a64c654d4d2b37d8893bdbc05636b478932e60c5
[openssl.git] / apps / enc.c
1 /* apps/enc.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3  * All rights reserved.
4  *
5  * This package is an SSL implementation written
6  * by Eric Young (eay@cryptsoft.com).
7  * The implementation was written so as to conform with Netscapes SSL.
8  * 
9  * This library is free for commercial and non-commercial use as long as
10  * the following conditions are aheared to.  The following conditions
11  * apply to all code found in this distribution, be it the RC4, RSA,
12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
13  * included with this distribution is covered by the same copyright terms
14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15  * 
16  * Copyright remains Eric Young's, and as such any Copyright notices in
17  * the code are not to be removed.
18  * If this package is used in a product, Eric Young should be given attribution
19  * as the author of the parts of the library used.
20  * This can be in the form of a textual message at program startup or
21  * in documentation (online or textual) provided with the package.
22  * 
23  * Redistribution and use in source and binary forms, with or without
24  * modification, are permitted provided that the following conditions
25  * are met:
26  * 1. Redistributions of source code must retain the copyright
27  *    notice, this list of conditions and the following disclaimer.
28  * 2. Redistributions in binary form must reproduce the above copyright
29  *    notice, this list of conditions and the following disclaimer in the
30  *    documentation and/or other materials provided with the distribution.
31  * 3. All advertising materials mentioning features or use of this software
32  *    must display the following acknowledgement:
33  *    "This product includes cryptographic software written by
34  *     Eric Young (eay@cryptsoft.com)"
35  *    The word 'cryptographic' can be left out if the rouines from the library
36  *    being used are not cryptographic related :-).
37  * 4. If you include any Windows specific code (or a derivative thereof) from 
38  *    the apps directory (application code) you must include an acknowledgement:
39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40  * 
41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51  * SUCH DAMAGE.
52  * 
53  * The licence and distribution terms for any publically available version or
54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
55  * copied and put under another distribution licence
56  * [including the GNU Public Licence.]
57  */
58
59 #include <stdio.h>
60 #include <stdlib.h>
61 #include <string.h>
62 #include "apps.h"
63 #include <openssl/bio.h>
64 #include <openssl/err.h>
65 #include <openssl/evp.h>
66 #include <openssl/objects.h>
67 #include <openssl/x509.h>
68 #include <openssl/rand.h>
69 #include <openssl/pem.h>
70 #include <openssl/comp.h>
71 #include <ctype.h>
72
73 int set_hex(char *in,unsigned char *out,int size);
74 #undef SIZE
75 #undef BSIZE
76 #undef PROG
77
78 #define SIZE    (512)
79 #define BSIZE   (8*1024)
80 #define PROG    enc_main
81
82 static void show_ciphers(const OBJ_NAME *name,void *bio_)
83         {
84         BIO *bio=bio_;
85         static int n;
86
87         if(!islower((unsigned char)*name->name))
88                 return;
89
90         BIO_printf(bio,"-%-25s",name->name);
91         if(++n == 3)
92                 {
93                 BIO_printf(bio,"\n");
94                 n=0;
95                 }
96         else
97                 BIO_printf(bio," ");
98         }
99
100 int MAIN(int, char **);
101
102 int MAIN(int argc, char **argv)
103         {
104 #ifndef OPENSSL_NO_ENGINE
105         ENGINE *e = NULL;
106 #endif
107         static const char magic[]="Salted__";
108         char mbuf[sizeof magic-1];
109         char *strbuf=NULL;
110         unsigned char *buff=NULL,*bufsize=NULL;
111         int bsize=BSIZE,verbose=0;
112         int ret=1,inl;
113         int nopad = 0;
114         unsigned char key[EVP_MAX_KEY_LENGTH],iv[EVP_MAX_IV_LENGTH];
115         unsigned char salt[PKCS5_SALT_LEN];
116         char *str=NULL, *passarg = NULL, *pass = NULL;
117         char *hkey=NULL,*hiv=NULL,*hsalt = NULL;
118         char *md=NULL;
119         int enc=1,printkey=0,i,base64=0;
120 #ifdef ZLIB
121         int do_zlib=0;
122         BIO *bzl = NULL;
123 #endif
124         int debug=0,olb64=0,nosalt=0;
125         const EVP_CIPHER *cipher=NULL,*c;
126         EVP_CIPHER_CTX *ctx = NULL;
127         char *inf=NULL,*outf=NULL;
128         BIO *in=NULL,*out=NULL,*b64=NULL,*benc=NULL,*rbio=NULL,*wbio=NULL;
129 #define PROG_NAME_SIZE  39
130         char pname[PROG_NAME_SIZE+1];
131 #ifndef OPENSSL_NO_ENGINE
132         char *engine = NULL;
133 #endif
134         const EVP_MD *dgst=NULL;
135
136         apps_startup();
137
138         if (bio_err == NULL)
139                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
140                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
141
142         if (!load_config(bio_err, NULL))
143                 goto end;
144
145         /* first check the program name */
146         program_name(argv[0],pname,sizeof pname);
147         if (strcmp(pname,"base64") == 0)
148                 base64=1;
149 #ifdef ZLIB
150         if (strcmp(pname,"zlib") == 0)
151                 do_zlib=1;
152 #endif
153
154         cipher=EVP_get_cipherbyname(pname);
155 #ifdef ZLIB
156         if (!do_zlib && !base64 && (cipher == NULL)
157                                 && (strcmp(pname,"enc") != 0))
158 #else
159         if (!base64 && (cipher == NULL) && (strcmp(pname,"enc") != 0))
160 #endif
161                 {
162                 BIO_printf(bio_err,"%s is an unknown cipher\n",pname);
163                 goto bad;
164                 }
165
166         argc--;
167         argv++;
168         while (argc >= 1)
169                 {
170                 if      (strcmp(*argv,"-e") == 0)
171                         enc=1;
172                 else if (strcmp(*argv,"-in") == 0)
173                         {
174                         if (--argc < 1) goto bad;
175                         inf= *(++argv);
176                         }
177                 else if (strcmp(*argv,"-out") == 0)
178                         {
179                         if (--argc < 1) goto bad;
180                         outf= *(++argv);
181                         }
182                 else if (strcmp(*argv,"-pass") == 0)
183                         {
184                         if (--argc < 1) goto bad;
185                         passarg= *(++argv);
186                         }
187 #ifndef OPENSSL_NO_ENGINE
188                 else if (strcmp(*argv,"-engine") == 0)
189                         {
190                         if (--argc < 1) goto bad;
191                         engine= *(++argv);
192                         }
193 #endif
194                 else if (strcmp(*argv,"-d") == 0)
195                         enc=0;
196                 else if (strcmp(*argv,"-p") == 0)
197                         printkey=1;
198                 else if (strcmp(*argv,"-v") == 0)
199                         verbose=1;
200                 else if (strcmp(*argv,"-nopad") == 0)
201                         nopad=1;
202                 else if (strcmp(*argv,"-salt") == 0)
203                         nosalt=0;
204                 else if (strcmp(*argv,"-nosalt") == 0)
205                         nosalt=1;
206                 else if (strcmp(*argv,"-debug") == 0)
207                         debug=1;
208                 else if (strcmp(*argv,"-P") == 0)
209                         printkey=2;
210                 else if (strcmp(*argv,"-A") == 0)
211                         olb64=1;
212                 else if (strcmp(*argv,"-a") == 0)
213                         base64=1;
214                 else if (strcmp(*argv,"-base64") == 0)
215                         base64=1;
216 #ifdef ZLIB
217                 else if (strcmp(*argv,"-z") == 0)
218                         do_zlib=1;
219 #endif
220                 else if (strcmp(*argv,"-bufsize") == 0)
221                         {
222                         if (--argc < 1) goto bad;
223                         bufsize=(unsigned char *)*(++argv);
224                         }
225                 else if (strcmp(*argv,"-k") == 0)
226                         {
227                         if (--argc < 1) goto bad;
228                         str= *(++argv);
229                         }
230                 else if (strcmp(*argv,"-kfile") == 0)
231                         {
232                         static char buf[128];
233                         FILE *infile;
234                         char *file;
235
236                         if (--argc < 1) goto bad;
237                         file= *(++argv);
238                         infile=fopen(file,"r");
239                         if (infile == NULL)
240                                 {
241                                 BIO_printf(bio_err,"unable to read key from '%s'\n",
242                                         file);
243                                 goto bad;
244                                 }
245                         buf[0]='\0';
246                         fgets(buf,sizeof buf,infile);
247                         fclose(infile);
248                         i=strlen(buf);
249                         if ((i > 0) &&
250                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
251                                 buf[--i]='\0';
252                         if ((i > 0) &&
253                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
254                                 buf[--i]='\0';
255                         if (i < 1)
256                                 {
257                                 BIO_printf(bio_err,"zero length password\n");
258                                 goto bad;
259                                 }
260                         str=buf;
261                         }
262                 else if (strcmp(*argv,"-K") == 0)
263                         {
264                         if (--argc < 1) goto bad;
265                         hkey= *(++argv);
266                         }
267                 else if (strcmp(*argv,"-S") == 0)
268                         {
269                         if (--argc < 1) goto bad;
270                         hsalt= *(++argv);
271                         }
272                 else if (strcmp(*argv,"-iv") == 0)
273                         {
274                         if (--argc < 1) goto bad;
275                         hiv= *(++argv);
276                         }
277                 else if (strcmp(*argv,"-md") == 0)
278                         {
279                         if (--argc < 1) goto bad;
280                         md= *(++argv);
281                         }
282                 else if ((argv[0][0] == '-') &&
283                         ((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL))
284                         {
285                         cipher=c;
286                         }
287                 else if (strcmp(*argv,"-none") == 0)
288                         cipher=NULL;
289                 else
290                         {
291                         BIO_printf(bio_err,"unknown option '%s'\n",*argv);
292 bad:
293                         BIO_printf(bio_err,"options are\n");
294                         BIO_printf(bio_err,"%-14s input file\n","-in <file>");
295                         BIO_printf(bio_err,"%-14s output file\n","-out <file>");
296                         BIO_printf(bio_err,"%-14s pass phrase source\n","-pass <arg>");
297                         BIO_printf(bio_err,"%-14s encrypt\n","-e");
298                         BIO_printf(bio_err,"%-14s decrypt\n","-d");
299                         BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64");
300                         BIO_printf(bio_err,"%-14s passphrase is the next argument\n","-k");
301                         BIO_printf(bio_err,"%-14s passphrase is the first line of the file argument\n","-kfile");
302                         BIO_printf(bio_err,"%-14s the next argument is the md to use to create a key\n","-md");
303                         BIO_printf(bio_err,"%-14s   from a passphrase.  One of md2, md5, sha or sha1\n","");
304                         BIO_printf(bio_err,"%-14s salt in hex is the next argument\n","-S");
305                         BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv");
306                         BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]");
307                         BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>");
308                         BIO_printf(bio_err,"%-14s disable standard block padding\n","-nopad");
309 #ifndef OPENSSL_NO_ENGINE
310                         BIO_printf(bio_err,"%-14s use engine e, possibly a hardware device.\n","-engine e");
311 #endif
312
313                         BIO_printf(bio_err,"Cipher Types\n");
314                         OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH,
315                                                show_ciphers,
316                                                bio_err);
317                         BIO_printf(bio_err,"\n");
318
319                         goto end;
320                         }
321                 argc--;
322                 argv++;
323                 }
324
325 #ifndef OPENSSL_NO_ENGINE
326         e = setup_engine(bio_err, engine, 0);
327 #endif
328
329         if (md && (dgst=EVP_get_digestbyname(md)) == NULL)
330                 {
331                 BIO_printf(bio_err,"%s is an unsupported message digest type\n",md);
332                 goto end;
333                 }
334
335         if (dgst == NULL)
336                 {
337                 dgst = EVP_md5();
338                 }
339
340         if (bufsize != NULL)
341                 {
342                 unsigned long n;
343
344                 for (n=0; *bufsize; bufsize++)
345                         {
346                         i= *bufsize;
347                         if ((i <= '9') && (i >= '0'))
348                                 n=n*10+i-'0';
349                         else if (i == 'k')
350                                 {
351                                 n*=1024;
352                                 bufsize++;
353                                 break;
354                                 }
355                         }
356                 if (*bufsize != '\0')
357                         {
358                         BIO_printf(bio_err,"invalid 'bufsize' specified.\n");
359                         goto end;
360                         }
361
362                 /* It must be large enough for a base64 encoded line */
363                 if (base64 && n < 80) n=80;
364
365                 bsize=(int)n;
366                 if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize);
367                 }
368
369         strbuf=OPENSSL_malloc(SIZE);
370         buff=(unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize));
371         if ((buff == NULL) || (strbuf == NULL))
372                 {
373                 BIO_printf(bio_err,"OPENSSL_malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize));
374                 goto end;
375                 }
376
377         in=BIO_new(BIO_s_file());
378         out=BIO_new(BIO_s_file());
379         if ((in == NULL) || (out == NULL))
380                 {
381                 ERR_print_errors(bio_err);
382                 goto end;
383                 }
384         if (debug)
385                 {
386                 BIO_set_callback(in,BIO_debug_callback);
387                 BIO_set_callback(out,BIO_debug_callback);
388                 BIO_set_callback_arg(in,(char *)bio_err);
389                 BIO_set_callback_arg(out,(char *)bio_err);
390                 }
391
392         if (inf == NULL)
393                 {
394                 if (bufsize != NULL)
395                         setvbuf(stdin, (char *)NULL, _IONBF, 0);
396                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
397                 }
398         else
399                 {
400                 if (BIO_read_filename(in,inf) <= 0)
401                         {
402                         perror(inf);
403                         goto end;
404                         }
405                 }
406
407         if(!str && passarg) {
408                 if(!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
409                         BIO_printf(bio_err, "Error getting password\n");
410                         goto end;
411                 }
412                 str = pass;
413         }
414
415         if ((str == NULL) && (cipher != NULL) && (hkey == NULL))
416                 {
417                 for (;;)
418                         {
419                         char buf[200];
420
421                         BIO_snprintf(buf,sizeof buf,"enter %s %s password:",
422                                      OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
423                                      (enc)?"encryption":"decryption");
424                         strbuf[0]='\0';
425                         i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc);
426                         if (i == 0)
427                                 {
428                                 if (strbuf[0] == '\0')
429                                         {
430                                         ret=1;
431                                         goto end;
432                                         }
433                                 str=strbuf;
434                                 break;
435                                 }
436                         if (i < 0)
437                                 {
438                                 BIO_printf(bio_err,"bad password read\n");
439                                 goto end;
440                                 }
441                         }
442                 }
443
444
445         if (outf == NULL)
446                 {
447                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
448                 if (bufsize != NULL)
449                         setvbuf(stdout, (char *)NULL, _IONBF, 0);
450 #ifdef OPENSSL_SYS_VMS
451                 {
452                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
453                 out = BIO_push(tmpbio, out);
454                 }
455 #endif
456                 }
457         else
458                 {
459                 if (BIO_write_filename(out,outf) <= 0)
460                         {
461                         perror(outf);
462                         goto end;
463                         }
464                 }
465
466         rbio=in;
467         wbio=out;
468
469 #ifdef ZLIB
470
471         if (do_zlib)
472                 {
473                 if ((bzl=BIO_new(BIO_f_zlib())) == NULL)
474                         goto end;
475                 if (enc)
476                         wbio=BIO_push(bzl,wbio);
477                 else
478                         rbio=BIO_push(bzl,rbio);
479                 }
480 #endif
481
482         if (base64)
483                 {
484                 if ((b64=BIO_new(BIO_f_base64())) == NULL)
485                         goto end;
486                 if (debug)
487                         {
488                         BIO_set_callback(b64,BIO_debug_callback);
489                         BIO_set_callback_arg(b64,(char *)bio_err);
490                         }
491                 if (olb64)
492                         BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL);
493                 if (enc)
494                         wbio=BIO_push(b64,wbio);
495                 else
496                         rbio=BIO_push(b64,rbio);
497                 }
498
499         if (cipher != NULL)
500                 {
501                 /* Note that str is NULL if a key was passed on the command
502                  * line, so we get no salt in that case. Is this a bug?
503                  */
504                 if (str != NULL)
505                         {
506                         /* Salt handling: if encrypting generate a salt and
507                          * write to output BIO. If decrypting read salt from
508                          * input BIO.
509                          */
510                         unsigned char *sptr;
511                         if(nosalt) sptr = NULL;
512                         else {
513                                 if(enc) {
514                                         if(hsalt) {
515                                                 if(!set_hex(hsalt,salt,sizeof salt)) {
516                                                         BIO_printf(bio_err,
517                                                                 "invalid hex salt value\n");
518                                                         goto end;
519                                                 }
520                                         } else if (RAND_pseudo_bytes(salt, sizeof salt) < 0)
521                                                 goto end;
522                                         /* If -P option then don't bother writing */
523                                         if((printkey != 2)
524                                            && (BIO_write(wbio,magic,
525                                                          sizeof magic-1) != sizeof magic-1
526                                                || BIO_write(wbio,
527                                                             (char *)salt,
528                                                             sizeof salt) != sizeof salt)) {
529                                                 BIO_printf(bio_err,"error writing output file\n");
530                                                 goto end;
531                                         }
532                                 } else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf
533                                           || BIO_read(rbio,
534                                                       (unsigned char *)salt,
535                                     sizeof salt) != sizeof salt) {
536                                         BIO_printf(bio_err,"error reading input file\n");
537                                         goto end;
538                                 } else if(memcmp(mbuf,magic,sizeof magic-1)) {
539                                     BIO_printf(bio_err,"bad magic number\n");
540                                     goto end;
541                                 }
542
543                                 sptr = salt;
544                         }
545
546                         EVP_BytesToKey(cipher,dgst,sptr,
547                                 (unsigned char *)str,
548                                 strlen(str),1,key,iv);
549                         /* zero the complete buffer or the string
550                          * passed from the command line
551                          * bug picked up by
552                          * Larry J. Hughes Jr. <hughes@indiana.edu> */
553                         if (str == strbuf)
554                                 OPENSSL_cleanse(str,SIZE);
555                         else
556                                 OPENSSL_cleanse(str,strlen(str));
557                         }
558                 if ((hiv != NULL) && !set_hex(hiv,iv,sizeof iv))
559                         {
560                         BIO_printf(bio_err,"invalid hex iv value\n");
561                         goto end;
562                         }
563                 if ((hiv == NULL) && (str == NULL))
564                         {
565                         /* No IV was explicitly set and no IV was generated
566                          * during EVP_BytesToKey. Hence the IV is undefined,
567                          * making correct decryption impossible. */
568                         BIO_printf(bio_err, "iv undefined\n");
569                         goto end;
570                         }
571                 if ((hkey != NULL) && !set_hex(hkey,key,sizeof key))
572                         {
573                         BIO_printf(bio_err,"invalid hex key value\n");
574                         goto end;
575                         }
576
577                 if ((benc=BIO_new(BIO_f_cipher())) == NULL)
578                         goto end;
579
580                 /* Since we may be changing parameters work on the encryption
581                  * context rather than calling BIO_set_cipher().
582                  */
583
584                 BIO_get_cipher_ctx(benc, &ctx);
585                 if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc))
586                         {
587                         BIO_printf(bio_err, "Error setting cipher %s\n",
588                                 EVP_CIPHER_name(cipher));
589                         ERR_print_errors(bio_err);
590                         goto end;
591                         }
592
593                 if (nopad)
594                         EVP_CIPHER_CTX_set_padding(ctx, 0);
595
596                 if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc))
597                         {
598                         BIO_printf(bio_err, "Error setting cipher %s\n",
599                                 EVP_CIPHER_name(cipher));
600                         ERR_print_errors(bio_err);
601                         goto end;
602                         }
603
604                 if (debug)
605                         {
606                         BIO_set_callback(benc,BIO_debug_callback);
607                         BIO_set_callback_arg(benc,(char *)bio_err);
608                         }
609
610                 if (printkey)
611                         {
612                         if (!nosalt)
613                                 {
614                                 printf("salt=");
615                                 for (i=0; i<(int)sizeof(salt); i++)
616                                         printf("%02X",salt[i]);
617                                 printf("\n");
618                                 }
619                         if (cipher->key_len > 0)
620                                 {
621                                 printf("key=");
622                                 for (i=0; i<cipher->key_len; i++)
623                                         printf("%02X",key[i]);
624                                 printf("\n");
625                                 }
626                         if (cipher->iv_len > 0)
627                                 {
628                                 printf("iv =");
629                                 for (i=0; i<cipher->iv_len; i++)
630                                         printf("%02X",iv[i]);
631                                 printf("\n");
632                                 }
633                         if (printkey == 2)
634                                 {
635                                 ret=0;
636                                 goto end;
637                                 }
638                         }
639                 }
640
641         /* Only encrypt/decrypt as we write the file */
642         if (benc != NULL)
643                 wbio=BIO_push(benc,wbio);
644
645         for (;;)
646                 {
647                 inl=BIO_read(rbio,(char *)buff,bsize);
648                 if (inl <= 0) break;
649                 if (BIO_write(wbio,(char *)buff,inl) != inl)
650                         {
651                         BIO_printf(bio_err,"error writing output file\n");
652                         goto end;
653                         }
654                 }
655         if (!BIO_flush(wbio))
656                 {
657                 BIO_printf(bio_err,"bad decrypt\n");
658                 goto end;
659                 }
660
661         ret=0;
662         if (verbose)
663                 {
664                 BIO_printf(bio_err,"bytes read   :%8ld\n",BIO_number_read(in));
665                 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out));
666                 }
667 end:
668         ERR_print_errors(bio_err);
669         if (strbuf != NULL) OPENSSL_free(strbuf);
670         if (buff != NULL) OPENSSL_free(buff);
671         if (in != NULL) BIO_free(in);
672         if (out != NULL) BIO_free_all(out);
673         if (benc != NULL) BIO_free(benc);
674         if (b64 != NULL) BIO_free(b64);
675 #ifdef ZLIB
676         if (bzl != NULL) BIO_free(bzl);
677 #endif
678         if(pass) OPENSSL_free(pass);
679         apps_shutdown();
680         OPENSSL_EXIT(ret);
681         }
682
683 int set_hex(char *in, unsigned char *out, int size)
684         {
685         int i,n;
686         unsigned char j;
687
688         n=strlen(in);
689         if (n > (size*2))
690                 {
691                 BIO_printf(bio_err,"hex string is too long\n");
692                 return(0);
693                 }
694         memset(out,0,size);
695         for (i=0; i<n; i++)
696                 {
697                 j=(unsigned char)*in;
698                 *(in++)='\0';
699                 if (j == 0) break;
700                 if ((j >= '0') && (j <= '9'))
701                         j-='0';
702                 else if ((j >= 'A') && (j <= 'F'))
703                         j=j-'A'+10;
704                 else if ((j >= 'a') && (j <= 'f'))
705                         j=j-'a'+10;
706                 else
707                         {
708                         BIO_printf(bio_err,"non-hex digit\n");
709                         return(0);
710                         }
711                 if (i&1)
712                         out[i/2]|=j;
713                 else
714                         out[i/2]=(j<<4);
715                 }
716         return(1);
717         }