Mark OpenSSL 0.9.7d as dead.
[dragonfly.git] / crypto / openssl-0.9.7e / 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 <ctype.h>
71
72 int set_hex(char *in,unsigned char *out,int size);
73 #undef SIZE
74 #undef BSIZE
75 #undef PROG
76
77 #define SIZE    (512)
78 #define BSIZE   (8*1024)
79 #define PROG    enc_main
80
81 static void show_ciphers(const OBJ_NAME *name,void *bio_)
82         {
83         BIO *bio=bio_;
84         static int n;
85
86         if(!islower((unsigned char)*name->name))
87                 return;
88
89         BIO_printf(bio,"-%-25s",name->name);
90         if(++n == 3)
91                 {
92                 BIO_printf(bio,"\n");
93                 n=0;
94                 }
95         else
96                 BIO_printf(bio," ");
97         }
98
99 int MAIN(int, char **);
100
101 int MAIN(int argc, char **argv)
102         {
103 #ifndef OPENSSL_NO_ENGINE
104         ENGINE *e = NULL;
105 #endif
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         int debug=0,olb64=0,nosalt=0;
120         const EVP_CIPHER *cipher=NULL,*c;
121         char *inf=NULL,*outf=NULL;
122         BIO *in=NULL,*out=NULL,*b64=NULL,*benc=NULL,*rbio=NULL,*wbio=NULL;
123 #define PROG_NAME_SIZE  39
124         char pname[PROG_NAME_SIZE+1];
125 #ifndef OPENSSL_NO_ENGINE
126         char *engine = NULL;
127 #endif
128         const EVP_MD *dgst=NULL;
129
130         apps_startup();
131
132         if (bio_err == NULL)
133                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
134                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
135
136         if (!load_config(bio_err, NULL))
137                 goto end;
138
139         /* first check the program name */
140         program_name(argv[0],pname,sizeof pname);
141         if (strcmp(pname,"base64") == 0)
142                 base64=1;
143
144         cipher=EVP_get_cipherbyname(pname);
145         if (!base64 && (cipher == NULL) && (strcmp(pname,"enc") != 0))
146                 {
147                 BIO_printf(bio_err,"%s is an unknown cipher\n",pname);
148                 goto bad;
149                 }
150
151         argc--;
152         argv++;
153         while (argc >= 1)
154                 {
155                 if      (strcmp(*argv,"-e") == 0)
156                         enc=1;
157                 else if (strcmp(*argv,"-in") == 0)
158                         {
159                         if (--argc < 1) goto bad;
160                         inf= *(++argv);
161                         }
162                 else if (strcmp(*argv,"-out") == 0)
163                         {
164                         if (--argc < 1) goto bad;
165                         outf= *(++argv);
166                         }
167                 else if (strcmp(*argv,"-pass") == 0)
168                         {
169                         if (--argc < 1) goto bad;
170                         passarg= *(++argv);
171                         }
172 #ifndef OPENSSL_NO_ENGINE
173                 else if (strcmp(*argv,"-engine") == 0)
174                         {
175                         if (--argc < 1) goto bad;
176                         engine= *(++argv);
177                         }
178 #endif
179                 else if (strcmp(*argv,"-d") == 0)
180                         enc=0;
181                 else if (strcmp(*argv,"-p") == 0)
182                         printkey=1;
183                 else if (strcmp(*argv,"-v") == 0)
184                         verbose=1;
185                 else if (strcmp(*argv,"-nopad") == 0)
186                         nopad=1;
187                 else if (strcmp(*argv,"-salt") == 0)
188                         nosalt=0;
189                 else if (strcmp(*argv,"-nosalt") == 0)
190                         nosalt=1;
191                 else if (strcmp(*argv,"-debug") == 0)
192                         debug=1;
193                 else if (strcmp(*argv,"-P") == 0)
194                         printkey=2;
195                 else if (strcmp(*argv,"-A") == 0)
196                         olb64=1;
197                 else if (strcmp(*argv,"-a") == 0)
198                         base64=1;
199                 else if (strcmp(*argv,"-base64") == 0)
200                         base64=1;
201                 else if (strcmp(*argv,"-bufsize") == 0)
202                         {
203                         if (--argc < 1) goto bad;
204                         bufsize=(unsigned char *)*(++argv);
205                         }
206                 else if (strcmp(*argv,"-k") == 0)
207                         {
208                         if (--argc < 1) goto bad;
209                         str= *(++argv);
210                         }
211                 else if (strcmp(*argv,"-kfile") == 0)
212                         {
213                         static char buf[128];
214                         FILE *infile;
215                         char *file;
216
217                         if (--argc < 1) goto bad;
218                         file= *(++argv);
219                         infile=fopen(file,"r");
220                         if (infile == NULL)
221                                 {
222                                 BIO_printf(bio_err,"unable to read key from '%s'\n",
223                                         file);
224                                 goto bad;
225                                 }
226                         buf[0]='\0';
227                         fgets(buf,sizeof buf,infile);
228                         fclose(infile);
229                         i=strlen(buf);
230                         if ((i > 0) &&
231                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
232                                 buf[--i]='\0';
233                         if ((i > 0) &&
234                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
235                                 buf[--i]='\0';
236                         if (i < 1)
237                                 {
238                                 BIO_printf(bio_err,"zero length password\n");
239                                 goto bad;
240                                 }
241                         str=buf;
242                         }
243                 else if (strcmp(*argv,"-K") == 0)
244                         {
245                         if (--argc < 1) goto bad;
246                         hkey= *(++argv);
247                         }
248                 else if (strcmp(*argv,"-S") == 0)
249                         {
250                         if (--argc < 1) goto bad;
251                         hsalt= *(++argv);
252                         }
253                 else if (strcmp(*argv,"-iv") == 0)
254                         {
255                         if (--argc < 1) goto bad;
256                         hiv= *(++argv);
257                         }
258                 else if (strcmp(*argv,"-md") == 0)
259                         {
260                         if (--argc < 1) goto bad;
261                         md= *(++argv);
262                         }
263                 else if ((argv[0][0] == '-') &&
264                         ((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL))
265                         {
266                         cipher=c;
267                         }
268                 else if (strcmp(*argv,"-none") == 0)
269                         cipher=NULL;
270                 else
271                         {
272                         BIO_printf(bio_err,"unknown option '%s'\n",*argv);
273 bad:
274                         BIO_printf(bio_err,"options are\n");
275                         BIO_printf(bio_err,"%-14s input file\n","-in <file>");
276                         BIO_printf(bio_err,"%-14s output file\n","-out <file>");
277                         BIO_printf(bio_err,"%-14s pass phrase source\n","-pass <arg>");
278                         BIO_printf(bio_err,"%-14s encrypt\n","-e");
279                         BIO_printf(bio_err,"%-14s decrypt\n","-d");
280                         BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64");
281                         BIO_printf(bio_err,"%-14s passphrase is the next argument\n","-k");
282                         BIO_printf(bio_err,"%-14s passphrase is the first line of the file argument\n","-kfile");
283                         BIO_printf(bio_err,"%-14s the next argument is the md to use to create a key\n","-md");
284                         BIO_printf(bio_err,"%-14s   from a passphrase.  One of md2, md5, sha or sha1\n","");
285                         BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv");
286                         BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]");
287                         BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>");
288 #ifndef OPENSSL_NO_ENGINE
289                         BIO_printf(bio_err,"%-14s use engine e, possibly a hardware device.\n","-engine e");
290 #endif
291
292                         BIO_printf(bio_err,"Cipher Types\n");
293                         OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH,
294                                                show_ciphers,
295                                                bio_err);
296                         BIO_printf(bio_err,"\n");
297
298                         goto end;
299                         }
300                 argc--;
301                 argv++;
302                 }
303
304 #ifndef OPENSSL_NO_ENGINE
305         e = setup_engine(bio_err, engine, 0);
306 #endif
307
308         if (md && (dgst=EVP_get_digestbyname(md)) == NULL)
309                 {
310                 BIO_printf(bio_err,"%s is an unsupported message digest type\n",md);
311                 goto end;
312                 }
313
314         if (dgst == NULL)
315                 {
316                 if (in_FIPS_mode)
317                         dgst = EVP_sha1();
318                 else
319                         dgst = EVP_md5();
320                 }
321
322         if (bufsize != NULL)
323                 {
324                 unsigned long n;
325
326                 for (n=0; *bufsize; bufsize++)
327                         {
328                         i= *bufsize;
329                         if ((i <= '9') && (i >= '0'))
330                                 n=n*10+i-'0';
331                         else if (i == 'k')
332                                 {
333                                 n*=1024;
334                                 bufsize++;
335                                 break;
336                                 }
337                         }
338                 if (*bufsize != '\0')
339                         {
340                         BIO_printf(bio_err,"invalid 'bufsize' specified.\n");
341                         goto end;
342                         }
343
344                 /* It must be large enough for a base64 encoded line */
345                 if (n < 80) n=80;
346
347                 bsize=(int)n;
348                 if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize);
349                 }
350
351         strbuf=OPENSSL_malloc(SIZE);
352         buff=(unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize));
353         if ((buff == NULL) || (strbuf == NULL))
354                 {
355                 BIO_printf(bio_err,"OPENSSL_malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize));
356                 goto end;
357                 }
358
359         in=BIO_new(BIO_s_file());
360         out=BIO_new(BIO_s_file());
361         if ((in == NULL) || (out == NULL))
362                 {
363                 ERR_print_errors(bio_err);
364                 goto end;
365                 }
366         if (debug)
367                 {
368                 BIO_set_callback(in,BIO_debug_callback);
369                 BIO_set_callback(out,BIO_debug_callback);
370                 BIO_set_callback_arg(in,bio_err);
371                 BIO_set_callback_arg(out,bio_err);
372                 }
373
374         if (inf == NULL)
375                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
376         else
377                 {
378                 if (BIO_read_filename(in,inf) <= 0)
379                         {
380                         perror(inf);
381                         goto end;
382                         }
383                 }
384
385         if(!str && passarg) {
386                 if(!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
387                         BIO_printf(bio_err, "Error getting password\n");
388                         goto end;
389                 }
390                 str = pass;
391         }
392
393         if ((str == NULL) && (cipher != NULL) && (hkey == NULL))
394                 {
395                 for (;;)
396                         {
397                         char buf[200];
398
399                         BIO_snprintf(buf,sizeof buf,"enter %s %s password:",
400                                      OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
401                                      (enc)?"encryption":"decryption");
402                         strbuf[0]='\0';
403                         i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc);
404                         if (i == 0)
405                                 {
406                                 if (strbuf[0] == '\0')
407                                         {
408                                         ret=1;
409                                         goto end;
410                                         }
411                                 str=strbuf;
412                                 break;
413                                 }
414                         if (i < 0)
415                                 {
416                                 BIO_printf(bio_err,"bad password read\n");
417                                 goto end;
418                                 }
419                         }
420                 }
421
422
423         if (outf == NULL)
424                 {
425                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
426 #ifdef OPENSSL_SYS_VMS
427                 {
428                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
429                 out = BIO_push(tmpbio, out);
430                 }
431 #endif
432                 }
433         else
434                 {
435                 if (BIO_write_filename(out,outf) <= 0)
436                         {
437                         perror(outf);
438                         goto end;
439                         }
440                 }
441
442         rbio=in;
443         wbio=out;
444
445         if (base64)
446                 {
447                 if ((b64=BIO_new(BIO_f_base64())) == NULL)
448                         goto end;
449                 if (debug)
450                         {
451                         BIO_set_callback(b64,BIO_debug_callback);
452                         BIO_set_callback_arg(b64,bio_err);
453                         }
454                 if (olb64)
455                         BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL);
456                 if (enc)
457                         wbio=BIO_push(b64,wbio);
458                 else
459                         rbio=BIO_push(b64,rbio);
460                 }
461
462         if (cipher != NULL)
463                 {
464                 /* Note that str is NULL if a key was passed on the command
465                  * line, so we get no salt in that case. Is this a bug?
466                  */
467                 if (str != NULL)
468                         {
469                         /* Salt handling: if encrypting generate a salt and
470                          * write to output BIO. If decrypting read salt from
471                          * input BIO.
472                          */
473                         unsigned char *sptr;
474                         if(nosalt) sptr = NULL;
475                         else {
476                                 if(enc) {
477                                         if(hsalt) {
478                                                 if(!set_hex(hsalt,salt,sizeof salt)) {
479                                                         BIO_printf(bio_err,
480                                                                 "invalid hex salt value\n");
481                                                         goto end;
482                                                 }
483                                         } else if (RAND_pseudo_bytes(salt, sizeof salt) < 0)
484                                                 goto end;
485                                         /* If -P option then don't bother writing */
486                                         if((printkey != 2)
487                                            && (BIO_write(wbio,magic,
488                                                          sizeof magic-1) != sizeof magic-1
489                                                || BIO_write(wbio,
490                                                             (char *)salt,
491                                                             sizeof salt) != sizeof salt)) {
492                                                 BIO_printf(bio_err,"error writing output file\n");
493                                                 goto end;
494                                         }
495                                 } else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf
496                                           || BIO_read(rbio,
497                                                       (unsigned char *)salt,
498                                     sizeof salt) != sizeof salt) {
499                                         BIO_printf(bio_err,"error reading input file\n");
500                                         goto end;
501                                 } else if(memcmp(mbuf,magic,sizeof magic-1)) {
502                                     BIO_printf(bio_err,"bad magic number\n");
503                                     goto end;
504                                 }
505
506                                 sptr = salt;
507                         }
508
509                         EVP_BytesToKey(cipher,dgst,sptr,
510                                 (unsigned char *)str,
511                                 strlen(str),1,key,iv);
512                         /* zero the complete buffer or the string
513                          * passed from the command line
514                          * bug picked up by
515                          * Larry J. Hughes Jr. <hughes@indiana.edu> */
516                         if (str == strbuf)
517                                 OPENSSL_cleanse(str,SIZE);
518                         else
519                                 OPENSSL_cleanse(str,strlen(str));
520                         }
521                 if ((hiv != NULL) && !set_hex(hiv,iv,sizeof iv))
522                         {
523                         BIO_printf(bio_err,"invalid hex iv value\n");
524                         goto end;
525                         }
526                 if ((hiv == NULL) && (str == NULL))
527                         {
528                         /* No IV was explicitly set and no IV was generated
529                          * during EVP_BytesToKey. Hence the IV is undefined,
530                          * making correct decryption impossible. */
531                         BIO_printf(bio_err, "iv undefined\n");
532                         goto end;
533                         }
534                 if ((hkey != NULL) && !set_hex(hkey,key,sizeof key))
535                         {
536                         BIO_printf(bio_err,"invalid hex key value\n");
537                         goto end;
538                         }
539
540                 if ((benc=BIO_new(BIO_f_cipher())) == NULL)
541                         goto end;
542                 BIO_set_cipher(benc,cipher,key,iv,enc);
543                 if (nopad)
544                         {
545                         EVP_CIPHER_CTX *ctx;
546                         BIO_get_cipher_ctx(benc, &ctx);
547                         EVP_CIPHER_CTX_set_padding(ctx, 0);
548                         }
549                 if (debug)
550                         {
551                         BIO_set_callback(benc,BIO_debug_callback);
552                         BIO_set_callback_arg(benc,bio_err);
553                         }
554
555                 if (printkey)
556                         {
557                         if (!nosalt)
558                                 {
559                                 printf("salt=");
560                                 for (i=0; i<sizeof salt; i++)
561                                         printf("%02X",salt[i]);
562                                 printf("\n");
563                                 }
564                         if (cipher->key_len > 0)
565                                 {
566                                 printf("key=");
567                                 for (i=0; i<cipher->key_len; i++)
568                                         printf("%02X",key[i]);
569                                 printf("\n");
570                                 }
571                         if (cipher->iv_len > 0)
572                                 {
573                                 printf("iv =");
574                                 for (i=0; i<cipher->iv_len; i++)
575                                         printf("%02X",iv[i]);
576                                 printf("\n");
577                                 }
578                         if (printkey == 2)
579                                 {
580                                 ret=0;
581                                 goto end;
582                                 }
583                         }
584                 }
585
586         /* Only encrypt/decrypt as we write the file */
587         if (benc != NULL)
588                 wbio=BIO_push(benc,wbio);
589
590         for (;;)
591                 {
592                 inl=BIO_read(rbio,(char *)buff,bsize);
593                 if (inl <= 0) break;
594                 if (BIO_write(wbio,(char *)buff,inl) != inl)
595                         {
596                         BIO_printf(bio_err,"error writing output file\n");
597                         goto end;
598                         }
599                 }
600         if (!BIO_flush(wbio))
601                 {
602                 BIO_printf(bio_err,"bad decrypt\n");
603                 goto end;
604                 }
605
606         ret=0;
607         if (verbose)
608                 {
609                 BIO_printf(bio_err,"bytes read   :%8ld\n",BIO_number_read(in));
610                 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out));
611                 }
612 end:
613         ERR_print_errors(bio_err);
614         if (strbuf != NULL) OPENSSL_free(strbuf);
615         if (buff != NULL) OPENSSL_free(buff);
616         if (in != NULL) BIO_free(in);
617         if (out != NULL) BIO_free_all(out);
618         if (benc != NULL) BIO_free(benc);
619         if (b64 != NULL) BIO_free(b64);
620         if(pass) OPENSSL_free(pass);
621         apps_shutdown();
622         OPENSSL_EXIT(ret);
623         }
624
625 int set_hex(char *in, unsigned char *out, int size)
626         {
627         int i,n;
628         unsigned char j;
629
630         n=strlen(in);
631         if (n > (size*2))
632                 {
633                 BIO_printf(bio_err,"hex string is too long\n");
634                 return(0);
635                 }
636         memset(out,0,size);
637         for (i=0; i<n; i++)
638                 {
639                 j=(unsigned char)*in;
640                 *(in++)='\0';
641                 if (j == 0) break;
642                 if ((j >= '0') && (j <= '9'))
643                         j-='0';
644                 else if ((j >= 'A') && (j <= 'F'))
645                         j=j-'A'+10;
646                 else if ((j >= 'a') && (j <= 'f'))
647                         j=j-'a'+10;
648                 else
649                         {
650                         BIO_printf(bio_err,"non-hex digit\n");
651                         return(0);
652                         }
653                 if (i&1)
654                         out[i/2]|=j;
655                 else
656                         out[i/2]=(j<<4);
657                 }
658         return(1);
659         }