1 /* apps/ecparam.c */
2 /*
3 * Written by Nils Larsch for the OpenSSL project.
4 */
5 /* ====================================================================
6 * Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * openssl-core@openssl.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58 /* ====================================================================
59 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
60 *
61 * Portions of the attached software ("Contribution") are developed by
62 * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
63 *
64 * The Contribution is licensed pursuant to the OpenSSL open source
65 * license provided above.
66 *
67 * The elliptic curve binary polynomial software is originally written by
68 * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems Laboratories.
69 *
70 */
71
72 #include <openssl/opensslconf.h>
73 #ifndef OPENSSL_NO_EC
74 #include <assert.h>
75 #include <stdio.h>
76 #include <stdlib.h>
77 #include <time.h>
78 #include <string.h>
79 #include "apps.h"
80 #include <openssl/bio.h>
81 #include <openssl/err.h>
82 #include <openssl/bn.h>
83 #include <openssl/ec.h>
84 #include <openssl/x509.h>
85 #include <openssl/pem.h>
86
87 #undef PROG
88 #define PROG ecparam_main
89
90 /* -inform arg - input format - default PEM (DER or PEM)
91 * -outform arg - output format - default PEM
92 * -in arg - input file - default stdin
93 * -out arg - output file - default stdout
94 * -noout - do not print the ec parameter
95 * -text - print the ec parameters in text form
96 * -check - validate the ec parameters
97 * -C - print a 'C' function creating the parameters
98 * -name arg - use the ec parameters with 'short name' name
99 * -list_curves - prints a list of all currently available curve 'short names'
100 * -conv_form arg - specifies the point conversion form
101 * - possible values: compressed
102 * uncompressed (default)
103 * hybrid
104 * -param_enc arg - specifies the way the ec parameters are encoded
105 * in the asn1 der encoding
106 * possible values: named_curve (default)
107 * explicit
108 * -no_seed - if 'explicit' parameters are chosen do not use the seed
109 * -genkey - generate ec key
110 * -rand file - files to use for random number input
111 * -engine e - use engine e, possibly a hardware device
112 */
113
114
115 static int ecparam_print_var(BIO *,BIGNUM *,const char *,int,unsigned char *);
116
117 int MAIN(int, char **);
118
MAIN(int argc,char ** argv)119 int MAIN(int argc, char **argv)
120 {
121 EC_GROUP *group = NULL;
122 point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED;
123 int new_form = 0;
124 int asn1_flag = OPENSSL_EC_NAMED_CURVE;
125 int new_asn1_flag = 0;
126 char *curve_name = NULL, *inrand = NULL;
127 int list_curves = 0, no_seed = 0, check = 0,
128 badops = 0, text = 0, i, need_rand = 0, genkey = 0;
129 char *infile = NULL, *outfile = NULL, *prog;
130 BIO *in = NULL, *out = NULL;
131 int informat, outformat, noout = 0, C = 0, ret = 1;
132 char *engine = NULL;
133
134 BIGNUM *ec_p = NULL, *ec_a = NULL, *ec_b = NULL,
135 *ec_gen = NULL, *ec_order = NULL, *ec_cofactor = NULL;
136 unsigned char *buffer = NULL;
137
138 apps_startup();
139
140 if (bio_err == NULL)
141 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
142 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
143
144 if (!load_config(bio_err, NULL))
145 goto end;
146
147 informat=FORMAT_PEM;
148 outformat=FORMAT_PEM;
149
150 prog=argv[0];
151 argc--;
152 argv++;
153 while (argc >= 1)
154 {
155 if (strcmp(*argv,"-inform") == 0)
156 {
157 if (--argc < 1) goto bad;
158 informat=str2fmt(*(++argv));
159 }
160 else if (strcmp(*argv,"-outform") == 0)
161 {
162 if (--argc < 1) goto bad;
163 outformat=str2fmt(*(++argv));
164 }
165 else if (strcmp(*argv,"-in") == 0)
166 {
167 if (--argc < 1) goto bad;
168 infile= *(++argv);
169 }
170 else if (strcmp(*argv,"-out") == 0)
171 {
172 if (--argc < 1) goto bad;
173 outfile= *(++argv);
174 }
175 else if (strcmp(*argv,"-text") == 0)
176 text = 1;
177 else if (strcmp(*argv,"-C") == 0)
178 C = 1;
179 else if (strcmp(*argv,"-check") == 0)
180 check = 1;
181 else if (strcmp (*argv, "-name") == 0)
182 {
183 if (--argc < 1)
184 goto bad;
185 curve_name = *(++argv);
186 }
187 else if (strcmp(*argv, "-list_curves") == 0)
188 list_curves = 1;
189 else if (strcmp(*argv, "-conv_form") == 0)
190 {
191 if (--argc < 1)
192 goto bad;
193 ++argv;
194 new_form = 1;
195 if (strcmp(*argv, "compressed") == 0)
196 form = POINT_CONVERSION_COMPRESSED;
197 else if (strcmp(*argv, "uncompressed") == 0)
198 form = POINT_CONVERSION_UNCOMPRESSED;
199 else if (strcmp(*argv, "hybrid") == 0)
200 form = POINT_CONVERSION_HYBRID;
201 else
202 goto bad;
203 }
204 else if (strcmp(*argv, "-param_enc") == 0)
205 {
206 if (--argc < 1)
207 goto bad;
208 ++argv;
209 new_asn1_flag = 1;
210 if (strcmp(*argv, "named_curve") == 0)
211 asn1_flag = OPENSSL_EC_NAMED_CURVE;
212 else if (strcmp(*argv, "explicit") == 0)
213 asn1_flag = 0;
214 else
215 goto bad;
216 }
217 else if (strcmp(*argv, "-no_seed") == 0)
218 no_seed = 1;
219 else if (strcmp(*argv, "-noout") == 0)
220 noout=1;
221 else if (strcmp(*argv,"-genkey") == 0)
222 {
223 genkey=1;
224 need_rand=1;
225 }
226 else if (strcmp(*argv, "-rand") == 0)
227 {
228 if (--argc < 1) goto bad;
229 inrand= *(++argv);
230 need_rand=1;
231 }
232 else if(strcmp(*argv, "-engine") == 0)
233 {
234 if (--argc < 1) goto bad;
235 engine = *(++argv);
236 }
237 else
238 {
239 BIO_printf(bio_err,"unknown option %s\n",*argv);
240 badops=1;
241 break;
242 }
243 argc--;
244 argv++;
245 }
246
247 if (badops)
248 {
249 bad:
250 BIO_printf(bio_err, "%s [options] <infile >outfile\n",prog);
251 BIO_printf(bio_err, "where options are\n");
252 BIO_printf(bio_err, " -inform arg input format - "
253 "default PEM (DER or PEM)\n");
254 BIO_printf(bio_err, " -outform arg output format - "
255 "default PEM\n");
256 BIO_printf(bio_err, " -in arg input file - "
257 "default stdin\n");
258 BIO_printf(bio_err, " -out arg output file - "
259 "default stdout\n");
260 BIO_printf(bio_err, " -noout do not print the "
261 "ec parameter\n");
262 BIO_printf(bio_err, " -text print the ec "
263 "parameters in text form\n");
264 BIO_printf(bio_err, " -check validate the ec "
265 "parameters\n");
266 BIO_printf(bio_err, " -C print a 'C' "
267 "function creating the parameters\n");
268 BIO_printf(bio_err, " -name arg use the "
269 "ec parameters with 'short name' name\n");
270 BIO_printf(bio_err, " -list_curves prints a list of "
271 "all currently available curve 'short names'\n");
272 BIO_printf(bio_err, " -conv_form arg specifies the "
273 "point conversion form \n");
274 BIO_printf(bio_err, " possible values:"
275 " compressed\n");
276 BIO_printf(bio_err, " "
277 " uncompressed (default)\n");
278 BIO_printf(bio_err, " "
279 " hybrid\n");
280 BIO_printf(bio_err, " -param_enc arg specifies the way"
281 " the ec parameters are encoded\n");
282 BIO_printf(bio_err, " in the asn1 der "
283 "encoding\n");
284 BIO_printf(bio_err, " possible values:"
285 " named_curve (default)\n");
286 BIO_printf(bio_err, " "
287 " explicit\n");
288 BIO_printf(bio_err, " -no_seed if 'explicit'"
289 " parameters are chosen do not"
290 " use the seed\n");
291 BIO_printf(bio_err, " -genkey generate ec"
292 " key\n");
293 BIO_printf(bio_err, " -rand file files to use for"
294 " random number input\n");
295 BIO_printf(bio_err, " -engine e use engine e, "
296 "possibly a hardware device\n");
297 goto end;
298 }
299
300 ERR_load_crypto_strings();
301
302 in=BIO_new(BIO_s_file());
303 out=BIO_new(BIO_s_file());
304 if ((in == NULL) || (out == NULL))
305 {
306 ERR_print_errors(bio_err);
307 goto end;
308 }
309
310 if (infile == NULL)
311 BIO_set_fp(in,stdin,BIO_NOCLOSE);
312 else
313 {
314 if (BIO_read_filename(in,infile) <= 0)
315 {
316 perror(infile);
317 goto end;
318 }
319 }
320 if (outfile == NULL)
321 {
322 BIO_set_fp(out,stdout,BIO_NOCLOSE);
323 #ifdef OPENSSL_SYS_VMS
324 {
325 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
326 out = BIO_push(tmpbio, out);
327 }
328 #endif
329 }
330 else
331 {
332 if (BIO_write_filename(out,outfile) <= 0)
333 {
334 perror(outfile);
335 goto end;
336 }
337 }
338
339 #ifndef OPENSSL_NO_ENGINE
340 setup_engine(bio_err, engine, 0);
341 #endif
342
343 if (list_curves)
344 {
345 EC_builtin_curve *curves = NULL;
346 size_t crv_len = 0;
347 size_t n = 0;
348
349 crv_len = EC_get_builtin_curves(NULL, 0);
350
351 curves = OPENSSL_malloc((int)(sizeof(EC_builtin_curve) * crv_len));
352
353 if (curves == NULL)
354 goto end;
355
356 if (!EC_get_builtin_curves(curves, crv_len))
357 {
358 OPENSSL_free(curves);
359 goto end;
360 }
361
362
363 for (n = 0; n < crv_len; n++)
364 {
365 const char *comment;
366 const char *sname;
367 comment = curves[n].comment;
368 sname = OBJ_nid2sn(curves[n].nid);
369 if (comment == NULL)
370 comment = "CURVE DESCRIPTION NOT AVAILABLE";
371 if (sname == NULL)
372 sname = "";
373
374 BIO_printf(out, " %-10s: ", sname);
375 BIO_printf(out, "%s\n", comment);
376 }
377
378 OPENSSL_free(curves);
379 ret = 0;
380 goto end;
381 }
382
383 if (curve_name != NULL)
384 {
385 int nid;
386
387 /* workaround for the SECG curve names secp192r1
388 * and secp256r1 (which are the same as the curves
389 * prime192v1 and prime256v1 defined in X9.62)
390 */
391 if (!strcmp(curve_name, "secp192r1"))
392 {
393 BIO_printf(bio_err, "using curve name prime192v1 "
394 "instead of secp192r1\n");
395 nid = NID_X9_62_prime192v1;
396 }
397 else if (!strcmp(curve_name, "secp256r1"))
398 {
399 BIO_printf(bio_err, "using curve name prime256v1 "
400 "instead of secp256r1\n");
401 nid = NID_X9_62_prime256v1;
402 }
403 else
404 nid = OBJ_sn2nid(curve_name);
405
406 if (nid == 0)
407 {
408 BIO_printf(bio_err, "unknown curve name (%s)\n",
409 curve_name);
410 goto end;
411 }
412
413 group = EC_GROUP_new_by_curve_name(nid);
414 if (group == NULL)
415 {
416 BIO_printf(bio_err, "unable to create curve (%s)\n",
417 curve_name);
418 goto end;
419 }
420 EC_GROUP_set_asn1_flag(group, asn1_flag);
421 EC_GROUP_set_point_conversion_form(group, form);
422 }
423 else if (informat == FORMAT_ASN1)
424 {
425 group = d2i_ECPKParameters_bio(in, NULL);
426 }
427 else if (informat == FORMAT_PEM)
428 {
429 group = PEM_read_bio_ECPKParameters(in,NULL,NULL,NULL);
430 }
431 else
432 {
433 BIO_printf(bio_err, "bad input format specified\n");
434 goto end;
435 }
436
437 if (group == NULL)
438 {
439 BIO_printf(bio_err,
440 "unable to load elliptic curve parameters\n");
441 ERR_print_errors(bio_err);
442 goto end;
443 }
444
445 if (new_form)
446 EC_GROUP_set_point_conversion_form(group, form);
447
448 if (new_asn1_flag)
449 EC_GROUP_set_asn1_flag(group, asn1_flag);
450
451 if (no_seed)
452 {
453 EC_GROUP_set_seed(group, NULL, 0);
454 }
455
456 if (text)
457 {
458 if (!ECPKParameters_print(out, group, 0))
459 goto end;
460 }
461
462 if (check)
463 {
464 if (group == NULL)
465 BIO_printf(bio_err, "no elliptic curve parameters\n");
466 BIO_printf(bio_err, "checking elliptic curve parameters: ");
467 if (!EC_GROUP_check(group, NULL))
468 {
469 BIO_printf(bio_err, "failed\n");
470 ERR_print_errors(bio_err);
471 }
472 else
473 BIO_printf(bio_err, "ok\n");
474
475 }
476
477 if (C)
478 {
479 size_t buf_len = 0, tmp_len = 0;
480 const EC_POINT *point;
481 int is_prime, len = 0;
482 const EC_METHOD *meth = EC_GROUP_method_of(group);
483
484 if ((ec_p = BN_new()) == NULL || (ec_a = BN_new()) == NULL ||
485 (ec_b = BN_new()) == NULL || (ec_gen = BN_new()) == NULL ||
486 (ec_order = BN_new()) == NULL ||
487 (ec_cofactor = BN_new()) == NULL )
488 {
489 perror("OPENSSL_malloc");
490 goto end;
491 }
492
493 is_prime = (EC_METHOD_get_field_type(meth) ==
494 NID_X9_62_prime_field);
495
496 if (is_prime)
497 {
498 if (!EC_GROUP_get_curve_GFp(group, ec_p, ec_a,
499 ec_b, NULL))
500 goto end;
501 }
502 else
503 {
504 /* TODO */
505 goto end;
506 }
507
508 if ((point = EC_GROUP_get0_generator(group)) == NULL)
509 goto end;
510 if (!EC_POINT_point2bn(group, point,
511 EC_GROUP_get_point_conversion_form(group), ec_gen,
512 NULL))
513 goto end;
514 if (!EC_GROUP_get_order(group, ec_order, NULL))
515 goto end;
516 if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL))
517 goto end;
518
519 if (!ec_p || !ec_a || !ec_b || !ec_gen ||
520 !ec_order || !ec_cofactor)
521 goto end;
522
523 len = BN_num_bits(ec_order);
524
525 if ((tmp_len = (size_t)BN_num_bytes(ec_p)) > buf_len)
526 buf_len = tmp_len;
527 if ((tmp_len = (size_t)BN_num_bytes(ec_a)) > buf_len)
528 buf_len = tmp_len;
529 if ((tmp_len = (size_t)BN_num_bytes(ec_b)) > buf_len)
530 buf_len = tmp_len;
531 if ((tmp_len = (size_t)BN_num_bytes(ec_gen)) > buf_len)
532 buf_len = tmp_len;
533 if ((tmp_len = (size_t)BN_num_bytes(ec_order)) > buf_len)
534 buf_len = tmp_len;
535 if ((tmp_len = (size_t)BN_num_bytes(ec_cofactor)) > buf_len)
536 buf_len = tmp_len;
537
538 buffer = (unsigned char *)OPENSSL_malloc(buf_len);
539
540 if (buffer == NULL)
541 {
542 perror("OPENSSL_malloc");
543 goto end;
544 }
545
546 ecparam_print_var(out, ec_p, "ec_p", len, buffer);
547 ecparam_print_var(out, ec_a, "ec_a", len, buffer);
548 ecparam_print_var(out, ec_b, "ec_b", len, buffer);
549 ecparam_print_var(out, ec_gen, "ec_gen", len, buffer);
550 ecparam_print_var(out, ec_order, "ec_order", len, buffer);
551 ecparam_print_var(out, ec_cofactor, "ec_cofactor", len,
552 buffer);
553
554 BIO_printf(out, "\n\n");
555
556 BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n\t{\n", len);
557 BIO_printf(out, "\tint ok=0;\n");
558 BIO_printf(out, "\tEC_GROUP *group = NULL;\n");
559 BIO_printf(out, "\tEC_POINT *point = NULL;\n");
560 BIO_printf(out, "\tBIGNUM *tmp_1 = NULL, *tmp_2 = NULL, "
561 "*tmp_3 = NULL;\n\n");
562 BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_p_%d, "
563 "sizeof(ec_p_%d), NULL)) == NULL)\n\t\t"
564 "goto err;\n", len, len);
565 BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_a_%d, "
566 "sizeof(ec_a_%d), NULL)) == NULL)\n\t\t"
567 "goto err;\n", len, len);
568 BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_b_%d, "
569 "sizeof(ec_b_%d), NULL)) == NULL)\n\t\t"
570 "goto err;\n", len, len);
571 if (is_prime)
572 {
573 BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_"
574 "GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)"
575 "\n\t\tgoto err;\n\n");
576 }
577 else
578 {
579 /* TODO */
580 goto end;
581 }
582 BIO_printf(out, "\t/* build generator */\n");
583 BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_gen_%d, "
584 "sizeof(ec_gen_%d), tmp_1)) == NULL)"
585 "\n\t\tgoto err;\n", len, len);
586 BIO_printf(out, "\tpoint = EC_POINT_bn2point(group, tmp_1, "
587 "NULL, NULL);\n");
588 BIO_printf(out, "\tif (point == NULL)\n\t\tgoto err;\n");
589 BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_order_%d, "
590 "sizeof(ec_order_%d), tmp_2)) == NULL)"
591 "\n\t\tgoto err;\n", len, len);
592 BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_cofactor_%d, "
593 "sizeof(ec_cofactor_%d), tmp_3)) == NULL)"
594 "\n\t\tgoto err;\n", len, len);
595 BIO_printf(out, "\tif (!EC_GROUP_set_generator(group, point,"
596 " tmp_2, tmp_3))\n\t\tgoto err;\n");
597 BIO_printf(out, "\n\tok=1;\n");
598 BIO_printf(out, "err:\n");
599 BIO_printf(out, "\tif (tmp_1)\n\t\tBN_free(tmp_1);\n");
600 BIO_printf(out, "\tif (tmp_2)\n\t\tBN_free(tmp_2);\n");
601 BIO_printf(out, "\tif (tmp_3)\n\t\tBN_free(tmp_3);\n");
602 BIO_printf(out, "\tif (point)\n\t\tEC_POINT_free(point);\n");
603 BIO_printf(out, "\tif (!ok)\n");
604 BIO_printf(out, "\t\t{\n");
605 BIO_printf(out, "\t\tEC_GROUP_free(group);\n");
606 BIO_printf(out, "\t\tgroup = NULL;\n");
607 BIO_printf(out, "\t\t}\n");
608 BIO_printf(out, "\treturn(group);\n\t}\n");
609 }
610
611 if (!noout)
612 {
613 if (outformat == FORMAT_ASN1)
614 i = i2d_ECPKParameters_bio(out, group);
615 else if (outformat == FORMAT_PEM)
616 i = PEM_write_bio_ECPKParameters(out, group);
617 else
618 {
619 BIO_printf(bio_err,"bad output format specified for"
620 " outfile\n");
621 goto end;
622 }
623 if (!i)
624 {
625 BIO_printf(bio_err, "unable to write elliptic "
626 "curve parameters\n");
627 ERR_print_errors(bio_err);
628 goto end;
629 }
630 }
631
632 if (need_rand)
633 {
634 app_RAND_load_file(NULL, bio_err, (inrand != NULL));
635 if (inrand != NULL)
636 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
637 app_RAND_load_files(inrand));
638 }
639
640 if (genkey)
641 {
642 EC_KEY *eckey = EC_KEY_new();
643
644 if (eckey == NULL)
645 goto end;
646
647 assert(need_rand);
648
649 if (EC_KEY_set_group(eckey, group) == 0)
650 goto end;
651
652 if (!EC_KEY_generate_key(eckey))
653 {
654 EC_KEY_free(eckey);
655 goto end;
656 }
657 if (outformat == FORMAT_ASN1)
658 i = i2d_ECPrivateKey_bio(out, eckey);
659 else if (outformat == FORMAT_PEM)
660 i = PEM_write_bio_ECPrivateKey(out, eckey, NULL,
661 NULL, 0, NULL, NULL);
662 else
663 {
664 BIO_printf(bio_err, "bad output format specified "
665 "for outfile\n");
666 EC_KEY_free(eckey);
667 goto end;
668 }
669 EC_KEY_free(eckey);
670 }
671
672 if (need_rand)
673 app_RAND_write_file(NULL, bio_err);
674
675 ret=0;
676 end:
677 if (ec_p)
678 BN_free(ec_p);
679 if (ec_a)
680 BN_free(ec_a);
681 if (ec_b)
682 BN_free(ec_b);
683 if (ec_gen)
684 BN_free(ec_gen);
685 if (ec_order)
686 BN_free(ec_order);
687 if (ec_cofactor)
688 BN_free(ec_cofactor);
689 if (buffer)
690 OPENSSL_free(buffer);
691 if (in != NULL)
692 BIO_free(in);
693 if (out != NULL)
694 BIO_free_all(out);
695 if (group != NULL)
696 EC_GROUP_free(group);
697 apps_shutdown();
698 OPENSSL_EXIT(ret);
699 }
700
ecparam_print_var(BIO * out,BIGNUM * in,const char * var,int len,unsigned char * buffer)701 static int ecparam_print_var(BIO *out, BIGNUM *in, const char *var,
702 int len, unsigned char *buffer)
703 {
704 BIO_printf(out, "static unsigned char %s_%d[] = {", var, len);
705 if (BN_is_zero(in))
706 BIO_printf(out, "\n\t0x00");
707 else
708 {
709 int i, l;
710
711 l = BN_bn2bin(in, buffer);
712 for (i=0; i<l-1; i++)
713 {
714 if ((i%12) == 0)
715 BIO_printf(out, "\n\t");
716 BIO_printf(out, "0x%02X,", buffer[i]);
717 }
718 if ((i%12) == 0)
719 BIO_printf(out, "\n\t");
720 BIO_printf(out, "0x%02X", buffer[i]);
721 }
722 BIO_printf(out, "\n\t};\n\n");
723 return 1;
724 }
725 #else /* !OPENSSL_NO_EC */
726
727 # if PEDANTIC
728 static void *dummy=&dummy;
729 # endif
730
731 #endif
732