ca5691dd3346fd34d31391a817d7ed380cc26852
[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 #ifndef NO_MD5
69 #include <openssl/md5.h>
70 #endif
71 #include <openssl/pem.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 int MAIN(int argc, char **argv)
83         {
84         char *strbuf=NULL;
85         unsigned char *buff=NULL,*bufsize=NULL;
86         int bsize=BSIZE,verbose=0;
87         int ret=1,inl;
88         unsigned char key[24],iv[MD5_DIGEST_LENGTH];
89         char *str=NULL;
90         char *hkey=NULL,*hiv=NULL;
91         int enc=1,printkey=0,i,base64=0;
92         int debug=0,olb64=0;
93         const EVP_CIPHER *cipher=NULL,*c;
94         char *inf=NULL,*outf=NULL;
95         BIO *in=NULL,*out=NULL,*b64=NULL,*benc=NULL,*rbio=NULL,*wbio=NULL;
96 #define PROG_NAME_SIZE  16
97         char pname[PROG_NAME_SIZE];
98
99         apps_startup();
100
101         if (bio_err == NULL)
102                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
103                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
104
105         /* first check the program name */
106         program_name(argv[0],pname,PROG_NAME_SIZE);
107         if (strcmp(pname,"base64") == 0)
108                 base64=1;
109
110         cipher=EVP_get_cipherbyname(pname);
111         if (!base64 && (cipher == NULL) && (strcmp(pname,"enc") != 0))
112                 {
113                 BIO_printf(bio_err,"%s is an unknown cipher\n",pname);
114                 goto bad;
115                 }
116
117         argc--;
118         argv++;
119         while (argc >= 1)
120                 {
121                 if      (strcmp(*argv,"-e") == 0)
122                         enc=1;
123                 else if (strcmp(*argv,"-in") == 0)
124                         {
125                         if (--argc < 1) goto bad;
126                         inf= *(++argv);
127                         }
128                 else if (strcmp(*argv,"-out") == 0)
129                         {
130                         if (--argc < 1) goto bad;
131                         outf= *(++argv);
132                         }
133                 else if (strcmp(*argv,"-d") == 0)
134                         enc=0;
135                 else if (strcmp(*argv,"-p") == 0)
136                         printkey=1;
137                 else if (strcmp(*argv,"-v") == 0)
138                         verbose=1;
139                 else if ((strcmp(*argv,"-debug") == 0) ||
140                          (strcmp(*argv,"-d") == 0))
141                         debug=1;
142                 else if (strcmp(*argv,"-P") == 0)
143                         printkey=2;
144                 else if (strcmp(*argv,"-A") == 0)
145                         olb64=1;
146                 else if (strcmp(*argv,"-a") == 0)
147                         base64=1;
148                 else if (strcmp(*argv,"-base64") == 0)
149                         base64=1;
150                 else if (strcmp(*argv,"-bufsize") == 0)
151                         {
152                         if (--argc < 1) goto bad;
153                         bufsize=(unsigned char *)*(++argv);
154                         }
155                 else if (strcmp(*argv,"-k") == 0)
156                         {
157                         if (--argc < 1) goto bad;
158                         str= *(++argv);
159                         }
160                 else if (strcmp(*argv,"-kfile") == 0)
161                         {
162                         static char buf[128];
163                         FILE *infile;
164                         char *file;
165
166                         if (--argc < 1) goto bad;
167                         file= *(++argv);
168                         infile=fopen(file,"r");
169                         if (infile == NULL)
170                                 {
171                                 BIO_printf(bio_err,"unable to read key from '%s'\n",
172                                         file);
173                                 goto bad;
174                                 }
175                         buf[0]='\0';
176                         fgets(buf,128,infile);
177                         fclose(infile);
178                         i=strlen(buf);
179                         if ((i > 0) &&
180                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
181                                 buf[--i]='\0';
182                         if ((i > 0) &&
183                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
184                                 buf[--i]='\0';
185                         if (i < 1)
186                                 {
187                                 BIO_printf(bio_err,"zero length password\n");
188                                 goto bad;
189                                 }
190                         str=buf;
191                         }
192                 else if (strcmp(*argv,"-K") == 0)
193                         {
194                         if (--argc < 1) goto bad;
195                         hkey= *(++argv);
196                         }
197                 else if (strcmp(*argv,"-iv") == 0)
198                         {
199                         if (--argc < 1) goto bad;
200                         hiv= *(++argv);
201                         }
202                 else if ((argv[0][0] == '-') &&
203                         ((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL))
204                         {
205                         cipher=c;
206                         }
207                 else if (strcmp(*argv,"-none") == 0)
208                         cipher=NULL;
209                 else
210                         {
211                         BIO_printf(bio_err,"unknown option '%s'\n",*argv);
212 bad:
213                         BIO_printf(bio_err,"options are\n");
214                         BIO_printf(bio_err,"%-14s input file\n","-in <file>");
215                         BIO_printf(bio_err,"%-14s output fileencrypt\n","-out <file>");
216                         BIO_printf(bio_err,"%-14s encrypt\n","-e");
217                         BIO_printf(bio_err,"%-14s decrypt\n","-d");
218                         BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64");
219                         BIO_printf(bio_err,"%-14s key is the next argument\n","-k");
220                         BIO_printf(bio_err,"%-14s key is the first line of the file argument\n","-kfile");
221                         BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv");
222                         BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]");
223                         BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>");
224
225                         BIO_printf(bio_err,"Cipher Types\n");
226                         BIO_printf(bio_err,"des     : 56 bit key DES encryption\n");
227                         BIO_printf(bio_err,"des_ede :112 bit key ede DES encryption\n");
228                         BIO_printf(bio_err,"des_ede3:168 bit key ede DES encryption\n");
229 #ifndef NO_IDEA
230                         BIO_printf(bio_err,"idea    :128 bit key IDEA encryption\n");
231 #endif
232 #ifndef NO_RC4
233                         BIO_printf(bio_err,"rc2     :128 bit key RC2 encryption\n");
234 #endif
235 #ifndef NO_BLOWFISH
236                         BIO_printf(bio_err,"bf      :128 bit key BlowFish encryption\n");
237 #endif
238 #ifndef NO_RC4
239                         BIO_printf(bio_err," -%-5s :128 bit key RC4 encryption\n",
240                                 LN_rc4);
241 #endif
242
243                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
244                                 LN_des_ecb,LN_des_cbc,
245                                 LN_des_cfb64,LN_des_ofb64);
246                         BIO_printf(bio_err," -%-4s (%s)\n",
247                                 "des", LN_des_cbc);
248
249                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
250                                 LN_des_ede,LN_des_ede_cbc,
251                                 LN_des_ede_cfb64,LN_des_ede_ofb64);
252                         BIO_printf(bio_err," -desx -none\n");
253
254
255                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
256                                 LN_des_ede3,LN_des_ede3_cbc,
257                                 LN_des_ede3_cfb64,LN_des_ede3_ofb64);
258                         BIO_printf(bio_err," -%-4s (%s)\n",
259                                 "des3", LN_des_ede3_cbc);
260
261 #ifndef NO_IDEA
262                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
263                                 LN_idea_ecb, LN_idea_cbc,
264                                 LN_idea_cfb64, LN_idea_ofb64);
265                         BIO_printf(bio_err," -%-4s (%s)\n","idea",LN_idea_cbc);
266 #endif
267 #ifndef NO_RC2
268                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
269                                 LN_rc2_ecb, LN_rc2_cbc,
270                                 LN_rc2_cfb64, LN_rc2_ofb64);
271                         BIO_printf(bio_err," -%-4s (%s)\n","rc2", LN_rc2_cbc);
272 #endif
273 #ifndef NO_BLOWFISH
274                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
275                                 LN_bf_ecb, LN_bf_cbc,
276                                 LN_bf_cfb64, LN_bf_ofb64);
277                         BIO_printf(bio_err," -%-4s (%s)\n","bf", LN_bf_cbc);
278 #endif
279 #ifndef NO_BLOWFISH
280                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
281                                 LN_cast5_ecb, LN_cast5_cbc,
282                                 LN_cast5_cfb64, LN_cast5_ofb64);
283                         BIO_printf(bio_err," -%-4s (%s)\n","cast", LN_cast5_cbc);
284 #endif
285 #ifndef NO_BLOWFISH
286                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
287                                 LN_rc5_ecb, LN_rc5_cbc,
288                                 LN_rc5_cfb64, LN_rc5_ofb64);
289                         BIO_printf(bio_err," -%-4s (%s)\n","rc5", LN_rc5_cbc);
290 #endif
291                         goto end;
292                         }
293                 argc--;
294                 argv++;
295                 }
296
297         if (bufsize != NULL)
298                 {
299                 unsigned long n;
300
301                 for (n=0; *bufsize; bufsize++)
302                         {
303                         i= *bufsize;
304                         if ((i <= '9') && (i >= '0'))
305                                 n=n*10+i-'0';
306                         else if (i == 'k')
307                                 {
308                                 n*=1024;
309                                 bufsize++;
310                                 break;
311                                 }
312                         }
313                 if (*bufsize != '\0')
314                         {
315                         BIO_printf(bio_err,"invalid 'bufsize' specified.\n");
316                         goto end;
317                         }
318
319                 /* It must be large enough for a base64 encoded line */
320                 if (n < 80) n=80;
321
322                 bsize=(int)n;
323                 if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize);
324                 }
325
326         strbuf=Malloc(SIZE);
327         buff=(unsigned char *)Malloc(EVP_ENCODE_LENGTH(bsize));
328         if ((buff == NULL) || (strbuf == NULL))
329                 {
330                 BIO_printf(bio_err,"Malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize));
331                 goto end;
332                 }
333
334         in=BIO_new(BIO_s_file());
335         out=BIO_new(BIO_s_file());
336         if ((in == NULL) || (out == NULL))
337                 {
338                 ERR_print_errors(bio_err);
339                 goto end;
340                 }
341         if (debug)
342                 {
343                 BIO_set_callback(in,BIO_debug_callback);
344                 BIO_set_callback(out,BIO_debug_callback);
345                 BIO_set_callback_arg(in,bio_err);
346                 BIO_set_callback_arg(out,bio_err);
347                 }
348
349         if (inf == NULL)
350                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
351         else
352                 {
353                 if (BIO_read_filename(in,inf) <= 0)
354                         {
355                         perror(inf);
356                         goto end;
357                         }
358                 }
359
360         if ((str == NULL) && (cipher != NULL) && (hkey == NULL))
361                 {
362                 for (;;)
363                         {
364                         char buf[200];
365
366                         sprintf(buf,"enter %s %s password:",
367                                 OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
368                                 (enc)?"encryption":"decryption");
369                         strbuf[0]='\0';
370                         i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc);
371                         if (i == 0)
372                                 {
373                                 if (strbuf[0] == '\0')
374                                         {
375                                         ret=1;
376                                         goto end;
377                                         }
378                                 str=strbuf;
379                                 break;
380                                 }
381                         if (i < 0)
382                                 {
383                                 BIO_printf(bio_err,"bad password read\n");
384                                 goto end;
385                                 }
386                         }
387                 }
388
389         if (cipher != NULL)
390                 {
391                 if (str != NULL)
392                         {
393                         EVP_BytesToKey(cipher,EVP_md5(),NULL,
394                                 (unsigned char *)str,
395                                 strlen(str),1,key,iv);
396                         /* zero the complete buffer or the string
397                          * passed from the command line
398                          * bug picked up by
399                          * Larry J. Hughes Jr. <hughes@indiana.edu> */
400                         if (str == strbuf)
401                                 memset(str,0,SIZE);
402                         else
403                                 memset(str,0,strlen(str));
404                         }
405                 if ((hiv != NULL) && !set_hex(hiv,iv,8))
406                         {
407                         BIO_printf(bio_err,"invalid hex iv value\n");
408                         goto end;
409                         }
410                 if ((hkey != NULL) && !set_hex(hkey,key,24))
411                         {
412                         BIO_printf(bio_err,"invalid hex key value\n");
413                         goto end;
414                         }
415
416                 if ((benc=BIO_new(BIO_f_cipher())) == NULL)
417                         goto end;
418                 BIO_set_cipher(benc,cipher,key,iv,enc);
419                 if (debug)
420                         {
421                         BIO_set_callback(benc,BIO_debug_callback);
422                         BIO_set_callback_arg(benc,bio_err);
423                         }
424
425                 if (printkey)
426                         {
427                         if (cipher->key_len > 0)
428                                 {
429                                 printf("key=");
430                                 for (i=0; i<cipher->key_len; i++)
431                                         printf("%02X",key[i]);
432                                 printf("\n");
433                                 }
434                         if (cipher->iv_len > 0)
435                                 {
436                                 printf("iv =");
437                                 for (i=0; i<cipher->iv_len; i++)
438                                         printf("%02X",iv[i]);
439                                 printf("\n");
440                                 }
441                         if (printkey == 2)
442                                 {
443                                 ret=0;
444                                 goto end;
445                                 }
446                         }
447                 }
448
449
450         if (outf == NULL)
451                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
452         else
453                 {
454                 if (BIO_write_filename(out,outf) <= 0)
455                         {
456                         perror(outf);
457                         goto end;
458                         }
459                 }
460
461         rbio=in;
462         wbio=out;
463
464         if (base64)
465                 {
466                 if ((b64=BIO_new(BIO_f_base64())) == NULL)
467                         goto end;
468                 if (debug)
469                         {
470                         BIO_set_callback(b64,BIO_debug_callback);
471                         BIO_set_callback_arg(b64,bio_err);
472                         }
473                 if (olb64)
474                         BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL);
475                 if (enc)
476                         wbio=BIO_push(b64,wbio);
477                 else
478                         rbio=BIO_push(b64,rbio);
479                 }
480
481         /* Only encrypt/decrypt as we write the file */
482         if (benc != NULL)
483                 wbio=BIO_push(benc,wbio);
484
485         for (;;)
486                 {
487                 inl=BIO_read(rbio,(char *)buff,bsize);
488                 if (inl <= 0) break;
489                 if (BIO_write(wbio,(char *)buff,inl) != inl)
490                         {
491                         BIO_printf(bio_err,"error writing output file\n");
492                         goto end;
493                         }
494                 }
495         if (!BIO_flush(wbio))
496                 {
497                 BIO_printf(bio_err,"bad decrypt\n");
498                 goto end;
499                 }
500
501         ret=0;
502         if (verbose)
503                 {
504                 BIO_printf(bio_err,"bytes read   :%8ld\n",BIO_number_read(in));
505                 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out));
506                 }
507 end:
508         if (strbuf != NULL) Free(strbuf);
509         if (buff != NULL) Free(buff);
510         if (in != NULL) BIO_free(in);
511         if (out != NULL) BIO_free(out);
512         if (benc != NULL) BIO_free(benc);
513         if (b64 != NULL) BIO_free(b64);
514         EXIT(ret);
515         }
516
517 int set_hex(char *in, unsigned char *out, int size)
518         {
519         int i,n;
520         unsigned char j;
521
522         n=strlen(in);
523         if (n > (size*2))
524                 {
525                 BIO_printf(bio_err,"hex string is too long\n");
526                 return(0);
527                 }
528         memset(out,0,size);
529         for (i=0; i<n; i++)
530                 {
531                 j=(unsigned char)*in;
532                 *(in++)='\0';
533                 if (j == 0) break;
534                 if ((j >= '0') && (j <= '9'))
535                         j-='0';
536                 else if ((j >= 'A') && (j <= 'F'))
537                         j=j-'A'+10;
538                 else if ((j >= 'a') && (j <= 'f'))
539                         j=j-'a'+10;
540                 else
541                         {
542                         BIO_printf(bio_err,"non-hex digit\n");
543                         return(0);
544                         }
545                 if (i&1)
546                         out[i/2]|=j;
547                 else
548                         out[i/2]=(j<<4);
549                 }
550         return(1);
551         }