RT3543: Remove #ifdef LINT
[openssl.git] / apps / dsaparam.c
1 /* apps/dsaparam.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 <openssl/opensslconf.h>        /* for OPENSSL_NO_DSA */
60 /* Until the key-gen callbacks are modified to use newer prototypes, we allow
61  * deprecated functions for openssl-internal code */
62 #ifdef OPENSSL_NO_DEPRECATED
63 #undef OPENSSL_NO_DEPRECATED
64 #endif
65
66 #ifndef OPENSSL_NO_DSA
67 #include <assert.h>
68 #include <stdio.h>
69 #include <stdlib.h>
70 #include <time.h>
71 #include <string.h>
72 #include "apps.h"
73 #include <openssl/bio.h>
74 #include <openssl/err.h>
75 #include <openssl/bn.h>
76 #include <openssl/dsa.h>
77 #include <openssl/x509.h>
78 #include <openssl/pem.h>
79
80 #undef PROG
81 #define PROG    dsaparam_main
82
83 /* -inform arg  - input format - default PEM (DER or PEM)
84  * -outform arg - output format - default PEM
85  * -in arg      - input file - default stdin
86  * -out arg     - output file - default stdout
87  * -noout
88  * -text
89  * -C
90  * -noout
91  * -genkey
92  *  #ifdef GENCB_TEST
93  * -timebomb n  - interrupt keygen after <n> seconds
94  *  #endif
95  */
96
97 #ifdef GENCB_TEST
98
99 static int stop_keygen_flag = 0;
100
101 static void timebomb_sigalarm(int foo)
102         {
103         stop_keygen_flag = 1;
104         }
105
106 #endif
107
108 static int MS_CALLBACK dsa_cb(int p, int n, BN_GENCB *cb);
109
110 int MAIN(int, char **);
111
112 int MAIN(int argc, char **argv)
113         {
114         DSA *dsa=NULL;
115         int i,badops=0,text=0;
116         BIO *in=NULL,*out=NULL;
117         int informat,outformat,noout=0,C=0,ret=1;
118         char *infile,*outfile,*prog,*inrand=NULL;
119         int numbits= -1,num,genkey=0;
120         int need_rand=0;
121         int non_fips_allow = 0;
122         BN_GENCB *cb = NULL;
123 #ifndef OPENSSL_NO_ENGINE
124         char *engine=NULL;
125 #endif
126 #ifdef GENCB_TEST
127         int timebomb=0;
128 #endif
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         infile=NULL;
140         outfile=NULL;
141         informat=FORMAT_PEM;
142         outformat=FORMAT_PEM;
143
144         prog=argv[0];
145         argc--;
146         argv++;
147         while (argc >= 1)
148                 {
149                 if      (strcmp(*argv,"-inform") == 0)
150                         {
151                         if (--argc < 1) goto bad;
152                         informat=str2fmt(*(++argv));
153                         }
154                 else if (strcmp(*argv,"-outform") == 0)
155                         {
156                         if (--argc < 1) goto bad;
157                         outformat=str2fmt(*(++argv));
158                         }
159                 else if (strcmp(*argv,"-in") == 0)
160                         {
161                         if (--argc < 1) goto bad;
162                         infile= *(++argv);
163                         }
164                 else if (strcmp(*argv,"-out") == 0)
165                         {
166                         if (--argc < 1) goto bad;
167                         outfile= *(++argv);
168                         }
169 #ifndef OPENSSL_NO_ENGINE
170                 else if(strcmp(*argv, "-engine") == 0)
171                         {
172                         if (--argc < 1) goto bad;
173                         engine = *(++argv);
174                         }
175 #endif
176 #ifdef GENCB_TEST
177                 else if(strcmp(*argv, "-timebomb") == 0)
178                         {
179                         if (--argc < 1) goto bad;
180                         timebomb = atoi(*(++argv));
181                         }
182 #endif
183                 else if (strcmp(*argv,"-text") == 0)
184                         text=1;
185                 else if (strcmp(*argv,"-C") == 0)
186                         C=1;
187                 else if (strcmp(*argv,"-genkey") == 0)
188                         {
189                         genkey=1;
190                         need_rand=1;
191                         }
192                 else if (strcmp(*argv,"-rand") == 0)
193                         {
194                         if (--argc < 1) goto bad;
195                         inrand= *(++argv);
196                         need_rand=1;
197                         }
198                 else if (strcmp(*argv,"-noout") == 0)
199                         noout=1;
200                 else if (strcmp(*argv,"-non-fips-allow") == 0)
201                         non_fips_allow = 1;
202                 else if (sscanf(*argv,"%d",&num) == 1)
203                         {
204                         /* generate a key */
205                         numbits=num;
206                         need_rand=1;
207                         }
208                 else
209                         {
210                         BIO_printf(bio_err,"unknown option %s\n",*argv);
211                         badops=1;
212                         break;
213                         }
214                 argc--;
215                 argv++;
216                 }
217
218         if (badops)
219                 {
220 bad:
221                 BIO_printf(bio_err,"%s [options] [bits] <infile >outfile\n",prog);
222                 BIO_printf(bio_err,"where options are\n");
223                 BIO_printf(bio_err," -inform arg   input format - DER or PEM\n");
224                 BIO_printf(bio_err," -outform arg  output format - DER or PEM\n");
225                 BIO_printf(bio_err," -in arg       input file\n");
226                 BIO_printf(bio_err," -out arg      output file\n");
227                 BIO_printf(bio_err," -text         print as text\n");
228                 BIO_printf(bio_err," -C            Output C code\n");
229                 BIO_printf(bio_err," -noout        no output\n");
230                 BIO_printf(bio_err," -genkey       generate a DSA key\n");
231                 BIO_printf(bio_err," -rand         files to use for random number input\n");
232 #ifndef OPENSSL_NO_ENGINE
233                 BIO_printf(bio_err," -engine e     use engine e, possibly a hardware device.\n");
234 #endif
235 #ifdef GENCB_TEST
236                 BIO_printf(bio_err," -timebomb n   interrupt keygen after <n> seconds\n");
237 #endif
238                 BIO_printf(bio_err," number        number of bits to use for generating private key\n");
239                 goto end;
240                 }
241
242         ERR_load_crypto_strings();
243
244         in=BIO_new(BIO_s_file());
245         out=BIO_new(BIO_s_file());
246         if ((in == NULL) || (out == NULL))
247                 {
248                 ERR_print_errors(bio_err);
249                 goto end;
250                 }
251
252         if (infile == NULL)
253                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
254         else
255                 {
256                 if (BIO_read_filename(in,infile) <= 0)
257                         {
258                         perror(infile);
259                         goto end;
260                         }
261                 }
262         if (outfile == NULL)
263                 {
264                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
265 #ifdef OPENSSL_SYS_VMS
266                 {
267                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
268                 out = BIO_push(tmpbio, out);
269                 }
270 #endif
271                 }
272         else
273                 {
274                 if (BIO_write_filename(out,outfile) <= 0)
275                         {
276                         perror(outfile);
277                         goto end;
278                         }
279                 }
280
281 #ifndef OPENSSL_NO_ENGINE
282         setup_engine(bio_err, engine, 0);
283 #endif
284
285         if (need_rand)
286                 {
287                 app_RAND_load_file(NULL, bio_err, (inrand != NULL));
288                 if (inrand != NULL)
289                         BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
290                                 app_RAND_load_files(inrand));
291                 }
292
293         if (numbits > 0)
294                 {
295                 cb = BN_GENCB_new();
296                 if(!cb)
297                         {
298                         BIO_printf(bio_err,"Error allocating BN_GENCB object\n");
299                         goto end;
300                         }
301                 BN_GENCB_set(cb, dsa_cb, bio_err);
302                 assert(need_rand);
303                 dsa = DSA_new();
304                 if(!dsa)
305                         {
306                         BIO_printf(bio_err,"Error allocating DSA object\n");
307                         goto end;
308                         }
309                 if (non_fips_allow)
310                         dsa->flags |= DSA_FLAG_NON_FIPS_ALLOW;
311                 BIO_printf(bio_err,"Generating DSA parameters, %d bit long prime\n",num);
312                 BIO_printf(bio_err,"This could take some time\n");
313 #ifdef GENCB_TEST
314                 if(timebomb > 0)
315         {
316                 struct sigaction act;
317                 act.sa_handler = timebomb_sigalarm;
318                 act.sa_flags = 0;
319                 BIO_printf(bio_err,"(though I'll stop it if not done within %d secs)\n",
320                                 timebomb);
321                 if(sigaction(SIGALRM, &act, NULL) != 0)
322                         {
323                         BIO_printf(bio_err,"Error, couldn't set SIGALRM handler\n");
324                         goto end;
325                         }
326                 alarm(timebomb);
327         }
328 #endif
329                 if(!DSA_generate_parameters_ex(dsa,num,NULL,0,NULL,NULL, cb))
330                         {
331 #ifdef GENCB_TEST
332                         if(stop_keygen_flag)
333                                 {
334                                 BIO_printf(bio_err,"DSA key generation time-stopped\n");
335                                 /* This is an asked-for behaviour! */
336                                 ret = 0;
337                                 goto end;
338                                 }
339 #endif
340                         ERR_print_errors(bio_err);
341                         BIO_printf(bio_err,"Error, DSA key generation failed\n");
342                         goto end;
343                         }
344                 }
345         else if (informat == FORMAT_ASN1)
346                 dsa=d2i_DSAparams_bio(in,NULL);
347         else if (informat == FORMAT_PEM)
348                 dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL);
349         else
350                 {
351                 BIO_printf(bio_err,"bad input format specified\n");
352                 goto end;
353                 }
354         if (dsa == NULL)
355                 {
356                 BIO_printf(bio_err,"unable to load DSA parameters\n");
357                 ERR_print_errors(bio_err);
358                 goto end;
359                 }
360
361         if (text)
362                 {
363                 DSAparams_print(out,dsa);
364                 }
365         
366         if (C)
367                 {
368                 unsigned char *data;
369                 int l,len,bits_p;
370
371                 len=BN_num_bytes(dsa->p);
372                 bits_p=BN_num_bits(dsa->p);
373                 data=(unsigned char *)OPENSSL_malloc(len+20);
374                 if (data == NULL)
375                         {
376                         perror("OPENSSL_malloc");
377                         goto end;
378                         }
379                 l=BN_bn2bin(dsa->p,data);
380                 printf("static unsigned char dsa%d_p[]={",bits_p);
381                 for (i=0; i<l; i++)
382                         {
383                         if ((i%12) == 0) printf("\n\t");
384                         printf("0x%02X,",data[i]);
385                         }
386                 printf("\n\t};\n");
387
388                 l=BN_bn2bin(dsa->q,data);
389                 printf("static unsigned char dsa%d_q[]={",bits_p);
390                 for (i=0; i<l; i++)
391                         {
392                         if ((i%12) == 0) printf("\n\t");
393                         printf("0x%02X,",data[i]);
394                         }
395                 printf("\n\t};\n");
396
397                 l=BN_bn2bin(dsa->g,data);
398                 printf("static unsigned char dsa%d_g[]={",bits_p);
399                 for (i=0; i<l; i++)
400                         {
401                         if ((i%12) == 0) printf("\n\t");
402                         printf("0x%02X,",data[i]);
403                         }
404                 printf("\n\t};\n\n");
405
406                 printf("DSA *get_dsa%d()\n\t{\n",bits_p);
407                 printf("\tDSA *dsa;\n\n");
408                 printf("\tif ((dsa=DSA_new()) == NULL) return(NULL);\n");
409                 printf("\tdsa->p=BN_bin2bn(dsa%d_p,sizeof(dsa%d_p),NULL);\n",
410                         bits_p,bits_p);
411                 printf("\tdsa->q=BN_bin2bn(dsa%d_q,sizeof(dsa%d_q),NULL);\n",
412                         bits_p,bits_p);
413                 printf("\tdsa->g=BN_bin2bn(dsa%d_g,sizeof(dsa%d_g),NULL);\n",
414                         bits_p,bits_p);
415                 printf("\tif ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))\n");
416                 printf("\t\t{ DSA_free(dsa); return(NULL); }\n");
417                 printf("\treturn(dsa);\n\t}\n");
418                 }
419
420
421         if (!noout)
422                 {
423                 if      (outformat == FORMAT_ASN1)
424                         i=i2d_DSAparams_bio(out,dsa);
425                 else if (outformat == FORMAT_PEM)
426                         i=PEM_write_bio_DSAparams(out,dsa);
427                 else    {
428                         BIO_printf(bio_err,"bad output format specified for outfile\n");
429                         goto end;
430                         }
431                 if (!i)
432                         {
433                         BIO_printf(bio_err,"unable to write DSA parameters\n");
434                         ERR_print_errors(bio_err);
435                         goto end;
436                         }
437                 }
438         if (genkey)
439                 {
440                 DSA *dsakey;
441
442                 assert(need_rand);
443                 if ((dsakey=DSAparams_dup(dsa)) == NULL) goto end;
444                 if (non_fips_allow)
445                         dsakey->flags |= DSA_FLAG_NON_FIPS_ALLOW;
446                 if (!DSA_generate_key(dsakey))
447                         {
448                         ERR_print_errors(bio_err);
449                         DSA_free(dsakey);
450                         goto end;
451                         }
452                 if      (outformat == FORMAT_ASN1)
453                         i=i2d_DSAPrivateKey_bio(out,dsakey);
454                 else if (outformat == FORMAT_PEM)
455                         i=PEM_write_bio_DSAPrivateKey(out,dsakey,NULL,NULL,0,NULL,NULL);
456                 else    {
457                         BIO_printf(bio_err,"bad output format specified for outfile\n");
458                         DSA_free(dsakey);
459                         goto end;
460                         }
461                 DSA_free(dsakey);
462                 }
463         if (need_rand)
464                 app_RAND_write_file(NULL, bio_err);
465         ret=0;
466 end:
467         if (cb != NULL) BN_GENCB_free(cb);
468         if (in != NULL) BIO_free(in);
469         if (out != NULL) BIO_free_all(out);
470         if (dsa != NULL) DSA_free(dsa);
471         apps_shutdown();
472         OPENSSL_EXIT(ret);
473         }
474
475 static int MS_CALLBACK dsa_cb(int p, int n, BN_GENCB *cb)
476         {
477         char c='*';
478
479         if (p == 0) c='.';
480         if (p == 1) c='+';
481         if (p == 2) c='*';
482         if (p == 3) c='\n';
483         BIO_write(BN_GENCB_get_arg(cb),&c,1);
484         (void)BIO_flush(BN_GENCB_get_arg(cb));
485 #ifdef GENCB_TEST
486         if(stop_keygen_flag)
487                 return 0;
488 #endif
489         return 1;
490         }
491 #else /* !OPENSSL_NO_DSA */
492
493 # if PEDANTIC
494 static void *dummy=&dummy;
495 # endif
496
497 #endif