Fix email address delete code.
[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 OPENSSL_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         ENGINE *e = NULL;
94         DSA *dsa=NULL;
95         int i,badops=0,text=0;
96         BIO *in=NULL,*out=NULL;
97         int informat,outformat,noout=0,C=0,ret=1;
98         char *infile,*outfile,*prog,*inrand=NULL;
99         int numbits= -1,num,genkey=0;
100         int need_rand=0;
101         char *engine=NULL;
102
103         apps_startup();
104
105         if (bio_err == NULL)
106                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
107                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
108
109         infile=NULL;
110         outfile=NULL;
111         informat=FORMAT_PEM;
112         outformat=FORMAT_PEM;
113
114         prog=argv[0];
115         argc--;
116         argv++;
117         while (argc >= 1)
118                 {
119                 if      (strcmp(*argv,"-inform") == 0)
120                         {
121                         if (--argc < 1) goto bad;
122                         informat=str2fmt(*(++argv));
123                         }
124                 else if (strcmp(*argv,"-outform") == 0)
125                         {
126                         if (--argc < 1) goto bad;
127                         outformat=str2fmt(*(++argv));
128                         }
129                 else if (strcmp(*argv,"-in") == 0)
130                         {
131                         if (--argc < 1) goto bad;
132                         infile= *(++argv);
133                         }
134                 else if (strcmp(*argv,"-out") == 0)
135                         {
136                         if (--argc < 1) goto bad;
137                         outfile= *(++argv);
138                         }
139                 else if(strcmp(*argv, "-engine") == 0)
140                         {
141                         if (--argc < 1) goto bad;
142                         engine = *(++argv);
143                         }
144                 else if (strcmp(*argv,"-text") == 0)
145                         text=1;
146                 else if (strcmp(*argv,"-C") == 0)
147                         C=1;
148                 else if (strcmp(*argv,"-genkey") == 0)
149                         {
150                         genkey=1;
151                         need_rand=1;
152                         }
153                 else if (strcmp(*argv,"-rand") == 0)
154                         {
155                         if (--argc < 1) goto bad;
156                         inrand= *(++argv);
157                         need_rand=1;
158                         }
159                 else if (strcmp(*argv,"-noout") == 0)
160                         noout=1;
161                 else if (sscanf(*argv,"%d",&num) == 1)
162                         {
163                         /* generate a key */
164                         numbits=num;
165                         need_rand=1;
166                         }
167                 else
168                         {
169                         BIO_printf(bio_err,"unknown option %s\n",*argv);
170                         badops=1;
171                         break;
172                         }
173                 argc--;
174                 argv++;
175                 }
176
177         if (badops)
178                 {
179 bad:
180                 BIO_printf(bio_err,"%s [options] [bits] <infile >outfile\n",prog);
181                 BIO_printf(bio_err,"where options are\n");
182                 BIO_printf(bio_err," -inform arg   input format - DER or PEM\n");
183                 BIO_printf(bio_err," -outform arg  output format - DER or PEM\n");
184                 BIO_printf(bio_err," -in arg       input file\n");
185                 BIO_printf(bio_err," -out arg      output file\n");
186                 BIO_printf(bio_err," -text         print the key in text\n");
187                 BIO_printf(bio_err," -C            Output C code\n");
188                 BIO_printf(bio_err," -noout        no output\n");
189                 BIO_printf(bio_err," -rand         files to use for random number input\n");
190                 BIO_printf(bio_err," -engine e     use engine e, possibly a hardware device.\n");
191                 BIO_printf(bio_err," number        number of bits to use for generating private key\n");
192                 goto end;
193                 }
194
195         ERR_load_crypto_strings();
196
197         in=BIO_new(BIO_s_file());
198         out=BIO_new(BIO_s_file());
199         if ((in == NULL) || (out == NULL))
200                 {
201                 ERR_print_errors(bio_err);
202                 goto end;
203                 }
204
205         if (infile == NULL)
206                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
207         else
208                 {
209                 if (BIO_read_filename(in,infile) <= 0)
210                         {
211                         perror(infile);
212                         goto end;
213                         }
214                 }
215         if (outfile == NULL)
216                 {
217                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
218 #ifdef OPENSSL_SYS_VMS
219                 {
220                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
221                 out = BIO_push(tmpbio, out);
222                 }
223 #endif
224                 }
225         else
226                 {
227                 if (BIO_write_filename(out,outfile) <= 0)
228                         {
229                         perror(outfile);
230                         goto end;
231                         }
232                 }
233
234         e = setup_engine(bio_err, engine, 0);
235
236         if (need_rand)
237                 {
238                 app_RAND_load_file(NULL, bio_err, (inrand != NULL));
239                 if (inrand != NULL)
240                         BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
241                                 app_RAND_load_files(inrand));
242                 }
243
244         if (numbits > 0)
245                 {
246                 assert(need_rand);
247                 BIO_printf(bio_err,"Generating DSA parameters, %d bit long prime\n",num);
248                 BIO_printf(bio_err,"This could take some time\n");
249                 dsa=DSA_generate_parameters(num,NULL,0,NULL,NULL, dsa_cb,bio_err);
250                 }
251         else if (informat == FORMAT_ASN1)
252                 dsa=d2i_DSAparams_bio(in,NULL);
253         else if (informat == FORMAT_PEM)
254                 dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL);
255         else
256                 {
257                 BIO_printf(bio_err,"bad input format specified\n");
258                 goto end;
259                 }
260         if (dsa == NULL)
261                 {
262                 BIO_printf(bio_err,"unable to load DSA parameters\n");
263                 ERR_print_errors(bio_err);
264                 goto end;
265                 }
266
267         if (text)
268                 {
269                 DSAparams_print(out,dsa);
270                 }
271         
272         if (C)
273                 {
274                 unsigned char *data;
275                 int l,len,bits_p,bits_q,bits_g;
276
277                 len=BN_num_bytes(dsa->p);
278                 bits_p=BN_num_bits(dsa->p);
279                 bits_q=BN_num_bits(dsa->q);
280                 bits_g=BN_num_bits(dsa->g);
281                 data=(unsigned char *)OPENSSL_malloc(len+20);
282                 if (data == NULL)
283                         {
284                         perror("OPENSSL_malloc");
285                         goto end;
286                         }
287                 l=BN_bn2bin(dsa->p,data);
288                 printf("static unsigned char dsa%d_p[]={",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");
295
296                 l=BN_bn2bin(dsa->q,data);
297                 printf("static unsigned char dsa%d_q[]={",bits_p);
298                 for (i=0; i<l; i++)
299                         {
300                         if ((i%12) == 0) printf("\n\t");
301                         printf("0x%02X,",data[i]);
302                         }
303                 printf("\n\t};\n");
304
305                 l=BN_bn2bin(dsa->g,data);
306                 printf("static unsigned char dsa%d_g[]={",bits_p);
307                 for (i=0; i<l; i++)
308                         {
309                         if ((i%12) == 0) printf("\n\t");
310                         printf("0x%02X,",data[i]);
311                         }
312                 printf("\n\t};\n\n");
313
314                 printf("DSA *get_dsa%d()\n\t{\n",bits_p);
315                 printf("\tDSA *dsa;\n\n");
316                 printf("\tif ((dsa=DSA_new()) == NULL) return(NULL);\n");
317                 printf("\tdsa->p=BN_bin2bn(dsa%d_p,sizeof(dsa%d_p),NULL);\n",
318                         bits_p,bits_p);
319                 printf("\tdsa->q=BN_bin2bn(dsa%d_q,sizeof(dsa%d_q),NULL);\n",
320                         bits_p,bits_p);
321                 printf("\tdsa->g=BN_bin2bn(dsa%d_g,sizeof(dsa%d_g),NULL);\n",
322                         bits_p,bits_p);
323                 printf("\tif ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))\n");
324                 printf("\t\t{ DSA_free(dsa); return(NULL); }\n");
325                 printf("\treturn(dsa);\n\t}\n");
326                 }
327
328
329         if (!noout)
330                 {
331                 if      (outformat == FORMAT_ASN1)
332                         i=i2d_DSAparams_bio(out,dsa);
333                 else if (outformat == FORMAT_PEM)
334                         i=PEM_write_bio_DSAparams(out,dsa);
335                 else    {
336                         BIO_printf(bio_err,"bad output format specified for outfile\n");
337                         goto end;
338                         }
339                 if (!i)
340                         {
341                         BIO_printf(bio_err,"unable to write DSA parameters\n");
342                         ERR_print_errors(bio_err);
343                         goto end;
344                         }
345                 }
346         if (genkey)
347                 {
348                 DSA *dsakey;
349
350                 assert(need_rand);
351                 if ((dsakey=DSAparams_dup(dsa)) == NULL) goto end;
352                 if (!DSA_generate_key(dsakey)) goto end;
353                 if      (outformat == FORMAT_ASN1)
354                         i=i2d_DSAPrivateKey_bio(out,dsakey);
355                 else if (outformat == FORMAT_PEM)
356                         i=PEM_write_bio_DSAPrivateKey(out,dsakey,NULL,NULL,0,NULL,NULL);
357                 else    {
358                         BIO_printf(bio_err,"bad output format specified for outfile\n");
359                         goto end;
360                         }
361                 DSA_free(dsakey);
362                 }
363         if (need_rand)
364                 app_RAND_write_file(NULL, bio_err);
365         ret=0;
366 end:
367         if (in != NULL) BIO_free(in);
368         if (out != NULL) BIO_free_all(out);
369         if (dsa != NULL) DSA_free(dsa);
370         apps_shutdown();
371         EXIT(ret);
372         }
373
374 static void MS_CALLBACK dsa_cb(int p, int n, void *arg)
375         {
376         char c='*';
377
378         if (p == 0) c='.';
379         if (p == 1) c='+';
380         if (p == 2) c='*';
381         if (p == 3) c='\n';
382         BIO_write(arg,&c,1);
383         (void)BIO_flush(arg);
384 #ifdef LINT
385         p=n;
386 #endif
387         }
388 #endif