Modify verify code to handle self signed certificates.
[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 #ifndef NO_DSA
60 #include <assert.h>
61 #include <stdio.h>
62 #include <stdlib.h>
63 #include <time.h>
64 #include <string.h>
65 #include "apps.h"
66 #include <openssl/bio.h>
67 #include <openssl/err.h>
68 #include <openssl/bn.h>
69 #include <openssl/dsa.h>
70 #include <openssl/x509.h>
71 #include <openssl/pem.h>
72
73 #undef PROG
74 #define PROG    dsaparam_main
75
76 /* -inform arg  - input format - default PEM (one of DER, TXT or PEM)
77  * -outform arg - output format - default PEM
78  * -in arg      - input file - default stdin
79  * -out arg     - output file - default stdout
80  * -noout
81  * -text
82  * -C
83  * -noout
84  * -genkey
85  */
86
87 static void MS_CALLBACK dsa_cb(int p, int n, char *arg);
88 int MAIN(int argc, char **argv)
89         {
90         DSA *dsa=NULL;
91         int i,badops=0,text=0;
92         BIO *in=NULL,*out=NULL;
93         int informat,outformat,noout=0,C=0,ret=1;
94         char *infile,*outfile,*prog,*inrand=NULL;
95         int numbits= -1,num,genkey=0;
96         int need_rand=0;
97
98         apps_startup();
99
100         if (bio_err == NULL)
101                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
102                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
103
104         infile=NULL;
105         outfile=NULL;
106         informat=FORMAT_PEM;
107         outformat=FORMAT_PEM;
108
109         prog=argv[0];
110         argc--;
111         argv++;
112         while (argc >= 1)
113                 {
114                 if      (strcmp(*argv,"-inform") == 0)
115                         {
116                         if (--argc < 1) goto bad;
117                         informat=str2fmt(*(++argv));
118                         }
119                 else if (strcmp(*argv,"-outform") == 0)
120                         {
121                         if (--argc < 1) goto bad;
122                         outformat=str2fmt(*(++argv));
123                         }
124                 else if (strcmp(*argv,"-in") == 0)
125                         {
126                         if (--argc < 1) goto bad;
127                         infile= *(++argv);
128                         }
129                 else if (strcmp(*argv,"-out") == 0)
130                         {
131                         if (--argc < 1) goto bad;
132                         outfile= *(++argv);
133                         }
134                 else if (strcmp(*argv,"-text") == 0)
135                         text=1;
136                 else if (strcmp(*argv,"-C") == 0)
137                         C=1;
138                 else if (strcmp(*argv,"-genkey") == 0)
139                         {
140                         genkey=1;
141                         need_rand=1;
142                         }
143                 else if (strcmp(*argv,"-rand") == 0)
144                         {
145                         if (--argc < 1) goto bad;
146                         inrand= *(++argv);
147                         need_rand=1;
148                         }
149                 else if (strcmp(*argv,"-noout") == 0)
150                         noout=1;
151                 else if (sscanf(*argv,"%d",&num) == 1)
152                         {
153                         /* generate a key */
154                         numbits=num;
155                         need_rand=1;
156                         }
157                 else
158                         {
159                         BIO_printf(bio_err,"unknown option %s\n",*argv);
160                         badops=1;
161                         break;
162                         }
163                 argc--;
164                 argv++;
165                 }
166
167         if (badops)
168                 {
169 bad:
170                 BIO_printf(bio_err,"%s [options] [bits] <infile >outfile\n",prog);
171                 BIO_printf(bio_err,"where options are\n");
172                 BIO_printf(bio_err," -inform arg   input format - DER or PEM\n");
173                 BIO_printf(bio_err," -outform arg  output format - DER or PEM\n");
174                 BIO_printf(bio_err," -in arg       input file\n");
175                 BIO_printf(bio_err," -out arg      output file\n");
176                 BIO_printf(bio_err," -text         print the key in text\n");
177                 BIO_printf(bio_err," -C            Output C code\n");
178                 BIO_printf(bio_err," -noout        no output\n");
179                 BIO_printf(bio_err," -rand         files to use for random number input\n");
180                 BIO_printf(bio_err," number        number of bits to use for generating private key\n");
181                 goto end;
182                 }
183
184         ERR_load_crypto_strings();
185
186         in=BIO_new(BIO_s_file());
187         out=BIO_new(BIO_s_file());
188         if ((in == NULL) || (out == NULL))
189                 {
190                 ERR_print_errors(bio_err);
191                 goto end;
192                 }
193
194         if (infile == NULL)
195                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
196         else
197                 {
198                 if (BIO_read_filename(in,infile) <= 0)
199                         {
200                         perror(infile);
201                         goto end;
202                         }
203                 }
204         if (outfile == NULL)
205                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
206         else
207                 {
208                 if (BIO_write_filename(out,outfile) <= 0)
209                         {
210                         perror(outfile);
211                         goto end;
212                         }
213                 }
214
215         if (need_rand)
216                 {
217                 app_RAND_load_file(NULL, bio_err, (inrand != NULL));
218                 if (inrand != NULL)
219                         BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
220                                 app_RAND_load_files(inrand));
221                 }
222
223         if (numbits > 0)
224                 {
225                 assert(need_rand);
226                 BIO_printf(bio_err,"Generating DSA parameters, %d bit long prime\n",num);
227                 BIO_printf(bio_err,"This could take some time\n");
228                 dsa=DSA_generate_parameters(num,NULL,0,NULL,NULL,
229                         dsa_cb,(char *)bio_err);
230                 }
231         else if (informat == FORMAT_ASN1)
232                 dsa=d2i_DSAparams_bio(in,NULL);
233         else if (informat == FORMAT_PEM)
234                 dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL);
235         else
236                 {
237                 BIO_printf(bio_err,"bad input format specified\n");
238                 goto end;
239                 }
240         if (dsa == NULL)
241                 {
242                 BIO_printf(bio_err,"unable to load DSA parameters\n");
243                 ERR_print_errors(bio_err);
244                 goto end;
245                 }
246
247         if (text)
248                 {
249                 DSAparams_print(out,dsa);
250                 }
251         
252         if (C)
253                 {
254                 unsigned char *data;
255                 int l,len,bits_p,bits_q,bits_g;
256
257                 len=BN_num_bytes(dsa->p);
258                 bits_p=BN_num_bits(dsa->p);
259                 bits_q=BN_num_bits(dsa->q);
260                 bits_g=BN_num_bits(dsa->g);
261                 data=(unsigned char *)Malloc(len+20);
262                 if (data == NULL)
263                         {
264                         perror("Malloc");
265                         goto end;
266                         }
267                 l=BN_bn2bin(dsa->p,data);
268                 printf("static unsigned char dsa%d_p[]={",bits_p);
269                 for (i=0; i<l; i++)
270                         {
271                         if ((i%12) == 0) printf("\n\t");
272                         printf("0x%02X,",data[i]);
273                         }
274                 printf("\n\t};\n");
275
276                 l=BN_bn2bin(dsa->q,data);
277                 printf("static unsigned char dsa%d_q[]={",bits_p);
278                 for (i=0; i<l; i++)
279                         {
280                         if ((i%12) == 0) printf("\n\t");
281                         printf("0x%02X,",data[i]);
282                         }
283                 printf("\n\t};\n");
284
285                 l=BN_bn2bin(dsa->g,data);
286                 printf("static unsigned char dsa%d_g[]={",bits_p);
287                 for (i=0; i<l; i++)
288                         {
289                         if ((i%12) == 0) printf("\n\t");
290                         printf("0x%02X,",data[i]);
291                         }
292                 printf("\n\t};\n\n");
293
294                 printf("DSA *get_dsa%d()\n\t{\n",bits_p);
295                 printf("\tDSA *dsa;\n\n");
296                 printf("\tif ((dsa=DSA_new()) == NULL) return(NULL);\n");
297                 printf("\tdsa->p=BN_bin2bn(dsa%d_p,sizeof(dsa%d_p),NULL);\n",
298                         bits_p,bits_p);
299                 printf("\tdsa->q=BN_bin2bn(dsa%d_q,sizeof(dsa%d_q),NULL);\n",
300                         bits_p,bits_p);
301                 printf("\tdsa->g=BN_bin2bn(dsa%d_g,sizeof(dsa%d_g),NULL);\n",
302                         bits_p,bits_p);
303                 printf("\tif ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))\n");
304                 printf("\t\treturn(NULL);\n");
305                 printf("\treturn(dsa);\n\t}\n");
306                 }
307
308
309         if (!noout)
310                 {
311                 if      (outformat == FORMAT_ASN1)
312                         i=i2d_DSAparams_bio(out,dsa);
313                 else if (outformat == FORMAT_PEM)
314                         i=PEM_write_bio_DSAparams(out,dsa);
315                 else    {
316                         BIO_printf(bio_err,"bad output format specified for outfile\n");
317                         goto end;
318                         }
319                 if (!i)
320                         {
321                         BIO_printf(bio_err,"unable to write DSA paramaters\n");
322                         ERR_print_errors(bio_err);
323                         goto end;
324                         }
325                 }
326         if (genkey)
327                 {
328                 DSA *dsakey;
329
330                 assert(need_rand);
331                 if ((dsakey=DSAparams_dup(dsa)) == NULL) goto end;
332                 if (!DSA_generate_key(dsakey)) goto end;
333                 if      (outformat == FORMAT_ASN1)
334                         i=i2d_DSAPrivateKey_bio(out,dsakey);
335                 else if (outformat == FORMAT_PEM)
336                         i=PEM_write_bio_DSAPrivateKey(out,dsakey,NULL,NULL,0,NULL,NULL);
337                 else    {
338                         BIO_printf(bio_err,"bad output format specified for outfile\n");
339                         goto end;
340                         }
341                 DSA_free(dsakey);
342                 }
343         if (need_rand)
344                 app_RAND_write_file(NULL, bio_err);
345         ret=0;
346 end:
347         if (in != NULL) BIO_free(in);
348         if (out != NULL) BIO_free(out);
349         if (dsa != NULL) DSA_free(dsa);
350         EXIT(ret);
351         }
352
353 static void MS_CALLBACK dsa_cb(int p, int n, char *arg)
354         {
355         char c='*';
356
357         if (p == 0) c='.';
358         if (p == 1) c='+';
359         if (p == 2) c='*';
360         if (p == 3) c='\n';
361         BIO_write((BIO *)arg,&c,1);
362         (void)BIO_flush((BIO *)arg);
363 #ifdef LINT
364         p=n;
365 #endif
366         }
367 #endif