto problems;
 482                                 }
 483
 484                         rem=l%8;
 485                         len=l-rem;
 486                         if (feof(DES_IN))
 487                                 {
 488                                 for (i=7-rem; i>0; i--)
 489                                         RAND_pseudo_bytes(buf + l++, 1);
 490                                 buf[l++]=rem;
 491                                 ex=1;
 492                                 len+=rem;
 493                                 }
 494                         else
 495                                 l-=rem;
 496
 497                         if (cflag)
 498                                 {
 499                                 DES_cbc_cksum(buf,&cksum,
 500                                         (long)len,&ks,&cksum);
 501                                 if (!eflag)
 502                                         {
 503                                         if (feof(DES_IN)) break;
 504                                         else continue;
 505                                         }
 506                                 }
 507
 508                         if (bflag && !flag3)
 509                                 for (i=0; i<l; i+=8)
 510                                         DES_ecb_encrypt(
 511                                                 (DES_cblock *)&(buf[i]),
 512                                                 (DES_cblock *)&(obuf[i]),
 513                                                 &ks,do_encrypt);
 514                         else if (flag3 && bflag)
 515                                 for (i=0; i<l; i+=8)
 516                                         DES_ecb2_encrypt(
 517                                                 (DES_cblock *)&(buf[i]),
 518                                                 (DES_cblock *)&(obuf[i]),
 519                                                 &ks,&ks2,do_encrypt);
 520                         else if (flag3 && !bflag)
 521                                 {
 522                                 char tmpbuf[8];
 523
 524                                 if (rem) memcpy(tmpbuf,&(buf[l]),
 525                                         (unsigned int)rem);
 526                                 DES_3cbc_encrypt(
 527                                         (DES_cblock *)buf,(DES_cblock *)obuf,
 528                                         (long)l,ks,ks2,&iv,
 529                                         &iv2,do_encrypt);
 530                                 if (rem) memcpy(&(buf[l]),tmpbuf,
 531                                         (unsigned int)rem);
 532                                 }
 533                         else
 534                                 {
 535                                 DES_cbc_encrypt(
 536                                         buf,obuf,
 537                                         (long)l,&ks,&iv,do_encrypt);
 538                                 if (l >= 8) memcpy(iv,&(obuf[l-8]),8);
 539                                 }
 540                         if (rem) memcpy(buf,&(buf[l]),(unsigned int)rem);
 541
 542                         i=0;
 543                         while (i < l)
 544                                 {
 545                                 if (uflag)
 546                                         j=uufwrite(obuf,1,(unsigned int)l-i,
 547                                                 DES_OUT);
 548                                 else
 549                                         j=fwrite(obuf,1,(unsigned int)l-i,
 550                                                 DES_OUT);
 551                                 if (j == -1)
 552                                         {
 553                                         perror("Write error");
 554                                         Exit=7;
 555                                         goto problems;
 556                                         }
 557                                 i+=j;
 558                                 }
 559                         if (feof(DES_IN))
 560                                 {
 561                                 if (uflag) uufwriteEnd(DES_OUT);
 562                                 break;
 563                                 }
 564                         }
 565                 }
 566         else /* decrypt */
 567                 {
 568                 ex=1;
 569                 for (;;)
 570                         {
 571                         if (ex) {
 572                                 if (uflag)
 573                                         l=uufread(buf,1,BUFSIZE,DES_IN);
 574                                 else
 575                                         l=fread(buf,1,BUFSIZE,DES_IN);
 576                                 ex=0;
 577                                 rem=l%8;
 578                                 l-=rem;
 579                                 }
 580                         if (l < 0)
 581                                 {
 582                                 perror("read error");
 583                                 Exit=6;
 584                                 goto problems;
 585                                 }
 586
 587                         if (bflag && !flag3)
 588                                 for (i=0; i<l; i+=8)
 589                                         DES_ecb_encrypt(
 590                                                 (DES_cblock *)&(buf[i]),
 591                                                 (DES_cblock *)&(obuf[i]),
 592                                                 &ks,do_encrypt);
 593                         else if (flag3 && bflag)
 594                                 for (i=0; i<l; i+=8)
 595                                         DES_ecb2_encrypt(
 596                                                 (DES_cblock *)&(buf[i]),
 597                                                 (DES_cblock *)&(obuf[i]),
 598                                                 &ks,&ks2,do_encrypt);
 599                         else if (flag3 && !bflag)
 600                                 {
 601                                 DES_3cbc_encrypt(
 602                                         (DES_cblock *)buf,(DES_cblock *)obuf,
 603                                         (long)l,ks,ks2,&iv,
 604                                         &iv2,do_encrypt);
 605                                 }
 606                         else
 607                                 {
 608                                 DES_cbc_encrypt(
 609                                         buf,obuf,
 610                                         (long)l,&ks,&iv,do_encrypt);
 611                                 if (l >= 8) memcpy(iv,&(buf[l-8]),8);
 612                                 }
 613
 614                         if (uflag)
 615                                 ll=uufread(&(buf[rem]),1,BUFSIZE,DES_IN);
 616                         else
 617                                 ll=fread(&(buf[rem]),1,BUFSIZE,DES_IN);
 618                         ll+=rem;
 619                         rem=ll%8;
 620                         ll-=rem;
 621                         if (feof(DES_IN) && (ll == 0))
 622                                 {
 623                                 last=obuf[l-1];
 624
 625                                 if ((last > 7) || (last < 0))
 626                                         {
 627                                         fputs("The file was not decrypted correctly.\n",
 628                                                 stderr);
 629                                         Exit=8;
 630                                         last=0;
 631                                         }
 632                                 l=l-8+last;
 633                                 }
 634                         i=0;
 635                         if (cflag) DES_cbc_cksum(obuf,
 636                                 (DES_cblock *)cksum,(long)l/8*8,&ks,
 637                                 (DES_cblock *)cksum);
 638                         while (i != l)
 639                                 {
 640                                 j=fwrite(obuf,1,(unsigned int)l-i,DES_OUT);
 641                                 if (j == -1)
 642                                         {
 643                                         perror("Write error");
 644                                         Exit=7;
 645                                         goto problems;
 646                                         }
 647                                 i+=j;
 648                                 }
 649                         l=ll;
 650                         if ((l == 0) && feof(DES_IN)) break;
 651                         }
 652                 }
 653         if (cflag)
 654                 {
 655                 l=0;
 656                 if (cksumname[0] != '\0')
 657                         {
 658                         if ((O=fopen(cksumname,"w")) != NULL)
 659                                 {
 660                                 CKSUM_OUT=O;
 661                                 l=1;
 662                                 }
 663                         }
 664                 for (i=0; i<8; i++)
 665                         fprintf(CKSUM_OUT,"%02X",cksum[i]);
 666                 fprintf(CKSUM_OUT,"\n");
 667                 if (l) fclose(CKSUM_OUT);
 668                 }
 669 problems:
 670         OPENSSL_cleanse(buf,sizeof(buf));
 671         OPENSSL_cleanse(obuf,sizeof(obuf));
 672         OPENSSL_cleanse(&ks,sizeof(ks));
 673         OPENSSL_cleanse(&ks2,sizeof(ks2));
 674         OPENSSL_cleanse(iv,sizeof(iv));
 675         OPENSSL_cleanse(iv2,sizeof(iv2));
 676         OPENSSL_cleanse(kk,sizeof(kk));
 677         OPENSSL_cleanse(k2,sizeof(k2));
 678         OPENSSL_cleanse(uubuf,sizeof(uubuf));
 679         OPENSSL_cleanse(b,sizeof(b));
 680         OPENSSL_cleanse(bb,sizeof(bb));
 681         OPENSSL_cleanse(cksum,sizeof(cksum));
 682         if (Exit) EXIT(Exit);
 683         }
 684
 685 /*    We ignore this parameter but it should be > ~50 I believe    */
 686 int uufwrite(unsigned char *data, int size, unsigned int num, FILE *fp)
 687         {
 688         int i,j,left,rem,ret=num;
 689         static int start=1;
 690
 691         if (start)
 692                 {
 693                 fprintf(fp,"begin 600 %s\n",
 694                         (uuname[0] == '\0')?"text.d":uuname);
 695                 start=0;
 696                 }
 697
 698         if (uubufnum)
 699                 {
 700                 if (uubufnum+num < 45)
 701                         {
 702                         memcpy(&(uubuf[uubufnum]),data,(unsigned int)num);
 703                         uubufnum+=num;
 704                         return(num);
 705                         }
 706                 else
 707                         {
 708                         i=45-uubufnum;
 709                         memcpy(&(uubuf[uubufnum]),data,(unsigned int)i);
 710                         j=uuencode((unsigned char *)uubuf,45,b);
 711                         fwrite(b,1,(unsigned int)j,fp);
 712                         uubufnum=0;
 713                         data+=i;
 714                         num-=i;
 715                         }
 716                 }
 717
 718         for (i=0; i<(((int)num)-INUUBUFN); i+=INUUBUFN)
 719                 {
 720                 j=uuencode(&(data[i]),INUUBUFN,b);
 721                 fwrite(b,1,(unsigned int)j,fp);
 722                 }
 723         rem=(num-i)%45;
 724         left=(num-i-rem);
 725         if (left)
 726                 {
 727                 j=uuencode(&(data[i]),left,b);
 728                 fwrite(b,1,(unsigned int)j,fp);
 729                 i+=left;
 730                 }
 731         if (i != num)
 732                 {
 733                 memcpy(uubuf,&(data[i]),(unsigned int)rem);
 734                 uubufnum=rem;
 735                 }
 736         return(ret);
 737         }
 738
 739 void uufwriteEnd(FILE *fp)
 740         {
 741         int j;
 742         static const char *end=" \nend\n";
 743
 744         if (uubufnum != 0)
 745                 {
 746                 uubuf[uubufnum]='\0';
 747                 uubuf[uubufnum+1]='\0';
 748                 uubuf[uubufnum+2]='\0';
 749                 j=uuencode(uubuf,uubufnum,b);
 750                 fwrite(b,1,(unsigned int)j,fp);
 751                 }
 752         fwrite(end,1,strlen(end),fp);
 753         }
 754
 755 /* int size:  should always be > ~ 60; I actually ignore this parameter :-)    */
 756 int uufread(unsigned char *out, int size, unsigned int num, FILE *fp)
 757         {
 758         int i,j,tot;
 759         static int done=0;
 760         static int valid=0;
 761         static int start=1;
 762
 763         if (start)
 764                 {
 765                 for (;;)
 766                         {
 767                         b[0]='\0';
 768                         fgets((char *)b,300,fp);
 769                         if (b[0] == '\0')
 770                                 {
 771                                 fprintf(stderr,"no 'begin' found in uuencoded input\n");
 772                                 return(-1);
 773                                 }
 774                         if (strncmp((char *)b,"begin ",6) == 0) break;
 775                         }
 776                 start=0;
 777                 }
 778         if (done) return(0);
 779         tot=0;
 780         if (valid)
 781                 {
 782                 memcpy(out,bb,(unsigned int)valid);
 783                 tot=valid;
 784                 valid=0;
 785                 }
 786         for (;;)
 787                 {
 788                 b[0]='\0';
 789                 fgets((char *)b,300,fp);
 790                 if (b[0] == '\0') break;
 791                 i=strlen((char *)b);
 792                 if ((b[0] == 'e') && (b[1] == 'n') && (b[2] == 'd'))
 793                         {
 794                         done=1;
 795                         while (!feof(fp))
 796                                 {
 797                                 fgets((char *)b,300,fp);
 798                                 }
 799                         break;
 800                         }
 801                 i=uudecode(b,i,bb);
 802                 if (i < 0) break;
 803                 if ((i+tot+8) > num)
 804                         {
 805                         /* num to copy to make it a multiple of 8 */
 806                         j=(num/8*8)-tot-8;
 807                         memcpy(&(out[tot]),bb,(unsigned int)j);
 808                         tot+=j;
 809                         memcpy(bb,&(bb[j]),(unsigned int)i-j);
 810                         valid=i-j;
 811                         break;
 812                         }
 813                 memcpy(&(out[tot]),bb,(unsigned int)i);
 814                 tot+=i;
 815                 }
 816         return(tot);
 817         }
 818
 819 #define ccc2l(c,l)      (l =((DES_LONG)(*((c)++)))<<16, \
 820                          l|=((DES_LONG)(*((c)++)))<< 8, \
 821                          l|=((DES_LONG)(*((c)++))))
 822
 823 #define l2ccc(l,c)      (*((c)++)=(unsigned char)(((l)>>16)&0xff), \
 824                     *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
 825                     *((c)++)=(unsigned char)(((l)    )&0xff))
 826
 827
 828 int uuencode(unsigned char *in, int num, unsigned char *out)
 829         {
 830         int j,i,n,tot=0;
 831         DES_LONG l;
 832         register unsigned char *p;
 833         p=out;
 834
 835         for (j=0; j<num; j+=45)
 836                 {
 837                 if (j+45 > num)
 838                         i=(num-j);
 839                 else    i=45;
 840                 *(p++)=i+' ';
 841                 for (n=0; n<i; n+=3)
 842                         {
 843                         ccc2l(in,l);
 844                         *(p++)=((l>>18)&0x3f)+' ';
 845                         *(p++)=((l>>12)&0x3f)+' ';
 846                         *(p++)=((l>> 6)&0x3f)+' ';
 847                         *(p++)=((l    )&0x3f)+' ';
 848                         tot+=4;
 849                         }
 850                 *(p++)='\n';
 851                 tot+=2;
 852                 }
 853         *p='\0';
 854         l=0;
 855         return(tot);
 856         }
 857
 858 int uudecode(unsigned char *in, int num, unsigned char *out)
 859         {
 860         int j,i,k;
 861         unsigned int n=0,space=0;
 862         DES_LONG l;
 863         DES_LONG w,x,y,z;
 864         unsigned int blank=(unsigned int)'\n'-' ';
 865
 866         for (j=0; j<num; )
 867                 {
 868                 n= *(in++)-' ';
 869                 if (n == blank)
 870                         {
 871                         n=0;
 872                         in--;
 873                         }
 874                 if (n > 60)
 875                         {
 876                         fprintf(stderr,"uuencoded line length too long\n");
 877                         return(-1);
 878                         }
 879                 j++;
 880
 881                 for (i=0; i<n; j+=4,i+=3)
 882                         {
 883                         /* the following is for cases where spaces are
 884                          * removed from lines.
 885                          */
 886                         if (space)
 887                                 {
 888                                 w=x=y=z=0;
 889                                 }
 890                         else
 891                                 {
 892                                 w= *(in++)-' ';
 893                                 x= *(in++)-' ';
 894                                 y= *(in++)-' ';
 895                                 z= *(in++)-' ';
 896                                 }
 897                         if ((w > 63) || (x > 63) || (y > 63) || (z > 63))
 898                                 {
 899                                 k=0;
 900                                 if (w == blank) k=1;
 901                                 if (x == blank) k=2;
 902                                 if (y == blank) k=3;
 903                                 if (z == blank) k=4;
 904                                 space=1;
 905                                 switch (k) {
 906                                 case 1: w=0; in--;
 907                                 case 2: x=0; in--;
 908                                 case 3: y=0; in--;
 909                                 case 4: z=0; in--;
 910                                         break;
 911                                 case 0:
 912                                         space=0;
 913                                         fprintf(stderr,"bad uuencoded data values\n");
 914                                         w=x=y=z=0;
 915                                         return(-1);
 916                                         break;
 917                                         }
 918                                 }
 919                         l=(w<<18)|(x<<12)|(y<< 6)|(z    );
 920                         l2ccc(l,out);
 921                         }
 922                 if (*(in++) != '\n')
 923                         {
 924                         fprintf(stderr,"missing nl in uuencoded line\n");
 925                         w=x=y=z=0;
 926                         return(-1);
 927                         }
 928                 j++;
 929                 }
 930         *out='\0';
 931         w=x=y=z=0;
 932         return(n);
 933         }