GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/openssl/ecparam.c Lines: 0 248 0.0 %
Date: 2016-12-06 Branches: 0 142 0.0 %

Line Branch Exec Source
1
/* $OpenBSD: ecparam.c,v 1.15 2015/10/17 15:00:11 doug Exp $ */
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
74
#ifndef OPENSSL_NO_EC
75
76
#include <stdio.h>
77
#include <stdlib.h>
78
#include <string.h>
79
#include <time.h>
80
81
#include "apps.h"
82
83
#include <openssl/bio.h>
84
#include <openssl/bn.h>
85
#include <openssl/ec.h>
86
#include <openssl/err.h>
87
#include <openssl/pem.h>
88
#include <openssl/x509.h>
89
90
static int ecparam_print_var(BIO *, BIGNUM *, const char *, int,
91
    unsigned char *);
92
93
static struct {
94
	int C;
95
	int asn1_flag;
96
	int check;
97
	char *curve_name;
98
	point_conversion_form_t form;
99
	int genkey;
100
	char *infile;
101
	int informat;
102
	int list_curves;
103
	int new_asn1_flag;
104
	int new_form;
105
	int no_seed;
106
	int noout;
107
	char *outfile;
108
	int outformat;
109
	int text;
110
} ecparam_config;
111
112
static int
113
ecparam_opt_form(char *arg)
114
{
115
	if (strcmp(arg, "compressed") == 0)
116
		ecparam_config.form = POINT_CONVERSION_COMPRESSED;
117
	else if (strcmp(arg, "uncompressed") == 0)
118
		ecparam_config.form = POINT_CONVERSION_UNCOMPRESSED;
119
	else if (strcmp(arg, "hybrid") == 0)
120
		ecparam_config.form = POINT_CONVERSION_HYBRID;
121
	else
122
		return (1);
123
124
	ecparam_config.new_form = 1;
125
	return (0);
126
}
127
128
static int
129
ecparam_opt_enctype(char *arg)
130
{
131
	if (strcmp(arg, "explicit") == 0)
132
		ecparam_config.asn1_flag = 0;
133
	else if (strcmp(arg, "named_curve") == 0)
134
		ecparam_config.asn1_flag = OPENSSL_EC_NAMED_CURVE;
135
	else
136
		return (1);
137
138
	ecparam_config.new_asn1_flag = 1;
139
	return (0);
140
}
141
142
struct option ecparam_options[] = {
143
	{
144
		.name = "C",
145
		.desc = "Convert the EC parameters into C code",
146
		.type = OPTION_FLAG,
147
		.opt.flag = &ecparam_config.C,
148
	},
149
	{
150
		.name = "check",
151
		.desc = "Validate the elliptic curve parameters",
152
		.type = OPTION_FLAG,
153
		.opt.flag = &ecparam_config.check,
154
	},
155
	{
156
		.name = "conv_form",
157
		.argname = "form",
158
		.desc = "Specify point conversion form:\n"
159
		    "  compressed, uncompressed (default), hybrid",
160
		.type = OPTION_ARG_FUNC,
161
		.opt.argfunc = ecparam_opt_form,
162
	},
163
	{
164
		.name = "genkey",
165
		.desc = "Generate an EC private key using the specified "
166
		    "parameters",
167
		.type = OPTION_FLAG,
168
		.opt.flag = &ecparam_config.genkey,
169
	},
170
	{
171
		.name = "in",
172
		.argname = "file",
173
		.desc = "Input file to read parameters from (default stdin)",
174
		.type = OPTION_ARG,
175
		.opt.arg = &ecparam_config.infile,
176
	},
177
	{
178
		.name = "inform",
179
		.argname = "format",
180
		.desc = "Input format (DER or PEM)",
181
		.type = OPTION_ARG_FORMAT,
182
		.opt.value = &ecparam_config.informat,
183
	},
184
	{
185
		.name = "list_curves",
186
		.desc = "Print list of all currently implemented EC "
187
		    "parameter names",
188
		.type = OPTION_FLAG,
189
		.opt.flag = &ecparam_config.list_curves,
190
	},
191
	{
192
		.name = "name",
193
		.argname = "curve",
194
		.desc = "Use the EC parameters with the specified name",
195
		.type = OPTION_ARG,
196
		.opt.arg = &ecparam_config.curve_name,
197
	},
198
	{
199
		.name = "no_seed",
200
		.desc = "Do not output seed with explicit parameter encoding",
201
		.type = OPTION_FLAG,
202
		.opt.flag = &ecparam_config.no_seed,
203
	},
204
	{
205
		.name = "noout",
206
		.desc = "Do not output encoded version of EC parameters",
207
		.type = OPTION_FLAG,
208
		.opt.flag = &ecparam_config.noout,
209
	},
210
	{
211
		.name = "out",
212
		.argname = "file",
213
		.desc = "Output file to write parameters to (default stdout)",
214
		.type = OPTION_ARG,
215
		.opt.arg = &ecparam_config.outfile,
216
	},
217
	{
218
		.name = "outform",
219
		.argname = "format",
220
		.desc = "Output format (DER or PEM)",
221
		.type = OPTION_ARG_FORMAT,
222
		.opt.value = &ecparam_config.outformat,
223
	},
224
	{
225
		.name = "param_enc",
226
		.argname = "type",
227
		.desc = "Specify EC parameter ASN.1 encoding type:\n"
228
		    "  explicit, named_curve (default)",
229
		.type = OPTION_ARG_FUNC,
230
		.opt.argfunc = ecparam_opt_enctype,
231
	},
232
	{
233
		.name = "text",
234
		.desc = "Print out the EC parameters in human readable form",
235
		.type = OPTION_FLAG,
236
		.opt.flag = &ecparam_config.text,
237
	},
238
	{NULL},
239
};
240
241
static void
242
ecparam_usage(void)
243
{
244
	fprintf(stderr, "usage: ecparam [-C] [-check] [-conv_form arg] "
245
	    " [-genkey]\n"
246
	    "    [-in file] [-inform DER | PEM] [-list_curves] [-name arg]\n"
247
	    "    [-no_seed] [-noout] [-out file] [-outform DER | PEM]\n"
248
	    "    [-param_enc arg] [-text]\n\n");
249
	options_usage(ecparam_options);
250
}
251
252
int
253
ecparam_main(int argc, char **argv)
254
{
255
	BIGNUM *ec_p = NULL, *ec_a = NULL, *ec_b = NULL, *ec_gen = NULL;
256
	BIGNUM *ec_order = NULL, *ec_cofactor = NULL;
257
	EC_GROUP *group = NULL;
258
	unsigned char *buffer = NULL;
259
	BIO *in = NULL, *out = NULL;
260
	int i, ret = 1;
261
262
	if (single_execution) {
263
		if (pledge("stdio rpath wpath cpath", NULL) == -1) {
264
			perror("pledge");
265
			exit(1);
266
		}
267
	}
268
269
	memset(&ecparam_config, 0, sizeof(ecparam_config));
270
	ecparam_config.asn1_flag = OPENSSL_EC_NAMED_CURVE;
271
	ecparam_config.form = POINT_CONVERSION_UNCOMPRESSED;
272
	ecparam_config.informat = FORMAT_PEM;
273
	ecparam_config.outformat = FORMAT_PEM;
274
275
	if (options_parse(argc, argv, ecparam_options, NULL, NULL) != 0) {
276
		ecparam_usage();
277
		goto end;
278
	}
279
280
	in = BIO_new(BIO_s_file());
281
	out = BIO_new(BIO_s_file());
282
	if ((in == NULL) || (out == NULL)) {
283
		ERR_print_errors(bio_err);
284
		goto end;
285
	}
286
	if (ecparam_config.infile == NULL)
287
		BIO_set_fp(in, stdin, BIO_NOCLOSE);
288
	else {
289
		if (BIO_read_filename(in, ecparam_config.infile) <= 0) {
290
			perror(ecparam_config.infile);
291
			goto end;
292
		}
293
	}
294
	if (ecparam_config.outfile == NULL) {
295
		BIO_set_fp(out, stdout, BIO_NOCLOSE);
296
	} else {
297
		if (BIO_write_filename(out, ecparam_config.outfile) <= 0) {
298
			perror(ecparam_config.outfile);
299
			goto end;
300
		}
301
	}
302
303
	if (ecparam_config.list_curves) {
304
		EC_builtin_curve *curves = NULL;
305
		size_t crv_len = 0;
306
		size_t n = 0;
307
308
		crv_len = EC_get_builtin_curves(NULL, 0);
309
310
		curves = reallocarray(NULL, crv_len, sizeof(EC_builtin_curve));
311
		if (curves == NULL)
312
			goto end;
313
314
		if (!EC_get_builtin_curves(curves, crv_len)) {
315
			free(curves);
316
			goto end;
317
		}
318
		for (n = 0; n < crv_len; n++) {
319
			const char *comment;
320
			const char *sname;
321
			comment = curves[n].comment;
322
			sname = OBJ_nid2sn(curves[n].nid);
323
			if (comment == NULL)
324
				comment = "CURVE DESCRIPTION NOT AVAILABLE";
325
			if (sname == NULL)
326
				sname = "";
327
328
			BIO_printf(out, "  %-10s: ", sname);
329
			BIO_printf(out, "%s\n", comment);
330
		}
331
332
		free(curves);
333
		ret = 0;
334
		goto end;
335
	}
336
	if (ecparam_config.curve_name != NULL) {
337
		int nid;
338
339
		/*
340
		 * workaround for the SECG curve names secp192r1 and
341
		 * secp256r1 (which are the same as the curves prime192v1 and
342
		 * prime256v1 defined in X9.62)
343
		 */
344
		if (!strcmp(ecparam_config.curve_name, "secp192r1")) {
345
			BIO_printf(bio_err, "using curve name prime192v1 "
346
			    "instead of secp192r1\n");
347
			nid = NID_X9_62_prime192v1;
348
		} else if (!strcmp(ecparam_config.curve_name, "secp256r1")) {
349
			BIO_printf(bio_err, "using curve name prime256v1 "
350
			    "instead of secp256r1\n");
351
			nid = NID_X9_62_prime256v1;
352
		} else
353
			nid = OBJ_sn2nid(ecparam_config.curve_name);
354
355
		if (nid == 0)
356
			nid = EC_curve_nist2nid(ecparam_config.curve_name);
357
358
		if (nid == 0) {
359
			BIO_printf(bio_err, "unknown curve name (%s)\n",
360
			    ecparam_config.curve_name);
361
			goto end;
362
		}
363
		group = EC_GROUP_new_by_curve_name(nid);
364
		if (group == NULL) {
365
			BIO_printf(bio_err, "unable to create curve (%s)\n",
366
			    ecparam_config.curve_name);
367
			goto end;
368
		}
369
		EC_GROUP_set_asn1_flag(group, ecparam_config.asn1_flag);
370
		EC_GROUP_set_point_conversion_form(group, ecparam_config.form);
371
	} else if (ecparam_config.informat == FORMAT_ASN1) {
372
		group = d2i_ECPKParameters_bio(in, NULL);
373
	} else if (ecparam_config.informat == FORMAT_PEM) {
374
		group = PEM_read_bio_ECPKParameters(in, NULL, NULL, NULL);
375
	} else {
376
		BIO_printf(bio_err, "bad input format specified\n");
377
		goto end;
378
	}
379
380
	if (group == NULL) {
381
		BIO_printf(bio_err,
382
		    "unable to load elliptic curve parameters\n");
383
		ERR_print_errors(bio_err);
384
		goto end;
385
	}
386
	if (ecparam_config.new_form)
387
		EC_GROUP_set_point_conversion_form(group, ecparam_config.form);
388
389
	if (ecparam_config.new_asn1_flag)
390
		EC_GROUP_set_asn1_flag(group, ecparam_config.asn1_flag);
391
392
	if (ecparam_config.no_seed)
393
		EC_GROUP_set_seed(group, NULL, 0);
394
395
	if (ecparam_config.text) {
396
		if (!ECPKParameters_print(out, group, 0))
397
			goto end;
398
	}
399
	if (ecparam_config.check) {
400
		BIO_printf(bio_err, "checking elliptic curve parameters: ");
401
		if (!EC_GROUP_check(group, NULL)) {
402
			BIO_printf(bio_err, "failed\n");
403
			ERR_print_errors(bio_err);
404
		} else
405
			BIO_printf(bio_err, "ok\n");
406
407
	}
408
	if (ecparam_config.C) {
409
		size_t buf_len = 0, tmp_len = 0;
410
		const EC_POINT *point;
411
		int is_prime, len = 0;
412
		const EC_METHOD *meth = EC_GROUP_method_of(group);
413
414
		if ((ec_p = BN_new()) == NULL || (ec_a = BN_new()) == NULL ||
415
		    (ec_b = BN_new()) == NULL || (ec_gen = BN_new()) == NULL ||
416
		    (ec_order = BN_new()) == NULL ||
417
		    (ec_cofactor = BN_new()) == NULL) {
418
			perror("malloc");
419
			goto end;
420
		}
421
		is_prime = (EC_METHOD_get_field_type(meth) ==
422
		    NID_X9_62_prime_field);
423
424
		if (is_prime) {
425
			if (!EC_GROUP_get_curve_GFp(group, ec_p, ec_a,
426
			    ec_b, NULL))
427
				goto end;
428
		} else {
429
			if (!EC_GROUP_get_curve_GF2m(group, ec_p, ec_a,
430
			    ec_b, NULL))
431
				goto end;
432
		}
433
434
		if ((point = EC_GROUP_get0_generator(group)) == NULL)
435
			goto end;
436
		if (!EC_POINT_point2bn(group, point,
437
			EC_GROUP_get_point_conversion_form(group), ec_gen,
438
			NULL))
439
			goto end;
440
		if (!EC_GROUP_get_order(group, ec_order, NULL))
441
			goto end;
442
		if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL))
443
			goto end;
444
445
		len = BN_num_bits(ec_order);
446
447
		if ((tmp_len = (size_t) BN_num_bytes(ec_p)) > buf_len)
448
			buf_len = tmp_len;
449
		if ((tmp_len = (size_t) BN_num_bytes(ec_a)) > buf_len)
450
			buf_len = tmp_len;
451
		if ((tmp_len = (size_t) BN_num_bytes(ec_b)) > buf_len)
452
			buf_len = tmp_len;
453
		if ((tmp_len = (size_t) BN_num_bytes(ec_gen)) > buf_len)
454
			buf_len = tmp_len;
455
		if ((tmp_len = (size_t) BN_num_bytes(ec_order)) > buf_len)
456
			buf_len = tmp_len;
457
		if ((tmp_len = (size_t) BN_num_bytes(ec_cofactor)) > buf_len)
458
			buf_len = tmp_len;
459
460
		buffer = malloc(buf_len);
461
462
		if (buffer == NULL) {
463
			perror("malloc");
464
			goto end;
465
		}
466
		ecparam_print_var(out, ec_p, "ec_p", len, buffer);
467
		ecparam_print_var(out, ec_a, "ec_a", len, buffer);
468
		ecparam_print_var(out, ec_b, "ec_b", len, buffer);
469
		ecparam_print_var(out, ec_gen, "ec_gen", len, buffer);
470
		ecparam_print_var(out, ec_order, "ec_order", len, buffer);
471
		ecparam_print_var(out, ec_cofactor, "ec_cofactor", len,
472
		    buffer);
473
474
		BIO_printf(out, "\n\n");
475
476
		BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n\t{\n", len);
477
		BIO_printf(out, "\tint ok=0;\n");
478
		BIO_printf(out, "\tEC_GROUP *group = NULL;\n");
479
		BIO_printf(out, "\tEC_POINT *point = NULL;\n");
480
		BIO_printf(out, "\tBIGNUM   *tmp_1 = NULL, *tmp_2 = NULL, "
481
		    "*tmp_3 = NULL;\n\n");
482
		BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_p_%d, "
483
		    "sizeof(ec_p_%d), NULL)) == NULL)\n\t\t"
484
		    "goto err;\n", len, len);
485
		BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_a_%d, "
486
		    "sizeof(ec_a_%d), NULL)) == NULL)\n\t\t"
487
		    "goto err;\n", len, len);
488
		BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_b_%d, "
489
		    "sizeof(ec_b_%d), NULL)) == NULL)\n\t\t"
490
		    "goto err;\n", len, len);
491
		if (is_prime) {
492
			BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_"
493
			    "GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)"
494
			    "\n\t\tgoto err;\n\n");
495
		} else {
496
			BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_"
497
			    "GF2m(tmp_1, tmp_2, tmp_3, NULL)) == NULL)"
498
			    "\n\t\tgoto err;\n\n");
499
		}
500
		BIO_printf(out, "\t/* build generator */\n");
501
		BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_gen_%d, "
502
		    "sizeof(ec_gen_%d), tmp_1)) == NULL)"
503
		    "\n\t\tgoto err;\n", len, len);
504
		BIO_printf(out, "\tpoint = EC_POINT_bn2point(group, tmp_1, "
505
		    "NULL, NULL);\n");
506
		BIO_printf(out, "\tif (point == NULL)\n\t\tgoto err;\n");
507
		BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_order_%d, "
508
		    "sizeof(ec_order_%d), tmp_2)) == NULL)"
509
		    "\n\t\tgoto err;\n", len, len);
510
		BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_cofactor_%d, "
511
		    "sizeof(ec_cofactor_%d), tmp_3)) == NULL)"
512
		    "\n\t\tgoto err;\n", len, len);
513
		BIO_printf(out, "\tif (!EC_GROUP_set_generator(group, point,"
514
		    " tmp_2, tmp_3))\n\t\tgoto err;\n");
515
		BIO_printf(out, "\n\tok=1;\n");
516
		BIO_printf(out, "err:\n");
517
		BIO_printf(out, "\tif (tmp_1)\n\t\tBN_free(tmp_1);\n");
518
		BIO_printf(out, "\tif (tmp_2)\n\t\tBN_free(tmp_2);\n");
519
		BIO_printf(out, "\tif (tmp_3)\n\t\tBN_free(tmp_3);\n");
520
		BIO_printf(out, "\tif (point)\n\t\tEC_POINT_free(point);\n");
521
		BIO_printf(out, "\tif (!ok)\n");
522
		BIO_printf(out, "\t\t{\n");
523
		BIO_printf(out, "\t\tEC_GROUP_free(group);\n");
524
		BIO_printf(out, "\t\tgroup = NULL;\n");
525
		BIO_printf(out, "\t\t}\n");
526
		BIO_printf(out, "\treturn(group);\n\t}\n");
527
	}
528
	if (!ecparam_config.noout) {
529
		if (ecparam_config.outformat == FORMAT_ASN1)
530
			i = i2d_ECPKParameters_bio(out, group);
531
		else if (ecparam_config.outformat == FORMAT_PEM)
532
			i = PEM_write_bio_ECPKParameters(out, group);
533
		else {
534
			BIO_printf(bio_err, "bad output format specified for"
535
			    " outfile\n");
536
			goto end;
537
		}
538
		if (!i) {
539
			BIO_printf(bio_err, "unable to write elliptic "
540
			    "curve parameters\n");
541
			ERR_print_errors(bio_err);
542
			goto end;
543
		}
544
	}
545
	if (ecparam_config.genkey) {
546
		EC_KEY *eckey = EC_KEY_new();
547
548
		if (eckey == NULL)
549
			goto end;
550
551
		if (EC_KEY_set_group(eckey, group) == 0) {
552
			EC_KEY_free(eckey);
553
			goto end;
554
		}
555
556
		if (!EC_KEY_generate_key(eckey)) {
557
			EC_KEY_free(eckey);
558
			goto end;
559
		}
560
		if (ecparam_config.outformat == FORMAT_ASN1)
561
			i = i2d_ECPrivateKey_bio(out, eckey);
562
		else if (ecparam_config.outformat == FORMAT_PEM)
563
			i = PEM_write_bio_ECPrivateKey(out, eckey, NULL,
564
			    NULL, 0, NULL, NULL);
565
		else {
566
			BIO_printf(bio_err, "bad output format specified "
567
			    "for outfile\n");
568
			EC_KEY_free(eckey);
569
			goto end;
570
		}
571
		EC_KEY_free(eckey);
572
	}
573
	ret = 0;
574
575
end:
576
	BN_free(ec_p);
577
	BN_free(ec_a);
578
	BN_free(ec_b);
579
	BN_free(ec_gen);
580
	BN_free(ec_order);
581
	BN_free(ec_cofactor);
582
583
	free(buffer);
584
585
	BIO_free(in);
586
	BIO_free_all(out);
587
	EC_GROUP_free(group);
588
589
	return (ret);
590
}
591
592
static int
593
ecparam_print_var(BIO * out, BIGNUM * in, const char *var,
594
    int len, unsigned char *buffer)
595
{
596
	BIO_printf(out, "static unsigned char %s_%d[] = {", var, len);
597
	if (BN_is_zero(in))
598
		BIO_printf(out, "\n\t0x00");
599
	else {
600
		int i, l;
601
602
		l = BN_bn2bin(in, buffer);
603
		for (i = 0; i < l - 1; i++) {
604
			if ((i % 12) == 0)
605
				BIO_printf(out, "\n\t");
606
			BIO_printf(out, "0x%02X,", buffer[i]);
607
		}
608
		if ((i % 12) == 0)
609
			BIO_printf(out, "\n\t");
610
		BIO_printf(out, "0x%02X", buffer[i]);
611
	}
612
	BIO_printf(out, "\n\t};\n\n");
613
	return 1;
614
}
615
#endif