Annotation of src/usr.bin/openssl/ecparam.c, Revision 1.20
1.20 ! tb 1: /* $OpenBSD: ecparam.c,v 1.19 2021/04/20 17:08:08 tb Exp $ */
1.1 jsing 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>
1.19 tb 89:
1.20 ! tb 90: int EC_GROUP_get_curve_GF2m(const EC_GROUP *, BIGNUM *, BIGNUM *, BIGNUM *,
! 91: BN_CTX *);
! 92: int EC_GROUP_get_curve_GFp(const EC_GROUP *, BIGNUM *, BIGNUM *, BIGNUM *,
! 93: BN_CTX *);
1.1 jsing 94:
1.3 jsing 95: static int ecparam_print_var(BIO *, BIGNUM *, const char *, int,
96: unsigned char *);
97:
98: static struct {
99: int C;
100: int asn1_flag;
101: int check;
102: char *curve_name;
103: point_conversion_form_t form;
104: int genkey;
105: char *infile;
106: int informat;
107: int list_curves;
108: int new_asn1_flag;
109: int new_form;
110: int no_seed;
111: int noout;
112: char *outfile;
113: int outformat;
114: int text;
115: } ecparam_config;
116:
117: static int
1.7 jsing 118: ecparam_opt_form(char *arg)
1.3 jsing 119: {
120: if (strcmp(arg, "compressed") == 0)
121: ecparam_config.form = POINT_CONVERSION_COMPRESSED;
122: else if (strcmp(arg, "uncompressed") == 0)
123: ecparam_config.form = POINT_CONVERSION_UNCOMPRESSED;
124: else if (strcmp(arg, "hybrid") == 0)
125: ecparam_config.form = POINT_CONVERSION_HYBRID;
126: else
127: return (1);
128:
129: ecparam_config.new_form = 1;
130: return (0);
131: }
1.1 jsing 132:
1.3 jsing 133: static int
1.7 jsing 134: ecparam_opt_enctype(char *arg)
1.3 jsing 135: {
136: if (strcmp(arg, "explicit") == 0)
137: ecparam_config.asn1_flag = 0;
138: else if (strcmp(arg, "named_curve") == 0)
139: ecparam_config.asn1_flag = OPENSSL_EC_NAMED_CURVE;
140: else
141: return (1);
142:
143: ecparam_config.new_asn1_flag = 1;
144: return (0);
145: }
146:
1.18 guenther 147: static const struct option ecparam_options[] = {
1.3 jsing 148: {
149: .name = "C",
150: .desc = "Convert the EC parameters into C code",
151: .type = OPTION_FLAG,
152: .opt.flag = &ecparam_config.C,
153: },
154: {
155: .name = "check",
156: .desc = "Validate the elliptic curve parameters",
157: .type = OPTION_FLAG,
158: .opt.flag = &ecparam_config.check,
159: },
160: {
161: .name = "conv_form",
162: .argname = "form",
163: .desc = "Specify point conversion form:\n"
164: " compressed, uncompressed (default), hybrid",
165: .type = OPTION_ARG_FUNC,
1.7 jsing 166: .opt.argfunc = ecparam_opt_form,
1.3 jsing 167: },
168: {
169: .name = "genkey",
170: .desc = "Generate an EC private key using the specified "
171: "parameters",
172: .type = OPTION_FLAG,
173: .opt.flag = &ecparam_config.genkey,
174: },
175: {
176: .name = "in",
177: .argname = "file",
178: .desc = "Input file to read parameters from (default stdin)",
179: .type = OPTION_ARG,
180: .opt.arg = &ecparam_config.infile,
181: },
182: {
183: .name = "inform",
184: .argname = "format",
185: .desc = "Input format (DER or PEM)",
186: .type = OPTION_ARG_FORMAT,
187: .opt.value = &ecparam_config.informat,
188: },
189: {
190: .name = "list_curves",
191: .desc = "Print list of all currently implemented EC "
192: "parameter names",
193: .type = OPTION_FLAG,
194: .opt.flag = &ecparam_config.list_curves,
195: },
196: {
197: .name = "name",
198: .argname = "curve",
199: .desc = "Use the EC parameters with the specified name",
200: .type = OPTION_ARG,
201: .opt.arg = &ecparam_config.curve_name,
202: },
203: {
204: .name = "no_seed",
205: .desc = "Do not output seed with explicit parameter encoding",
206: .type = OPTION_FLAG,
207: .opt.flag = &ecparam_config.no_seed,
208: },
209: {
210: .name = "noout",
211: .desc = "Do not output encoded version of EC parameters",
212: .type = OPTION_FLAG,
213: .opt.flag = &ecparam_config.noout,
214: },
215: {
216: .name = "out",
217: .argname = "file",
218: .desc = "Output file to write parameters to (default stdout)",
219: .type = OPTION_ARG,
220: .opt.arg = &ecparam_config.outfile,
221: },
222: {
223: .name = "outform",
224: .argname = "format",
225: .desc = "Output format (DER or PEM)",
226: .type = OPTION_ARG_FORMAT,
227: .opt.value = &ecparam_config.outformat,
228: },
229: {
230: .name = "param_enc",
231: .argname = "type",
232: .desc = "Specify EC parameter ASN.1 encoding type:\n"
233: " explicit, named_curve (default)",
234: .type = OPTION_ARG_FUNC,
1.7 jsing 235: .opt.argfunc = ecparam_opt_enctype,
1.3 jsing 236: },
237: {
238: .name = "text",
239: .desc = "Print out the EC parameters in human readable form",
240: .type = OPTION_FLAG,
241: .opt.flag = &ecparam_config.text,
242: },
1.4 bcook 243: {NULL},
1.3 jsing 244: };
1.1 jsing 245:
1.3 jsing 246: static void
247: ecparam_usage(void)
248: {
249: fprintf(stderr, "usage: ecparam [-C] [-check] [-conv_form arg] "
1.13 bcook 250: " [-genkey]\n"
1.3 jsing 251: " [-in file] [-inform DER | PEM] [-list_curves] [-name arg]\n"
252: " [-no_seed] [-noout] [-out file] [-outform DER | PEM]\n"
253: " [-param_enc arg] [-text]\n\n");
254: options_usage(ecparam_options);
255: }
1.1 jsing 256:
257: int
258: ecparam_main(int argc, char **argv)
259: {
1.3 jsing 260: BIGNUM *ec_p = NULL, *ec_a = NULL, *ec_b = NULL, *ec_gen = NULL;
261: BIGNUM *ec_order = NULL, *ec_cofactor = NULL;
1.1 jsing 262: EC_GROUP *group = NULL;
1.3 jsing 263: unsigned char *buffer = NULL;
1.1 jsing 264: BIO *in = NULL, *out = NULL;
1.3 jsing 265: int i, ret = 1;
1.14 doug 266:
267: if (single_execution) {
1.16 deraadt 268: if (pledge("stdio cpath wpath rpath", NULL) == -1) {
1.14 doug 269: perror("pledge");
1.15 doug 270: exit(1);
271: }
1.14 doug 272: }
1.1 jsing 273:
1.3 jsing 274: memset(&ecparam_config, 0, sizeof(ecparam_config));
275: ecparam_config.asn1_flag = OPENSSL_EC_NAMED_CURVE;
276: ecparam_config.form = POINT_CONVERSION_UNCOMPRESSED;
277: ecparam_config.informat = FORMAT_PEM;
278: ecparam_config.outformat = FORMAT_PEM;
1.1 jsing 279:
1.8 jsing 280: if (options_parse(argc, argv, ecparam_options, NULL, NULL) != 0) {
1.3 jsing 281: ecparam_usage();
1.1 jsing 282: goto end;
283: }
284:
285: in = BIO_new(BIO_s_file());
286: out = BIO_new(BIO_s_file());
287: if ((in == NULL) || (out == NULL)) {
288: ERR_print_errors(bio_err);
289: goto end;
290: }
1.3 jsing 291: if (ecparam_config.infile == NULL)
1.1 jsing 292: BIO_set_fp(in, stdin, BIO_NOCLOSE);
293: else {
1.3 jsing 294: if (BIO_read_filename(in, ecparam_config.infile) <= 0) {
295: perror(ecparam_config.infile);
1.1 jsing 296: goto end;
297: }
298: }
1.3 jsing 299: if (ecparam_config.outfile == NULL) {
1.1 jsing 300: BIO_set_fp(out, stdout, BIO_NOCLOSE);
301: } else {
1.3 jsing 302: if (BIO_write_filename(out, ecparam_config.outfile) <= 0) {
303: perror(ecparam_config.outfile);
1.1 jsing 304: goto end;
305: }
306: }
307:
1.3 jsing 308: if (ecparam_config.list_curves) {
1.1 jsing 309: EC_builtin_curve *curves = NULL;
310: size_t crv_len = 0;
311: size_t n = 0;
312:
313: crv_len = EC_get_builtin_curves(NULL, 0);
314:
315: curves = reallocarray(NULL, crv_len, sizeof(EC_builtin_curve));
316: if (curves == NULL)
317: goto end;
318:
319: if (!EC_get_builtin_curves(curves, crv_len)) {
320: free(curves);
321: goto end;
322: }
323: for (n = 0; n < crv_len; n++) {
324: const char *comment;
325: const char *sname;
326: comment = curves[n].comment;
327: sname = OBJ_nid2sn(curves[n].nid);
328: if (comment == NULL)
329: comment = "CURVE DESCRIPTION NOT AVAILABLE";
330: if (sname == NULL)
331: sname = "";
332:
333: BIO_printf(out, " %-10s: ", sname);
334: BIO_printf(out, "%s\n", comment);
335: }
336:
337: free(curves);
338: ret = 0;
339: goto end;
340: }
1.3 jsing 341: if (ecparam_config.curve_name != NULL) {
1.1 jsing 342: int nid;
343:
344: /*
345: * workaround for the SECG curve names secp192r1 and
346: * secp256r1 (which are the same as the curves prime192v1 and
347: * prime256v1 defined in X9.62)
348: */
1.3 jsing 349: if (!strcmp(ecparam_config.curve_name, "secp192r1")) {
1.1 jsing 350: BIO_printf(bio_err, "using curve name prime192v1 "
351: "instead of secp192r1\n");
352: nid = NID_X9_62_prime192v1;
1.3 jsing 353: } else if (!strcmp(ecparam_config.curve_name, "secp256r1")) {
1.1 jsing 354: BIO_printf(bio_err, "using curve name prime256v1 "
355: "instead of secp256r1\n");
356: nid = NID_X9_62_prime256v1;
357: } else
1.3 jsing 358: nid = OBJ_sn2nid(ecparam_config.curve_name);
1.9 jsing 359:
360: if (nid == 0)
361: nid = EC_curve_nist2nid(ecparam_config.curve_name);
1.1 jsing 362:
363: if (nid == 0) {
364: BIO_printf(bio_err, "unknown curve name (%s)\n",
1.3 jsing 365: ecparam_config.curve_name);
1.1 jsing 366: goto end;
367: }
368: group = EC_GROUP_new_by_curve_name(nid);
369: if (group == NULL) {
370: BIO_printf(bio_err, "unable to create curve (%s)\n",
1.3 jsing 371: ecparam_config.curve_name);
1.1 jsing 372: goto end;
373: }
1.3 jsing 374: EC_GROUP_set_asn1_flag(group, ecparam_config.asn1_flag);
375: EC_GROUP_set_point_conversion_form(group, ecparam_config.form);
376: } else if (ecparam_config.informat == FORMAT_ASN1) {
1.1 jsing 377: group = d2i_ECPKParameters_bio(in, NULL);
1.3 jsing 378: } else if (ecparam_config.informat == FORMAT_PEM) {
1.1 jsing 379: group = PEM_read_bio_ECPKParameters(in, NULL, NULL, NULL);
380: } else {
381: BIO_printf(bio_err, "bad input format specified\n");
382: goto end;
383: }
384:
385: if (group == NULL) {
386: BIO_printf(bio_err,
387: "unable to load elliptic curve parameters\n");
388: ERR_print_errors(bio_err);
389: goto end;
390: }
1.3 jsing 391: if (ecparam_config.new_form)
392: EC_GROUP_set_point_conversion_form(group, ecparam_config.form);
1.1 jsing 393:
1.3 jsing 394: if (ecparam_config.new_asn1_flag)
395: EC_GROUP_set_asn1_flag(group, ecparam_config.asn1_flag);
1.1 jsing 396:
1.3 jsing 397: if (ecparam_config.no_seed)
1.1 jsing 398: EC_GROUP_set_seed(group, NULL, 0);
1.3 jsing 399:
400: if (ecparam_config.text) {
1.1 jsing 401: if (!ECPKParameters_print(out, group, 0))
402: goto end;
403: }
1.3 jsing 404: if (ecparam_config.check) {
1.1 jsing 405: BIO_printf(bio_err, "checking elliptic curve parameters: ");
406: if (!EC_GROUP_check(group, NULL)) {
407: BIO_printf(bio_err, "failed\n");
408: ERR_print_errors(bio_err);
409: } else
410: BIO_printf(bio_err, "ok\n");
411:
412: }
1.3 jsing 413: if (ecparam_config.C) {
1.1 jsing 414: size_t buf_len = 0, tmp_len = 0;
415: const EC_POINT *point;
416: int is_prime, len = 0;
417: const EC_METHOD *meth = EC_GROUP_method_of(group);
418:
419: if ((ec_p = BN_new()) == NULL || (ec_a = BN_new()) == NULL ||
420: (ec_b = BN_new()) == NULL || (ec_gen = BN_new()) == NULL ||
421: (ec_order = BN_new()) == NULL ||
422: (ec_cofactor = BN_new()) == NULL) {
423: perror("malloc");
424: goto end;
425: }
426: is_prime = (EC_METHOD_get_field_type(meth) ==
427: NID_X9_62_prime_field);
428:
429: if (is_prime) {
430: if (!EC_GROUP_get_curve_GFp(group, ec_p, ec_a,
1.3 jsing 431: ec_b, NULL))
1.1 jsing 432: goto end;
433: } else {
1.5 jsing 434: if (!EC_GROUP_get_curve_GF2m(group, ec_p, ec_a,
435: ec_b, NULL))
436: goto end;
1.1 jsing 437: }
438:
439: if ((point = EC_GROUP_get0_generator(group)) == NULL)
440: goto end;
441: if (!EC_POINT_point2bn(group, point,
442: EC_GROUP_get_point_conversion_form(group), ec_gen,
443: NULL))
444: goto end;
445: if (!EC_GROUP_get_order(group, ec_order, NULL))
446: goto end;
447: if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL))
448: goto end;
449:
450: len = BN_num_bits(ec_order);
451:
452: if ((tmp_len = (size_t) BN_num_bytes(ec_p)) > buf_len)
453: buf_len = tmp_len;
454: if ((tmp_len = (size_t) BN_num_bytes(ec_a)) > buf_len)
455: buf_len = tmp_len;
456: if ((tmp_len = (size_t) BN_num_bytes(ec_b)) > buf_len)
457: buf_len = tmp_len;
458: if ((tmp_len = (size_t) BN_num_bytes(ec_gen)) > buf_len)
459: buf_len = tmp_len;
460: if ((tmp_len = (size_t) BN_num_bytes(ec_order)) > buf_len)
461: buf_len = tmp_len;
462: if ((tmp_len = (size_t) BN_num_bytes(ec_cofactor)) > buf_len)
463: buf_len = tmp_len;
464:
465: buffer = malloc(buf_len);
466:
467: if (buffer == NULL) {
468: perror("malloc");
469: goto end;
470: }
471: ecparam_print_var(out, ec_p, "ec_p", len, buffer);
472: ecparam_print_var(out, ec_a, "ec_a", len, buffer);
473: ecparam_print_var(out, ec_b, "ec_b", len, buffer);
474: ecparam_print_var(out, ec_gen, "ec_gen", len, buffer);
475: ecparam_print_var(out, ec_order, "ec_order", len, buffer);
476: ecparam_print_var(out, ec_cofactor, "ec_cofactor", len,
477: buffer);
478:
479: BIO_printf(out, "\n\n");
480:
481: BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n\t{\n", len);
482: BIO_printf(out, "\tint ok=0;\n");
483: BIO_printf(out, "\tEC_GROUP *group = NULL;\n");
484: BIO_printf(out, "\tEC_POINT *point = NULL;\n");
485: BIO_printf(out, "\tBIGNUM *tmp_1 = NULL, *tmp_2 = NULL, "
486: "*tmp_3 = NULL;\n\n");
487: BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_p_%d, "
488: "sizeof(ec_p_%d), NULL)) == NULL)\n\t\t"
489: "goto err;\n", len, len);
490: BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_a_%d, "
491: "sizeof(ec_a_%d), NULL)) == NULL)\n\t\t"
492: "goto err;\n", len, len);
493: BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_b_%d, "
494: "sizeof(ec_b_%d), NULL)) == NULL)\n\t\t"
495: "goto err;\n", len, len);
496: if (is_prime) {
497: BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_"
498: "GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)"
499: "\n\t\tgoto err;\n\n");
500: } else {
1.5 jsing 501: BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_"
502: "GF2m(tmp_1, tmp_2, tmp_3, NULL)) == NULL)"
503: "\n\t\tgoto err;\n\n");
1.1 jsing 504: }
505: BIO_printf(out, "\t/* build generator */\n");
506: BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_gen_%d, "
507: "sizeof(ec_gen_%d), tmp_1)) == NULL)"
508: "\n\t\tgoto err;\n", len, len);
509: BIO_printf(out, "\tpoint = EC_POINT_bn2point(group, tmp_1, "
510: "NULL, NULL);\n");
511: BIO_printf(out, "\tif (point == NULL)\n\t\tgoto err;\n");
512: BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_order_%d, "
513: "sizeof(ec_order_%d), tmp_2)) == NULL)"
514: "\n\t\tgoto err;\n", len, len);
515: BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_cofactor_%d, "
516: "sizeof(ec_cofactor_%d), tmp_3)) == NULL)"
517: "\n\t\tgoto err;\n", len, len);
518: BIO_printf(out, "\tif (!EC_GROUP_set_generator(group, point,"
519: " tmp_2, tmp_3))\n\t\tgoto err;\n");
520: BIO_printf(out, "\n\tok=1;\n");
521: BIO_printf(out, "err:\n");
522: BIO_printf(out, "\tif (tmp_1)\n\t\tBN_free(tmp_1);\n");
523: BIO_printf(out, "\tif (tmp_2)\n\t\tBN_free(tmp_2);\n");
524: BIO_printf(out, "\tif (tmp_3)\n\t\tBN_free(tmp_3);\n");
525: BIO_printf(out, "\tif (point)\n\t\tEC_POINT_free(point);\n");
526: BIO_printf(out, "\tif (!ok)\n");
527: BIO_printf(out, "\t\t{\n");
528: BIO_printf(out, "\t\tEC_GROUP_free(group);\n");
529: BIO_printf(out, "\t\tgroup = NULL;\n");
530: BIO_printf(out, "\t\t}\n");
531: BIO_printf(out, "\treturn(group);\n\t}\n");
532: }
1.3 jsing 533: if (!ecparam_config.noout) {
534: if (ecparam_config.outformat == FORMAT_ASN1)
1.1 jsing 535: i = i2d_ECPKParameters_bio(out, group);
1.3 jsing 536: else if (ecparam_config.outformat == FORMAT_PEM)
1.1 jsing 537: i = PEM_write_bio_ECPKParameters(out, group);
538: else {
539: BIO_printf(bio_err, "bad output format specified for"
540: " outfile\n");
541: goto end;
542: }
543: if (!i) {
544: BIO_printf(bio_err, "unable to write elliptic "
545: "curve parameters\n");
546: ERR_print_errors(bio_err);
547: goto end;
548: }
549: }
1.3 jsing 550: if (ecparam_config.genkey) {
1.1 jsing 551: EC_KEY *eckey = EC_KEY_new();
552:
553: if (eckey == NULL)
554: goto end;
555:
556: if (EC_KEY_set_group(eckey, group) == 0) {
557: EC_KEY_free(eckey);
558: goto end;
559: }
560:
561: if (!EC_KEY_generate_key(eckey)) {
562: EC_KEY_free(eckey);
563: goto end;
564: }
1.3 jsing 565: if (ecparam_config.outformat == FORMAT_ASN1)
1.1 jsing 566: i = i2d_ECPrivateKey_bio(out, eckey);
1.3 jsing 567: else if (ecparam_config.outformat == FORMAT_PEM)
1.1 jsing 568: i = PEM_write_bio_ECPrivateKey(out, eckey, NULL,
569: NULL, 0, NULL, NULL);
570: else {
571: BIO_printf(bio_err, "bad output format specified "
572: "for outfile\n");
573: EC_KEY_free(eckey);
574: goto end;
575: }
576: EC_KEY_free(eckey);
577: }
578: ret = 0;
1.6 jsing 579:
1.17 jsing 580: end:
1.6 jsing 581: BN_free(ec_p);
582: BN_free(ec_a);
583: BN_free(ec_b);
584: BN_free(ec_gen);
585: BN_free(ec_order);
586: BN_free(ec_cofactor);
587:
1.1 jsing 588: free(buffer);
1.6 jsing 589:
1.1 jsing 590: BIO_free(in);
1.6 jsing 591: BIO_free_all(out);
592: EC_GROUP_free(group);
1.1 jsing 593:
594: return (ret);
595: }
596:
597: static int
598: ecparam_print_var(BIO * out, BIGNUM * in, const char *var,
599: int len, unsigned char *buffer)
600: {
601: BIO_printf(out, "static unsigned char %s_%d[] = {", var, len);
602: if (BN_is_zero(in))
603: BIO_printf(out, "\n\t0x00");
604: else {
605: int i, l;
606:
607: l = BN_bn2bin(in, buffer);
608: for (i = 0; i < l - 1; i++) {
609: if ((i % 12) == 0)
610: BIO_printf(out, "\n\t");
611: BIO_printf(out, "0x%02X,", buffer[i]);
612: }
613: if ((i % 12) == 0)
614: BIO_printf(out, "\n\t");
615: BIO_printf(out, "0x%02X", buffer[i]);
616: }
617: BIO_printf(out, "\n\t};\n\n");
618: return 1;
619: }
620: #endif
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