Check EVP_Cipher return values for SSL2
[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 #ifndef OPENSSL_NO_COMP
71 #include <openssl/comp.h>
72 #endif
73 #include <ctype.h>
74
75 int set_hex(char *in,unsigned char *out,int size);
76 #undef SIZE
77 #undef BSIZE
78 #undef PROG
79
80 #define SIZE    (512)
81 #define BSIZE   (8*1024)
82 #define PROG    enc_main
83
84 static void show_ciphers(const OBJ_NAME *name,void *bio_)
85         {
86         BIO *bio=bio_;
87         static int n;
88
89         if(!islower((unsigned char)*name->name))
90                 return;
91
92         BIO_printf(bio,"-%-25s",name->name);
93         if(++n == 3)
94                 {
95                 BIO_printf(bio,"\n");
96                 n=0;
97                 }
98         else
99                 BIO_printf(bio," ");
100         }
101
102 int MAIN(int, char **);
103
104 int MAIN(int argc, char **argv)
105         {
106         static const char magic[]="Salted__";
107         char mbuf[sizeof magic-1];
108         char *strbuf=NULL;
109         unsigned char *buff=NULL,*bufsize=NULL;
110         int bsize=BSIZE,verbose=0;
111         int ret=1,inl;
112         int nopad = 0;
113         unsigned char key[EVP_MAX_KEY_LENGTH],iv[EVP_MAX_IV_LENGTH];
114         unsigned char salt[PKCS5_SALT_LEN];
115         char *str=NULL, *passarg = NULL, *pass = NULL;
116         char *hkey=NULL,*hiv=NULL,*hsalt = NULL;
117         char *md=NULL;
118         int enc=1,printkey=0,i,base64=0;
119 #ifdef ZLIB
120         int do_zlib=0;
121         BIO *bzl = NULL;
122 #endif
123         int debug=0,olb64=0,nosalt=0;
124         const EVP_CIPHER *cipher=NULL,*c;
125         EVP_CIPHER_CTX *ctx = NULL;
126         char *inf=NULL,*outf=NULL;
127         BIO *in=NULL,*out=NULL,*b64=NULL,*benc=NULL,*rbio=NULL,*wbio=NULL;
128 #define PROG_NAME_SIZE  39
129         char pname[PROG_NAME_SIZE+1];
130 #ifndef OPENSSL_NO_ENGINE
131         char *engine = NULL;
132 #endif
133         const EVP_MD *dgst=NULL;
134         int non_fips_allow = 0;
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                         if (!fgets(buf,sizeof buf,infile))
247                                 {
248                                 BIO_printf(bio_err,"unable to read key from '%s'\n",
249                                         file);
250                                 goto bad;
251                                 }
252                         fclose(infile);
253                         i=strlen(buf);
254                         if ((i > 0) &&
255                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
256                                 buf[--i]='\0';
257                         if ((i > 0) &&
258                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
259                                 buf[--i]='\0';
260                         if (i < 1)
261                                 {
262                                 BIO_printf(bio_err,"zero length password\n");
263                                 goto bad;
264                                 }
265                         str=buf;
266                         }
267                 else if (strcmp(*argv,"-K") == 0)
268                         {
269                         if (--argc < 1) goto bad;
270                         hkey= *(++argv);
271                         }
272                 else if (strcmp(*argv,"-S") == 0)
273                         {
274                         if (--argc < 1) goto bad;
275                         hsalt= *(++argv);
276                         }
277                 else if (strcmp(*argv,"-iv") == 0)
278                         {
279                         if (--argc < 1) goto bad;
280                         hiv= *(++argv);
281                         }
282                 else if (strcmp(*argv,"-md") == 0)
283                         {
284                         if (--argc < 1) goto bad;
285                         md= *(++argv);
286                         }
287                 else if (strcmp(*argv,"-non-fips-allow") == 0)
288                         non_fips_allow = 1;
289                 else if ((argv[0][0] == '-') &&
290                         ((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL))
291                         {
292                         cipher=c;
293                         }
294                 else if (strcmp(*argv,"-none") == 0)
295                         cipher=NULL;
296                 else
297                         {
298                         BIO_printf(bio_err,"unknown option '%s'\n",*argv);
299 bad:
300                         BIO_printf(bio_err,"options are\n");
301                         BIO_printf(bio_err,"%-14s input file\n","-in <file>");
302                         BIO_printf(bio_err,"%-14s output file\n","-out <file>");
303                         BIO_printf(bio_err,"%-14s pass phrase source\n","-pass <arg>");
304                         BIO_printf(bio_err,"%-14s encrypt\n","-e");
305                         BIO_printf(bio_err,"%-14s decrypt\n","-d");
306                         BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64");
307                         BIO_printf(bio_err,"%-14s passphrase is the next argument\n","-k");
308                         BIO_printf(bio_err,"%-14s passphrase is the first line of the file argument\n","-kfile");
309                         BIO_printf(bio_err,"%-14s the next argument is the md to use to create a key\n","-md");
310                         BIO_printf(bio_err,"%-14s   from a passphrase.  One of md2, md5, sha or sha1\n","");
311                         BIO_printf(bio_err,"%-14s salt in hex is the next argument\n","-S");
312                         BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv");
313                         BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]");
314                         BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>");
315                         BIO_printf(bio_err,"%-14s disable standard block padding\n","-nopad");
316 #ifndef OPENSSL_NO_ENGINE
317                         BIO_printf(bio_err,"%-14s use engine e, possibly a hardware device.\n","-engine e");
318 #endif
319
320                         BIO_printf(bio_err,"Cipher Types\n");
321                         OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH,
322                                                show_ciphers,
323                                                bio_err);
324                         BIO_printf(bio_err,"\n");
325
326                         goto end;
327                         }
328                 argc--;
329                 argv++;
330                 }
331
332 #ifndef OPENSSL_NO_ENGINE
333         setup_engine(bio_err, engine, 0);
334 #endif
335
336         if (cipher && EVP_CIPHER_flags(cipher) & EVP_CIPH_FLAG_AEAD_CIPHER)
337                 {
338                 BIO_printf(bio_err, "AEAD ciphers not supported by the enc utility\n");
339                 goto end;
340                 }
341
342         if (cipher && (EVP_CIPHER_mode(cipher) == EVP_CIPH_XTS_MODE))
343                 {
344                 BIO_printf(bio_err, "Ciphers in XTS mode are not supported by the enc utility\n");
345                 goto end;
346                 }
347
348         if (md && (dgst=EVP_get_digestbyname(md)) == NULL)
349                 {
350                 BIO_printf(bio_err,"%s is an unsupported message digest type\n",md);
351                 goto end;
352                 }
353
354         if (dgst == NULL)
355                 {
356                 dgst = EVP_md5();
357                 }
358
359         if (bufsize != NULL)
360                 {
361                 unsigned long n;
362
363                 for (n=0; *bufsize; bufsize++)
364                         {
365                         i= *bufsize;
366                         if ((i <= '9') && (i >= '0'))
367                                 n=n*10+i-'0';
368                         else if (i == 'k')
369                                 {
370                                 n*=1024;
371                                 bufsize++;
372                                 break;
373                                 }
374                         }
375                 if (*bufsize != '\0')
376                         {
377                         BIO_printf(bio_err,"invalid 'bufsize' specified.\n");
378                         goto end;
379                         }
380
381                 /* It must be large enough for a base64 encoded line */
382                 if (base64 && n < 80) n=80;
383
384                 bsize=(int)n;
385                 if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize);
386                 }
387
388         strbuf=OPENSSL_malloc(SIZE);
389         buff=(unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize));
390         if ((buff == NULL) || (strbuf == NULL))
391                 {
392                 BIO_printf(bio_err,"OPENSSL_malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize));
393                 goto end;
394                 }
395
396         in=BIO_new(BIO_s_file());
397         out=BIO_new(BIO_s_file());
398         if ((in == NULL) || (out == NULL))
399                 {
400                 ERR_print_errors(bio_err);
401                 goto end;
402                 }
403         if (debug)
404                 {
405                 BIO_set_callback(in,BIO_debug_callback);
406                 BIO_set_callback(out,BIO_debug_callback);
407                 BIO_set_callback_arg(in,(char *)bio_err);
408                 BIO_set_callback_arg(out,(char *)bio_err);
409                 }
410
411         if (inf == NULL)
412                 {
413 #ifndef OPENSSL_NO_SETVBUF_IONBF
414                 if (bufsize != NULL)
415                         setvbuf(stdin, (char *)NULL, _IONBF, 0);
416 #endif /* ndef OPENSSL_NO_SETVBUF_IONBF */
417                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
418                 }
419         else
420                 {
421                 if (BIO_read_filename(in,inf) <= 0)
422                         {
423                         perror(inf);
424                         goto end;
425                         }
426                 }
427
428         if(!str && passarg) {
429                 if(!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
430                         BIO_printf(bio_err, "Error getting password\n");
431                         goto end;
432                 }
433                 str = pass;
434         }
435
436         if ((str == NULL) && (cipher != NULL) && (hkey == NULL))
437                 {
438                 for (;;)
439                         {
440                         char buf[200];
441
442                         BIO_snprintf(buf,sizeof buf,"enter %s %s password:",
443                                      OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
444                                      (enc)?"encryption":"decryption");
445                         strbuf[0]='\0';
446                         i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc);
447                         if (i == 0)
448                                 {
449                                 if (strbuf[0] == '\0')
450                                         {
451                                         ret=1;
452                                         goto end;
453                                         }
454                                 str=strbuf;
455                                 break;
456                                 }
457                         if (i < 0)
458                                 {
459                                 BIO_printf(bio_err,"bad password read\n");
460                                 goto end;
461                                 }
462                         }
463                 }
464
465
466         if (outf == NULL)
467                 {
468                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
469 #ifndef OPENSSL_NO_SETVBUF_IONBF
470                 if (bufsize != NULL)
471                         setvbuf(stdout, (char *)NULL, _IONBF, 0);
472 #endif /* ndef OPENSSL_NO_SETVBUF_IONBF */
473 #ifdef OPENSSL_SYS_VMS
474                 {
475                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
476                 out = BIO_push(tmpbio, out);
477                 }
478 #endif
479                 }
480         else
481                 {
482                 if (BIO_write_filename(out,outf) <= 0)
483                         {
484                         perror(outf);
485                         goto end;
486                         }
487                 }
488
489         rbio=in;
490         wbio=out;
491
492 #ifdef ZLIB
493
494         if (do_zlib)
495                 {
496                 if ((bzl=BIO_new(BIO_f_zlib())) == NULL)
497                         goto end;
498                 if (enc)
499                         wbio=BIO_push(bzl,wbio);
500                 else
501                         rbio=BIO_push(bzl,rbio);
502                 }
503 #endif
504
505         if (base64)
506                 {
507                 if ((b64=BIO_new(BIO_f_base64())) == NULL)
508                         goto end;
509                 if (debug)
510                         {
511                         BIO_set_callback(b64,BIO_debug_callback);
512                         BIO_set_callback_arg(b64,(char *)bio_err);
513                         }
514                 if (olb64)
515                         BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL);
516                 if (enc)
517                         wbio=BIO_push(b64,wbio);
518                 else
519                         rbio=BIO_push(b64,rbio);
520                 }
521
522         if (cipher != NULL)
523                 {
524                 /* Note that str is NULL if a key was passed on the command
525                  * line, so we get no salt in that case. Is this a bug?
526                  */
527                 if (str != NULL)
528                         {
529                         /* Salt handling: if encrypting generate a salt and
530                          * write to output BIO. If decrypting read salt from
531                          * input BIO.
532                          */
533                         unsigned char *sptr;
534                         if(nosalt) sptr = NULL;
535                         else {
536                                 if(enc) {
537                                         if(hsalt) {
538                                                 if(!set_hex(hsalt,salt,sizeof salt)) {
539                                                         BIO_printf(bio_err,
540                                                                 "invalid hex salt value\n");
541                                                         goto end;
542                                                 }
543                                         } else if (RAND_pseudo_bytes(salt, sizeof salt) < 0)
544                                                 goto end;
545                                         /* If -P option then don't bother writing */
546                                         if((printkey != 2)
547                                            && (BIO_write(wbio,magic,
548                                                          sizeof magic-1) != sizeof magic-1
549                                                || BIO_write(wbio,
550                                                             (char *)salt,
551                                                             sizeof salt) != sizeof salt)) {
552                                                 BIO_printf(bio_err,"error writing output file\n");
553                                                 goto end;
554                                         }
555                                 } else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf
556                                           || BIO_read(rbio,
557                                                       (unsigned char *)salt,
558                                     sizeof salt) != sizeof salt) {
559                                         BIO_printf(bio_err,"error reading input file\n");
560                                         goto end;
561                                 } else if(memcmp(mbuf,magic,sizeof magic-1)) {
562                                     BIO_printf(bio_err,"bad magic number\n");
563                                     goto end;
564                                 }
565
566                                 sptr = salt;
567                         }
568
569                         EVP_BytesToKey(cipher,dgst,sptr,
570                                 (unsigned char *)str,
571                                 strlen(str),1,key,iv);
572                         /* zero the complete buffer or the string
573                          * passed from the command line
574                          * bug picked up by
575                          * Larry J. Hughes Jr. <hughes@indiana.edu> */
576                         if (str == strbuf)
577                                 OPENSSL_cleanse(str,SIZE);
578                         else
579                                 OPENSSL_cleanse(str,strlen(str));
580                         }
581                 if ((hiv != NULL) && !set_hex(hiv,iv,sizeof iv))
582                         {
583                         BIO_printf(bio_err,"invalid hex iv value\n");
584                         goto end;
585                         }
586                 if ((hiv == NULL) && (str == NULL)
587                     && EVP_CIPHER_iv_length(cipher) != 0)
588                         {
589                         /* No IV was explicitly set and no IV was generated
590                          * during EVP_BytesToKey. Hence the IV is undefined,
591                          * making correct decryption impossible. */
592                         BIO_printf(bio_err, "iv undefined\n");
593                         goto end;
594                         }
595                 if ((hkey != NULL) && !set_hex(hkey,key,sizeof key))
596                         {
597                         BIO_printf(bio_err,"invalid hex key value\n");
598                         goto end;
599                         }
600
601                 if ((benc=BIO_new(BIO_f_cipher())) == NULL)
602                         goto end;
603
604                 /* Since we may be changing parameters work on the encryption
605                  * context rather than calling BIO_set_cipher().
606                  */
607
608                 BIO_get_cipher_ctx(benc, &ctx);
609
610                 if (non_fips_allow)
611                         EVP_CIPHER_CTX_set_flags(ctx,
612                                 EVP_CIPH_FLAG_NON_FIPS_ALLOW);
613
614                 if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc))
615                         {
616                         BIO_printf(bio_err, "Error setting cipher %s\n",
617                                 EVP_CIPHER_name(cipher));
618                         ERR_print_errors(bio_err);
619                         goto end;
620                         }
621
622                 if (nopad)
623                         EVP_CIPHER_CTX_set_padding(ctx, 0);
624
625                 if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc))
626                         {
627                         BIO_printf(bio_err, "Error setting cipher %s\n",
628                                 EVP_CIPHER_name(cipher));
629                         ERR_print_errors(bio_err);
630                         goto end;
631                         }
632
633                 if (debug)
634                         {
635                         BIO_set_callback(benc,BIO_debug_callback);
636                         BIO_set_callback_arg(benc,(char *)bio_err);
637                         }
638
639                 if (printkey)
640                         {
641                         if (!nosalt)
642                                 {
643                                 printf("salt=");
644                                 for (i=0; i<(int)sizeof(salt); i++)
645                                         printf("%02X",salt[i]);
646                                 printf("\n");
647                                 }
648                         if (cipher->key_len > 0)
649                                 {
650                                 printf("key=");
651                                 for (i=0; i<cipher->key_len; i++)
652                                         printf("%02X",key[i]);
653                                 printf("\n");
654                                 }
655                         if (cipher->iv_len > 0)
656                                 {
657                                 printf("iv =");
658                                 for (i=0; i<cipher->iv_len; i++)
659                                         printf("%02X",iv[i]);
660                                 printf("\n");
661                                 }
662                         if (printkey == 2)
663                                 {
664                                 ret=0;
665                                 goto end;
666                                 }
667                         }
668                 }
669
670         /* Only encrypt/decrypt as we write the file */
671         if (benc != NULL)
672                 wbio=BIO_push(benc,wbio);
673
674         for (;;)
675                 {
676                 inl=BIO_read(rbio,(char *)buff,bsize);
677                 if (inl <= 0) break;
678                 if (BIO_write(wbio,(char *)buff,inl) != inl)
679                         {
680                         BIO_printf(bio_err,"error writing output file\n");
681                         goto end;
682                         }
683                 }
684         if (!BIO_flush(wbio))
685                 {
686                 BIO_printf(bio_err,"bad decrypt\n");
687                 goto end;
688                 }
689
690         ret=0;
691         if (verbose)
692                 {
693                 BIO_printf(bio_err,"bytes read   :%8ld\n",BIO_number_read(in));
694                 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out));
695                 }
696 end:
697         ERR_print_errors(bio_err);
698         if (strbuf != NULL) OPENSSL_free(strbuf);
699         if (buff != NULL) OPENSSL_free(buff);
700         if (in != NULL) BIO_free(in);
701         if (out != NULL) BIO_free_all(out);
702         if (benc != NULL) BIO_free(benc);
703         if (b64 != NULL) BIO_free(b64);
704 #ifdef ZLIB
705         if (bzl != NULL) BIO_free(bzl);
706 #endif
707         if(pass) OPENSSL_free(pass);
708         apps_shutdown();
709         OPENSSL_EXIT(ret);
710         }
711
712 int set_hex(char *in, unsigned char *out, int size)
713         {
714         int i,n;
715         unsigned char j;
716
717         n=strlen(in);
718         if (n > (size*2))
719                 {
720                 BIO_printf(bio_err,"hex string is too long\n");
721                 return(0);
722                 }
723         memset(out,0,size);
724         for (i=0; i<n; i++)
725                 {
726                 j=(unsigned char)*in;
727                 *(in++)='\0';
728                 if (j == 0) break;
729                 if ((j >= '0') && (j <= '9'))
730                         j-='0';
731                 else if ((j >= 'A') && (j <= 'F'))
732                         j=j-'A'+10;
733                 else if ((j >= 'a') && (j <= 'f'))
734                         j=j-'a'+10;
735                 else
736                         {
737                         BIO_printf(bio_err,"non-hex digit\n");
738                         return(0);
739                         }
740                 if (i&1)
741                         out[i/2]|=j;
742                 else
743                         out[i/2]=(j<<4);
744                 }
745         return(1);
746         }