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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 | |
7d7d2cbc | 62 | #ifndef VMS |
d02b48c6 | 63 | #include <unistd.h> |
7d7d2cbc UM |
64 | #else /* VMS */ |
65 | #ifdef __DECC | |
66 | #include <unistd.h> | |
67 | #if __CRTL_VER < 70000000 | |
68 | #define RAND | |
69 | #endif | |
70 | #else /* not __DECC */ | |
71 | #include <math.h> | |
72 | #define RAND | |
73 | #endif /* __DECC */ | |
74 | #endif /* VMS */ | |
d02b48c6 RE |
75 | #else |
76 | #include <io.h> | |
77 | #define RAND | |
78 | #endif | |
79 | ||
80 | #include <time.h> | |
81 | #include "des_ver.h" | |
82 | ||
83 | #ifdef VMS | |
84 | #include <types.h> | |
85 | #include <stat.h> | |
86 | #else | |
87 | #ifndef _IRIX | |
88 | #include <sys/types.h> | |
89 | #endif | |
90 | #include <sys/stat.h> | |
91 | #endif | |
ec577822 | 92 | #include <openssl/des.h> |
d02b48c6 RE |
93 | |
94 | #if defined(__STDC__) || defined(VMS) || defined(M_XENIX) || defined(MSDOS) | |
95 | #include <string.h> | |
96 | #endif | |
97 | ||
98 | #ifdef RAND | |
99 | #define random rand | |
100 | #define srandom(s) srand(s) | |
101 | #endif | |
102 | ||
d02b48c6 RE |
103 | void usage(void); |
104 | void doencryption(void); | |
105 | int uufwrite(unsigned char *data, int size, unsigned int num, FILE *fp); | |
106 | void uufwriteEnd(FILE *fp); | |
107 | int uufread(unsigned char *out,int size,unsigned int num,FILE *fp); | |
108 | int uuencode(unsigned char *in,int num,unsigned char *out); | |
109 | int uudecode(unsigned char *in,int num,unsigned char *out); | |
58964a49 RE |
110 | void des_3cbc_encrypt(des_cblock *input,des_cblock *output,long length, |
111 | des_key_schedule sk1,des_key_schedule sk2, | |
112 | des_cblock *ivec1,des_cblock *ivec2,int enc); | |
d02b48c6 | 113 | #ifdef VMS |
58964a49 | 114 | #define EXIT(a) exit(a&0x10000000L) |
d02b48c6 RE |
115 | #else |
116 | #define EXIT(a) exit(a) | |
117 | #endif | |
118 | ||
119 | #define BUFSIZE (8*1024) | |
120 | #define VERIFY 1 | |
121 | #define KEYSIZ 8 | |
122 | #define KEYSIZB 1024 /* should hit tty line limit first :-) */ | |
123 | char key[KEYSIZB+1]; | |
124 | int do_encrypt,longk=0; | |
125 | FILE *DES_IN,*DES_OUT,*CKSUM_OUT; | |
126 | char uuname[200]; | |
127 | unsigned char uubuf[50]; | |
128 | int uubufnum=0; | |
129 | #define INUUBUFN (45*100) | |
130 | #define OUTUUBUF (65*100) | |
131 | unsigned char b[OUTUUBUF]; | |
132 | unsigned char bb[300]; | |
133 | des_cblock cksum={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; | |
134 | char cksumname[200]=""; | |
135 | ||
136 | int vflag,cflag,eflag,dflag,kflag,bflag,fflag,sflag,uflag,flag3,hflag,error; | |
137 | ||
6b691a5c | 138 | int main(int argc, char **argv) |
d02b48c6 RE |
139 | { |
140 | int i; | |
141 | struct stat ins,outs; | |
142 | char *p; | |
143 | char *in=NULL,*out=NULL; | |
144 | ||
145 | vflag=cflag=eflag=dflag=kflag=hflag=bflag=fflag=sflag=uflag=flag3=0; | |
146 | error=0; | |
147 | memset(key,0,sizeof(key)); | |
148 | ||
149 | for (i=1; i<argc; i++) | |
150 | { | |
151 | p=argv[i]; | |
152 | if ((p[0] == '-') && (p[1] != '\0')) | |
153 | { | |
154 | p++; | |
155 | while (*p) | |
156 | { | |
157 | switch (*(p++)) | |
158 | { | |
159 | case '3': | |
160 | flag3=1; | |
161 | longk=1; | |
162 | break; | |
163 | case 'c': | |
164 | cflag=1; | |
165 | strncpy(cksumname,p,200); | |
166 | p+=strlen(cksumname); | |
167 | break; | |
168 | case 'C': | |
169 | cflag=1; | |
170 | longk=1; | |
171 | strncpy(cksumname,p,200); | |
172 | p+=strlen(cksumname); | |
173 | break; | |
174 | case 'e': | |
175 | eflag=1; | |
176 | break; | |
177 | case 'v': | |
178 | vflag=1; | |
179 | break; | |
180 | case 'E': | |
181 | eflag=1; | |
182 | longk=1; | |
183 | break; | |
184 | case 'd': | |
185 | dflag=1; | |
186 | break; | |
187 | case 'D': | |
188 | dflag=1; | |
189 | longk=1; | |
190 | break; | |
191 | case 'b': | |
192 | bflag=1; | |
193 | break; | |
194 | case 'f': | |
195 | fflag=1; | |
196 | break; | |
197 | case 's': | |
198 | sflag=1; | |
199 | break; | |
200 | case 'u': | |
201 | uflag=1; | |
202 | strncpy(uuname,p,200); | |
203 | p+=strlen(uuname); | |
204 | break; | |
205 | case 'h': | |
206 | hflag=1; | |
207 | break; | |
208 | case 'k': | |
209 | kflag=1; | |
210 | if ((i+1) == argc) | |
211 | { | |
212 | fputs("must have a key with the -k option\n",stderr); | |
213 | error=1; | |
214 | } | |
215 | else | |
216 | { | |
217 | int j; | |
218 | ||
219 | i++; | |
220 | strncpy(key,argv[i],KEYSIZB); | |
221 | for (j=strlen(argv[i])-1; j>=0; j--) | |
222 | argv[i][j]='\0'; | |
223 | } | |
224 | break; | |
225 | default: | |
226 | fprintf(stderr,"'%c' unknown flag\n",p[-1]); | |
227 | error=1; | |
228 | break; | |
229 | } | |
230 | } | |
231 | } | |
232 | else | |
233 | { | |
234 | if (in == NULL) | |
235 | in=argv[i]; | |
236 | else if (out == NULL) | |
237 | out=argv[i]; | |
238 | else | |
239 | error=1; | |
240 | } | |
241 | } | |
242 | if (error) usage(); | |
243 | /* We either | |
244 | * do checksum or | |
245 | * do encrypt or | |
246 | * do decrypt or | |
247 | * do decrypt then ckecksum or | |
248 | * do checksum then encrypt | |
249 | */ | |
250 | if (((eflag+dflag) == 1) || cflag) | |
251 | { | |
252 | if (eflag) do_encrypt=DES_ENCRYPT; | |
253 | if (dflag) do_encrypt=DES_DECRYPT; | |
254 | } | |
255 | else | |
256 | { | |
257 | if (vflag) | |
258 | { | |
259 | #ifndef _Windows | |
260 | fprintf(stderr,"des(1) built with %s\n",libdes_version); | |
261 | #endif | |
262 | EXIT(1); | |
263 | } | |
264 | else usage(); | |
265 | } | |
266 | ||
267 | #ifndef _Windows | |
268 | if (vflag) fprintf(stderr,"des(1) built with %s\n",libdes_version); | |
269 | #endif | |
270 | if ( (in != NULL) && | |
271 | (out != NULL) && | |
272 | #ifndef MSDOS | |
273 | (stat(in,&ins) != -1) && | |
274 | (stat(out,&outs) != -1) && | |
275 | (ins.st_dev == outs.st_dev) && | |
276 | (ins.st_ino == outs.st_ino)) | |
277 | #else /* MSDOS */ | |
278 | (strcmp(in,out) == 0)) | |
279 | #endif | |
280 | { | |
281 | fputs("input and output file are the same\n",stderr); | |
282 | EXIT(3); | |
283 | } | |
284 | ||
285 | if (!kflag) | |
286 | if (des_read_pw_string(key,KEYSIZB+1,"Enter key:",eflag?VERIFY:0)) | |
287 | { | |
288 | fputs("password error\n",stderr); | |
289 | EXIT(2); | |
290 | } | |
291 | ||
292 | if (in == NULL) | |
293 | DES_IN=stdin; | |
294 | else if ((DES_IN=fopen(in,"r")) == NULL) | |
295 | { | |
296 | perror("opening input file"); | |
297 | EXIT(4); | |
298 | } | |
299 | ||
300 | CKSUM_OUT=stdout; | |
301 | if (out == NULL) | |
302 | { | |
303 | DES_OUT=stdout; | |
304 | CKSUM_OUT=stderr; | |
305 | } | |
306 | else if ((DES_OUT=fopen(out,"w")) == NULL) | |
307 | { | |
308 | perror("opening output file"); | |
309 | EXIT(5); | |
310 | } | |
311 | ||
312 | #ifdef MSDOS | |
313 | /* This should set the file to binary mode. */ | |
314 | { | |
315 | #include <fcntl.h> | |
316 | if (!(uflag && dflag)) | |
317 | setmode(fileno(DES_IN),O_BINARY); | |
318 | if (!(uflag && eflag)) | |
319 | setmode(fileno(DES_OUT),O_BINARY); | |
320 | } | |
321 | #endif | |
322 | ||
323 | doencryption(); | |
324 | fclose(DES_IN); | |
325 | fclose(DES_OUT); | |
326 | EXIT(0); | |
327 | } | |
328 | ||
6b691a5c | 329 | void usage(void) |
d02b48c6 RE |
330 | { |
331 | char **u; | |
332 | static const char *Usage[]={ | |
333 | "des <options> [input-file [output-file]]", | |
334 | "options:", | |
335 | "-v : des(1) version number", | |
336 | "-e : encrypt using sunOS compatible user key to DES key conversion.", | |
337 | "-E : encrypt ", | |
338 | "-d : decrypt using sunOS compatible user key to DES key conversion.", | |
339 | "-D : decrypt ", | |
340 | "-c[ckname] : generate a cbc_cksum using sunOS compatible user key to", | |
341 | " DES key conversion and output to ckname (stdout default,", | |
342 | " stderr if data being output on stdout). The checksum is", | |
343 | " generated before encryption and after decryption if used", | |
344 | " in conjunction with -[eEdD].", | |
345 | "-C[ckname] : generate a cbc_cksum as for -c but compatible with -[ED].", | |
346 | "-k key : use key 'key'", | |
347 | "-h : the key that is entered will be a hexidecimal number", | |
348 | " that is used directly as the des key", | |
349 | "-u[uuname] : input file is uudecoded if -[dD] or output uuencoded data if -[eE]", | |
350 | " (uuname is the filename to put in the uuencode header).", | |
351 | "-b : encrypt using DES in ecb encryption mode, the defaut is cbc mode.", | |
352 | "-3 : encrypt using tripple DES encryption. This uses 2 keys", | |
353 | " generated from the input key. If the input key is less", | |
354 | " than 8 characters long, this is equivelent to normal", | |
9151d396 | 355 | " encryption. Default is triple cbc, -b makes it triple ecb.", |
d02b48c6 RE |
356 | NULL |
357 | }; | |
358 | for (u=(char **)Usage; *u; u++) | |
359 | { | |
360 | fputs(*u,stderr); | |
361 | fputc('\n',stderr); | |
362 | } | |
363 | ||
364 | EXIT(1); | |
365 | } | |
366 | ||
6b691a5c | 367 | void doencryption(void) |
d02b48c6 RE |
368 | { |
369 | #ifdef _LIBC | |
370 | extern int srandom(); | |
371 | extern int random(); | |
372 | extern unsigned long time(); | |
373 | #endif | |
374 | ||
375 | register int i; | |
376 | des_key_schedule ks,ks2; | |
f947eb31 | 377 | des_cblock iv,iv2; |
d02b48c6 RE |
378 | char *p; |
379 | int num=0,j,k,l,rem,ll,len,last,ex=0; | |
380 | des_cblock kk,k2; | |
381 | FILE *O; | |
382 | int Exit=0; | |
383 | #ifndef MSDOS | |
384 | static unsigned char buf[BUFSIZE+8],obuf[BUFSIZE+8]; | |
385 | #else | |
386 | static unsigned char *buf=NULL,*obuf=NULL; | |
387 | ||
388 | if (buf == NULL) | |
389 | { | |
f947eb31 UM |
390 | if ( (( buf=Malloc(BUFSIZE+8)) == NULL) || |
391 | ((obuf=Malloc(BUFSIZE+8)) == NULL)) | |
d02b48c6 RE |
392 | { |
393 | fputs("Not enough memory\n",stderr); | |
394 | Exit=10; | |
395 | goto problems; | |
396 | } | |
397 | } | |
398 | #endif | |
399 | ||
400 | if (hflag) | |
401 | { | |
402 | j=(flag3?16:8); | |
403 | p=key; | |
404 | for (i=0; i<j; i++) | |
405 | { | |
406 | k=0; | |
407 | if ((*p <= '9') && (*p >= '0')) | |
408 | k=(*p-'0')<<4; | |
409 | else if ((*p <= 'f') && (*p >= 'a')) | |
410 | k=(*p-'a'+10)<<4; | |
411 | else if ((*p <= 'F') && (*p >= 'A')) | |
412 | k=(*p-'A'+10)<<4; | |
413 | else | |
414 | { | |
415 | fputs("Bad hex key\n",stderr); | |
416 | Exit=9; | |
417 | goto problems; | |
418 | } | |
419 | p++; | |
420 | if ((*p <= '9') && (*p >= '0')) | |
421 | k|=(*p-'0'); | |
422 | else if ((*p <= 'f') && (*p >= 'a')) | |
423 | k|=(*p-'a'+10); | |
424 | else if ((*p <= 'F') && (*p >= 'A')) | |
425 | k|=(*p-'A'+10); | |
426 | else | |
427 | { | |
428 | fputs("Bad hex key\n",stderr); | |
429 | Exit=9; | |
430 | goto problems; | |
431 | } | |
432 | p++; | |
433 | if (i < 8) | |
434 | kk[i]=k; | |
435 | else | |
436 | k2[i-8]=k; | |
437 | } | |
f947eb31 | 438 | des_set_key(&k2,ks2); |
d02b48c6 RE |
439 | memset(k2,0,sizeof(k2)); |
440 | } | |
441 | else if (longk || flag3) | |
442 | { | |
443 | if (flag3) | |
444 | { | |
f947eb31 UM |
445 | des_string_to_2keys(key,&kk,&k2); |
446 | des_set_key(&k2,ks2); | |
d02b48c6 RE |
447 | memset(k2,0,sizeof(k2)); |
448 | } | |
449 | else | |
f947eb31 | 450 | des_string_to_key(key,&kk); |
d02b48c6 RE |
451 | } |
452 | else | |
453 | for (i=0; i<KEYSIZ; i++) | |
454 | { | |
455 | l=0; | |
456 | k=key[i]; | |
457 | for (j=0; j<8; j++) | |
458 | { | |
459 | if (k&1) l++; | |
460 | k>>=1; | |
461 | } | |
462 | if (l & 1) | |
463 | kk[i]=key[i]&0x7f; | |
464 | else | |
465 | kk[i]=key[i]|0x80; | |
466 | } | |
467 | ||
f947eb31 | 468 | des_set_key(&kk,ks); |
d02b48c6 RE |
469 | memset(key,0,sizeof(key)); |
470 | memset(kk,0,sizeof(kk)); | |
471 | /* woops - A bug that does not showup under unix :-( */ | |
472 | memset(iv,0,sizeof(iv)); | |
473 | memset(iv2,0,sizeof(iv2)); | |
474 | ||
475 | l=1; | |
476 | rem=0; | |
477 | /* first read */ | |
478 | if (eflag || (!dflag && cflag)) | |
479 | { | |
480 | for (;;) | |
481 | { | |
482 | num=l=fread(&(buf[rem]),1,BUFSIZE,DES_IN); | |
483 | l+=rem; | |
484 | num+=rem; | |
485 | if (l < 0) | |
486 | { | |
487 | perror("read error"); | |
488 | Exit=6; | |
489 | goto problems; | |
490 | } | |
491 | ||
492 | rem=l%8; | |
493 | len=l-rem; | |
494 | if (feof(DES_IN)) | |
495 | { | |
496 | srandom((unsigned int)time(NULL)); | |
497 | for (i=7-rem; i>0; i--) | |
498 | buf[l++]=random()&0xff; | |
499 | buf[l++]=rem; | |
500 | ex=1; | |
501 | len+=rem; | |
502 | } | |
503 | else | |
504 | l-=rem; | |
505 | ||
506 | if (cflag) | |
507 | { | |
f947eb31 UM |
508 | des_cbc_cksum(buf,&cksum, |
509 | (long)len,ks,&cksum); | |
d02b48c6 RE |
510 | if (!eflag) |
511 | { | |
512 | if (feof(DES_IN)) break; | |
513 | else continue; | |
514 | } | |
515 | } | |
516 | ||
517 | if (bflag && !flag3) | |
518 | for (i=0; i<l; i+=8) | |
519 | des_ecb_encrypt( | |
520 | (des_cblock *)&(buf[i]), | |
521 | (des_cblock *)&(obuf[i]), | |
522 | ks,do_encrypt); | |
523 | else if (flag3 && bflag) | |
524 | for (i=0; i<l; i+=8) | |
525 | des_ecb2_encrypt( | |
526 | (des_cblock *)&(buf[i]), | |
527 | (des_cblock *)&(obuf[i]), | |
528 | ks,ks2,do_encrypt); | |
529 | else if (flag3 && !bflag) | |
530 | { | |
531 | char tmpbuf[8]; | |
532 | ||
533 | if (rem) memcpy(tmpbuf,&(buf[l]), | |
534 | (unsigned int)rem); | |
535 | des_3cbc_encrypt( | |
536 | (des_cblock *)buf,(des_cblock *)obuf, | |
f947eb31 UM |
537 | (long)l,ks,ks2,&iv, |
538 | &iv2,do_encrypt); | |
d02b48c6 RE |
539 | if (rem) memcpy(&(buf[l]),tmpbuf, |
540 | (unsigned int)rem); | |
541 | } | |
542 | else | |
543 | { | |
544 | des_cbc_encrypt( | |
f947eb31 UM |
545 | buf,obuf, |
546 | (long)l,ks,&iv,do_encrypt); | |
d02b48c6 RE |
547 | if (l >= 8) memcpy(iv,&(obuf[l-8]),8); |
548 | } | |
549 | if (rem) memcpy(buf,&(buf[l]),(unsigned int)rem); | |
550 | ||
551 | i=0; | |
552 | while (i < l) | |
553 | { | |
554 | if (uflag) | |
555 | j=uufwrite(obuf,1,(unsigned int)l-i, | |
556 | DES_OUT); | |
557 | else | |
558 | j=fwrite(obuf,1,(unsigned int)l-i, | |
559 | DES_OUT); | |
560 | if (j == -1) | |
561 | { | |
562 | perror("Write error"); | |
563 | Exit=7; | |
564 | goto problems; | |
565 | } | |
566 | i+=j; | |
567 | } | |
568 | if (feof(DES_IN)) | |
569 | { | |
570 | if (uflag) uufwriteEnd(DES_OUT); | |
571 | break; | |
572 | } | |
573 | } | |
574 | } | |
575 | else /* decrypt */ | |
576 | { | |
577 | ex=1; | |
578 | for (;;) | |
579 | { | |
580 | if (ex) { | |
581 | if (uflag) | |
582 | l=uufread(buf,1,BUFSIZE,DES_IN); | |
583 | else | |
584 | l=fread(buf,1,BUFSIZE,DES_IN); | |
585 | ex=0; | |
586 | rem=l%8; | |
587 | l-=rem; | |
588 | } | |
589 | if (l < 0) | |
590 | { | |
591 | perror("read error"); | |
592 | Exit=6; | |
593 | goto problems; | |
594 | } | |
595 | ||
596 | if (bflag && !flag3) | |
597 | for (i=0; i<l; i+=8) | |
598 | des_ecb_encrypt( | |
599 | (des_cblock *)&(buf[i]), | |
600 | (des_cblock *)&(obuf[i]), | |
601 | ks,do_encrypt); | |
602 | else if (flag3 && bflag) | |
603 | for (i=0; i<l; i+=8) | |
604 | des_ecb2_encrypt( | |
605 | (des_cblock *)&(buf[i]), | |
606 | (des_cblock *)&(obuf[i]), | |
607 | ks,ks2,do_encrypt); | |
608 | else if (flag3 && !bflag) | |
609 | { | |
610 | des_3cbc_encrypt( | |
611 | (des_cblock *)buf,(des_cblock *)obuf, | |
f947eb31 UM |
612 | (long)l,ks,ks2,&iv, |
613 | &iv2,do_encrypt); | |
d02b48c6 RE |
614 | } |
615 | else | |
616 | { | |
617 | des_cbc_encrypt( | |
f947eb31 UM |
618 | buf,obuf, |
619 | (long)l,ks,&iv,do_encrypt); | |
d02b48c6 RE |
620 | if (l >= 8) memcpy(iv,&(buf[l-8]),8); |
621 | } | |
622 | ||
623 | if (uflag) | |
624 | ll=uufread(&(buf[rem]),1,BUFSIZE,DES_IN); | |
625 | else | |
626 | ll=fread(&(buf[rem]),1,BUFSIZE,DES_IN); | |
627 | ll+=rem; | |
628 | rem=ll%8; | |
629 | ll-=rem; | |
630 | if (feof(DES_IN) && (ll == 0)) | |
631 | { | |
632 | last=obuf[l-1]; | |
633 | ||
634 | if ((last > 7) || (last < 0)) | |
635 | { | |
636 | fputs("The file was not decrypted correctly.\n", | |
637 | stderr); | |
638 | Exit=8; | |
639 | last=0; | |
640 | } | |
641 | l=l-8+last; | |
642 | } | |
643 | i=0; | |
f947eb31 UM |
644 | if (cflag) des_cbc_cksum(obuf, |
645 | (des_cblock *)cksum,(long)l/8*8,ks, | |
646 | (des_cblock *)cksum); | |
d02b48c6 RE |
647 | while (i != l) |
648 | { | |
649 | j=fwrite(obuf,1,(unsigned int)l-i,DES_OUT); | |
650 | if (j == -1) | |
651 | { | |
652 | perror("Write error"); | |
653 | Exit=7; | |
654 | goto problems; | |
655 | } | |
656 | i+=j; | |
657 | } | |
658 | l=ll; | |
659 | if ((l == 0) && feof(DES_IN)) break; | |
660 | } | |
661 | } | |
662 | if (cflag) | |
663 | { | |
664 | l=0; | |
665 | if (cksumname[0] != '\0') | |
666 | { | |
667 | if ((O=fopen(cksumname,"w")) != NULL) | |
668 | { | |
669 | CKSUM_OUT=O; | |
670 | l=1; | |
671 | } | |
672 | } | |
673 | for (i=0; i<8; i++) | |
674 | fprintf(CKSUM_OUT,"%02X",cksum[i]); | |
675 | fprintf(CKSUM_OUT,"\n"); | |
676 | if (l) fclose(CKSUM_OUT); | |
677 | } | |
678 | problems: | |
679 | memset(buf,0,sizeof(buf)); | |
680 | memset(obuf,0,sizeof(obuf)); | |
681 | memset(ks,0,sizeof(ks)); | |
682 | memset(ks2,0,sizeof(ks2)); | |
683 | memset(iv,0,sizeof(iv)); | |
684 | memset(iv2,0,sizeof(iv2)); | |
685 | memset(kk,0,sizeof(kk)); | |
686 | memset(k2,0,sizeof(k2)); | |
687 | memset(uubuf,0,sizeof(uubuf)); | |
688 | memset(b,0,sizeof(b)); | |
689 | memset(bb,0,sizeof(bb)); | |
690 | memset(cksum,0,sizeof(cksum)); | |
691 | if (Exit) EXIT(Exit); | |
692 | } | |
693 | ||
6b691a5c UM |
694 | /* We ignore this parameter but it should be > ~50 I believe */ |
695 | int uufwrite(unsigned char *data, int size, unsigned int num, FILE *fp) | |
d02b48c6 RE |
696 | { |
697 | int i,j,left,rem,ret=num; | |
698 | static int start=1; | |
699 | ||
700 | if (start) | |
701 | { | |
702 | fprintf(fp,"begin 600 %s\n", | |
703 | (uuname[0] == '\0')?"text.d":uuname); | |
704 | start=0; | |
705 | } | |
706 | ||
707 | if (uubufnum) | |
708 | { | |
709 | if (uubufnum+num < 45) | |
710 | { | |
711 | memcpy(&(uubuf[uubufnum]),data,(unsigned int)num); | |
712 | uubufnum+=num; | |
713 | return(num); | |
714 | } | |
715 | else | |
716 | { | |
717 | i=45-uubufnum; | |
718 | memcpy(&(uubuf[uubufnum]),data,(unsigned int)i); | |
719 | j=uuencode((unsigned char *)uubuf,45,b); | |
720 | fwrite(b,1,(unsigned int)j,fp); | |
721 | uubufnum=0; | |
722 | data+=i; | |
723 | num-=i; | |
724 | } | |
725 | } | |
726 | ||
727 | for (i=0; i<(((int)num)-INUUBUFN); i+=INUUBUFN) | |
728 | { | |
729 | j=uuencode(&(data[i]),INUUBUFN,b); | |
730 | fwrite(b,1,(unsigned int)j,fp); | |
731 | } | |
732 | rem=(num-i)%45; | |
733 | left=(num-i-rem); | |
734 | if (left) | |
735 | { | |
736 | j=uuencode(&(data[i]),left,b); | |
737 | fwrite(b,1,(unsigned int)j,fp); | |
738 | i+=left; | |
739 | } | |
740 | if (i != num) | |
741 | { | |
742 | memcpy(uubuf,&(data[i]),(unsigned int)rem); | |
743 | uubufnum=rem; | |
744 | } | |
745 | return(ret); | |
746 | } | |
747 | ||
6b691a5c | 748 | void uufwriteEnd(FILE *fp) |
d02b48c6 RE |
749 | { |
750 | int j; | |
751 | static const char *end=" \nend\n"; | |
752 | ||
753 | if (uubufnum != 0) | |
754 | { | |
755 | uubuf[uubufnum]='\0'; | |
756 | uubuf[uubufnum+1]='\0'; | |
757 | uubuf[uubufnum+2]='\0'; | |
758 | j=uuencode(uubuf,uubufnum,b); | |
759 | fwrite(b,1,(unsigned int)j,fp); | |
760 | } | |
761 | fwrite(end,1,strlen(end),fp); | |
762 | } | |
763 | ||
6b691a5c UM |
764 | /* int size: should always be > ~ 60; I actually ignore this parameter :-) */ |
765 | int uufread(unsigned char *out, int size, unsigned int num, FILE *fp) | |
d02b48c6 RE |
766 | { |
767 | int i,j,tot; | |
768 | static int done=0; | |
769 | static int valid=0; | |
770 | static int start=1; | |
771 | ||
772 | if (start) | |
773 | { | |
774 | for (;;) | |
775 | { | |
776 | b[0]='\0'; | |
777 | fgets((char *)b,300,fp); | |
778 | if (b[0] == '\0') | |
779 | { | |
780 | fprintf(stderr,"no 'begin' found in uuencoded input\n"); | |
781 | return(-1); | |
782 | } | |
783 | if (strncmp((char *)b,"begin ",6) == 0) break; | |
784 | } | |
785 | start=0; | |
786 | } | |
787 | if (done) return(0); | |
788 | tot=0; | |
789 | if (valid) | |
790 | { | |
791 | memcpy(out,bb,(unsigned int)valid); | |
792 | tot=valid; | |
793 | valid=0; | |
794 | } | |
795 | for (;;) | |
796 | { | |
797 | b[0]='\0'; | |
798 | fgets((char *)b,300,fp); | |
799 | if (b[0] == '\0') break; | |
800 | i=strlen((char *)b); | |
801 | if ((b[0] == 'e') && (b[1] == 'n') && (b[2] == 'd')) | |
802 | { | |
803 | done=1; | |
804 | while (!feof(fp)) | |
805 | { | |
806 | fgets((char *)b,300,fp); | |
807 | } | |
808 | break; | |
809 | } | |
810 | i=uudecode(b,i,bb); | |
811 | if (i < 0) break; | |
812 | if ((i+tot+8) > num) | |
813 | { | |
814 | /* num to copy to make it a multiple of 8 */ | |
815 | j=(num/8*8)-tot-8; | |
816 | memcpy(&(out[tot]),bb,(unsigned int)j); | |
817 | tot+=j; | |
818 | memcpy(bb,&(bb[j]),(unsigned int)i-j); | |
819 | valid=i-j; | |
820 | break; | |
821 | } | |
822 | memcpy(&(out[tot]),bb,(unsigned int)i); | |
823 | tot+=i; | |
824 | } | |
825 | return(tot); | |
826 | } | |
827 | ||
828 | #define ccc2l(c,l) (l =((DES_LONG)(*((c)++)))<<16, \ | |
829 | l|=((DES_LONG)(*((c)++)))<< 8, \ | |
830 | l|=((DES_LONG)(*((c)++)))) | |
831 | ||
832 | #define l2ccc(l,c) (*((c)++)=(unsigned char)(((l)>>16)&0xff), \ | |
833 | *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ | |
834 | *((c)++)=(unsigned char)(((l) )&0xff)) | |
835 | ||
836 | ||
6b691a5c | 837 | int uuencode(unsigned char *in, int num, unsigned char *out) |
d02b48c6 RE |
838 | { |
839 | int j,i,n,tot=0; | |
840 | DES_LONG l; | |
841 | register unsigned char *p; | |
842 | p=out; | |
843 | ||
844 | for (j=0; j<num; j+=45) | |
845 | { | |
846 | if (j+45 > num) | |
847 | i=(num-j); | |
848 | else i=45; | |
849 | *(p++)=i+' '; | |
850 | for (n=0; n<i; n+=3) | |
851 | { | |
852 | ccc2l(in,l); | |
853 | *(p++)=((l>>18)&0x3f)+' '; | |
854 | *(p++)=((l>>12)&0x3f)+' '; | |
855 | *(p++)=((l>> 6)&0x3f)+' '; | |
856 | *(p++)=((l )&0x3f)+' '; | |
857 | tot+=4; | |
858 | } | |
859 | *(p++)='\n'; | |
860 | tot+=2; | |
861 | } | |
862 | *p='\0'; | |
863 | l=0; | |
864 | return(tot); | |
865 | } | |
866 | ||
6b691a5c | 867 | int uudecode(unsigned char *in, int num, unsigned char *out) |
d02b48c6 RE |
868 | { |
869 | int j,i,k; | |
870 | unsigned int n=0,space=0; | |
871 | DES_LONG l; | |
872 | DES_LONG w,x,y,z; | |
873 | unsigned int blank=(unsigned int)'\n'-' '; | |
874 | ||
875 | for (j=0; j<num; ) | |
876 | { | |
877 | n= *(in++)-' '; | |
878 | if (n == blank) | |
879 | { | |
880 | n=0; | |
881 | in--; | |
882 | } | |
883 | if (n > 60) | |
884 | { | |
885 | fprintf(stderr,"uuencoded line length too long\n"); | |
886 | return(-1); | |
887 | } | |
888 | j++; | |
889 | ||
890 | for (i=0; i<n; j+=4,i+=3) | |
891 | { | |
892 | /* the following is for cases where spaces are | |
893 | * removed from lines. | |
894 | */ | |
895 | if (space) | |
896 | { | |
897 | w=x=y=z=0; | |
898 | } | |
899 | else | |
900 | { | |
901 | w= *(in++)-' '; | |
902 | x= *(in++)-' '; | |
903 | y= *(in++)-' '; | |
904 | z= *(in++)-' '; | |
905 | } | |
906 | if ((w > 63) || (x > 63) || (y > 63) || (z > 63)) | |
907 | { | |
908 | k=0; | |
909 | if (w == blank) k=1; | |
910 | if (x == blank) k=2; | |
911 | if (y == blank) k=3; | |
912 | if (z == blank) k=4; | |
913 | space=1; | |
914 | switch (k) { | |
915 | case 1: w=0; in--; | |
916 | case 2: x=0; in--; | |
917 | case 3: y=0; in--; | |
918 | case 4: z=0; in--; | |
919 | break; | |
920 | case 0: | |
921 | space=0; | |
922 | fprintf(stderr,"bad uuencoded data values\n"); | |
923 | w=x=y=z=0; | |
924 | return(-1); | |
925 | break; | |
926 | } | |
927 | } | |
928 | l=(w<<18)|(x<<12)|(y<< 6)|(z ); | |
929 | l2ccc(l,out); | |
930 | } | |
931 | if (*(in++) != '\n') | |
932 | { | |
933 | fprintf(stderr,"missing nl in uuencoded line\n"); | |
934 | w=x=y=z=0; | |
935 | return(-1); | |
936 | } | |
937 | j++; | |
938 | } | |
939 | *out='\0'; | |
940 | w=x=y=z=0; | |
941 | return(n); | |
942 | } |