126a52ac0222b43810f7e542f6cb6a10dda4d32d
[openssl.git] / apps / ecparam.c
1 /* apps/ecparam.c */
2 /* ====================================================================
3  * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer. 
11  *
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in
14  *    the documentation and/or other materials provided with the
15  *    distribution.
16  *
17  * 3. All advertising materials mentioning features or use of this
18  *    software must display the following acknowledgment:
19  *    "This product includes software developed by the OpenSSL Project
20  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
21  *
22  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23  *    endorse or promote products derived from this software without
24  *    prior written permission. For written permission, please contact
25  *    openssl-core@openssl.org.
26  *
27  * 5. Products derived from this software may not be called "OpenSSL"
28  *    nor may "OpenSSL" appear in their names without prior written
29  *    permission of the OpenSSL Project.
30  *
31  * 6. Redistributions of any form whatsoever must retain the following
32  *    acknowledgment:
33  *    "This product includes software developed by the OpenSSL Project
34  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
35  *
36  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
40  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47  * OF THE POSSIBILITY OF SUCH DAMAGE.
48  * ====================================================================
49  *
50  * This product includes cryptographic software written by Eric Young
51  * (eay@cryptsoft.com).  This product includes software written by Tim
52  * Hudson (tjh@cryptsoft.com).
53  *
54  */
55 #ifndef OPENSSL_NO_ECDSA
56 #include <assert.h>
57 #include <stdio.h>
58 #include <stdlib.h>
59 #include <time.h>
60 #include <string.h>
61 #include "apps.h"
62 #include <openssl/bio.h>
63 #include <openssl/err.h>
64 #include <openssl/bn.h>
65 #include <openssl/ec.h>
66 #include <openssl/ecdsa.h>
67 #include <openssl/x509.h>
68 #include <openssl/pem.h>
69
70 #undef PROG
71 #define PROG    ecparam_main
72
73 /* -inform arg            - input format - default PEM (DER or PEM)
74  * -outform arg           - output format - default PEM
75  * -in arg                - input file  - default stdin
76  * -out arg               - output file - default stdout
77  * -noout
78  * -text
79  * -check                 - validate the ec parameters
80  * -C
81  * -noout
82  * -name file             - use the ecparameters with 'short name' name
83  * -list_curves           - prints a list of all currently available curve
84  *                          'short names' and exits
85  * -conv_form                  - specifies the point conversion form 
86  *                          possible values : compressed
87  *                                            uncompressed (default)
88  *                                            hybrid
89  * -param_enc             - specifies the way the ec parameters are encoded
90  *                          in the asn1 der encoding
91  *                          possilbe values : named_curve (default)
92  *                                            explicit
93  * -no_seed               - if 'explicit' parameters are choosen do not
94  *                          use the seed
95  * -genkey                - generates a ecdsa private key
96  * -rand file
97  * -engine e              - use engine e, possible a hardware device
98  */
99
100 static const char *curve_list[20] = {
101         "prime192v1       - NIST recommended curve over a 192 bit prime field",
102         "prime192v2       - 192 bit prime curve from the X9.62 draft",
103         "prime192v3       - 192 bit prime curve from the X9.62 draft",
104         "prime239v1       - 239 bit prime curve from the X9.62 draft",
105         "prime239v2       - 239 bit prime curve from the X9.62 draft",
106         "prime239v3       - 239 bit prime curve from the X9.62 draft", 
107         "prime256v1       - NIST recommended curve over a 256 bit prime field",
108         "secp112r1        - SECG recommended curve over a 112 bit prime field", 
109         "secp112r2        - SECG recommended curve over a 112 bit prime field", 
110         "secp128r1        - SECG recommended curve over a 128 bit prime field",
111         "secp128r2        - SECG recommended curve over a 128 bit prime field", 
112         "secp160k1        - SECG recommended curve over a 160 bit prime field", 
113         "secp160r1        - SECG recommended curve over a 160 bit prime field", 
114         "secp160r2        - SECG recommended curve over a 160 bit prime field", 
115         "secp192k1        - SECG recommended curve over a 192 bit prime field",
116         "secp224k1        - SECG recommended curve over a 224 bit prime field", 
117         "secp224r1        - NIST recommended curve over a 224 bit prime field", 
118         "secp256k1        - SECG recommended curve over a 256 bit prime field",
119         "secp384r1        - NIST recommended curve over a 384 bit prime field", 
120         "secp521r1        - NIST recommended curve over a 521 bit prime field"
121 };
122
123 static int ecparam_print_var(BIO *,BIGNUM *,const char *,int,unsigned char *);
124
125 int MAIN(int, char **);
126
127 int MAIN(int argc, char **argv)
128         {
129         EC_GROUP *group = NULL;
130         point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED; 
131         int     new_form = 0;
132         int     asn1_flag = OPENSSL_EC_NAMED_CURVE;
133         int     new_asn1_flag = 0;
134         char    *curve_name = NULL, *inrand = NULL;
135         int     list_curves = 0, no_seed = 0, check = 0,
136                 badops = 0, text = 0, i, need_rand = 0, genkey = 0;
137         char    *infile = NULL, *outfile = NULL, *prog;
138         BIO     *in = NULL, *out = NULL;
139         int     informat, outformat, noout = 0, C = 0, ret = 1;
140         ENGINE  *e = NULL;
141         char    *engine = NULL;
142
143         BIGNUM  *ec_p = NULL, *ec_a = NULL, *ec_b = NULL,
144                 *ec_gen = NULL, *ec_order = NULL, *ec_cofactor = NULL;
145         unsigned char *buffer = NULL;
146
147         apps_startup();
148
149         if (bio_err == NULL)
150                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
151                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
152
153         if (!load_config(bio_err, NULL))
154                 goto end;
155
156         informat=FORMAT_PEM;
157         outformat=FORMAT_PEM;
158
159         prog=argv[0];
160         argc--;
161         argv++;
162         while (argc >= 1)
163                 {
164                 if      (strcmp(*argv,"-inform") == 0)
165                         {
166                         if (--argc < 1) goto bad;
167                         informat=str2fmt(*(++argv));
168                         }
169                 else if (strcmp(*argv,"-outform") == 0)
170                         {
171                         if (--argc < 1) goto bad;
172                         outformat=str2fmt(*(++argv));
173                         }
174                 else if (strcmp(*argv,"-in") == 0)
175                         {
176                         if (--argc < 1) goto bad;
177                         infile= *(++argv);
178                         }
179                 else if (strcmp(*argv,"-out") == 0)
180                         {
181                         if (--argc < 1) goto bad;
182                         outfile= *(++argv);
183                         }
184                 else if (strcmp(*argv,"-text") == 0)
185                         text = 1;
186                 else if (strcmp(*argv,"-C") == 0)
187                         C = 1;
188                 else if (strcmp(*argv,"-check") == 0)
189                         check = 1;
190                 else if (strcmp (*argv, "-name") == 0)
191                         {
192                         if (--argc < 1)
193                                 goto bad;
194                         curve_name = *(++argv);
195                         }
196                 else if (strcmp(*argv, "-list_curves") == 0)
197                         list_curves = 1;
198                 else if (strcmp(*argv, "-conv_form") == 0)
199                         {
200                         if (--argc < 1)
201                                 goto bad;
202                         ++argv;
203                         new_form = 1;
204                         if (strcmp(*argv, "compressed") == 0)
205                                 form = POINT_CONVERSION_COMPRESSED;
206                         else if (strcmp(*argv, "uncompressed") == 0)
207                                 form = POINT_CONVERSION_UNCOMPRESSED;
208                         else if (strcmp(*argv, "hybrid") == 0)
209                                 form = POINT_CONVERSION_HYBRID;
210                         else
211                                 goto bad;
212                         }
213                 else if (strcmp(*argv, "-param_enc") == 0)
214                         {
215                         if (--argc < 1)
216                                 goto bad;
217                         ++argv;
218                         new_asn1_flag = 1;
219                         if (strcmp(*argv, "named_curve") == 0)
220                                 asn1_flag = OPENSSL_EC_NAMED_CURVE;
221                         else if (strcmp(*argv, "explicit") == 0)
222                                 asn1_flag = 0;
223                         else
224                                 goto bad;
225                         }
226                 else if (strcmp(*argv, "-no_seed") == 0)
227                         no_seed = 1;
228                 else if (strcmp(*argv, "-noout") == 0)
229                         noout=1;
230                 else if (strcmp(*argv,"-genkey") == 0)
231                         {
232                         genkey=1;
233                         need_rand=1;
234                         }
235                 else if (strcmp(*argv, "-rand") == 0)
236                         {
237                         if (--argc < 1) goto bad;
238                         inrand= *(++argv);
239                         need_rand=1;
240                         }
241                 else if(strcmp(*argv, "-engine") == 0)
242                         {
243                         if (--argc < 1) goto bad;
244                         engine = *(++argv);
245                         }       
246                 else
247                         {
248                         BIO_printf(bio_err,"unknown option %s\n",*argv);
249                         badops=1;
250                         break;
251                         }
252                 argc--;
253                 argv++;
254                 }
255
256         if (badops)
257                 {
258 bad:
259                 BIO_printf(bio_err, "%s [options] <infile >outfile\n",prog);
260                 BIO_printf(bio_err, "where options are\n");
261                 BIO_printf(bio_err, " -inform arg             input format - "
262                                 "default PEM (DER or PEM)\n");
263                 BIO_printf(bio_err, " -outform arg            output format - "
264                                 "default PEM\n");
265                 BIO_printf(bio_err, " -in  arg                input file  - "
266                                 "default stdin\n");
267                 BIO_printf(bio_err, " -out arg                output file - "
268                                 "default stdout\n");
269                 BIO_printf(bio_err, " -noout                  do not print the "
270                                 "ec parameter\n");
271                 BIO_printf(bio_err, " -text                   print the ec "
272                                 "parameters in text form\n");
273                 BIO_printf(bio_err, " -check                  validate the ec "
274                                 "parameters\n");
275                 BIO_printf(bio_err, " -C                      print a 'C' "
276                                 "function creating the parameters\n");
277                 BIO_printf(bio_err, " -name arg               use the "
278                                 "ec parameters with 'short name' name\n");
279                 BIO_printf(bio_err, " -list_curves            prints a list of "
280                                 "all currently available curve\n");
281                 BIO_printf(bio_err, "                         'short names'\n");
282                 BIO_printf(bio_err, " -conv_form arg          specifies the "
283                                 "point conversion form \n");
284                 BIO_printf(bio_err, "                         possible values :"
285                                 " compressed\n");
286                 BIO_printf(bio_err, "                                          "
287                                 " uncompressed (default)\n");
288                 BIO_printf(bio_err, "                                          "
289                                 " hybrid\n");
290                 BIO_printf(bio_err, " -param_enc arg          specifies the way"
291                                 " the ec parameters are encoded\n");
292                 BIO_printf(bio_err, "                         in the asn1 der "
293                                 "encoding\n");
294                 BIO_printf(bio_err, "                         possilbe values :"
295                                 " named_curve (default)\n");
296                 BIO_printf(bio_err,"                                      "
297                                 "     explicit\n");
298                 BIO_printf(bio_err, " -no_seed                if 'explicit'"
299                                 " parameters are choosen do not\n");
300                 BIO_printf(bio_err, "                         use the seed\n");
301                 BIO_printf(bio_err, " -genkey                 generate ecdsa"
302                                 " key\n");
303                 BIO_printf(bio_err, " -rand file              files to use for"
304                                 " random number input\n");
305                 BIO_printf(bio_err, " -engine e               use engine e, "
306                                 "possible a hardware device\n");
307                 goto end;
308                 }
309
310         ERR_load_crypto_strings();
311
312         in=BIO_new(BIO_s_file());
313         out=BIO_new(BIO_s_file());
314         if ((in == NULL) || (out == NULL))
315                 {
316                 ERR_print_errors(bio_err);
317                 goto end;
318                 }
319
320         if (infile == NULL)
321                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
322         else
323                 {
324                 if (BIO_read_filename(in,infile) <= 0)
325                         {
326                         perror(infile);
327                         goto end;
328                         }
329                 }
330         if (outfile == NULL)
331                 {
332                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
333 #ifdef OPENSSL_SYS_VMS
334                 {
335                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
336                 out = BIO_push(tmpbio, out);
337                 }
338 #endif
339                 }
340         else
341                 {
342                 if (BIO_write_filename(out,outfile) <= 0)
343                         {
344                         perror(outfile);
345                         goto end;
346                         }
347                 }
348
349         e = setup_engine(bio_err, engine, 0);
350
351         if (list_curves)
352                 {
353                 int counter=0;
354
355                 for (; counter < sizeof(curve_list)/sizeof(char *); counter++)
356                         if (BIO_printf(bio_err, " %s\n", curve_list[counter]) 
357                                 <= 0) 
358                                 goto end;
359                 ret = 0;
360                 goto end;
361                 }
362
363         if (curve_name != NULL)
364                 {
365                 int nid = OBJ_sn2nid(curve_name);
366         
367                 if (nid == 0)
368                         {
369                         BIO_printf(bio_err, "unknown curve name (%s)\n", 
370                                 curve_name);
371                         goto end;
372                         }
373
374                 group = EC_GROUP_new_by_nid(nid);
375                 if (group == NULL)
376                         {
377                         BIO_printf(bio_err, "unable to create curve (%s)\n", 
378                                 curve_name);
379                         goto end;
380                         }
381                 EC_GROUP_set_asn1_flag(group, asn1_flag);
382                 EC_GROUP_set_point_conversion_form(group, form);
383                 }
384         else if (informat == FORMAT_ASN1)
385                 {
386                 group = d2i_ECPKParameters_bio(in, NULL);
387                 }
388         else if (informat == FORMAT_PEM)
389                 {
390                 group = PEM_read_bio_ECPKParameters(in,NULL,NULL,NULL);
391                 }
392         else
393                 {
394                 BIO_printf(bio_err, "bad input format specified\n");
395                 goto end;
396                 }
397
398         if (group == NULL)
399                 {
400                 BIO_printf(bio_err, 
401                         "unable to load elliptic curve parameters\n");
402                 ERR_print_errors(bio_err);
403                 goto end;
404                 }
405
406         if (new_form)
407                 EC_GROUP_set_point_conversion_form(group, form);
408
409         if (new_asn1_flag)
410                 EC_GROUP_set_asn1_flag(group, asn1_flag);
411
412         if (no_seed)
413                 {
414                 EC_GROUP_set_seed(group, NULL, 0);
415                 }
416
417         if (text)
418                 {
419                 if (!ECPKParameters_print(out, group, 0))
420                         goto end;
421                 }
422
423         if (check)
424                 {
425                 if (group == NULL)
426                         BIO_printf(bio_err, "no elliptic curve parameters\n");
427                 BIO_printf(bio_err, "checking elliptic curve parameters: ");
428                 if (!EC_GROUP_check(group, NULL))
429                         {
430                         BIO_printf(bio_err, "failed\n");
431                         ERR_print_errors(bio_err);
432                         }
433                 else
434                         BIO_printf(bio_err, "ok\n");
435                         
436                 }
437
438         if (C)
439                 {
440                 size_t  buf_len = 0, tmp_len = 0;
441                 const EC_POINT *point;
442                 int     is_prime, len = 0;
443                 const EC_METHOD *meth = EC_GROUP_method_of(group);
444
445                 if ((ec_p = BN_new()) == NULL || (ec_a = BN_new()) == NULL ||
446                     (ec_b = BN_new()) == NULL || (ec_gen = BN_new()) == NULL ||
447                     (ec_order = BN_new()) == NULL || 
448                     (ec_cofactor = BN_new()) == NULL )
449                         {
450                         perror("OPENSSL_malloc");
451                         goto end;
452                         }
453
454                 is_prime = (EC_METHOD_get_field_type(meth) == 
455                         NID_X9_62_prime_field);
456
457                 if (is_prime)
458                         {
459                         if (!EC_GROUP_get_curve_GFp(group, ec_p, ec_a,
460                                 ec_b, NULL))
461                                 goto end;
462                         }
463                 else
464                         {
465                         /* TODO */
466                         goto end;
467                         }
468
469                 if ((point = EC_GROUP_get0_generator(group)) == NULL)
470                         goto end;
471                 if (!EC_POINT_point2bn(group, point, 
472                         EC_GROUP_get_point_conversion_form(group), ec_gen, 
473                         NULL))
474                         goto end;
475                 if (!EC_GROUP_get_order(group, ec_order, NULL))
476                         goto end;
477                 if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL))
478                         goto end;
479
480                 if (!ec_p || !ec_a || !ec_b || !ec_gen || 
481                         !ec_order || !ec_cofactor)
482                         goto end;
483
484                 len = BN_num_bits(ec_order);
485
486                 if ((tmp_len = (size_t)BN_num_bytes(ec_p)) > buf_len)
487                         buf_len = tmp_len;
488                 if ((tmp_len = (size_t)BN_num_bytes(ec_a)) > buf_len)
489                         buf_len = tmp_len;
490                 if ((tmp_len = (size_t)BN_num_bytes(ec_b)) > buf_len)
491                         buf_len = tmp_len;
492                 if ((tmp_len = (size_t)BN_num_bytes(ec_gen)) > buf_len)
493                         buf_len = tmp_len;
494                 if ((tmp_len = (size_t)BN_num_bytes(ec_order)) > buf_len)
495                         buf_len = tmp_len;
496                 if ((tmp_len = (size_t)BN_num_bytes(ec_cofactor)) > buf_len)
497                         buf_len = tmp_len;
498
499                 buffer = (unsigned char *)OPENSSL_malloc(buf_len);
500
501                 if (buffer == NULL)
502                         {
503                         perror("OPENSSL_malloc");
504                         goto end;
505                         }
506
507                 ecparam_print_var(out, ec_p, "ec_p", len, buffer);
508                 ecparam_print_var(out, ec_a, "ec_a", len, buffer);
509                 ecparam_print_var(out, ec_b, "ec_b", len, buffer);
510                 ecparam_print_var(out, ec_gen, "ec_gen", len, buffer);
511                 ecparam_print_var(out, ec_order, "ec_order", len, buffer);
512                 ecparam_print_var(out, ec_cofactor, "ec_cofactor", len, 
513                         buffer);
514
515                 BIO_printf(out, "\n\n");
516
517                 BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n\t{\n", len);
518                 BIO_printf(out, "\tint ok=0;\n");
519                 BIO_printf(out, "\tEC_GROUP *group = NULL;\n");
520                 BIO_printf(out, "\tEC_POINT *point = NULL;\n");
521                 BIO_printf(out, "\tBIGNUM   *tmp_1 = NULL, *tmp_2 = NULL, "
522                                 "*tmp_3 = NULL;\n\n");
523                 BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_p_%d, "
524                                 "sizeof(ec_p_%d), NULL)) == NULL)\n\t\t"
525                                 "goto err;\n", len, len);
526                 BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_a_%d, "
527                                 "sizeof(ec_a_%d), NULL)) == NULL)\n\t\t"
528                                 "goto err;\n", len, len);
529                 BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_b_%d, "
530                                 "sizeof(ec_b_%d), NULL)) == NULL)\n\t\t"
531                                 "goto err;\n", len, len);
532                 if (is_prime)
533                         {
534                         BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_"
535                                 "GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)"
536                                 "\n\t\tgoto err;\n\n");
537                         }
538                 else
539                         {
540                         /* TODO */
541                         goto end;
542                         }
543                 BIO_printf(out, "\t/* build generator */\n");
544                 BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_gen_%d, "
545                                 "sizeof(ec_gen_%d), tmp_1)) == NULL)"
546                                 "\n\t\tgoto err;\n", len, len);
547                 BIO_printf(out, "\tpoint = EC_POINT_bn2point(group, tmp_1, "
548                                 "NULL, NULL);\n");
549                 BIO_printf(out, "\tif (point == NULL)\n\t\tgoto err;\n");
550                 BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_order_%d, "
551                                 "sizeof(ec_order_%d), tmp_2)) == NULL)"
552                                 "\n\t\tgoto err;\n", len, len);
553                 BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_cofactor_%d, "
554                                 "sizeof(ec_cofactor_%d), tmp_3)) == NULL)"
555                                 "\n\t\tgoto err;\n", len, len);
556                 BIO_printf(out, "\tif (!EC_GROUP_set_generator(group, point,"
557                                 " tmp_2, tmp_3))\n\t\tgoto err;\n");
558                 BIO_printf(out, "\n\tok=1;\n");
559                 BIO_printf(out, "err:\n");
560                 BIO_printf(out, "\tif (tmp_1)\n\t\tBN_free(tmp_1);\n");
561                 BIO_printf(out, "\tif (tmp_2)\n\t\tBN_free(tmp_2);\n");
562                 BIO_printf(out, "\tif (tmp_3)\n\t\tBN_free(tmp_3);\n");
563                 BIO_printf(out, "\tif (point)\n\t\tEC_POINT_free(point);\n");
564                 BIO_printf(out, "\tif (!ok)\n");
565                 BIO_printf(out, "\t\t{\n");
566                 BIO_printf(out, "\t\tEC_GROUP_free(group);\n");
567                 BIO_printf(out, "\t\tgroup = NULL;\n");
568                 BIO_printf(out, "\t\t}\n");
569                 BIO_printf(out, "\treturn(group);\n\t}\n");
570         }
571
572         if (!noout)
573                 {
574                 if (outformat == FORMAT_ASN1)
575                         i = i2d_ECPKParameters_bio(out, group);
576                 else if (outformat == FORMAT_PEM)
577                         i = PEM_write_bio_ECPKParameters(out, group);
578                 else    
579                         {
580                         BIO_printf(bio_err,"bad output format specified for"
581                                 " outfile\n");
582                         goto end;
583                         }
584                 if (!i)
585                         {
586                         BIO_printf(bio_err, "unable to write elliptic "
587                                 "curve parameters\n");
588                         ERR_print_errors(bio_err);
589                         goto end;
590                         }
591                 }
592         
593         if (need_rand)
594                 {
595                 app_RAND_load_file(NULL, bio_err, (inrand != NULL));
596                 if (inrand != NULL)
597                         BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
598                                 app_RAND_load_files(inrand));
599                 }
600
601         if (genkey)
602                 {
603                 ECDSA *ecdsa = ECDSA_new();
604
605                 if (ecdsa == NULL)
606                         goto end;
607
608                 assert(need_rand);
609
610                 ecdsa->group = group;
611                 
612                 if (!ECDSA_generate_key(ecdsa))
613                         {
614                         ecdsa->group = NULL;
615                         ECDSA_free(ecdsa);
616                         goto end;
617                         }
618                 if (outformat == FORMAT_ASN1)
619                         i = i2d_ECDSAPrivateKey_bio(out, ecdsa);
620                 else if (outformat == FORMAT_PEM)
621                         i = PEM_write_bio_ECDSAPrivateKey(out, ecdsa, NULL,
622                                 NULL, 0, NULL, NULL);
623                 else    
624                         {
625                         BIO_printf(bio_err, "bad output format specified "
626                                 "for outfile\n");
627                         ecdsa->group = NULL;
628                         ECDSA_free(ecdsa);
629                         goto end;
630                         }
631                 ecdsa->group = NULL;
632                 ECDSA_free(ecdsa);
633                 }
634
635         if (need_rand)
636                 app_RAND_write_file(NULL, bio_err);
637
638         ret=0;
639 end:
640         if (ec_p)
641                 BN_free(ec_p);
642         if (ec_a)
643                 BN_free(ec_a);
644         if (ec_b)
645                 BN_free(ec_b);
646         if (ec_gen)
647                 BN_free(ec_gen);
648         if (ec_order)
649                 BN_free(ec_order);
650         if (ec_cofactor)
651                 BN_free(ec_cofactor);
652         if (buffer)
653                 OPENSSL_free(buffer);
654         if (in != NULL)
655                 BIO_free(in);
656         if (out != NULL)
657                 BIO_free_all(out);
658         if (group != NULL)
659                 EC_GROUP_free(group);
660         apps_shutdown();
661         EXIT(ret);
662 }
663
664 int ecparam_print_var(BIO *out, BIGNUM *in, const char *var,
665         int len, unsigned char *buffer)
666         {
667         BIO_printf(out, "static unsigned char %s_%d[] = {", var, len);
668         if (BN_is_zero(in))
669                 BIO_printf(out, "\n\t0x00");
670         else 
671                 {
672                 int i, l;
673
674                 l = BN_bn2bin(in, buffer);
675                 for (i=0; i<l-1; i++)
676                         {
677                         if ((i%12) == 0) 
678                                 BIO_printf(out, "\n\t");
679                         BIO_printf(out, "0x%02X,", buffer[i]);
680                         }
681                 if ((i%12) == 0) 
682                         BIO_printf(out, "\n\t");
683                 BIO_printf(out, "0x%02X", buffer[i]);
684                 }
685         BIO_printf(out, "\n\t};\n\n");
686         return 1;
687         }
688 #endif