Don't compile heartbeat test code on Windows (for now).
[openssl.git] / apps / dhparam.c
1 /* apps/dhparam.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  * Copyright (c) 1998-2000 The OpenSSL Project.  All rights reserved.
60  *
61  * Redistribution and use in source and binary forms, with or without
62  * modification, are permitted provided that the following conditions
63  * are met:
64  *
65  * 1. Redistributions of source code must retain the above copyright
66  *    notice, this list of conditions and the following disclaimer. 
67  *
68  * 2. Redistributions in binary form must reproduce the above copyright
69  *    notice, this list of conditions and the following disclaimer in
70  *    the documentation and/or other materials provided with the
71  *    distribution.
72  *
73  * 3. All advertising materials mentioning features or use of this
74  *    software must display the following acknowledgment:
75  *    "This product includes software developed by the OpenSSL Project
76  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77  *
78  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79  *    endorse or promote products derived from this software without
80  *    prior written permission. For written permission, please contact
81  *    openssl-core@openssl.org.
82  *
83  * 5. Products derived from this software may not be called "OpenSSL"
84  *    nor may "OpenSSL" appear in their names without prior written
85  *    permission of the OpenSSL Project.
86  *
87  * 6. Redistributions of any form whatsoever must retain the following
88  *    acknowledgment:
89  *    "This product includes software developed by the OpenSSL Project
90  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91  *
92  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
96  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103  * OF THE POSSIBILITY OF SUCH DAMAGE.
104  * ====================================================================
105  *
106  * This product includes cryptographic software written by Eric Young
107  * (eay@cryptsoft.com).  This product includes software written by Tim
108  * Hudson (tjh@cryptsoft.com).
109  *
110  */
111
112 #include <openssl/opensslconf.h>        /* for OPENSSL_NO_DH */
113 #ifndef OPENSSL_NO_DH
114 #include <stdio.h>
115 #include <stdlib.h>
116 #include <time.h>
117 #include <string.h>
118 #include "apps.h"
119 #include <openssl/bio.h>
120 #include <openssl/err.h>
121 #include <openssl/bn.h>
122 #include <openssl/dh.h>
123 #include <openssl/x509.h>
124 #include <openssl/pem.h>
125
126 #ifndef OPENSSL_NO_DSA
127 #include <openssl/dsa.h>
128 #endif
129
130 #undef PROG
131 #define PROG    dhparam_main
132
133 #define DEFBITS 512
134
135 /* -inform arg  - input format - default PEM (DER or PEM)
136  * -outform arg - output format - default PEM
137  * -in arg      - input file - default stdin
138  * -out arg     - output file - default stdout
139  * -dsaparam  - read or generate DSA parameters, convert to DH
140  * -check       - check the parameters are ok
141  * -noout
142  * -text
143  * -C
144  */
145
146 static int MS_CALLBACK dh_cb(int p, int n, BN_GENCB *cb);
147
148 int MAIN(int, char **);
149
150 int MAIN(int argc, char **argv)
151         {
152         DH *dh=NULL;
153         int i,badops=0,text=0;
154 #ifndef OPENSSL_NO_DSA
155         int dsaparam=0;
156 #endif
157         BIO *in=NULL,*out=NULL;
158         int informat,outformat,check=0,noout=0,C=0,ret=1;
159         char *infile,*outfile,*prog;
160         char *inrand=NULL;
161 #ifndef OPENSSL_NO_ENGINE
162         char *engine=NULL;
163 #endif
164         int num = 0, g = 0;
165
166         apps_startup();
167
168         if (bio_err == NULL)
169                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
170                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
171
172         if (!load_config(bio_err, NULL))
173                 goto end;
174
175         infile=NULL;
176         outfile=NULL;
177         informat=FORMAT_PEM;
178         outformat=FORMAT_PEM;
179
180         prog=argv[0];
181         argc--;
182         argv++;
183         while (argc >= 1)
184                 {
185                 if      (strcmp(*argv,"-inform") == 0)
186                         {
187                         if (--argc < 1) goto bad;
188                         informat=str2fmt(*(++argv));
189                         }
190                 else if (strcmp(*argv,"-outform") == 0)
191                         {
192                         if (--argc < 1) goto bad;
193                         outformat=str2fmt(*(++argv));
194                         }
195                 else if (strcmp(*argv,"-in") == 0)
196                         {
197                         if (--argc < 1) goto bad;
198                         infile= *(++argv);
199                         }
200                 else if (strcmp(*argv,"-out") == 0)
201                         {
202                         if (--argc < 1) goto bad;
203                         outfile= *(++argv);
204                         }
205 #ifndef OPENSSL_NO_ENGINE
206                 else if (strcmp(*argv,"-engine") == 0)
207                         {
208                         if (--argc < 1) goto bad;
209                         engine= *(++argv);
210                         }
211 #endif
212                 else if (strcmp(*argv,"-check") == 0)
213                         check=1;
214                 else if (strcmp(*argv,"-text") == 0)
215                         text=1;
216 #ifndef OPENSSL_NO_DSA
217                 else if (strcmp(*argv,"-dsaparam") == 0)
218                         dsaparam=1;
219 #endif
220                 else if (strcmp(*argv,"-C") == 0)
221                         C=1;
222                 else if (strcmp(*argv,"-noout") == 0)
223                         noout=1;
224                 else if (strcmp(*argv,"-2") == 0)
225                         g=2;
226                 else if (strcmp(*argv,"-5") == 0)
227                         g=5;
228                 else if (strcmp(*argv,"-rand") == 0)
229                         {
230                         if (--argc < 1) goto bad;
231                         inrand= *(++argv);
232                         }
233                 else if (((sscanf(*argv,"%d",&num) == 0) || (num <= 0)))
234                         goto bad;
235                 argv++;
236                 argc--;
237                 }
238
239         if (badops)
240                 {
241 bad:
242                 BIO_printf(bio_err,"%s [options] [numbits]\n",prog);
243                 BIO_printf(bio_err,"where options are\n");
244                 BIO_printf(bio_err," -inform arg   input format - one of DER PEM\n");
245                 BIO_printf(bio_err," -outform arg  output format - one of DER PEM\n");
246                 BIO_printf(bio_err," -in arg       input file\n");
247                 BIO_printf(bio_err," -out arg      output file\n");
248 #ifndef OPENSSL_NO_DSA
249                 BIO_printf(bio_err," -dsaparam     read or generate DSA parameters, convert to DH\n");
250 #endif
251                 BIO_printf(bio_err," -check        check the DH parameters\n");
252                 BIO_printf(bio_err," -text         print a text form of the DH parameters\n");
253                 BIO_printf(bio_err," -C            Output C code\n");
254                 BIO_printf(bio_err," -2            generate parameters using  2 as the generator value\n");
255                 BIO_printf(bio_err," -5            generate parameters using  5 as the generator value\n");
256                 BIO_printf(bio_err," numbits       number of bits in to generate (default 512)\n");
257 #ifndef OPENSSL_NO_ENGINE
258                 BIO_printf(bio_err," -engine e     use engine e, possibly a hardware device.\n");
259 #endif
260                 BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
261                 BIO_printf(bio_err,"               - load the file (or the files in the directory) into\n");
262                 BIO_printf(bio_err,"               the random number generator\n");
263                 BIO_printf(bio_err," -noout        no output\n");
264                 goto end;
265                 }
266
267         ERR_load_crypto_strings();
268
269 #ifndef OPENSSL_NO_ENGINE
270         setup_engine(bio_err, engine, 0);
271 #endif
272
273         if (g && !num)
274                 num = DEFBITS;
275
276 #ifndef OPENSSL_NO_DSA
277         if (dsaparam)
278                 {
279                 if (g)
280                         {
281                         BIO_printf(bio_err, "generator may not be chosen for DSA parameters\n");
282                         goto end;
283                         }
284                 }
285         else
286 #endif
287                 {
288                 /* DH parameters */
289                 if (num && !g)
290                         g = 2;
291                 }
292
293         if(num) {
294
295                 BN_GENCB cb;
296                 BN_GENCB_set(&cb, dh_cb, bio_err);
297                 if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL)
298                         {
299                         BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
300                         }
301                 if (inrand != NULL)
302                         BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
303                                 app_RAND_load_files(inrand));
304
305 #ifndef OPENSSL_NO_DSA
306                 if (dsaparam)
307                         {
308                         DSA *dsa = DSA_new();
309                         
310                         BIO_printf(bio_err,"Generating DSA parameters, %d bit long prime\n",num);
311                         if(!dsa || !DSA_generate_parameters_ex(dsa, num,
312                                                 NULL, 0, NULL, NULL, &cb))
313                                 {
314                                 if(dsa) DSA_free(dsa);
315                                 ERR_print_errors(bio_err);
316                                 goto end;
317                                 }
318
319                         dh = DSA_dup_DH(dsa);
320                         DSA_free(dsa);
321                         if (dh == NULL)
322                                 {
323                                 ERR_print_errors(bio_err);
324                                 goto end;
325                                 }
326                         }
327                 else
328 #endif
329                         {
330                         dh = DH_new();
331                         BIO_printf(bio_err,"Generating DH parameters, %d bit long safe prime, generator %d\n",num,g);
332                         BIO_printf(bio_err,"This is going to take a long time\n");
333                         if(!dh || !DH_generate_parameters_ex(dh, num, g, &cb))
334                                 {
335                                 ERR_print_errors(bio_err);
336                                 goto end;
337                                 }
338                         }
339
340                 app_RAND_write_file(NULL, bio_err);
341         } else {
342
343                 in=BIO_new(BIO_s_file());
344                 if (in == NULL)
345                         {
346                         ERR_print_errors(bio_err);
347                         goto end;
348                         }
349                 if (infile == NULL)
350                         BIO_set_fp(in,stdin,BIO_NOCLOSE);
351                 else
352                         {
353                         if (BIO_read_filename(in,infile) <= 0)
354                                 {
355                                 perror(infile);
356                                 goto end;
357                                 }
358                         }
359
360                 if      (informat != FORMAT_ASN1 && informat != FORMAT_PEM)
361                         {
362                         BIO_printf(bio_err,"bad input format specified\n");
363                         goto end;
364                         }
365
366 #ifndef OPENSSL_NO_DSA
367                 if (dsaparam)
368                         {
369                         DSA *dsa;
370                         
371                         if (informat == FORMAT_ASN1)
372                                 dsa=d2i_DSAparams_bio(in,NULL);
373                         else /* informat == FORMAT_PEM */
374                                 dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL);
375                         
376                         if (dsa == NULL)
377                                 {
378                                 BIO_printf(bio_err,"unable to load DSA parameters\n");
379                                 ERR_print_errors(bio_err);
380                                 goto end;
381                                 }
382                         
383                         dh = DSA_dup_DH(dsa);
384                         DSA_free(dsa);
385                         if (dh == NULL)
386                                 {
387                                 ERR_print_errors(bio_err);
388                                 goto end;
389                                 }
390                         }
391                 else
392 #endif
393                         {
394                         if (informat == FORMAT_ASN1)
395                                 dh=d2i_DHparams_bio(in,NULL);
396                         else /* informat == FORMAT_PEM */
397                                 dh=PEM_read_bio_DHparams(in,NULL,NULL,NULL);
398                         
399                         if (dh == NULL)
400                                 {
401                                 BIO_printf(bio_err,"unable to load DH parameters\n");
402                                 ERR_print_errors(bio_err);
403                                 goto end;
404                                 }
405                         }
406                 
407                 /* dh != NULL */
408         }
409         
410         out=BIO_new(BIO_s_file());
411         if (out == NULL)
412                 {
413                 ERR_print_errors(bio_err);
414                 goto end;
415                 }
416         if (outfile == NULL)
417                 {
418                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
419 #ifdef OPENSSL_SYS_VMS
420                 {
421                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
422                 out = BIO_push(tmpbio, out);
423                 }
424 #endif
425                 }
426         else
427                 {
428                 if (BIO_write_filename(out,outfile) <= 0)
429                         {
430                         perror(outfile);
431                         goto end;
432                         }
433                 }
434
435
436         if (text)
437                 {
438                 DHparams_print(out,dh);
439                 }
440         
441         if (check)
442                 {
443                 if (!DH_check(dh,&i))
444                         {
445                         ERR_print_errors(bio_err);
446                         goto end;
447                         }
448                 if (i & DH_CHECK_P_NOT_PRIME)
449                         printf("p value is not prime\n");
450                 if (i & DH_CHECK_P_NOT_SAFE_PRIME)
451                         printf("p value is not a safe prime\n");
452                 if (i & DH_UNABLE_TO_CHECK_GENERATOR)
453                         printf("unable to check the generator value\n");
454                 if (i & DH_NOT_SUITABLE_GENERATOR)
455                         printf("the g value is not a generator\n");
456                 if (i == 0)
457                         printf("DH parameters appear to be ok.\n");
458                 }
459         if (C)
460                 {
461                 unsigned char *data;
462                 int len,l,bits;
463
464                 len=BN_num_bytes(dh->p);
465                 bits=BN_num_bits(dh->p);
466                 data=(unsigned char *)OPENSSL_malloc(len);
467                 if (data == NULL)
468                         {
469                         perror("OPENSSL_malloc");
470                         goto end;
471                         }
472                 printf("#ifndef HEADER_DH_H\n"
473                        "#include <openssl/dh.h>\n"
474                        "#endif\n");
475                 printf("DH *get_dh%d()\n\t{\n",bits);
476
477                 l=BN_bn2bin(dh->p,data);
478                 printf("\tstatic unsigned char dh%d_p[]={",bits);
479                 for (i=0; i<l; i++)
480                         {
481                         if ((i%12) == 0) printf("\n\t\t");
482                         printf("0x%02X,",data[i]);
483                         }
484                 printf("\n\t\t};\n");
485
486                 l=BN_bn2bin(dh->g,data);
487                 printf("\tstatic unsigned char dh%d_g[]={",bits);
488                 for (i=0; i<l; i++)
489                         {
490                         if ((i%12) == 0) printf("\n\t\t");
491                         printf("0x%02X,",data[i]);
492                         }
493                 printf("\n\t\t};\n");
494
495                 printf("\tDH *dh;\n\n");
496                 printf("\tif ((dh=DH_new()) == NULL) return(NULL);\n");
497                 printf("\tdh->p=BN_bin2bn(dh%d_p,sizeof(dh%d_p),NULL);\n",
498                         bits,bits);
499                 printf("\tdh->g=BN_bin2bn(dh%d_g,sizeof(dh%d_g),NULL);\n",
500                         bits,bits);
501                 printf("\tif ((dh->p == NULL) || (dh->g == NULL))\n");
502                 printf("\t\t{ DH_free(dh); return(NULL); }\n");
503                 if (dh->length)
504                         printf("\tdh->length = %ld;\n", dh->length);
505                 printf("\treturn(dh);\n\t}\n");
506                 OPENSSL_free(data);
507                 }
508
509
510         if (!noout)
511                 {
512                 if      (outformat == FORMAT_ASN1)
513                         i=i2d_DHparams_bio(out,dh);
514                 else if (outformat == FORMAT_PEM)
515                         {
516                         if (dh->q)
517                                 i=PEM_write_bio_DHxparams(out,dh);
518                         else
519                                 i=PEM_write_bio_DHparams(out,dh);
520                         }
521                 else    {
522                         BIO_printf(bio_err,"bad output format specified for outfile\n");
523                         goto end;
524                         }
525                 if (!i)
526                         {
527                         BIO_printf(bio_err,"unable to write DH parameters\n");
528                         ERR_print_errors(bio_err);
529                         goto end;
530                         }
531                 }
532         ret=0;
533 end:
534         if (in != NULL) BIO_free(in);
535         if (out != NULL) BIO_free_all(out);
536         if (dh != NULL) DH_free(dh);
537         apps_shutdown();
538         OPENSSL_EXIT(ret);
539         }
540
541 /* dh_cb is identical to dsa_cb in apps/dsaparam.c */
542 static int MS_CALLBACK dh_cb(int p, int n, BN_GENCB *cb)
543         {
544         char c='*';
545
546         if (p == 0) c='.';
547         if (p == 1) c='+';
548         if (p == 2) c='*';
549         if (p == 3) c='\n';
550         BIO_write(cb->arg,&c,1);
551         (void)BIO_flush(cb->arg);
552 #ifdef LINT
553         p=n;
554 #endif
555         return 1;
556         }
557
558 #else /* !OPENSSL_NO_DH */
559
560 # if PEDANTIC
561 static void *dummy=&dummy;
562 # endif
563
564 #endif