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d02b48c6 | 1 | /* crypto/des/des.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
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 | #ifndef MSDOS | |
62 | #include <unistd.h> | |
63 | #else | |
64 | #include <io.h> | |
65 | #define RAND | |
66 | #endif | |
67 | ||
68 | #include <time.h> | |
69 | #include "des_ver.h" | |
70 | ||
71 | #ifdef VMS | |
72 | #include <types.h> | |
73 | #include <stat.h> | |
74 | #else | |
75 | #ifndef _IRIX | |
76 | #include <sys/types.h> | |
77 | #endif | |
78 | #include <sys/stat.h> | |
79 | #endif | |
80 | #if defined(NOCONST) | |
81 | #define const | |
82 | #endif | |
83 | #include "des.h" | |
84 | ||
85 | #if defined(__STDC__) || defined(VMS) || defined(M_XENIX) || defined(MSDOS) | |
86 | #include <string.h> | |
87 | #endif | |
88 | ||
89 | #ifdef RAND | |
90 | #define random rand | |
91 | #define srandom(s) srand(s) | |
92 | #endif | |
93 | ||
94 | #ifndef NOPROTO | |
95 | void usage(void); | |
96 | void doencryption(void); | |
97 | int uufwrite(unsigned char *data, int size, unsigned int num, FILE *fp); | |
98 | void uufwriteEnd(FILE *fp); | |
99 | int uufread(unsigned char *out,int size,unsigned int num,FILE *fp); | |
100 | int uuencode(unsigned char *in,int num,unsigned char *out); | |
101 | int uudecode(unsigned char *in,int num,unsigned char *out); | |
58964a49 RE |
102 | void des_3cbc_encrypt(des_cblock *input,des_cblock *output,long length, |
103 | des_key_schedule sk1,des_key_schedule sk2, | |
104 | des_cblock *ivec1,des_cblock *ivec2,int enc); | |
d02b48c6 RE |
105 | #else |
106 | void usage(); | |
107 | void doencryption(); | |
108 | int uufwrite(); | |
109 | void uufwriteEnd(); | |
110 | int uufread(); | |
111 | int uuencode(); | |
112 | int uudecode(); | |
58964a49 | 113 | void des_3cbc_encrypt(); |
d02b48c6 RE |
114 | #endif |
115 | ||
116 | #ifdef VMS | |
58964a49 | 117 | #define EXIT(a) exit(a&0x10000000L) |
d02b48c6 RE |
118 | #else |
119 | #define EXIT(a) exit(a) | |
120 | #endif | |
121 | ||
122 | #define BUFSIZE (8*1024) | |
123 | #define VERIFY 1 | |
124 | #define KEYSIZ 8 | |
125 | #define KEYSIZB 1024 /* should hit tty line limit first :-) */ | |
126 | char key[KEYSIZB+1]; | |
127 | int do_encrypt,longk=0; | |
128 | FILE *DES_IN,*DES_OUT,*CKSUM_OUT; | |
129 | char uuname[200]; | |
130 | unsigned char uubuf[50]; | |
131 | int uubufnum=0; | |
132 | #define INUUBUFN (45*100) | |
133 | #define OUTUUBUF (65*100) | |
134 | unsigned char b[OUTUUBUF]; | |
135 | unsigned char bb[300]; | |
136 | des_cblock cksum={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; | |
137 | char cksumname[200]=""; | |
138 | ||
139 | int vflag,cflag,eflag,dflag,kflag,bflag,fflag,sflag,uflag,flag3,hflag,error; | |
140 | ||
141 | int main(argc, argv) | |
142 | int argc; | |
143 | char **argv; | |
144 | { | |
145 | int i; | |
146 | struct stat ins,outs; | |
147 | char *p; | |
148 | char *in=NULL,*out=NULL; | |
149 | ||
150 | vflag=cflag=eflag=dflag=kflag=hflag=bflag=fflag=sflag=uflag=flag3=0; | |
151 | error=0; | |
152 | memset(key,0,sizeof(key)); | |
153 | ||
154 | for (i=1; i<argc; i++) | |
155 | { | |
156 | p=argv[i]; | |
157 | if ((p[0] == '-') && (p[1] != '\0')) | |
158 | { | |
159 | p++; | |
160 | while (*p) | |
161 | { | |
162 | switch (*(p++)) | |
163 | { | |
164 | case '3': | |
165 | flag3=1; | |
166 | longk=1; | |
167 | break; | |
168 | case 'c': | |
169 | cflag=1; | |
170 | strncpy(cksumname,p,200); | |
171 | p+=strlen(cksumname); | |
172 | break; | |
173 | case 'C': | |
174 | cflag=1; | |
175 | longk=1; | |
176 | strncpy(cksumname,p,200); | |
177 | p+=strlen(cksumname); | |
178 | break; | |
179 | case 'e': | |
180 | eflag=1; | |
181 | break; | |
182 | case 'v': | |
183 | vflag=1; | |
184 | break; | |
185 | case 'E': | |
186 | eflag=1; | |
187 | longk=1; | |
188 | break; | |
189 | case 'd': | |
190 | dflag=1; | |
191 | break; | |
192 | case 'D': | |
193 | dflag=1; | |
194 | longk=1; | |
195 | break; | |
196 | case 'b': | |
197 | bflag=1; | |
198 | break; | |
199 | case 'f': | |
200 | fflag=1; | |
201 | break; | |
202 | case 's': | |
203 | sflag=1; | |
204 | break; | |
205 | case 'u': | |
206 | uflag=1; | |
207 | strncpy(uuname,p,200); | |
208 | p+=strlen(uuname); | |
209 | break; | |
210 | case 'h': | |
211 | hflag=1; | |
212 | break; | |
213 | case 'k': | |
214 | kflag=1; | |
215 | if ((i+1) == argc) | |
216 | { | |
217 | fputs("must have a key with the -k option\n",stderr); | |
218 | error=1; | |
219 | } | |
220 | else | |
221 | { | |
222 | int j; | |
223 | ||
224 | i++; | |
225 | strncpy(key,argv[i],KEYSIZB); | |
226 | for (j=strlen(argv[i])-1; j>=0; j--) | |
227 | argv[i][j]='\0'; | |
228 | } | |
229 | break; | |
230 | default: | |
231 | fprintf(stderr,"'%c' unknown flag\n",p[-1]); | |
232 | error=1; | |
233 | break; | |
234 | } | |
235 | } | |
236 | } | |
237 | else | |
238 | { | |
239 | if (in == NULL) | |
240 | in=argv[i]; | |
241 | else if (out == NULL) | |
242 | out=argv[i]; | |
243 | else | |
244 | error=1; | |
245 | } | |
246 | } | |
247 | if (error) usage(); | |
248 | /* We either | |
249 | * do checksum or | |
250 | * do encrypt or | |
251 | * do decrypt or | |
252 | * do decrypt then ckecksum or | |
253 | * do checksum then encrypt | |
254 | */ | |
255 | if (((eflag+dflag) == 1) || cflag) | |
256 | { | |
257 | if (eflag) do_encrypt=DES_ENCRYPT; | |
258 | if (dflag) do_encrypt=DES_DECRYPT; | |
259 | } | |
260 | else | |
261 | { | |
262 | if (vflag) | |
263 | { | |
264 | #ifndef _Windows | |
265 | fprintf(stderr,"des(1) built with %s\n",libdes_version); | |
266 | #endif | |
267 | EXIT(1); | |
268 | } | |
269 | else usage(); | |
270 | } | |
271 | ||
272 | #ifndef _Windows | |
273 | if (vflag) fprintf(stderr,"des(1) built with %s\n",libdes_version); | |
274 | #endif | |
275 | if ( (in != NULL) && | |
276 | (out != NULL) && | |
277 | #ifndef MSDOS | |
278 | (stat(in,&ins) != -1) && | |
279 | (stat(out,&outs) != -1) && | |
280 | (ins.st_dev == outs.st_dev) && | |
281 | (ins.st_ino == outs.st_ino)) | |
282 | #else /* MSDOS */ | |
283 | (strcmp(in,out) == 0)) | |
284 | #endif | |
285 | { | |
286 | fputs("input and output file are the same\n",stderr); | |
287 | EXIT(3); | |
288 | } | |
289 | ||
290 | if (!kflag) | |
291 | if (des_read_pw_string(key,KEYSIZB+1,"Enter key:",eflag?VERIFY:0)) | |
292 | { | |
293 | fputs("password error\n",stderr); | |
294 | EXIT(2); | |
295 | } | |
296 | ||
297 | if (in == NULL) | |
298 | DES_IN=stdin; | |
299 | else if ((DES_IN=fopen(in,"r")) == NULL) | |
300 | { | |
301 | perror("opening input file"); | |
302 | EXIT(4); | |
303 | } | |
304 | ||
305 | CKSUM_OUT=stdout; | |
306 | if (out == NULL) | |
307 | { | |
308 | DES_OUT=stdout; | |
309 | CKSUM_OUT=stderr; | |
310 | } | |
311 | else if ((DES_OUT=fopen(out,"w")) == NULL) | |
312 | { | |
313 | perror("opening output file"); | |
314 | EXIT(5); | |
315 | } | |
316 | ||
317 | #ifdef MSDOS | |
318 | /* This should set the file to binary mode. */ | |
319 | { | |
320 | #include <fcntl.h> | |
321 | if (!(uflag && dflag)) | |
322 | setmode(fileno(DES_IN),O_BINARY); | |
323 | if (!(uflag && eflag)) | |
324 | setmode(fileno(DES_OUT),O_BINARY); | |
325 | } | |
326 | #endif | |
327 | ||
328 | doencryption(); | |
329 | fclose(DES_IN); | |
330 | fclose(DES_OUT); | |
331 | EXIT(0); | |
332 | } | |
333 | ||
334 | void usage() | |
335 | { | |
336 | char **u; | |
337 | static const char *Usage[]={ | |
338 | "des <options> [input-file [output-file]]", | |
339 | "options:", | |
340 | "-v : des(1) version number", | |
341 | "-e : encrypt using sunOS compatible user key to DES key conversion.", | |
342 | "-E : encrypt ", | |
343 | "-d : decrypt using sunOS compatible user key to DES key conversion.", | |
344 | "-D : decrypt ", | |
345 | "-c[ckname] : generate a cbc_cksum using sunOS compatible user key to", | |
346 | " DES key conversion and output to ckname (stdout default,", | |
347 | " stderr if data being output on stdout). The checksum is", | |
348 | " generated before encryption and after decryption if used", | |
349 | " in conjunction with -[eEdD].", | |
350 | "-C[ckname] : generate a cbc_cksum as for -c but compatible with -[ED].", | |
351 | "-k key : use key 'key'", | |
352 | "-h : the key that is entered will be a hexidecimal number", | |
353 | " that is used directly as the des key", | |
354 | "-u[uuname] : input file is uudecoded if -[dD] or output uuencoded data if -[eE]", | |
355 | " (uuname is the filename to put in the uuencode header).", | |
356 | "-b : encrypt using DES in ecb encryption mode, the defaut is cbc mode.", | |
357 | "-3 : encrypt using tripple DES encryption. This uses 2 keys", | |
358 | " generated from the input key. If the input key is less", | |
359 | " than 8 characters long, this is equivelent to normal", | |
360 | " encryption. Default is tripple cbc, -b makes it tripple ecb.", | |
361 | NULL | |
362 | }; | |
363 | for (u=(char **)Usage; *u; u++) | |
364 | { | |
365 | fputs(*u,stderr); | |
366 | fputc('\n',stderr); | |
367 | } | |
368 | ||
369 | EXIT(1); | |
370 | } | |
371 | ||
372 | void doencryption() | |
373 | { | |
374 | #ifdef _LIBC | |
375 | extern int srandom(); | |
376 | extern int random(); | |
377 | extern unsigned long time(); | |
378 | #endif | |
379 | ||
380 | register int i; | |
381 | des_key_schedule ks,ks2; | |
382 | unsigned char iv[8],iv2[8]; | |
383 | char *p; | |
384 | int num=0,j,k,l,rem,ll,len,last,ex=0; | |
385 | des_cblock kk,k2; | |
386 | FILE *O; | |
387 | int Exit=0; | |
388 | #ifndef MSDOS | |
389 | static unsigned char buf[BUFSIZE+8],obuf[BUFSIZE+8]; | |
390 | #else | |
391 | static unsigned char *buf=NULL,*obuf=NULL; | |
392 | ||
393 | if (buf == NULL) | |
394 | { | |
395 | if ( (( buf=(unsigned char *)Malloc(BUFSIZE+8)) == NULL) || | |
396 | ((obuf=(unsigned char *)Malloc(BUFSIZE+8)) == NULL)) | |
397 | { | |
398 | fputs("Not enough memory\n",stderr); | |
399 | Exit=10; | |
400 | goto problems; | |
401 | } | |
402 | } | |
403 | #endif | |
404 | ||
405 | if (hflag) | |
406 | { | |
407 | j=(flag3?16:8); | |
408 | p=key; | |
409 | for (i=0; i<j; i++) | |
410 | { | |
411 | k=0; | |
412 | if ((*p <= '9') && (*p >= '0')) | |
413 | k=(*p-'0')<<4; | |
414 | else if ((*p <= 'f') && (*p >= 'a')) | |
415 | k=(*p-'a'+10)<<4; | |
416 | else if ((*p <= 'F') && (*p >= 'A')) | |
417 | k=(*p-'A'+10)<<4; | |
418 | else | |
419 | { | |
420 | fputs("Bad hex key\n",stderr); | |
421 | Exit=9; | |
422 | goto problems; | |
423 | } | |
424 | p++; | |
425 | if ((*p <= '9') && (*p >= '0')) | |
426 | k|=(*p-'0'); | |
427 | else if ((*p <= 'f') && (*p >= 'a')) | |
428 | k|=(*p-'a'+10); | |
429 | else if ((*p <= 'F') && (*p >= 'A')) | |
430 | k|=(*p-'A'+10); | |
431 | else | |
432 | { | |
433 | fputs("Bad hex key\n",stderr); | |
434 | Exit=9; | |
435 | goto problems; | |
436 | } | |
437 | p++; | |
438 | if (i < 8) | |
439 | kk[i]=k; | |
440 | else | |
441 | k2[i-8]=k; | |
442 | } | |
443 | des_set_key((C_Block *)k2,ks2); | |
444 | memset(k2,0,sizeof(k2)); | |
445 | } | |
446 | else if (longk || flag3) | |
447 | { | |
448 | if (flag3) | |
449 | { | |
450 | des_string_to_2keys(key,(C_Block *)kk,(C_Block *)k2); | |
451 | des_set_key((C_Block *)k2,ks2); | |
452 | memset(k2,0,sizeof(k2)); | |
453 | } | |
454 | else | |
455 | des_string_to_key(key,(C_Block *)kk); | |
456 | } | |
457 | else | |
458 | for (i=0; i<KEYSIZ; i++) | |
459 | { | |
460 | l=0; | |
461 | k=key[i]; | |
462 | for (j=0; j<8; j++) | |
463 | { | |
464 | if (k&1) l++; | |
465 | k>>=1; | |
466 | } | |
467 | if (l & 1) | |
468 | kk[i]=key[i]&0x7f; | |
469 | else | |
470 | kk[i]=key[i]|0x80; | |
471 | } | |
472 | ||
473 | des_set_key((C_Block *)kk,ks); | |
474 | memset(key,0,sizeof(key)); | |
475 | memset(kk,0,sizeof(kk)); | |
476 | /* woops - A bug that does not showup under unix :-( */ | |
477 | memset(iv,0,sizeof(iv)); | |
478 | memset(iv2,0,sizeof(iv2)); | |
479 | ||
480 | l=1; | |
481 | rem=0; | |
482 | /* first read */ | |
483 | if (eflag || (!dflag && cflag)) | |
484 | { | |
485 | for (;;) | |
486 | { | |
487 | num=l=fread(&(buf[rem]),1,BUFSIZE,DES_IN); | |
488 | l+=rem; | |
489 | num+=rem; | |
490 | if (l < 0) | |
491 | { | |
492 | perror("read error"); | |
493 | Exit=6; | |
494 | goto problems; | |
495 | } | |
496 | ||
497 | rem=l%8; | |
498 | len=l-rem; | |
499 | if (feof(DES_IN)) | |
500 | { | |
501 | srandom((unsigned int)time(NULL)); | |
502 | for (i=7-rem; i>0; i--) | |
503 | buf[l++]=random()&0xff; | |
504 | buf[l++]=rem; | |
505 | ex=1; | |
506 | len+=rem; | |
507 | } | |
508 | else | |
509 | l-=rem; | |
510 | ||
511 | if (cflag) | |
512 | { | |
513 | des_cbc_cksum((C_Block *)buf,(C_Block *)cksum, | |
514 | (long)len,ks,(C_Block *)cksum); | |
515 | if (!eflag) | |
516 | { | |
517 | if (feof(DES_IN)) break; | |
518 | else continue; | |
519 | } | |
520 | } | |
521 | ||
522 | if (bflag && !flag3) | |
523 | for (i=0; i<l; i+=8) | |
524 | des_ecb_encrypt( | |
525 | (des_cblock *)&(buf[i]), | |
526 | (des_cblock *)&(obuf[i]), | |
527 | ks,do_encrypt); | |
528 | else if (flag3 && bflag) | |
529 | for (i=0; i<l; i+=8) | |
530 | des_ecb2_encrypt( | |
531 | (des_cblock *)&(buf[i]), | |
532 | (des_cblock *)&(obuf[i]), | |
533 | ks,ks2,do_encrypt); | |
534 | else if (flag3 && !bflag) | |
535 | { | |
536 | char tmpbuf[8]; | |
537 | ||
538 | if (rem) memcpy(tmpbuf,&(buf[l]), | |
539 | (unsigned int)rem); | |
540 | des_3cbc_encrypt( | |
541 | (des_cblock *)buf,(des_cblock *)obuf, | |
542 | (long)l,ks,ks2,(des_cblock *)iv, | |
543 | (des_cblock *)iv2,do_encrypt); | |
544 | if (rem) memcpy(&(buf[l]),tmpbuf, | |
545 | (unsigned int)rem); | |
546 | } | |
547 | else | |
548 | { | |
549 | des_cbc_encrypt( | |
550 | (des_cblock *)buf,(des_cblock *)obuf, | |
551 | (long)l,ks,(des_cblock *)iv,do_encrypt); | |
552 | if (l >= 8) memcpy(iv,&(obuf[l-8]),8); | |
553 | } | |
554 | if (rem) memcpy(buf,&(buf[l]),(unsigned int)rem); | |
555 | ||
556 | i=0; | |
557 | while (i < l) | |
558 | { | |
559 | if (uflag) | |
560 | j=uufwrite(obuf,1,(unsigned int)l-i, | |
561 | DES_OUT); | |
562 | else | |
563 | j=fwrite(obuf,1,(unsigned int)l-i, | |
564 | DES_OUT); | |
565 | if (j == -1) | |
566 | { | |
567 | perror("Write error"); | |
568 | Exit=7; | |
569 | goto problems; | |
570 | } | |
571 | i+=j; | |
572 | } | |
573 | if (feof(DES_IN)) | |
574 | { | |
575 | if (uflag) uufwriteEnd(DES_OUT); | |
576 | break; | |
577 | } | |
578 | } | |
579 | } | |
580 | else /* decrypt */ | |
581 | { | |
582 | ex=1; | |
583 | for (;;) | |
584 | { | |
585 | if (ex) { | |
586 | if (uflag) | |
587 | l=uufread(buf,1,BUFSIZE,DES_IN); | |
588 | else | |
589 | l=fread(buf,1,BUFSIZE,DES_IN); | |
590 | ex=0; | |
591 | rem=l%8; | |
592 | l-=rem; | |
593 | } | |
594 | if (l < 0) | |
595 | { | |
596 | perror("read error"); | |
597 | Exit=6; | |
598 | goto problems; | |
599 | } | |
600 | ||
601 | if (bflag && !flag3) | |
602 | for (i=0; i<l; i+=8) | |
603 | des_ecb_encrypt( | |
604 | (des_cblock *)&(buf[i]), | |
605 | (des_cblock *)&(obuf[i]), | |
606 | ks,do_encrypt); | |
607 | else if (flag3 && bflag) | |
608 | for (i=0; i<l; i+=8) | |
609 | des_ecb2_encrypt( | |
610 | (des_cblock *)&(buf[i]), | |
611 | (des_cblock *)&(obuf[i]), | |
612 | ks,ks2,do_encrypt); | |
613 | else if (flag3 && !bflag) | |
614 | { | |
615 | des_3cbc_encrypt( | |
616 | (des_cblock *)buf,(des_cblock *)obuf, | |
617 | (long)l,ks,ks2,(des_cblock *)iv, | |
618 | (des_cblock *)iv2,do_encrypt); | |
619 | } | |
620 | else | |
621 | { | |
622 | des_cbc_encrypt( | |
623 | (des_cblock *)buf,(des_cblock *)obuf, | |
624 | (long)l,ks,(des_cblock *)iv,do_encrypt); | |
625 | if (l >= 8) memcpy(iv,&(buf[l-8]),8); | |
626 | } | |
627 | ||
628 | if (uflag) | |
629 | ll=uufread(&(buf[rem]),1,BUFSIZE,DES_IN); | |
630 | else | |
631 | ll=fread(&(buf[rem]),1,BUFSIZE,DES_IN); | |
632 | ll+=rem; | |
633 | rem=ll%8; | |
634 | ll-=rem; | |
635 | if (feof(DES_IN) && (ll == 0)) | |
636 | { | |
637 | last=obuf[l-1]; | |
638 | ||
639 | if ((last > 7) || (last < 0)) | |
640 | { | |
641 | fputs("The file was not decrypted correctly.\n", | |
642 | stderr); | |
643 | Exit=8; | |
644 | last=0; | |
645 | } | |
646 | l=l-8+last; | |
647 | } | |
648 | i=0; | |
649 | if (cflag) des_cbc_cksum((C_Block *)obuf, | |
650 | (C_Block *)cksum,(long)l/8*8,ks, | |
651 | (C_Block *)cksum); | |
652 | while (i != l) | |
653 | { | |
654 | j=fwrite(obuf,1,(unsigned int)l-i,DES_OUT); | |
655 | if (j == -1) | |
656 | { | |
657 | perror("Write error"); | |
658 | Exit=7; | |
659 | goto problems; | |
660 | } | |
661 | i+=j; | |
662 | } | |
663 | l=ll; | |
664 | if ((l == 0) && feof(DES_IN)) break; | |
665 | } | |
666 | } | |
667 | if (cflag) | |
668 | { | |
669 | l=0; | |
670 | if (cksumname[0] != '\0') | |
671 | { | |
672 | if ((O=fopen(cksumname,"w")) != NULL) | |
673 | { | |
674 | CKSUM_OUT=O; | |
675 | l=1; | |
676 | } | |
677 | } | |
678 | for (i=0; i<8; i++) | |
679 | fprintf(CKSUM_OUT,"%02X",cksum[i]); | |
680 | fprintf(CKSUM_OUT,"\n"); | |
681 | if (l) fclose(CKSUM_OUT); | |
682 | } | |
683 | problems: | |
684 | memset(buf,0,sizeof(buf)); | |
685 | memset(obuf,0,sizeof(obuf)); | |
686 | memset(ks,0,sizeof(ks)); | |
687 | memset(ks2,0,sizeof(ks2)); | |
688 | memset(iv,0,sizeof(iv)); | |
689 | memset(iv2,0,sizeof(iv2)); | |
690 | memset(kk,0,sizeof(kk)); | |
691 | memset(k2,0,sizeof(k2)); | |
692 | memset(uubuf,0,sizeof(uubuf)); | |
693 | memset(b,0,sizeof(b)); | |
694 | memset(bb,0,sizeof(bb)); | |
695 | memset(cksum,0,sizeof(cksum)); | |
696 | if (Exit) EXIT(Exit); | |
697 | } | |
698 | ||
699 | int uufwrite(data, size, num, fp) | |
700 | unsigned char *data; | |
701 | int size; | |
702 | unsigned int num; | |
703 | FILE *fp; | |
704 | ||
705 | /* We ignore this parameter but it should be > ~50 I believe */ | |
706 | ||
707 | ||
708 | { | |
709 | int i,j,left,rem,ret=num; | |
710 | static int start=1; | |
711 | ||
712 | if (start) | |
713 | { | |
714 | fprintf(fp,"begin 600 %s\n", | |
715 | (uuname[0] == '\0')?"text.d":uuname); | |
716 | start=0; | |
717 | } | |
718 | ||
719 | if (uubufnum) | |
720 | { | |
721 | if (uubufnum+num < 45) | |
722 | { | |
723 | memcpy(&(uubuf[uubufnum]),data,(unsigned int)num); | |
724 | uubufnum+=num; | |
725 | return(num); | |
726 | } | |
727 | else | |
728 | { | |
729 | i=45-uubufnum; | |
730 | memcpy(&(uubuf[uubufnum]),data,(unsigned int)i); | |
731 | j=uuencode((unsigned char *)uubuf,45,b); | |
732 | fwrite(b,1,(unsigned int)j,fp); | |
733 | uubufnum=0; | |
734 | data+=i; | |
735 | num-=i; | |
736 | } | |
737 | } | |
738 | ||
739 | for (i=0; i<(((int)num)-INUUBUFN); i+=INUUBUFN) | |
740 | { | |
741 | j=uuencode(&(data[i]),INUUBUFN,b); | |
742 | fwrite(b,1,(unsigned int)j,fp); | |
743 | } | |
744 | rem=(num-i)%45; | |
745 | left=(num-i-rem); | |
746 | if (left) | |
747 | { | |
748 | j=uuencode(&(data[i]),left,b); | |
749 | fwrite(b,1,(unsigned int)j,fp); | |
750 | i+=left; | |
751 | } | |
752 | if (i != num) | |
753 | { | |
754 | memcpy(uubuf,&(data[i]),(unsigned int)rem); | |
755 | uubufnum=rem; | |
756 | } | |
757 | return(ret); | |
758 | } | |
759 | ||
760 | void uufwriteEnd(fp) | |
761 | FILE *fp; | |
762 | { | |
763 | int j; | |
764 | static const char *end=" \nend\n"; | |
765 | ||
766 | if (uubufnum != 0) | |
767 | { | |
768 | uubuf[uubufnum]='\0'; | |
769 | uubuf[uubufnum+1]='\0'; | |
770 | uubuf[uubufnum+2]='\0'; | |
771 | j=uuencode(uubuf,uubufnum,b); | |
772 | fwrite(b,1,(unsigned int)j,fp); | |
773 | } | |
774 | fwrite(end,1,strlen(end),fp); | |
775 | } | |
776 | ||
777 | int uufread(out, size, num, fp) | |
778 | unsigned char *out; | |
779 | int size; /* should always be > ~ 60; I actually ignore this parameter :-) */ | |
780 | unsigned int num; | |
781 | FILE *fp; | |
782 | { | |
783 | int i,j,tot; | |
784 | static int done=0; | |
785 | static int valid=0; | |
786 | static int start=1; | |
787 | ||
788 | if (start) | |
789 | { | |
790 | for (;;) | |
791 | { | |
792 | b[0]='\0'; | |
793 | fgets((char *)b,300,fp); | |
794 | if (b[0] == '\0') | |
795 | { | |
796 | fprintf(stderr,"no 'begin' found in uuencoded input\n"); | |
797 | return(-1); | |
798 | } | |
799 | if (strncmp((char *)b,"begin ",6) == 0) break; | |
800 | } | |
801 | start=0; | |
802 | } | |
803 | if (done) return(0); | |
804 | tot=0; | |
805 | if (valid) | |
806 | { | |
807 | memcpy(out,bb,(unsigned int)valid); | |
808 | tot=valid; | |
809 | valid=0; | |
810 | } | |
811 | for (;;) | |
812 | { | |
813 | b[0]='\0'; | |
814 | fgets((char *)b,300,fp); | |
815 | if (b[0] == '\0') break; | |
816 | i=strlen((char *)b); | |
817 | if ((b[0] == 'e') && (b[1] == 'n') && (b[2] == 'd')) | |
818 | { | |
819 | done=1; | |
820 | while (!feof(fp)) | |
821 | { | |
822 | fgets((char *)b,300,fp); | |
823 | } | |
824 | break; | |
825 | } | |
826 | i=uudecode(b,i,bb); | |
827 | if (i < 0) break; | |
828 | if ((i+tot+8) > num) | |
829 | { | |
830 | /* num to copy to make it a multiple of 8 */ | |
831 | j=(num/8*8)-tot-8; | |
832 | memcpy(&(out[tot]),bb,(unsigned int)j); | |
833 | tot+=j; | |
834 | memcpy(bb,&(bb[j]),(unsigned int)i-j); | |
835 | valid=i-j; | |
836 | break; | |
837 | } | |
838 | memcpy(&(out[tot]),bb,(unsigned int)i); | |
839 | tot+=i; | |
840 | } | |
841 | return(tot); | |
842 | } | |
843 | ||
844 | #define ccc2l(c,l) (l =((DES_LONG)(*((c)++)))<<16, \ | |
845 | l|=((DES_LONG)(*((c)++)))<< 8, \ | |
846 | l|=((DES_LONG)(*((c)++)))) | |
847 | ||
848 | #define l2ccc(l,c) (*((c)++)=(unsigned char)(((l)>>16)&0xff), \ | |
849 | *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ | |
850 | *((c)++)=(unsigned char)(((l) )&0xff)) | |
851 | ||
852 | ||
853 | int uuencode(in, num, out) | |
854 | unsigned char *in; | |
855 | int num; | |
856 | unsigned char *out; | |
857 | { | |
858 | int j,i,n,tot=0; | |
859 | DES_LONG l; | |
860 | register unsigned char *p; | |
861 | p=out; | |
862 | ||
863 | for (j=0; j<num; j+=45) | |
864 | { | |
865 | if (j+45 > num) | |
866 | i=(num-j); | |
867 | else i=45; | |
868 | *(p++)=i+' '; | |
869 | for (n=0; n<i; n+=3) | |
870 | { | |
871 | ccc2l(in,l); | |
872 | *(p++)=((l>>18)&0x3f)+' '; | |
873 | *(p++)=((l>>12)&0x3f)+' '; | |
874 | *(p++)=((l>> 6)&0x3f)+' '; | |
875 | *(p++)=((l )&0x3f)+' '; | |
876 | tot+=4; | |
877 | } | |
878 | *(p++)='\n'; | |
879 | tot+=2; | |
880 | } | |
881 | *p='\0'; | |
882 | l=0; | |
883 | return(tot); | |
884 | } | |
885 | ||
886 | int uudecode(in, num, out) | |
887 | unsigned char *in; | |
888 | int num; | |
889 | unsigned char *out; | |
890 | { | |
891 | int j,i,k; | |
892 | unsigned int n=0,space=0; | |
893 | DES_LONG l; | |
894 | DES_LONG w,x,y,z; | |
895 | unsigned int blank=(unsigned int)'\n'-' '; | |
896 | ||
897 | for (j=0; j<num; ) | |
898 | { | |
899 | n= *(in++)-' '; | |
900 | if (n == blank) | |
901 | { | |
902 | n=0; | |
903 | in--; | |
904 | } | |
905 | if (n > 60) | |
906 | { | |
907 | fprintf(stderr,"uuencoded line length too long\n"); | |
908 | return(-1); | |
909 | } | |
910 | j++; | |
911 | ||
912 | for (i=0; i<n; j+=4,i+=3) | |
913 | { | |
914 | /* the following is for cases where spaces are | |
915 | * removed from lines. | |
916 | */ | |
917 | if (space) | |
918 | { | |
919 | w=x=y=z=0; | |
920 | } | |
921 | else | |
922 | { | |
923 | w= *(in++)-' '; | |
924 | x= *(in++)-' '; | |
925 | y= *(in++)-' '; | |
926 | z= *(in++)-' '; | |
927 | } | |
928 | if ((w > 63) || (x > 63) || (y > 63) || (z > 63)) | |
929 | { | |
930 | k=0; | |
931 | if (w == blank) k=1; | |
932 | if (x == blank) k=2; | |
933 | if (y == blank) k=3; | |
934 | if (z == blank) k=4; | |
935 | space=1; | |
936 | switch (k) { | |
937 | case 1: w=0; in--; | |
938 | case 2: x=0; in--; | |
939 | case 3: y=0; in--; | |
940 | case 4: z=0; in--; | |
941 | break; | |
942 | case 0: | |
943 | space=0; | |
944 | fprintf(stderr,"bad uuencoded data values\n"); | |
945 | w=x=y=z=0; | |
946 | return(-1); | |
947 | break; | |
948 | } | |
949 | } | |
950 | l=(w<<18)|(x<<12)|(y<< 6)|(z ); | |
951 | l2ccc(l,out); | |
952 | } | |
953 | if (*(in++) != '\n') | |
954 | { | |
955 | fprintf(stderr,"missing nl in uuencoded line\n"); | |
956 | w=x=y=z=0; | |
957 | return(-1); | |
958 | } | |
959 | j++; | |
960 | } | |
961 | *out='\0'; | |
962 | w=x=y=z=0; | |
963 | return(n); | |
964 | } |