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         /* 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         }