New functions and option to use NEW in certificate requests.
[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 #ifndef NO_MD5
70 #include <openssl/md5.h>
71 #endif
72 #include <openssl/pem.h>
73
74 int set_hex(char *in,unsigned char *out,int size);
75 #undef SIZE
76 #undef BSIZE
77 #undef PROG
78
79 #define SIZE    (512)
80 #define BSIZE   (8*1024)
81 #define PROG    enc_main
82
83 int MAIN(int, char **);
84
85 int MAIN(int argc, char **argv)
86         {
87         static const char magic[]="Salted__";
88         char mbuf[8];   /* should be 1 smaller than magic */
89         char *strbuf=NULL;
90         unsigned char *buff=NULL,*bufsize=NULL;
91         int bsize=BSIZE,verbose=0;
92         int ret=1,inl;
93         unsigned char key[24],iv[MD5_DIGEST_LENGTH];
94         unsigned char salt[PKCS5_SALT_LEN];
95         char *str=NULL, *passarg = NULL, *pass = NULL;
96         char *hkey=NULL,*hiv=NULL,*hsalt = NULL;
97         int enc=1,printkey=0,i,base64=0;
98         int debug=0,olb64=0,nosalt=0;
99         const EVP_CIPHER *cipher=NULL,*c;
100         char *inf=NULL,*outf=NULL;
101         BIO *in=NULL,*out=NULL,*b64=NULL,*benc=NULL,*rbio=NULL,*wbio=NULL;
102 #define PROG_NAME_SIZE  16
103         char pname[PROG_NAME_SIZE];
104
105         apps_startup();
106
107         if (bio_err == NULL)
108                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
109                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
110
111         /* first check the program name */
112         program_name(argv[0],pname,PROG_NAME_SIZE);
113         if (strcmp(pname,"base64") == 0)
114                 base64=1;
115
116         cipher=EVP_get_cipherbyname(pname);
117         if (!base64 && (cipher == NULL) && (strcmp(pname,"enc") != 0))
118                 {
119                 BIO_printf(bio_err,"%s is an unknown cipher\n",pname);
120                 goto bad;
121                 }
122
123         argc--;
124         argv++;
125         while (argc >= 1)
126                 {
127                 if      (strcmp(*argv,"-e") == 0)
128                         enc=1;
129                 else if (strcmp(*argv,"-in") == 0)
130                         {
131                         if (--argc < 1) goto bad;
132                         inf= *(++argv);
133                         }
134                 else if (strcmp(*argv,"-out") == 0)
135                         {
136                         if (--argc < 1) goto bad;
137                         outf= *(++argv);
138                         }
139                 else if (strcmp(*argv,"-pass") == 0)
140                         {
141                         if (--argc < 1) goto bad;
142                         passarg= *(++argv);
143                         }
144                 else if (strcmp(*argv,"-d") == 0)
145                         enc=0;
146                 else if (strcmp(*argv,"-p") == 0)
147                         printkey=1;
148                 else if (strcmp(*argv,"-v") == 0)
149                         verbose=1;
150                 else if (strcmp(*argv,"-salt") == 0)
151                         nosalt=0;
152                 else if (strcmp(*argv,"-nosalt") == 0)
153                         nosalt=1;
154                 else if (strcmp(*argv,"-debug") == 0)
155                         debug=1;
156                 else if (strcmp(*argv,"-P") == 0)
157                         printkey=2;
158                 else if (strcmp(*argv,"-A") == 0)
159                         olb64=1;
160                 else if (strcmp(*argv,"-a") == 0)
161                         base64=1;
162                 else if (strcmp(*argv,"-base64") == 0)
163                         base64=1;
164                 else if (strcmp(*argv,"-bufsize") == 0)
165                         {
166                         if (--argc < 1) goto bad;
167                         bufsize=(unsigned char *)*(++argv);
168                         }
169                 else if (strcmp(*argv,"-k") == 0)
170                         {
171                         if (--argc < 1) goto bad;
172                         str= *(++argv);
173                         }
174                 else if (strcmp(*argv,"-kfile") == 0)
175                         {
176                         static char buf[128];
177                         FILE *infile;
178                         char *file;
179
180                         if (--argc < 1) goto bad;
181                         file= *(++argv);
182                         infile=fopen(file,"r");
183                         if (infile == NULL)
184                                 {
185                                 BIO_printf(bio_err,"unable to read key from '%s'\n",
186                                         file);
187                                 goto bad;
188                                 }
189                         buf[0]='\0';
190                         fgets(buf,128,infile);
191                         fclose(infile);
192                         i=strlen(buf);
193                         if ((i > 0) &&
194                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
195                                 buf[--i]='\0';
196                         if ((i > 0) &&
197                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
198                                 buf[--i]='\0';
199                         if (i < 1)
200                                 {
201                                 BIO_printf(bio_err,"zero length password\n");
202                                 goto bad;
203                                 }
204                         str=buf;
205                         }
206                 else if (strcmp(*argv,"-K") == 0)
207                         {
208                         if (--argc < 1) goto bad;
209                         hkey= *(++argv);
210                         }
211                 else if (strcmp(*argv,"-S") == 0)
212                         {
213                         if (--argc < 1) goto bad;
214                         hsalt= *(++argv);
215                         }
216                 else if (strcmp(*argv,"-iv") == 0)
217                         {
218                         if (--argc < 1) goto bad;
219                         hiv= *(++argv);
220                         }
221                 else if ((argv[0][0] == '-') &&
222                         ((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL))
223                         {
224                         cipher=c;
225                         }
226                 else if (strcmp(*argv,"-none") == 0)
227                         cipher=NULL;
228                 else
229                         {
230                         BIO_printf(bio_err,"unknown option '%s'\n",*argv);
231 bad:
232                         BIO_printf(bio_err,"options are\n");
233                         BIO_printf(bio_err,"%-14s input file\n","-in <file>");
234                         BIO_printf(bio_err,"%-14s output file\n","-out <file>");
235                         BIO_printf(bio_err,"%-14s pass phrase source\n","-pass <arg>");
236                         BIO_printf(bio_err,"%-14s encrypt\n","-e");
237                         BIO_printf(bio_err,"%-14s decrypt\n","-d");
238                         BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64");
239                         BIO_printf(bio_err,"%-14s key is the next argument\n","-k");
240                         BIO_printf(bio_err,"%-14s key is the first line of the file argument\n","-kfile");
241                         BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv");
242                         BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]");
243                         BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>");
244
245                         BIO_printf(bio_err,"Cipher Types\n");
246                         BIO_printf(bio_err,"des     : 56 bit key DES encryption\n");
247                         BIO_printf(bio_err,"des_ede :112 bit key ede DES encryption\n");
248                         BIO_printf(bio_err,"des_ede3:168 bit key ede DES encryption\n");
249 #ifndef NO_IDEA
250                         BIO_printf(bio_err,"idea    :128 bit key IDEA encryption\n");
251 #endif
252 #ifndef NO_RC4
253                         BIO_printf(bio_err,"rc2     :128 bit key RC2 encryption\n");
254 #endif
255 #ifndef NO_BF
256                         BIO_printf(bio_err,"bf      :128 bit key Blowfish encryption\n");
257 #endif
258 #ifndef NO_RC4
259                         BIO_printf(bio_err," -%-5s :128 bit key RC4 encryption\n",
260                                 LN_rc4);
261 #endif
262
263                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
264                                 LN_des_ecb,LN_des_cbc,
265                                 LN_des_cfb64,LN_des_ofb64);
266                         BIO_printf(bio_err," -%-4s (%s)\n",
267                                 "des", LN_des_cbc);
268
269                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
270                                 LN_des_ede,LN_des_ede_cbc,
271                                 LN_des_ede_cfb64,LN_des_ede_ofb64);
272                         BIO_printf(bio_err," -desx -none\n");
273
274
275                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
276                                 LN_des_ede3,LN_des_ede3_cbc,
277                                 LN_des_ede3_cfb64,LN_des_ede3_ofb64);
278                         BIO_printf(bio_err," -%-4s (%s)\n",
279                                 "des3", LN_des_ede3_cbc);
280
281 #ifndef NO_IDEA
282                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
283                                 LN_idea_ecb, LN_idea_cbc,
284                                 LN_idea_cfb64, LN_idea_ofb64);
285                         BIO_printf(bio_err," -%-4s (%s)\n","idea",LN_idea_cbc);
286 #endif
287 #ifndef NO_RC2
288                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
289                                 LN_rc2_ecb, LN_rc2_cbc,
290                                 LN_rc2_cfb64, LN_rc2_ofb64);
291                         BIO_printf(bio_err," -%-4s (%s)\n","rc2", LN_rc2_cbc);
292 #endif
293 #ifndef NO_BF
294                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
295                                 LN_bf_ecb, LN_bf_cbc,
296                                 LN_bf_cfb64, LN_bf_ofb64);
297                         BIO_printf(bio_err," -%-4s (%s)\n","bf", LN_bf_cbc);
298 #endif
299 #ifndef NO_CAST
300                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
301                                 LN_cast5_ecb, LN_cast5_cbc,
302                                 LN_cast5_cfb64, LN_cast5_ofb64);
303                         BIO_printf(bio_err," -%-4s (%s)\n","cast", LN_cast5_cbc);
304 #endif
305 #ifndef NO_RC5
306                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
307                                 LN_rc5_ecb, LN_rc5_cbc,
308                                 LN_rc5_cfb64, LN_rc5_ofb64);
309                         BIO_printf(bio_err," -%-4s (%s)\n","rc5", LN_rc5_cbc);
310 #endif
311                         goto end;
312                         }
313                 argc--;
314                 argv++;
315                 }
316
317         if (bufsize != NULL)
318                 {
319                 unsigned long n;
320
321                 for (n=0; *bufsize; bufsize++)
322                         {
323                         i= *bufsize;
324                         if ((i <= '9') && (i >= '0'))
325                                 n=n*10+i-'0';
326                         else if (i == 'k')
327                                 {
328                                 n*=1024;
329                                 bufsize++;
330                                 break;
331                                 }
332                         }
333                 if (*bufsize != '\0')
334                         {
335                         BIO_printf(bio_err,"invalid 'bufsize' specified.\n");
336                         goto end;
337                         }
338
339                 /* It must be large enough for a base64 encoded line */
340                 if (n < 80) n=80;
341
342                 bsize=(int)n;
343                 if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize);
344                 }
345
346         strbuf=Malloc(SIZE);
347         buff=(unsigned char *)Malloc(EVP_ENCODE_LENGTH(bsize));
348         if ((buff == NULL) || (strbuf == NULL))
349                 {
350                 BIO_printf(bio_err,"Malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize));
351                 goto end;
352                 }
353
354         in=BIO_new(BIO_s_file());
355         out=BIO_new(BIO_s_file());
356         if ((in == NULL) || (out == NULL))
357                 {
358                 ERR_print_errors(bio_err);
359                 goto end;
360                 }
361         if (debug)
362                 {
363                 BIO_set_callback(in,BIO_debug_callback);
364                 BIO_set_callback(out,BIO_debug_callback);
365                 BIO_set_callback_arg(in,bio_err);
366                 BIO_set_callback_arg(out,bio_err);
367                 }
368
369         if (inf == NULL)
370                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
371         else
372                 {
373                 if (BIO_read_filename(in,inf) <= 0)
374                         {
375                         perror(inf);
376                         goto end;
377                         }
378                 }
379
380         if(!str && passarg) {
381                 if(!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
382                         BIO_printf(bio_err, "Error getting password\n");
383                         goto end;
384                 }
385                 str = pass;
386         }
387
388         if ((str == NULL) && (cipher != NULL) && (hkey == NULL))
389                 {
390                 for (;;)
391                         {
392                         char buf[200];
393
394                         sprintf(buf,"enter %s %s password:",
395                                 OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
396                                 (enc)?"encryption":"decryption");
397                         strbuf[0]='\0';
398                         i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc);
399                         if (i == 0)
400                                 {
401                                 if (strbuf[0] == '\0')
402                                         {
403                                         ret=1;
404                                         goto end;
405                                         }
406                                 str=strbuf;
407                                 break;
408                                 }
409                         if (i < 0)
410                                 {
411                                 BIO_printf(bio_err,"bad password read\n");
412                                 goto end;
413                                 }
414                         }
415                 }
416
417
418         if (outf == NULL)
419                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
420         else
421                 {
422                 if (BIO_write_filename(out,outf) <= 0)
423                         {
424                         perror(outf);
425                         goto end;
426                         }
427                 }
428
429         rbio=in;
430         wbio=out;
431
432         if (base64)
433                 {
434                 if ((b64=BIO_new(BIO_f_base64())) == NULL)
435                         goto end;
436                 if (debug)
437                         {
438                         BIO_set_callback(b64,BIO_debug_callback);
439                         BIO_set_callback_arg(b64,bio_err);
440                         }
441                 if (olb64)
442                         BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL);
443                 if (enc)
444                         wbio=BIO_push(b64,wbio);
445                 else
446                         rbio=BIO_push(b64,rbio);
447                 }
448
449         if (cipher != NULL)
450                 {
451                 if (str != NULL)
452                         {
453                         /* Salt handling: if encrypting generate a salt and
454                          * write to output BIO. If decrypting read salt from
455                          * input BIO.
456                          */
457                         unsigned char *sptr;
458                         if(nosalt) sptr = NULL;
459                         else {
460                                 if(enc) {
461                                         if(hsalt) {
462                                                 if(!set_hex(hsalt,salt,PKCS5_SALT_LEN)) {
463                                                         BIO_printf(bio_err,
464                                                                 "invalid hex salt value\n");
465                                                         goto end;
466                                                 }
467                                         } else if (RAND_pseudo_bytes(salt, PKCS5_SALT_LEN) < 0)
468                                                 goto end;
469                                         /* If -P option then don't bother writing */
470                                         if((printkey != 2)
471                                            && (BIO_write(wbio,magic,
472                                                          sizeof magic-1) != sizeof magic-1
473                                                || BIO_write(wbio,
474                                                             (char *)salt,
475                                                             PKCS5_SALT_LEN) != PKCS5_SALT_LEN)) {
476                                                 BIO_printf(bio_err,"error writing output file\n");
477                                                 goto end;
478                                         }
479                                 } else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf
480                                           || BIO_read(rbio,
481                                                       (unsigned char *)salt,
482                                     PKCS5_SALT_LEN) != PKCS5_SALT_LEN) {
483                                         BIO_printf(bio_err,"error reading input file\n");
484                                         goto end;
485                                 } else if(memcmp(mbuf,magic,sizeof magic-1)) {
486                                     BIO_printf(bio_err,"bad magic number\n");
487                                     goto end;
488                                 }
489
490                                 sptr = salt;
491                         }
492
493                         EVP_BytesToKey(cipher,EVP_md5(),sptr,
494                                 (unsigned char *)str,
495                                 strlen(str),1,key,iv);
496                         /* zero the complete buffer or the string
497                          * passed from the command line
498                          * bug picked up by
499                          * Larry J. Hughes Jr. <hughes@indiana.edu> */
500                         if (str == strbuf)
501                                 memset(str,0,SIZE);
502                         else
503                                 memset(str,0,strlen(str));
504                         }
505                 if ((hiv != NULL) && !set_hex(hiv,iv,8))
506                         {
507                         BIO_printf(bio_err,"invalid hex iv value\n");
508                         goto end;
509                         }
510                 if ((hkey != NULL) && !set_hex(hkey,key,24))
511                         {
512                         BIO_printf(bio_err,"invalid hex key value\n");
513                         goto end;
514                         }
515
516                 if ((benc=BIO_new(BIO_f_cipher())) == NULL)
517                         goto end;
518                 BIO_set_cipher(benc,cipher,key,iv,enc);
519                 if (debug)
520                         {
521                         BIO_set_callback(benc,BIO_debug_callback);
522                         BIO_set_callback_arg(benc,bio_err);
523                         }
524
525                 if (printkey)
526                         {
527                         if (!nosalt)
528                                 {
529                                 printf("salt=");
530                                 for (i=0; i<PKCS5_SALT_LEN; i++)
531                                         printf("%02X",salt[i]);
532                                 printf("\n");
533                                 }
534                         if (cipher->key_len > 0)
535                                 {
536                                 printf("key=");
537                                 for (i=0; i<cipher->key_len; i++)
538                                         printf("%02X",key[i]);
539                                 printf("\n");
540                                 }
541                         if (cipher->iv_len > 0)
542                                 {
543                                 printf("iv =");
544                                 for (i=0; i<cipher->iv_len; i++)
545                                         printf("%02X",iv[i]);
546                                 printf("\n");
547                                 }
548                         if (printkey == 2)
549                                 {
550                                 ret=0;
551                                 goto end;
552                                 }
553                         }
554                 }
555
556         /* Only encrypt/decrypt as we write the file */
557         if (benc != NULL)
558                 wbio=BIO_push(benc,wbio);
559
560         for (;;)
561                 {
562                 inl=BIO_read(rbio,(char *)buff,bsize);
563                 if (inl <= 0) break;
564                 if (BIO_write(wbio,(char *)buff,inl) != inl)
565                         {
566                         BIO_printf(bio_err,"error writing output file\n");
567                         goto end;
568                         }
569                 }
570         if (!BIO_flush(wbio))
571                 {
572                 BIO_printf(bio_err,"bad decrypt\n");
573                 goto end;
574                 }
575
576         ret=0;
577         if (verbose)
578                 {
579                 BIO_printf(bio_err,"bytes read   :%8ld\n",BIO_number_read(in));
580                 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out));
581                 }
582 end:
583         ERR_print_errors(bio_err);
584         if (strbuf != NULL) Free(strbuf);
585         if (buff != NULL) Free(buff);
586         if (in != NULL) BIO_free(in);
587         if (out != NULL) BIO_free(out);
588         if (benc != NULL) BIO_free(benc);
589         if (b64 != NULL) BIO_free(b64);
590         if(pass) Free(pass);
591         EXIT(ret);
592         }
593
594 int set_hex(char *in, unsigned char *out, int size)
595         {
596         int i,n;
597         unsigned char j;
598
599         n=strlen(in);
600         if (n > (size*2))
601                 {
602                 BIO_printf(bio_err,"hex string is too long\n");
603                 return(0);
604                 }
605         memset(out,0,size);
606         for (i=0; i<n; i++)
607                 {
608                 j=(unsigned char)*in;
609                 *(in++)='\0';
610                 if (j == 0) break;
611                 if ((j >= '0') && (j <= '9'))
612                         j-='0';
613                 else if ((j >= 'A') && (j <= 'F'))
614                         j=j-'A'+10;
615                 else if ((j >= 'a') && (j <= 'f'))
616                         j=j-'a'+10;
617                 else
618                         {
619                         BIO_printf(bio_err,"non-hex digit\n");
620                         return(0);
621                         }
622                 if (i&1)
623                         out[i/2]|=j;
624                 else
625                         out[i/2]=(j<<4);
626                 }
627         return(1);
628         }