Add -clrext option to 'x509'
[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 (DER 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, void *arg);
88
89 int MAIN(int, char **);
90
91 int MAIN(int argc, char **argv)
92         {
93         DSA *dsa=NULL;
94         int i,badops=0,text=0;
95         BIO *in=NULL,*out=NULL;
96         int informat,outformat,noout=0,C=0,ret=1;
97         char *infile,*outfile,*prog,*inrand=NULL;
98         int numbits= -1,num,genkey=0;
99         int need_rand=0;
100
101         apps_startup();
102
103         if (bio_err == NULL)
104                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
105                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
106
107         infile=NULL;
108         outfile=NULL;
109         informat=FORMAT_PEM;
110         outformat=FORMAT_PEM;
111
112         prog=argv[0];
113         argc--;
114         argv++;
115         while (argc >= 1)
116                 {
117                 if      (strcmp(*argv,"-inform") == 0)
118                         {
119                         if (--argc < 1) goto bad;
120                         informat=str2fmt(*(++argv));
121                         }
122                 else if (strcmp(*argv,"-outform") == 0)
123                         {
124                         if (--argc < 1) goto bad;
125                         outformat=str2fmt(*(++argv));
126                         }
127                 else if (strcmp(*argv,"-in") == 0)
128                         {
129                         if (--argc < 1) goto bad;
130                         infile= *(++argv);
131                         }
132                 else if (strcmp(*argv,"-out") == 0)
133                         {
134                         if (--argc < 1) goto bad;
135                         outfile= *(++argv);
136                         }
137                 else if (strcmp(*argv,"-text") == 0)
138                         text=1;
139                 else if (strcmp(*argv,"-C") == 0)
140                         C=1;
141                 else if (strcmp(*argv,"-genkey") == 0)
142                         {
143                         genkey=1;
144                         need_rand=1;
145                         }
146                 else if (strcmp(*argv,"-rand") == 0)
147                         {
148                         if (--argc < 1) goto bad;
149                         inrand= *(++argv);
150                         need_rand=1;
151                         }
152                 else if (strcmp(*argv,"-noout") == 0)
153                         noout=1;
154                 else if (sscanf(*argv,"%d",&num) == 1)
155                         {
156                         /* generate a key */
157                         numbits=num;
158                         need_rand=1;
159                         }
160                 else
161                         {
162                         BIO_printf(bio_err,"unknown option %s\n",*argv);
163                         badops=1;
164                         break;
165                         }
166                 argc--;
167                 argv++;
168                 }
169
170         if (badops)
171                 {
172 bad:
173                 BIO_printf(bio_err,"%s [options] [bits] <infile >outfile\n",prog);
174                 BIO_printf(bio_err,"where options are\n");
175                 BIO_printf(bio_err," -inform arg   input format - DER or PEM\n");
176                 BIO_printf(bio_err," -outform arg  output format - DER or PEM\n");
177                 BIO_printf(bio_err," -in arg       input file\n");
178                 BIO_printf(bio_err," -out arg      output file\n");
179                 BIO_printf(bio_err," -text         print the key in text\n");
180                 BIO_printf(bio_err," -C            Output C code\n");
181                 BIO_printf(bio_err," -noout        no output\n");
182                 BIO_printf(bio_err," -rand         files to use for random number input\n");
183                 BIO_printf(bio_err," number        number of bits to use for generating private key\n");
184                 goto end;
185                 }
186
187         ERR_load_crypto_strings();
188
189         in=BIO_new(BIO_s_file());
190         out=BIO_new(BIO_s_file());
191         if ((in == NULL) || (out == NULL))
192                 {
193                 ERR_print_errors(bio_err);
194                 goto end;
195                 }
196
197         if (infile == NULL)
198                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
199         else
200                 {
201                 if (BIO_read_filename(in,infile) <= 0)
202                         {
203                         perror(infile);
204                         goto end;
205                         }
206                 }
207         if (outfile == NULL)
208                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
209         else
210                 {
211                 if (BIO_write_filename(out,outfile) <= 0)
212                         {
213                         perror(outfile);
214                         goto end;
215                         }
216                 }
217
218         if (need_rand)
219                 {
220                 app_RAND_load_file(NULL, bio_err, (inrand != NULL));
221                 if (inrand != NULL)
222                         BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
223                                 app_RAND_load_files(inrand));
224                 }
225
226         if (numbits > 0)
227                 {
228                 assert(need_rand);
229                 BIO_printf(bio_err,"Generating DSA parameters, %d bit long prime\n",num);
230                 BIO_printf(bio_err,"This could take some time\n");
231                 dsa=DSA_generate_parameters(num,NULL,0,NULL,NULL, dsa_cb,bio_err);
232                 }
233         else if (informat == FORMAT_ASN1)
234                 dsa=d2i_DSAparams_bio(in,NULL);
235         else if (informat == FORMAT_PEM)
236                 dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL);
237         else
238                 {
239                 BIO_printf(bio_err,"bad input format specified\n");
240                 goto end;
241                 }
242         if (dsa == NULL)
243                 {
244                 BIO_printf(bio_err,"unable to load DSA parameters\n");
245                 ERR_print_errors(bio_err);
246                 goto end;
247                 }
248
249         if (text)
250                 {
251                 DSAparams_print(out,dsa);
252                 }
253         
254         if (C)
255                 {
256                 unsigned char *data;
257                 int l,len,bits_p,bits_q,bits_g;
258
259                 len=BN_num_bytes(dsa->p);
260                 bits_p=BN_num_bits(dsa->p);
261                 bits_q=BN_num_bits(dsa->q);
262                 bits_g=BN_num_bits(dsa->g);
263                 data=(unsigned char *)Malloc(len+20);
264                 if (data == NULL)
265                         {
266                         perror("Malloc");
267                         goto end;
268                         }
269                 l=BN_bn2bin(dsa->p,data);
270                 printf("static unsigned char dsa%d_p[]={",bits_p);
271                 for (i=0; i<l; i++)
272                         {
273                         if ((i%12) == 0) printf("\n\t");
274                         printf("0x%02X,",data[i]);
275                         }
276                 printf("\n\t};\n");
277
278                 l=BN_bn2bin(dsa->q,data);
279                 printf("static unsigned char dsa%d_q[]={",bits_p);
280                 for (i=0; i<l; i++)
281                         {
282                         if ((i%12) == 0) printf("\n\t");
283                         printf("0x%02X,",data[i]);
284                         }
285                 printf("\n\t};\n");
286
287                 l=BN_bn2bin(dsa->g,data);
288                 printf("static unsigned char dsa%d_g[]={",bits_p);
289                 for (i=0; i<l; i++)
290                         {
291                         if ((i%12) == 0) printf("\n\t");
292                         printf("0x%02X,",data[i]);
293                         }
294                 printf("\n\t};\n\n");
295
296                 printf("DSA *get_dsa%d()\n\t{\n",bits_p);
297                 printf("\tDSA *dsa;\n\n");
298                 printf("\tif ((dsa=DSA_new()) == NULL) return(NULL);\n");
299                 printf("\tdsa->p=BN_bin2bn(dsa%d_p,sizeof(dsa%d_p),NULL);\n",
300                         bits_p,bits_p);
301                 printf("\tdsa->q=BN_bin2bn(dsa%d_q,sizeof(dsa%d_q),NULL);\n",
302                         bits_p,bits_p);
303                 printf("\tdsa->g=BN_bin2bn(dsa%d_g,sizeof(dsa%d_g),NULL);\n",
304                         bits_p,bits_p);
305                 printf("\tif ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))\n");
306                 printf("\t\treturn(NULL);\n");
307                 printf("\treturn(dsa);\n\t}\n");
308                 }
309
310
311         if (!noout)
312                 {
313                 if      (outformat == FORMAT_ASN1)
314                         i=i2d_DSAparams_bio(out,dsa);
315                 else if (outformat == FORMAT_PEM)
316                         i=PEM_write_bio_DSAparams(out,dsa);
317                 else    {
318                         BIO_printf(bio_err,"bad output format specified for outfile\n");
319                         goto end;
320                         }
321                 if (!i)
322                         {
323                         BIO_printf(bio_err,"unable to write DSA parameters\n");
324                         ERR_print_errors(bio_err);
325                         goto end;
326                         }
327                 }
328         if (genkey)
329                 {
330                 DSA *dsakey;
331
332                 assert(need_rand);
333                 if ((dsakey=DSAparams_dup(dsa)) == NULL) goto end;
334                 if (!DSA_generate_key(dsakey)) goto end;
335                 if      (outformat == FORMAT_ASN1)
336                         i=i2d_DSAPrivateKey_bio(out,dsakey);
337                 else if (outformat == FORMAT_PEM)
338                         i=PEM_write_bio_DSAPrivateKey(out,dsakey,NULL,NULL,0,NULL,NULL);
339                 else    {
340                         BIO_printf(bio_err,"bad output format specified for outfile\n");
341                         goto end;
342                         }
343                 DSA_free(dsakey);
344                 }
345         if (need_rand)
346                 app_RAND_write_file(NULL, bio_err);
347         ret=0;
348 end:
349         if (in != NULL) BIO_free(in);
350         if (out != NULL) BIO_free(out);
351         if (dsa != NULL) DSA_free(dsa);
352         EXIT(ret);
353         }
354
355 static void MS_CALLBACK dsa_cb(int p, int n, void *arg)
356         {
357         char c='*';
358
359         if (p == 0) c='.';
360         if (p == 1) c='+';
361         if (p == 2) c='*';
362         if (p == 3) c='\n';
363         BIO_write(arg,&c,1);
364         (void)BIO_flush(arg);
365 #ifdef LINT
366         p=n;
367 #endif
368         }
369 #endif