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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> |
2ed2d151 | 91 | #include <openssl/ui_compat.h> |
d02b48c6 | 92 | |
d02b48c6 RE |
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); | |
c2e4f17c RL |
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); | |
bc36ee62 | 103 | #ifdef OPENSSL_SYS_VMS |
58964a49 | 104 | #define EXIT(a) exit(a&0x10000000L) |
d02b48c6 RE |
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]; | |
c2e4f17c | 123 | DES_cblock cksum={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; |
d02b48c6 RE |
124 | char cksumname[200]=""; |
125 | ||
126 | int vflag,cflag,eflag,dflag,kflag,bflag,fflag,sflag,uflag,flag3,hflag,error; | |
127 | ||
6b691a5c | 128 | int main(int argc, char **argv) |
d02b48c6 RE |
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); | |
26414ee0 | 156 | cksumname[sizeof(cksumname)-1]='\0'; |
d02b48c6 RE |
157 | p+=strlen(cksumname); |
158 | break; | |
159 | case 'C': | |
160 | cflag=1; | |
161 | longk=1; | |
162 | strncpy(cksumname,p,200); | |
26414ee0 | 163 | cksumname[sizeof(cksumname)-1]='\0'; |
d02b48c6 RE |
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); | |
26414ee0 | 195 | uuname[sizeof(uuname)-1]='\0'; |
d02b48c6 RE |
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) && | |
bc36ee62 | 265 | #ifndef OPENSSL_SYS_MSDOS |
d02b48c6 RE |
266 | (stat(in,&ins) != -1) && |
267 | (stat(out,&outs) != -1) && | |
268 | (ins.st_dev == outs.st_dev) && | |
269 | (ins.st_ino == outs.st_ino)) | |
bc36ee62 | 270 | #else /* OPENSSL_SYS_MSDOS */ |
d02b48c6 RE |
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 | ||
bc36ee62 | 305 | #ifdef OPENSSL_SYS_MSDOS |
d02b48c6 RE |
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 | ||
6b691a5c | 322 | void usage(void) |
d02b48c6 RE |
323 | { |
324 | char **u; | |
325 | static const char *Usage[]={ | |
326 | "des <options> [input-file [output-file]]", | |
327 | "options:", | |
328 | "-v : des(1) version number", | |
657e60fa | 329 | "-e : encrypt using SunOS compatible user key to DES key conversion.", |
d02b48c6 | 330 | "-E : encrypt ", |
657e60fa | 331 | "-d : decrypt using SunOS compatible user key to DES key conversion.", |
d02b48c6 | 332 | "-D : decrypt ", |
657e60fa | 333 | "-c[ckname] : generate a cbc_cksum using SunOS compatible user key to", |
d02b48c6 RE |
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'", | |
1bf0b46b | 340 | "-h : the key that is entered will be a hexadecimal number", |
d02b48c6 RE |
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).", | |
657e60fa UM |
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", | |
d02b48c6 | 346 | " generated from the input key. If the input key is less", |
657e60fa | 347 | " than 8 characters long, this is equivalent to normal", |
9151d396 | 348 | " encryption. Default is triple cbc, -b makes it triple ecb.", |
d02b48c6 RE |
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 | ||
6b691a5c | 360 | void doencryption(void) |
d02b48c6 RE |
361 | { |
362 | #ifdef _LIBC | |
d02b48c6 RE |
363 | extern unsigned long time(); |
364 | #endif | |
365 | ||
366 | register int i; | |
c2e4f17c RL |
367 | DES_key_schedule ks,ks2; |
368 | DES_cblock iv,iv2; | |
d02b48c6 RE |
369 | char *p; |
370 | int num=0,j,k,l,rem,ll,len,last,ex=0; | |
c2e4f17c | 371 | DES_cblock kk,k2; |
d02b48c6 RE |
372 | FILE *O; |
373 | int Exit=0; | |
bc36ee62 | 374 | #ifndef OPENSSL_SYS_MSDOS |
d02b48c6 RE |
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 | { | |
26a3a48d RL |
381 | if ( (( buf=OPENSSL_malloc(BUFSIZE+8)) == NULL) || |
382 | ((obuf=OPENSSL_malloc(BUFSIZE+8)) == NULL)) | |
d02b48c6 RE |
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 | } | |
c2e4f17c | 429 | DES_set_key_unchecked(&k2,&ks2); |
4579924b | 430 | OPENSSL_cleanse(k2,sizeof(k2)); |
d02b48c6 RE |
431 | } |
432 | else if (longk || flag3) | |
433 | { | |
434 | if (flag3) | |
435 | { | |
c2e4f17c RL |
436 | DES_string_to_2keys(key,&kk,&k2); |
437 | DES_set_key_unchecked(&k2,&ks2); | |
4579924b | 438 | OPENSSL_cleanse(k2,sizeof(k2)); |
d02b48c6 RE |
439 | } |
440 | else | |
c2e4f17c | 441 | DES_string_to_key(key,&kk); |
d02b48c6 RE |
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 | ||
c2e4f17c | 459 | DES_set_key_unchecked(&kk,&ks); |
4579924b RL |
460 | OPENSSL_cleanse(key,sizeof(key)); |
461 | OPENSSL_cleanse(kk,sizeof(kk)); | |
d02b48c6 RE |
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 | { | |
d02b48c6 | 487 | for (i=7-rem; i>0; i--) |
e7f97e2d | 488 | RAND_pseudo_bytes(buf + l++, 1); |
d02b48c6 RE |
489 | buf[l++]=rem; |
490 | ex=1; | |
491 | len+=rem; | |
492 | } | |
493 | else | |
494 | l-=rem; | |
495 | ||
496 | if (cflag) | |
497 | { | |
c2e4f17c | 498 | DES_cbc_cksum(buf,&cksum, |
0cff9334 | 499 | (long)len,&ks,&cksum); |
d02b48c6 RE |
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) | |
c2e4f17c RL |
509 | DES_ecb_encrypt( |
510 | (DES_cblock *)&(buf[i]), | |
511 | (DES_cblock *)&(obuf[i]), | |
0cff9334 | 512 | &ks,do_encrypt); |
d02b48c6 RE |
513 | else if (flag3 && bflag) |
514 | for (i=0; i<l; i+=8) | |
c2e4f17c RL |
515 | DES_ecb2_encrypt( |
516 | (DES_cblock *)&(buf[i]), | |
517 | (DES_cblock *)&(obuf[i]), | |
0cff9334 | 518 | &ks,&ks2,do_encrypt); |
d02b48c6 RE |
519 | else if (flag3 && !bflag) |
520 | { | |
521 | char tmpbuf[8]; | |
522 | ||
523 | if (rem) memcpy(tmpbuf,&(buf[l]), | |
524 | (unsigned int)rem); | |
c2e4f17c RL |
525 | DES_3cbc_encrypt( |
526 | (DES_cblock *)buf,(DES_cblock *)obuf, | |
f947eb31 UM |
527 | (long)l,ks,ks2,&iv, |
528 | &iv2,do_encrypt); | |
d02b48c6 RE |
529 | if (rem) memcpy(&(buf[l]),tmpbuf, |
530 | (unsigned int)rem); | |
531 | } | |
532 | else | |
533 | { | |
c2e4f17c | 534 | DES_cbc_encrypt( |
f947eb31 | 535 | buf,obuf, |
0cff9334 | 536 | (long)l,&ks,&iv,do_encrypt); |
d02b48c6 RE |
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) | |
c2e4f17c RL |
588 | DES_ecb_encrypt( |
589 | (DES_cblock *)&(buf[i]), | |
590 | (DES_cblock *)&(obuf[i]), | |
0cff9334 | 591 | &ks,do_encrypt); |
d02b48c6 RE |
592 | else if (flag3 && bflag) |
593 | for (i=0; i<l; i+=8) | |
c2e4f17c RL |
594 | DES_ecb2_encrypt( |
595 | (DES_cblock *)&(buf[i]), | |
596 | (DES_cblock *)&(obuf[i]), | |
0cff9334 | 597 | &ks,&ks2,do_encrypt); |
d02b48c6 RE |
598 | else if (flag3 && !bflag) |
599 | { | |
c2e4f17c RL |
600 | DES_3cbc_encrypt( |
601 | (DES_cblock *)buf,(DES_cblock *)obuf, | |
f947eb31 UM |
602 | (long)l,ks,ks2,&iv, |
603 | &iv2,do_encrypt); | |
d02b48c6 RE |
604 | } |
605 | else | |
606 | { | |
c2e4f17c | 607 | DES_cbc_encrypt( |
f947eb31 | 608 | buf,obuf, |
0cff9334 | 609 | (long)l,&ks,&iv,do_encrypt); |
d02b48c6 RE |
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; | |
c2e4f17c RL |
634 | if (cflag) DES_cbc_cksum(obuf, |
635 | (DES_cblock *)cksum,(long)l/8*8,&ks, | |
636 | (DES_cblock *)cksum); | |
d02b48c6 RE |
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: | |
4579924b RL |
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)); | |
d02b48c6 RE |
681 | if (Exit) EXIT(Exit); |
682 | } | |
683 | ||
6b691a5c UM |
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) | |
d02b48c6 RE |
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 | ||
6b691a5c | 738 | void uufwriteEnd(FILE *fp) |
d02b48c6 RE |
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 | ||
6b691a5c UM |
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) | |
d02b48c6 RE |
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 | ||
6b691a5c | 827 | int uuencode(unsigned char *in, int num, unsigned char *out) |
d02b48c6 RE |
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 | ||
6b691a5c | 857 | int uudecode(unsigned char *in, int num, unsigned char *out) |
d02b48c6 RE |
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 | } |