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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> | |
48b83a25 | 61 | #include <string.h> |
e766a681 | 62 | #include <openssl/opensslconf.h> |
bc36ee62 RL |
63 | #ifndef OPENSSL_SYS_MSDOS |
64 | #ifndef OPENSSL_SYS_VMS | |
e766a681 | 65 | #include OPENSSL_UNISTD |
bc36ee62 | 66 | #else /* OPENSSL_SYS_VMS */ |
7d7d2cbc UM |
67 | #ifdef __DECC |
68 | #include <unistd.h> | |
7d7d2cbc UM |
69 | #else /* not __DECC */ |
70 | #include <math.h> | |
7d7d2cbc | 71 | #endif /* __DECC */ |
bc36ee62 RL |
72 | #endif /* OPENSSL_SYS_VMS */ |
73 | #else /* OPENSSL_SYS_MSDOS */ | |
d02b48c6 | 74 | #include <io.h> |
d02b48c6 RE |
75 | #endif |
76 | ||
77 | #include <time.h> | |
78 | #include "des_ver.h" | |
79 | ||
bc36ee62 | 80 | #ifdef OPENSSL_SYS_VMS |
d02b48c6 RE |
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 | |
ec577822 | 89 | #include <openssl/des.h> |
cfa3747b | 90 | #include <openssl/rand.h> |
d02b48c6 | 91 | |
d02b48c6 RE |
92 | void usage(void); |
93 | void doencryption(void); | |
94 | int uufwrite(unsigned char *data, int size, unsigned int num, FILE *fp); | |
95 | void uufwriteEnd(FILE *fp); | |
96 | int uufread(unsigned char *out,int size,unsigned int num,FILE *fp); | |
97 | int uuencode(unsigned char *in,int num,unsigned char *out); | |
98 | int uudecode(unsigned char *in,int num,unsigned char *out); | |
58964a49 RE |
99 | void des_3cbc_encrypt(des_cblock *input,des_cblock *output,long length, |
100 | des_key_schedule sk1,des_key_schedule sk2, | |
101 | des_cblock *ivec1,des_cblock *ivec2,int enc); | |
bc36ee62 | 102 | #ifdef OPENSSL_SYS_VMS |
58964a49 | 103 | #define EXIT(a) exit(a&0x10000000L) |
d02b48c6 RE |
104 | #else |
105 | #define EXIT(a) exit(a) | |
106 | #endif | |
107 | ||
108 | #define BUFSIZE (8*1024) | |
109 | #define VERIFY 1 | |
110 | #define KEYSIZ 8 | |
111 | #define KEYSIZB 1024 /* should hit tty line limit first :-) */ | |
112 | char key[KEYSIZB+1]; | |
113 | int do_encrypt,longk=0; | |
114 | FILE *DES_IN,*DES_OUT,*CKSUM_OUT; | |
115 | char uuname[200]; | |
116 | unsigned char uubuf[50]; | |
117 | int uubufnum=0; | |
118 | #define INUUBUFN (45*100) | |
119 | #define OUTUUBUF (65*100) | |
120 | unsigned char b[OUTUUBUF]; | |
121 | unsigned char bb[300]; | |
122 | des_cblock cksum={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; | |
123 | char cksumname[200]=""; | |
124 | ||
125 | int vflag,cflag,eflag,dflag,kflag,bflag,fflag,sflag,uflag,flag3,hflag,error; | |
126 | ||
6b691a5c | 127 | int main(int argc, char **argv) |
d02b48c6 RE |
128 | { |
129 | int i; | |
130 | struct stat ins,outs; | |
131 | char *p; | |
132 | char *in=NULL,*out=NULL; | |
133 | ||
134 | vflag=cflag=eflag=dflag=kflag=hflag=bflag=fflag=sflag=uflag=flag3=0; | |
135 | error=0; | |
136 | memset(key,0,sizeof(key)); | |
137 | ||
138 | for (i=1; i<argc; i++) | |
139 | { | |
140 | p=argv[i]; | |
141 | if ((p[0] == '-') && (p[1] != '\0')) | |
142 | { | |
143 | p++; | |
144 | while (*p) | |
145 | { | |
146 | switch (*(p++)) | |
147 | { | |
148 | case '3': | |
149 | flag3=1; | |
150 | longk=1; | |
151 | break; | |
152 | case 'c': | |
153 | cflag=1; | |
154 | strncpy(cksumname,p,200); | |
155 | p+=strlen(cksumname); | |
156 | break; | |
157 | case 'C': | |
158 | cflag=1; | |
159 | longk=1; | |
160 | strncpy(cksumname,p,200); | |
161 | p+=strlen(cksumname); | |
162 | break; | |
163 | case 'e': | |
164 | eflag=1; | |
165 | break; | |
166 | case 'v': | |
167 | vflag=1; | |
168 | break; | |
169 | case 'E': | |
170 | eflag=1; | |
171 | longk=1; | |
172 | break; | |
173 | case 'd': | |
174 | dflag=1; | |
175 | break; | |
176 | case 'D': | |
177 | dflag=1; | |
178 | longk=1; | |
179 | break; | |
180 | case 'b': | |
181 | bflag=1; | |
182 | break; | |
183 | case 'f': | |
184 | fflag=1; | |
185 | break; | |
186 | case 's': | |
187 | sflag=1; | |
188 | break; | |
189 | case 'u': | |
190 | uflag=1; | |
191 | strncpy(uuname,p,200); | |
192 | p+=strlen(uuname); | |
193 | break; | |
194 | case 'h': | |
195 | hflag=1; | |
196 | break; | |
197 | case 'k': | |
198 | kflag=1; | |
199 | if ((i+1) == argc) | |
200 | { | |
201 | fputs("must have a key with the -k option\n",stderr); | |
202 | error=1; | |
203 | } | |
204 | else | |
205 | { | |
206 | int j; | |
207 | ||
208 | i++; | |
209 | strncpy(key,argv[i],KEYSIZB); | |
210 | for (j=strlen(argv[i])-1; j>=0; j--) | |
211 | argv[i][j]='\0'; | |
212 | } | |
213 | break; | |
214 | default: | |
215 | fprintf(stderr,"'%c' unknown flag\n",p[-1]); | |
216 | error=1; | |
217 | break; | |
218 | } | |
219 | } | |
220 | } | |
221 | else | |
222 | { | |
223 | if (in == NULL) | |
224 | in=argv[i]; | |
225 | else if (out == NULL) | |
226 | out=argv[i]; | |
227 | else | |
228 | error=1; | |
229 | } | |
230 | } | |
231 | if (error) usage(); | |
232 | /* We either | |
233 | * do checksum or | |
234 | * do encrypt or | |
235 | * do decrypt or | |
236 | * do decrypt then ckecksum or | |
237 | * do checksum then encrypt | |
238 | */ | |
239 | if (((eflag+dflag) == 1) || cflag) | |
240 | { | |
241 | if (eflag) do_encrypt=DES_ENCRYPT; | |
242 | if (dflag) do_encrypt=DES_DECRYPT; | |
243 | } | |
244 | else | |
245 | { | |
246 | if (vflag) | |
247 | { | |
248 | #ifndef _Windows | |
249 | fprintf(stderr,"des(1) built with %s\n",libdes_version); | |
250 | #endif | |
251 | EXIT(1); | |
252 | } | |
253 | else usage(); | |
254 | } | |
255 | ||
256 | #ifndef _Windows | |
257 | if (vflag) fprintf(stderr,"des(1) built with %s\n",libdes_version); | |
258 | #endif | |
259 | if ( (in != NULL) && | |
260 | (out != NULL) && | |
bc36ee62 | 261 | #ifndef OPENSSL_SYS_MSDOS |
d02b48c6 RE |
262 | (stat(in,&ins) != -1) && |
263 | (stat(out,&outs) != -1) && | |
264 | (ins.st_dev == outs.st_dev) && | |
265 | (ins.st_ino == outs.st_ino)) | |
bc36ee62 | 266 | #else /* OPENSSL_SYS_MSDOS */ |
d02b48c6 RE |
267 | (strcmp(in,out) == 0)) |
268 | #endif | |
269 | { | |
270 | fputs("input and output file are the same\n",stderr); | |
271 | EXIT(3); | |
272 | } | |
273 | ||
274 | if (!kflag) | |
275 | if (des_read_pw_string(key,KEYSIZB+1,"Enter key:",eflag?VERIFY:0)) | |
276 | { | |
277 | fputs("password error\n",stderr); | |
278 | EXIT(2); | |
279 | } | |
280 | ||
281 | if (in == NULL) | |
282 | DES_IN=stdin; | |
283 | else if ((DES_IN=fopen(in,"r")) == NULL) | |
284 | { | |
285 | perror("opening input file"); | |
286 | EXIT(4); | |
287 | } | |
288 | ||
289 | CKSUM_OUT=stdout; | |
290 | if (out == NULL) | |
291 | { | |
292 | DES_OUT=stdout; | |
293 | CKSUM_OUT=stderr; | |
294 | } | |
295 | else if ((DES_OUT=fopen(out,"w")) == NULL) | |
296 | { | |
297 | perror("opening output file"); | |
298 | EXIT(5); | |
299 | } | |
300 | ||
bc36ee62 | 301 | #ifdef OPENSSL_SYS_MSDOS |
d02b48c6 RE |
302 | /* This should set the file to binary mode. */ |
303 | { | |
304 | #include <fcntl.h> | |
305 | if (!(uflag && dflag)) | |
306 | setmode(fileno(DES_IN),O_BINARY); | |
307 | if (!(uflag && eflag)) | |
308 | setmode(fileno(DES_OUT),O_BINARY); | |
309 | } | |
310 | #endif | |
311 | ||
312 | doencryption(); | |
313 | fclose(DES_IN); | |
314 | fclose(DES_OUT); | |
315 | EXIT(0); | |
316 | } | |
317 | ||
6b691a5c | 318 | void usage(void) |
d02b48c6 RE |
319 | { |
320 | char **u; | |
321 | static const char *Usage[]={ | |
322 | "des <options> [input-file [output-file]]", | |
323 | "options:", | |
324 | "-v : des(1) version number", | |
657e60fa | 325 | "-e : encrypt using SunOS compatible user key to DES key conversion.", |
d02b48c6 | 326 | "-E : encrypt ", |
657e60fa | 327 | "-d : decrypt using SunOS compatible user key to DES key conversion.", |
d02b48c6 | 328 | "-D : decrypt ", |
657e60fa | 329 | "-c[ckname] : generate a cbc_cksum using SunOS compatible user key to", |
d02b48c6 RE |
330 | " DES key conversion and output to ckname (stdout default,", |
331 | " stderr if data being output on stdout). The checksum is", | |
332 | " generated before encryption and after decryption if used", | |
333 | " in conjunction with -[eEdD].", | |
334 | "-C[ckname] : generate a cbc_cksum as for -c but compatible with -[ED].", | |
335 | "-k key : use key 'key'", | |
1bf0b46b | 336 | "-h : the key that is entered will be a hexadecimal number", |
d02b48c6 RE |
337 | " that is used directly as the des key", |
338 | "-u[uuname] : input file is uudecoded if -[dD] or output uuencoded data if -[eE]", | |
339 | " (uuname is the filename to put in the uuencode header).", | |
657e60fa UM |
340 | "-b : encrypt using DES in ecb encryption mode, the default is cbc mode.", |
341 | "-3 : encrypt using triple DES encryption. This uses 2 keys", | |
d02b48c6 | 342 | " generated from the input key. If the input key is less", |
657e60fa | 343 | " than 8 characters long, this is equivalent to normal", |
9151d396 | 344 | " encryption. Default is triple cbc, -b makes it triple ecb.", |
d02b48c6 RE |
345 | NULL |
346 | }; | |
347 | for (u=(char **)Usage; *u; u++) | |
348 | { | |
349 | fputs(*u,stderr); | |
350 | fputc('\n',stderr); | |
351 | } | |
352 | ||
353 | EXIT(1); | |
354 | } | |
355 | ||
6b691a5c | 356 | void doencryption(void) |
d02b48c6 RE |
357 | { |
358 | #ifdef _LIBC | |
d02b48c6 RE |
359 | extern unsigned long time(); |
360 | #endif | |
361 | ||
362 | register int i; | |
363 | des_key_schedule ks,ks2; | |
f947eb31 | 364 | des_cblock iv,iv2; |
d02b48c6 RE |
365 | char *p; |
366 | int num=0,j,k,l,rem,ll,len,last,ex=0; | |
367 | des_cblock kk,k2; | |
368 | FILE *O; | |
369 | int Exit=0; | |
bc36ee62 | 370 | #ifndef OPENSSL_SYS_MSDOS |
d02b48c6 RE |
371 | static unsigned char buf[BUFSIZE+8],obuf[BUFSIZE+8]; |
372 | #else | |
373 | static unsigned char *buf=NULL,*obuf=NULL; | |
374 | ||
375 | if (buf == NULL) | |
376 | { | |
26a3a48d RL |
377 | if ( (( buf=OPENSSL_malloc(BUFSIZE+8)) == NULL) || |
378 | ((obuf=OPENSSL_malloc(BUFSIZE+8)) == NULL)) | |
d02b48c6 RE |
379 | { |
380 | fputs("Not enough memory\n",stderr); | |
381 | Exit=10; | |
382 | goto problems; | |
383 | } | |
384 | } | |
385 | #endif | |
386 | ||
387 | if (hflag) | |
388 | { | |
389 | j=(flag3?16:8); | |
390 | p=key; | |
391 | for (i=0; i<j; i++) | |
392 | { | |
393 | k=0; | |
394 | if ((*p <= '9') && (*p >= '0')) | |
395 | k=(*p-'0')<<4; | |
396 | else if ((*p <= 'f') && (*p >= 'a')) | |
397 | k=(*p-'a'+10)<<4; | |
398 | else if ((*p <= 'F') && (*p >= 'A')) | |
399 | k=(*p-'A'+10)<<4; | |
400 | else | |
401 | { | |
402 | fputs("Bad hex key\n",stderr); | |
403 | Exit=9; | |
404 | goto problems; | |
405 | } | |
406 | p++; | |
407 | if ((*p <= '9') && (*p >= '0')) | |
408 | k|=(*p-'0'); | |
409 | else if ((*p <= 'f') && (*p >= 'a')) | |
410 | k|=(*p-'a'+10); | |
411 | else if ((*p <= 'F') && (*p >= 'A')) | |
412 | k|=(*p-'A'+10); | |
413 | else | |
414 | { | |
415 | fputs("Bad hex key\n",stderr); | |
416 | Exit=9; | |
417 | goto problems; | |
418 | } | |
419 | p++; | |
420 | if (i < 8) | |
421 | kk[i]=k; | |
422 | else | |
423 | k2[i-8]=k; | |
424 | } | |
cddfe788 | 425 | des_set_key_unchecked(&k2,ks2); |
d02b48c6 RE |
426 | memset(k2,0,sizeof(k2)); |
427 | } | |
428 | else if (longk || flag3) | |
429 | { | |
430 | if (flag3) | |
431 | { | |
f947eb31 | 432 | des_string_to_2keys(key,&kk,&k2); |
cddfe788 | 433 | des_set_key_unchecked(&k2,ks2); |
d02b48c6 RE |
434 | memset(k2,0,sizeof(k2)); |
435 | } | |
436 | else | |
f947eb31 | 437 | des_string_to_key(key,&kk); |
d02b48c6 RE |
438 | } |
439 | else | |
440 | for (i=0; i<KEYSIZ; i++) | |
441 | { | |
442 | l=0; | |
443 | k=key[i]; | |
444 | for (j=0; j<8; j++) | |
445 | { | |
446 | if (k&1) l++; | |
447 | k>>=1; | |
448 | } | |
449 | if (l & 1) | |
450 | kk[i]=key[i]&0x7f; | |
451 | else | |
452 | kk[i]=key[i]|0x80; | |
453 | } | |
454 | ||
cddfe788 | 455 | des_set_key_unchecked(&kk,ks); |
d02b48c6 RE |
456 | memset(key,0,sizeof(key)); |
457 | memset(kk,0,sizeof(kk)); | |
458 | /* woops - A bug that does not showup under unix :-( */ | |
459 | memset(iv,0,sizeof(iv)); | |
460 | memset(iv2,0,sizeof(iv2)); | |
461 | ||
462 | l=1; | |
463 | rem=0; | |
464 | /* first read */ | |
465 | if (eflag || (!dflag && cflag)) | |
466 | { | |
467 | for (;;) | |
468 | { | |
469 | num=l=fread(&(buf[rem]),1,BUFSIZE,DES_IN); | |
470 | l+=rem; | |
471 | num+=rem; | |
472 | if (l < 0) | |
473 | { | |
474 | perror("read error"); | |
475 | Exit=6; | |
476 | goto problems; | |
477 | } | |
478 | ||
479 | rem=l%8; | |
480 | len=l-rem; | |
481 | if (feof(DES_IN)) | |
482 | { | |
d02b48c6 | 483 | for (i=7-rem; i>0; i--) |
e7f97e2d | 484 | RAND_pseudo_bytes(buf + l++, 1); |
d02b48c6 RE |
485 | buf[l++]=rem; |
486 | ex=1; | |
487 | len+=rem; | |
488 | } | |
489 | else | |
490 | l-=rem; | |
491 | ||
492 | if (cflag) | |
493 | { | |
f947eb31 UM |
494 | des_cbc_cksum(buf,&cksum, |
495 | (long)len,ks,&cksum); | |
d02b48c6 RE |
496 | if (!eflag) |
497 | { | |
498 | if (feof(DES_IN)) break; | |
499 | else continue; | |
500 | } | |
501 | } | |
502 | ||
503 | if (bflag && !flag3) | |
504 | for (i=0; i<l; i+=8) | |
505 | des_ecb_encrypt( | |
506 | (des_cblock *)&(buf[i]), | |
507 | (des_cblock *)&(obuf[i]), | |
508 | ks,do_encrypt); | |
509 | else if (flag3 && bflag) | |
510 | for (i=0; i<l; i+=8) | |
511 | des_ecb2_encrypt( | |
512 | (des_cblock *)&(buf[i]), | |
513 | (des_cblock *)&(obuf[i]), | |
514 | ks,ks2,do_encrypt); | |
515 | else if (flag3 && !bflag) | |
516 | { | |
517 | char tmpbuf[8]; | |
518 | ||
519 | if (rem) memcpy(tmpbuf,&(buf[l]), | |
520 | (unsigned int)rem); | |
521 | des_3cbc_encrypt( | |
522 | (des_cblock *)buf,(des_cblock *)obuf, | |
f947eb31 UM |
523 | (long)l,ks,ks2,&iv, |
524 | &iv2,do_encrypt); | |
d02b48c6 RE |
525 | if (rem) memcpy(&(buf[l]),tmpbuf, |
526 | (unsigned int)rem); | |
527 | } | |
528 | else | |
529 | { | |
530 | des_cbc_encrypt( | |
f947eb31 UM |
531 | buf,obuf, |
532 | (long)l,ks,&iv,do_encrypt); | |
d02b48c6 RE |
533 | if (l >= 8) memcpy(iv,&(obuf[l-8]),8); |
534 | } | |
535 | if (rem) memcpy(buf,&(buf[l]),(unsigned int)rem); | |
536 | ||
537 | i=0; | |
538 | while (i < l) | |
539 | { | |
540 | if (uflag) | |
541 | j=uufwrite(obuf,1,(unsigned int)l-i, | |
542 | DES_OUT); | |
543 | else | |
544 | j=fwrite(obuf,1,(unsigned int)l-i, | |
545 | DES_OUT); | |
546 | if (j == -1) | |
547 | { | |
548 | perror("Write error"); | |
549 | Exit=7; | |
550 | goto problems; | |
551 | } | |
552 | i+=j; | |
553 | } | |
554 | if (feof(DES_IN)) | |
555 | { | |
556 | if (uflag) uufwriteEnd(DES_OUT); | |
557 | break; | |
558 | } | |
559 | } | |
560 | } | |
561 | else /* decrypt */ | |
562 | { | |
563 | ex=1; | |
564 | for (;;) | |
565 | { | |
566 | if (ex) { | |
567 | if (uflag) | |
568 | l=uufread(buf,1,BUFSIZE,DES_IN); | |
569 | else | |
570 | l=fread(buf,1,BUFSIZE,DES_IN); | |
571 | ex=0; | |
572 | rem=l%8; | |
573 | l-=rem; | |
574 | } | |
575 | if (l < 0) | |
576 | { | |
577 | perror("read error"); | |
578 | Exit=6; | |
579 | goto problems; | |
580 | } | |
581 | ||
582 | if (bflag && !flag3) | |
583 | for (i=0; i<l; i+=8) | |
584 | des_ecb_encrypt( | |
585 | (des_cblock *)&(buf[i]), | |
586 | (des_cblock *)&(obuf[i]), | |
587 | ks,do_encrypt); | |
588 | else if (flag3 && bflag) | |
589 | for (i=0; i<l; i+=8) | |
590 | des_ecb2_encrypt( | |
591 | (des_cblock *)&(buf[i]), | |
592 | (des_cblock *)&(obuf[i]), | |
593 | ks,ks2,do_encrypt); | |
594 | else if (flag3 && !bflag) | |
595 | { | |
596 | des_3cbc_encrypt( | |
597 | (des_cblock *)buf,(des_cblock *)obuf, | |
f947eb31 UM |
598 | (long)l,ks,ks2,&iv, |
599 | &iv2,do_encrypt); | |
d02b48c6 RE |
600 | } |
601 | else | |
602 | { | |
603 | des_cbc_encrypt( | |
f947eb31 UM |
604 | buf,obuf, |
605 | (long)l,ks,&iv,do_encrypt); | |
d02b48c6 RE |
606 | if (l >= 8) memcpy(iv,&(buf[l-8]),8); |
607 | } | |
608 | ||
609 | if (uflag) | |
610 | ll=uufread(&(buf[rem]),1,BUFSIZE,DES_IN); | |
611 | else | |
612 | ll=fread(&(buf[rem]),1,BUFSIZE,DES_IN); | |
613 | ll+=rem; | |
614 | rem=ll%8; | |
615 | ll-=rem; | |
616 | if (feof(DES_IN) && (ll == 0)) | |
617 | { | |
618 | last=obuf[l-1]; | |
619 | ||
620 | if ((last > 7) || (last < 0)) | |
621 | { | |
622 | fputs("The file was not decrypted correctly.\n", | |
623 | stderr); | |
624 | Exit=8; | |
625 | last=0; | |
626 | } | |
627 | l=l-8+last; | |
628 | } | |
629 | i=0; | |
f947eb31 UM |
630 | if (cflag) des_cbc_cksum(obuf, |
631 | (des_cblock *)cksum,(long)l/8*8,ks, | |
632 | (des_cblock *)cksum); | |
d02b48c6 RE |
633 | while (i != l) |
634 | { | |
635 | j=fwrite(obuf,1,(unsigned int)l-i,DES_OUT); | |
636 | if (j == -1) | |
637 | { | |
638 | perror("Write error"); | |
639 | Exit=7; | |
640 | goto problems; | |
641 | } | |
642 | i+=j; | |
643 | } | |
644 | l=ll; | |
645 | if ((l == 0) && feof(DES_IN)) break; | |
646 | } | |
647 | } | |
648 | if (cflag) | |
649 | { | |
650 | l=0; | |
651 | if (cksumname[0] != '\0') | |
652 | { | |
653 | if ((O=fopen(cksumname,"w")) != NULL) | |
654 | { | |
655 | CKSUM_OUT=O; | |
656 | l=1; | |
657 | } | |
658 | } | |
659 | for (i=0; i<8; i++) | |
660 | fprintf(CKSUM_OUT,"%02X",cksum[i]); | |
661 | fprintf(CKSUM_OUT,"\n"); | |
662 | if (l) fclose(CKSUM_OUT); | |
663 | } | |
664 | problems: | |
665 | memset(buf,0,sizeof(buf)); | |
666 | memset(obuf,0,sizeof(obuf)); | |
667 | memset(ks,0,sizeof(ks)); | |
668 | memset(ks2,0,sizeof(ks2)); | |
669 | memset(iv,0,sizeof(iv)); | |
670 | memset(iv2,0,sizeof(iv2)); | |
671 | memset(kk,0,sizeof(kk)); | |
672 | memset(k2,0,sizeof(k2)); | |
673 | memset(uubuf,0,sizeof(uubuf)); | |
674 | memset(b,0,sizeof(b)); | |
675 | memset(bb,0,sizeof(bb)); | |
676 | memset(cksum,0,sizeof(cksum)); | |
677 | if (Exit) EXIT(Exit); | |
678 | } | |
679 | ||
6b691a5c UM |
680 | /* We ignore this parameter but it should be > ~50 I believe */ |
681 | int uufwrite(unsigned char *data, int size, unsigned int num, FILE *fp) | |
d02b48c6 RE |
682 | { |
683 | int i,j,left,rem,ret=num; | |
684 | static int start=1; | |
685 | ||
686 | if (start) | |
687 | { | |
688 | fprintf(fp,"begin 600 %s\n", | |
689 | (uuname[0] == '\0')?"text.d":uuname); | |
690 | start=0; | |
691 | } | |
692 | ||
693 | if (uubufnum) | |
694 | { | |
695 | if (uubufnum+num < 45) | |
696 | { | |
697 | memcpy(&(uubuf[uubufnum]),data,(unsigned int)num); | |
698 | uubufnum+=num; | |
699 | return(num); | |
700 | } | |
701 | else | |
702 | { | |
703 | i=45-uubufnum; | |
704 | memcpy(&(uubuf[uubufnum]),data,(unsigned int)i); | |
705 | j=uuencode((unsigned char *)uubuf,45,b); | |
706 | fwrite(b,1,(unsigned int)j,fp); | |
707 | uubufnum=0; | |
708 | data+=i; | |
709 | num-=i; | |
710 | } | |
711 | } | |
712 | ||
713 | for (i=0; i<(((int)num)-INUUBUFN); i+=INUUBUFN) | |
714 | { | |
715 | j=uuencode(&(data[i]),INUUBUFN,b); | |
716 | fwrite(b,1,(unsigned int)j,fp); | |
717 | } | |
718 | rem=(num-i)%45; | |
719 | left=(num-i-rem); | |
720 | if (left) | |
721 | { | |
722 | j=uuencode(&(data[i]),left,b); | |
723 | fwrite(b,1,(unsigned int)j,fp); | |
724 | i+=left; | |
725 | } | |
726 | if (i != num) | |
727 | { | |
728 | memcpy(uubuf,&(data[i]),(unsigned int)rem); | |
729 | uubufnum=rem; | |
730 | } | |
731 | return(ret); | |
732 | } | |
733 | ||
6b691a5c | 734 | void uufwriteEnd(FILE *fp) |
d02b48c6 RE |
735 | { |
736 | int j; | |
737 | static const char *end=" \nend\n"; | |
738 | ||
739 | if (uubufnum != 0) | |
740 | { | |
741 | uubuf[uubufnum]='\0'; | |
742 | uubuf[uubufnum+1]='\0'; | |
743 | uubuf[uubufnum+2]='\0'; | |
744 | j=uuencode(uubuf,uubufnum,b); | |
745 | fwrite(b,1,(unsigned int)j,fp); | |
746 | } | |
747 | fwrite(end,1,strlen(end),fp); | |
748 | } | |
749 | ||
6b691a5c UM |
750 | /* int size: should always be > ~ 60; I actually ignore this parameter :-) */ |
751 | int uufread(unsigned char *out, int size, unsigned int num, FILE *fp) | |
d02b48c6 RE |
752 | { |
753 | int i,j,tot; | |
754 | static int done=0; | |
755 | static int valid=0; | |
756 | static int start=1; | |
757 | ||
758 | if (start) | |
759 | { | |
760 | for (;;) | |
761 | { | |
762 | b[0]='\0'; | |
763 | fgets((char *)b,300,fp); | |
764 | if (b[0] == '\0') | |
765 | { | |
766 | fprintf(stderr,"no 'begin' found in uuencoded input\n"); | |
767 | return(-1); | |
768 | } | |
769 | if (strncmp((char *)b,"begin ",6) == 0) break; | |
770 | } | |
771 | start=0; | |
772 | } | |
773 | if (done) return(0); | |
774 | tot=0; | |
775 | if (valid) | |
776 | { | |
777 | memcpy(out,bb,(unsigned int)valid); | |
778 | tot=valid; | |
779 | valid=0; | |
780 | } | |
781 | for (;;) | |
782 | { | |
783 | b[0]='\0'; | |
784 | fgets((char *)b,300,fp); | |
785 | if (b[0] == '\0') break; | |
786 | i=strlen((char *)b); | |
787 | if ((b[0] == 'e') && (b[1] == 'n') && (b[2] == 'd')) | |
788 | { | |
789 | done=1; | |
790 | while (!feof(fp)) | |
791 | { | |
792 | fgets((char *)b,300,fp); | |
793 | } | |
794 | break; | |
795 | } | |
796 | i=uudecode(b,i,bb); | |
797 | if (i < 0) break; | |
798 | if ((i+tot+8) > num) | |
799 | { | |
800 | /* num to copy to make it a multiple of 8 */ | |
801 | j=(num/8*8)-tot-8; | |
802 | memcpy(&(out[tot]),bb,(unsigned int)j); | |
803 | tot+=j; | |
804 | memcpy(bb,&(bb[j]),(unsigned int)i-j); | |
805 | valid=i-j; | |
806 | break; | |
807 | } | |
808 | memcpy(&(out[tot]),bb,(unsigned int)i); | |
809 | tot+=i; | |
810 | } | |
811 | return(tot); | |
812 | } | |
813 | ||
814 | #define ccc2l(c,l) (l =((DES_LONG)(*((c)++)))<<16, \ | |
815 | l|=((DES_LONG)(*((c)++)))<< 8, \ | |
816 | l|=((DES_LONG)(*((c)++)))) | |
817 | ||
818 | #define l2ccc(l,c) (*((c)++)=(unsigned char)(((l)>>16)&0xff), \ | |
819 | *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ | |
820 | *((c)++)=(unsigned char)(((l) )&0xff)) | |
821 | ||
822 | ||
6b691a5c | 823 | int uuencode(unsigned char *in, int num, unsigned char *out) |
d02b48c6 RE |
824 | { |
825 | int j,i,n,tot=0; | |
826 | DES_LONG l; | |
827 | register unsigned char *p; | |
828 | p=out; | |
829 | ||
830 | for (j=0; j<num; j+=45) | |
831 | { | |
832 | if (j+45 > num) | |
833 | i=(num-j); | |
834 | else i=45; | |
835 | *(p++)=i+' '; | |
836 | for (n=0; n<i; n+=3) | |
837 | { | |
838 | ccc2l(in,l); | |
839 | *(p++)=((l>>18)&0x3f)+' '; | |
840 | *(p++)=((l>>12)&0x3f)+' '; | |
841 | *(p++)=((l>> 6)&0x3f)+' '; | |
842 | *(p++)=((l )&0x3f)+' '; | |
843 | tot+=4; | |
844 | } | |
845 | *(p++)='\n'; | |
846 | tot+=2; | |
847 | } | |
848 | *p='\0'; | |
849 | l=0; | |
850 | return(tot); | |
851 | } | |
852 | ||
6b691a5c | 853 | int uudecode(unsigned char *in, int num, unsigned char *out) |
d02b48c6 RE |
854 | { |
855 | int j,i,k; | |
856 | unsigned int n=0,space=0; | |
857 | DES_LONG l; | |
858 | DES_LONG w,x,y,z; | |
859 | unsigned int blank=(unsigned int)'\n'-' '; | |
860 | ||
861 | for (j=0; j<num; ) | |
862 | { | |
863 | n= *(in++)-' '; | |
864 | if (n == blank) | |
865 | { | |
866 | n=0; | |
867 | in--; | |
868 | } | |
869 | if (n > 60) | |
870 | { | |
871 | fprintf(stderr,"uuencoded line length too long\n"); | |
872 | return(-1); | |
873 | } | |
874 | j++; | |
875 | ||
876 | for (i=0; i<n; j+=4,i+=3) | |
877 | { | |
878 | /* the following is for cases where spaces are | |
879 | * removed from lines. | |
880 | */ | |
881 | if (space) | |
882 | { | |
883 | w=x=y=z=0; | |
884 | } | |
885 | else | |
886 | { | |
887 | w= *(in++)-' '; | |
888 | x= *(in++)-' '; | |
889 | y= *(in++)-' '; | |
890 | z= *(in++)-' '; | |
891 | } | |
892 | if ((w > 63) || (x > 63) || (y > 63) || (z > 63)) | |
893 | { | |
894 | k=0; | |
895 | if (w == blank) k=1; | |
896 | if (x == blank) k=2; | |
897 | if (y == blank) k=3; | |
898 | if (z == blank) k=4; | |
899 | space=1; | |
900 | switch (k) { | |
901 | case 1: w=0; in--; | |
902 | case 2: x=0; in--; | |
903 | case 3: y=0; in--; | |
904 | case 4: z=0; in--; | |
905 | break; | |
906 | case 0: | |
907 | space=0; | |
908 | fprintf(stderr,"bad uuencoded data values\n"); | |
909 | w=x=y=z=0; | |
910 | return(-1); | |
911 | break; | |
912 | } | |
913 | } | |
914 | l=(w<<18)|(x<<12)|(y<< 6)|(z ); | |
915 | l2ccc(l,out); | |
916 | } | |
917 | if (*(in++) != '\n') | |
918 | { | |
919 | fprintf(stderr,"missing nl in uuencoded line\n"); | |
920 | w=x=y=z=0; | |
921 | return(-1); | |
922 | } | |
923 | j++; | |
924 | } | |
925 | *out='\0'; | |
926 | w=x=y=z=0; | |
927 | return(n); | |
928 | } |