Annotation of src/usr.bin/openssl/ecparam.c, Revision 1.12
1.12 ! jsing 1: /* $OpenBSD: ecparam.c,v 1.11 2015/07/20 21:56:47 doug 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>
89:
1.3 jsing 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: char *engine;
99: point_conversion_form_t form;
100: int genkey;
101: char *infile;
102: int informat;
103: int list_curves;
104: int new_asn1_flag;
105: int new_form;
106: int no_seed;
107: int noout;
108: char *outfile;
109: int outformat;
110: int text;
111: } ecparam_config;
112:
113: static int
1.7 jsing 114: ecparam_opt_form(char *arg)
1.3 jsing 115: {
116: if (strcmp(arg, "compressed") == 0)
117: ecparam_config.form = POINT_CONVERSION_COMPRESSED;
118: else if (strcmp(arg, "uncompressed") == 0)
119: ecparam_config.form = POINT_CONVERSION_UNCOMPRESSED;
120: else if (strcmp(arg, "hybrid") == 0)
121: ecparam_config.form = POINT_CONVERSION_HYBRID;
122: else
123: return (1);
124:
125: ecparam_config.new_form = 1;
126: return (0);
127: }
1.1 jsing 128:
1.3 jsing 129: static int
1.7 jsing 130: ecparam_opt_enctype(char *arg)
1.3 jsing 131: {
132: if (strcmp(arg, "explicit") == 0)
133: ecparam_config.asn1_flag = 0;
134: else if (strcmp(arg, "named_curve") == 0)
135: ecparam_config.asn1_flag = OPENSSL_EC_NAMED_CURVE;
136: else
137: return (1);
138:
139: ecparam_config.new_asn1_flag = 1;
140: return (0);
141: }
142:
143: struct option ecparam_options[] = {
144: {
145: .name = "C",
146: .desc = "Convert the EC parameters into C code",
147: .type = OPTION_FLAG,
148: .opt.flag = &ecparam_config.C,
149: },
150: {
151: .name = "check",
152: .desc = "Validate the elliptic curve parameters",
153: .type = OPTION_FLAG,
154: .opt.flag = &ecparam_config.check,
155: },
156: {
157: .name = "conv_form",
158: .argname = "form",
159: .desc = "Specify point conversion form:\n"
160: " compressed, uncompressed (default), hybrid",
161: .type = OPTION_ARG_FUNC,
1.7 jsing 162: .opt.argfunc = ecparam_opt_form,
1.3 jsing 163: },
164: #ifndef OPENSSL_NO_ENGINE
165: {
166: .name = "engine",
167: .argname = "id",
168: .desc = "Use the engine specified by the given identifier",
169: .type = OPTION_ARG,
170: .opt.arg = &ecparam_config.engine,
171: },
172: #endif
173: {
174: .name = "genkey",
175: .desc = "Generate an EC private key using the specified "
176: "parameters",
177: .type = OPTION_FLAG,
178: .opt.flag = &ecparam_config.genkey,
179: },
180: {
181: .name = "in",
182: .argname = "file",
183: .desc = "Input file to read parameters from (default stdin)",
184: .type = OPTION_ARG,
185: .opt.arg = &ecparam_config.infile,
186: },
187: {
188: .name = "inform",
189: .argname = "format",
190: .desc = "Input format (DER or PEM)",
191: .type = OPTION_ARG_FORMAT,
192: .opt.value = &ecparam_config.informat,
193: },
194: {
195: .name = "list_curves",
196: .desc = "Print list of all currently implemented EC "
197: "parameter names",
198: .type = OPTION_FLAG,
199: .opt.flag = &ecparam_config.list_curves,
200: },
201: {
202: .name = "name",
203: .argname = "curve",
204: .desc = "Use the EC parameters with the specified name",
205: .type = OPTION_ARG,
206: .opt.arg = &ecparam_config.curve_name,
207: },
208: {
209: .name = "no_seed",
210: .desc = "Do not output seed with explicit parameter encoding",
211: .type = OPTION_FLAG,
212: .opt.flag = &ecparam_config.no_seed,
213: },
214: {
215: .name = "noout",
216: .desc = "Do not output encoded version of EC parameters",
217: .type = OPTION_FLAG,
218: .opt.flag = &ecparam_config.noout,
219: },
220: {
221: .name = "out",
222: .argname = "file",
223: .desc = "Output file to write parameters to (default stdout)",
224: .type = OPTION_ARG,
225: .opt.arg = &ecparam_config.outfile,
226: },
227: {
228: .name = "outform",
229: .argname = "format",
230: .desc = "Output format (DER or PEM)",
231: .type = OPTION_ARG_FORMAT,
232: .opt.value = &ecparam_config.outformat,
233: },
234: {
235: .name = "param_enc",
236: .argname = "type",
237: .desc = "Specify EC parameter ASN.1 encoding type:\n"
238: " explicit, named_curve (default)",
239: .type = OPTION_ARG_FUNC,
1.7 jsing 240: .opt.argfunc = ecparam_opt_enctype,
1.3 jsing 241: },
242: {
243: .name = "text",
244: .desc = "Print out the EC parameters in human readable form",
245: .type = OPTION_FLAG,
246: .opt.flag = &ecparam_config.text,
247: },
1.4 bcook 248: {NULL},
1.3 jsing 249: };
1.1 jsing 250:
1.3 jsing 251: static void
252: ecparam_usage(void)
253: {
254: fprintf(stderr, "usage: ecparam [-C] [-check] [-conv_form arg] "
255: "[-engine id] [-genkey]\n"
256: " [-in file] [-inform DER | PEM] [-list_curves] [-name arg]\n"
257: " [-no_seed] [-noout] [-out file] [-outform DER | PEM]\n"
258: " [-param_enc arg] [-text]\n\n");
259: options_usage(ecparam_options);
260: }
1.1 jsing 261:
262: int
263: ecparam_main(int argc, char **argv)
264: {
1.3 jsing 265: BIGNUM *ec_p = NULL, *ec_a = NULL, *ec_b = NULL, *ec_gen = NULL;
266: BIGNUM *ec_order = NULL, *ec_cofactor = NULL;
1.1 jsing 267: EC_GROUP *group = NULL;
1.3 jsing 268: unsigned char *buffer = NULL;
1.1 jsing 269: BIO *in = NULL, *out = NULL;
1.3 jsing 270: int i, ret = 1;
1.1 jsing 271:
1.3 jsing 272: memset(&ecparam_config, 0, sizeof(ecparam_config));
273: ecparam_config.asn1_flag = OPENSSL_EC_NAMED_CURVE;
274: ecparam_config.form = POINT_CONVERSION_UNCOMPRESSED;
275: ecparam_config.informat = FORMAT_PEM;
276: ecparam_config.outformat = FORMAT_PEM;
1.1 jsing 277:
1.8 jsing 278: if (options_parse(argc, argv, ecparam_options, NULL, NULL) != 0) {
1.3 jsing 279: ecparam_usage();
1.1 jsing 280: goto end;
281: }
282:
283: in = BIO_new(BIO_s_file());
284: out = BIO_new(BIO_s_file());
285: if ((in == NULL) || (out == NULL)) {
286: ERR_print_errors(bio_err);
287: goto end;
288: }
1.3 jsing 289: if (ecparam_config.infile == NULL)
1.1 jsing 290: BIO_set_fp(in, stdin, BIO_NOCLOSE);
291: else {
1.3 jsing 292: if (BIO_read_filename(in, ecparam_config.infile) <= 0) {
293: perror(ecparam_config.infile);
1.1 jsing 294: goto end;
295: }
296: }
1.3 jsing 297: if (ecparam_config.outfile == NULL) {
1.1 jsing 298: BIO_set_fp(out, stdout, BIO_NOCLOSE);
299: } else {
1.3 jsing 300: if (BIO_write_filename(out, ecparam_config.outfile) <= 0) {
301: perror(ecparam_config.outfile);
1.1 jsing 302: goto end;
303: }
304: }
305:
306: #ifndef OPENSSL_NO_ENGINE
1.3 jsing 307: setup_engine(bio_err, ecparam_config.engine, 0);
1.1 jsing 308: #endif
309:
1.3 jsing 310: if (ecparam_config.list_curves) {
1.1 jsing 311: EC_builtin_curve *curves = NULL;
312: size_t crv_len = 0;
313: size_t n = 0;
314:
315: crv_len = EC_get_builtin_curves(NULL, 0);
316:
317: curves = reallocarray(NULL, crv_len, sizeof(EC_builtin_curve));
318: if (curves == NULL)
319: goto end;
320:
321: if (!EC_get_builtin_curves(curves, crv_len)) {
322: free(curves);
323: goto end;
324: }
325: for (n = 0; n < crv_len; n++) {
326: const char *comment;
327: const char *sname;
328: comment = curves[n].comment;
329: sname = OBJ_nid2sn(curves[n].nid);
330: if (comment == NULL)
331: comment = "CURVE DESCRIPTION NOT AVAILABLE";
332: if (sname == NULL)
333: sname = "";
334:
335: BIO_printf(out, " %-10s: ", sname);
336: BIO_printf(out, "%s\n", comment);
337: }
338:
339: free(curves);
340: ret = 0;
341: goto end;
342: }
1.3 jsing 343: if (ecparam_config.curve_name != NULL) {
1.1 jsing 344: int nid;
345:
346: /*
347: * workaround for the SECG curve names secp192r1 and
348: * secp256r1 (which are the same as the curves prime192v1 and
349: * prime256v1 defined in X9.62)
350: */
1.3 jsing 351: if (!strcmp(ecparam_config.curve_name, "secp192r1")) {
1.1 jsing 352: BIO_printf(bio_err, "using curve name prime192v1 "
353: "instead of secp192r1\n");
354: nid = NID_X9_62_prime192v1;
1.3 jsing 355: } else if (!strcmp(ecparam_config.curve_name, "secp256r1")) {
1.1 jsing 356: BIO_printf(bio_err, "using curve name prime256v1 "
357: "instead of secp256r1\n");
358: nid = NID_X9_62_prime256v1;
359: } else
1.3 jsing 360: nid = OBJ_sn2nid(ecparam_config.curve_name);
1.9 jsing 361:
362: if (nid == 0)
363: nid = EC_curve_nist2nid(ecparam_config.curve_name);
1.1 jsing 364:
365: if (nid == 0) {
366: BIO_printf(bio_err, "unknown curve name (%s)\n",
1.3 jsing 367: ecparam_config.curve_name);
1.1 jsing 368: goto end;
369: }
370: group = EC_GROUP_new_by_curve_name(nid);
371: if (group == NULL) {
372: BIO_printf(bio_err, "unable to create curve (%s)\n",
1.3 jsing 373: ecparam_config.curve_name);
1.1 jsing 374: goto end;
375: }
1.3 jsing 376: EC_GROUP_set_asn1_flag(group, ecparam_config.asn1_flag);
377: EC_GROUP_set_point_conversion_form(group, ecparam_config.form);
378: } else if (ecparam_config.informat == FORMAT_ASN1) {
1.1 jsing 379: group = d2i_ECPKParameters_bio(in, NULL);
1.3 jsing 380: } else if (ecparam_config.informat == FORMAT_PEM) {
1.1 jsing 381: group = PEM_read_bio_ECPKParameters(in, NULL, NULL, NULL);
382: } else {
383: BIO_printf(bio_err, "bad input format specified\n");
384: goto end;
385: }
386:
387: if (group == NULL) {
388: BIO_printf(bio_err,
389: "unable to load elliptic curve parameters\n");
390: ERR_print_errors(bio_err);
391: goto end;
392: }
1.3 jsing 393: if (ecparam_config.new_form)
394: EC_GROUP_set_point_conversion_form(group, ecparam_config.form);
1.1 jsing 395:
1.3 jsing 396: if (ecparam_config.new_asn1_flag)
397: EC_GROUP_set_asn1_flag(group, ecparam_config.asn1_flag);
1.1 jsing 398:
1.3 jsing 399: if (ecparam_config.no_seed)
1.1 jsing 400: EC_GROUP_set_seed(group, NULL, 0);
1.3 jsing 401:
402: if (ecparam_config.text) {
1.1 jsing 403: if (!ECPKParameters_print(out, group, 0))
404: goto end;
405: }
1.3 jsing 406: if (ecparam_config.check) {
1.1 jsing 407: BIO_printf(bio_err, "checking elliptic curve parameters: ");
408: if (!EC_GROUP_check(group, NULL)) {
409: BIO_printf(bio_err, "failed\n");
410: ERR_print_errors(bio_err);
411: } else
412: BIO_printf(bio_err, "ok\n");
413:
414: }
1.3 jsing 415: if (ecparam_config.C) {
1.1 jsing 416: size_t buf_len = 0, tmp_len = 0;
417: const EC_POINT *point;
418: int is_prime, len = 0;
419: const EC_METHOD *meth = EC_GROUP_method_of(group);
420:
421: if ((ec_p = BN_new()) == NULL || (ec_a = BN_new()) == NULL ||
422: (ec_b = BN_new()) == NULL || (ec_gen = BN_new()) == NULL ||
423: (ec_order = BN_new()) == NULL ||
424: (ec_cofactor = BN_new()) == NULL) {
425: perror("malloc");
426: goto end;
427: }
428: is_prime = (EC_METHOD_get_field_type(meth) ==
429: NID_X9_62_prime_field);
430:
431: if (is_prime) {
432: if (!EC_GROUP_get_curve_GFp(group, ec_p, ec_a,
1.3 jsing 433: ec_b, NULL))
1.1 jsing 434: goto end;
435: } else {
1.5 jsing 436: if (!EC_GROUP_get_curve_GF2m(group, ec_p, ec_a,
437: ec_b, NULL))
438: goto end;
1.1 jsing 439: }
440:
441: if ((point = EC_GROUP_get0_generator(group)) == NULL)
442: goto end;
443: if (!EC_POINT_point2bn(group, point,
444: EC_GROUP_get_point_conversion_form(group), ec_gen,
445: NULL))
446: goto end;
447: if (!EC_GROUP_get_order(group, ec_order, NULL))
448: goto end;
449: if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL))
450: goto end;
451:
452: len = BN_num_bits(ec_order);
453:
454: if ((tmp_len = (size_t) BN_num_bytes(ec_p)) > buf_len)
455: buf_len = tmp_len;
456: if ((tmp_len = (size_t) BN_num_bytes(ec_a)) > buf_len)
457: buf_len = tmp_len;
458: if ((tmp_len = (size_t) BN_num_bytes(ec_b)) > buf_len)
459: buf_len = tmp_len;
460: if ((tmp_len = (size_t) BN_num_bytes(ec_gen)) > buf_len)
461: buf_len = tmp_len;
462: if ((tmp_len = (size_t) BN_num_bytes(ec_order)) > buf_len)
463: buf_len = tmp_len;
464: if ((tmp_len = (size_t) BN_num_bytes(ec_cofactor)) > buf_len)
465: buf_len = tmp_len;
466:
467: buffer = malloc(buf_len);
468:
469: if (buffer == NULL) {
470: perror("malloc");
471: goto end;
472: }
473: ecparam_print_var(out, ec_p, "ec_p", len, buffer);
474: ecparam_print_var(out, ec_a, "ec_a", len, buffer);
475: ecparam_print_var(out, ec_b, "ec_b", len, buffer);
476: ecparam_print_var(out, ec_gen, "ec_gen", len, buffer);
477: ecparam_print_var(out, ec_order, "ec_order", len, buffer);
478: ecparam_print_var(out, ec_cofactor, "ec_cofactor", len,
479: buffer);
480:
481: BIO_printf(out, "\n\n");
482:
483: BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n\t{\n", len);
484: BIO_printf(out, "\tint ok=0;\n");
485: BIO_printf(out, "\tEC_GROUP *group = NULL;\n");
486: BIO_printf(out, "\tEC_POINT *point = NULL;\n");
487: BIO_printf(out, "\tBIGNUM *tmp_1 = NULL, *tmp_2 = NULL, "
488: "*tmp_3 = NULL;\n\n");
489: BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_p_%d, "
490: "sizeof(ec_p_%d), NULL)) == NULL)\n\t\t"
491: "goto err;\n", len, len);
492: BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_a_%d, "
493: "sizeof(ec_a_%d), NULL)) == NULL)\n\t\t"
494: "goto err;\n", len, len);
495: BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_b_%d, "
496: "sizeof(ec_b_%d), NULL)) == NULL)\n\t\t"
497: "goto err;\n", len, len);
498: if (is_prime) {
499: BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_"
500: "GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)"
501: "\n\t\tgoto err;\n\n");
502: } else {
1.5 jsing 503: BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_"
504: "GF2m(tmp_1, tmp_2, tmp_3, NULL)) == NULL)"
505: "\n\t\tgoto err;\n\n");
1.1 jsing 506: }
507: BIO_printf(out, "\t/* build generator */\n");
508: BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_gen_%d, "
509: "sizeof(ec_gen_%d), tmp_1)) == NULL)"
510: "\n\t\tgoto err;\n", len, len);
511: BIO_printf(out, "\tpoint = EC_POINT_bn2point(group, tmp_1, "
512: "NULL, NULL);\n");
513: BIO_printf(out, "\tif (point == NULL)\n\t\tgoto err;\n");
514: BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_order_%d, "
515: "sizeof(ec_order_%d), tmp_2)) == NULL)"
516: "\n\t\tgoto err;\n", len, len);
517: BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_cofactor_%d, "
518: "sizeof(ec_cofactor_%d), tmp_3)) == NULL)"
519: "\n\t\tgoto err;\n", len, len);
520: BIO_printf(out, "\tif (!EC_GROUP_set_generator(group, point,"
521: " tmp_2, tmp_3))\n\t\tgoto err;\n");
522: BIO_printf(out, "\n\tok=1;\n");
523: BIO_printf(out, "err:\n");
524: BIO_printf(out, "\tif (tmp_1)\n\t\tBN_free(tmp_1);\n");
525: BIO_printf(out, "\tif (tmp_2)\n\t\tBN_free(tmp_2);\n");
526: BIO_printf(out, "\tif (tmp_3)\n\t\tBN_free(tmp_3);\n");
527: BIO_printf(out, "\tif (point)\n\t\tEC_POINT_free(point);\n");
528: BIO_printf(out, "\tif (!ok)\n");
529: BIO_printf(out, "\t\t{\n");
530: BIO_printf(out, "\t\tEC_GROUP_free(group);\n");
531: BIO_printf(out, "\t\tgroup = NULL;\n");
532: BIO_printf(out, "\t\t}\n");
533: BIO_printf(out, "\treturn(group);\n\t}\n");
534: }
1.3 jsing 535: if (!ecparam_config.noout) {
536: if (ecparam_config.outformat == FORMAT_ASN1)
1.1 jsing 537: i = i2d_ECPKParameters_bio(out, group);
1.3 jsing 538: else if (ecparam_config.outformat == FORMAT_PEM)
1.1 jsing 539: i = PEM_write_bio_ECPKParameters(out, group);
540: else {
541: BIO_printf(bio_err, "bad output format specified for"
542: " outfile\n");
543: goto end;
544: }
545: if (!i) {
546: BIO_printf(bio_err, "unable to write elliptic "
547: "curve parameters\n");
548: ERR_print_errors(bio_err);
549: goto end;
550: }
551: }
1.3 jsing 552: if (ecparam_config.genkey) {
1.1 jsing 553: EC_KEY *eckey = EC_KEY_new();
554:
555: if (eckey == NULL)
556: goto end;
557:
558: if (EC_KEY_set_group(eckey, group) == 0) {
559: EC_KEY_free(eckey);
560: goto end;
561: }
562:
563: if (!EC_KEY_generate_key(eckey)) {
564: EC_KEY_free(eckey);
565: goto end;
566: }
1.3 jsing 567: if (ecparam_config.outformat == FORMAT_ASN1)
1.1 jsing 568: i = i2d_ECPrivateKey_bio(out, eckey);
1.3 jsing 569: else if (ecparam_config.outformat == FORMAT_PEM)
1.1 jsing 570: i = PEM_write_bio_ECPrivateKey(out, eckey, NULL,
571: NULL, 0, NULL, NULL);
572: else {
573: BIO_printf(bio_err, "bad output format specified "
574: "for outfile\n");
575: EC_KEY_free(eckey);
576: goto end;
577: }
578: EC_KEY_free(eckey);
579: }
580: ret = 0;
1.6 jsing 581:
1.1 jsing 582: end:
1.6 jsing 583: BN_free(ec_p);
584: BN_free(ec_a);
585: BN_free(ec_b);
586: BN_free(ec_gen);
587: BN_free(ec_order);
588: BN_free(ec_cofactor);
589:
1.1 jsing 590: free(buffer);
1.6 jsing 591:
1.1 jsing 592: BIO_free(in);
1.6 jsing 593: BIO_free_all(out);
594: EC_GROUP_free(group);
1.1 jsing 595:
596: return (ret);
597: }
598:
599: static int
600: ecparam_print_var(BIO * out, BIGNUM * in, const char *var,
601: int len, unsigned char *buffer)
602: {
603: BIO_printf(out, "static unsigned char %s_%d[] = {", var, len);
604: if (BN_is_zero(in))
605: BIO_printf(out, "\n\t0x00");
606: else {
607: int i, l;
608:
609: l = BN_bn2bin(in, buffer);
610: for (i = 0; i < l - 1; i++) {
611: if ((i % 12) == 0)
612: BIO_printf(out, "\n\t");
613: BIO_printf(out, "0x%02X,", buffer[i]);
614: }
615: if ((i % 12) == 0)
616: BIO_printf(out, "\n\t");
617: BIO_printf(out, "0x%02X", buffer[i]);
618: }
619: BIO_printf(out, "\n\t};\n\n");
620: return 1;
621: }
622: #endif
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