File: | src/usr.bin/openssl/ecparam.c |
Warning: | line 597, column 31 Use of memory allocated with size zero |
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1 | /* $OpenBSD: ecparam.c,v 1.23 2023/03/06 14:32:06 tb 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 | } cfg; | |||
111 | ||||
112 | static int | |||
113 | ecparam_opt_form(char *arg) | |||
114 | { | |||
115 | if (strcmp(arg, "compressed") == 0) | |||
116 | cfg.form = POINT_CONVERSION_COMPRESSED; | |||
117 | else if (strcmp(arg, "uncompressed") == 0) | |||
118 | cfg.form = POINT_CONVERSION_UNCOMPRESSED; | |||
119 | else if (strcmp(arg, "hybrid") == 0) | |||
120 | cfg.form = POINT_CONVERSION_HYBRID; | |||
121 | else | |||
122 | return (1); | |||
123 | ||||
124 | cfg.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 | cfg.asn1_flag = 0; | |||
133 | else if (strcmp(arg, "named_curve") == 0) | |||
134 | cfg.asn1_flag = OPENSSL_EC_NAMED_CURVE0x001; | |||
135 | else | |||
136 | return (1); | |||
137 | ||||
138 | cfg.new_asn1_flag = 1; | |||
139 | return (0); | |||
140 | } | |||
141 | ||||
142 | static const struct option ecparam_options[] = { | |||
143 | { | |||
144 | .name = "C", | |||
145 | .desc = "Convert the EC parameters into C code", | |||
146 | .type = OPTION_FLAG, | |||
147 | .opt.flag = &cfg.C, | |||
148 | }, | |||
149 | { | |||
150 | .name = "check", | |||
151 | .desc = "Validate the elliptic curve parameters", | |||
152 | .type = OPTION_FLAG, | |||
153 | .opt.flag = &cfg.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 = &cfg.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 = &cfg.infile, | |||
176 | }, | |||
177 | { | |||
178 | .name = "inform", | |||
179 | .argname = "format", | |||
180 | .desc = "Input format (DER or PEM)", | |||
181 | .type = OPTION_ARG_FORMAT, | |||
182 | .opt.value = &cfg.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 = &cfg.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 = &cfg.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 = &cfg.no_seed, | |||
203 | }, | |||
204 | { | |||
205 | .name = "noout", | |||
206 | .desc = "Do not output encoded version of EC parameters", | |||
207 | .type = OPTION_FLAG, | |||
208 | .opt.flag = &cfg.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 = &cfg.outfile, | |||
216 | }, | |||
217 | { | |||
218 | .name = "outform", | |||
219 | .argname = "format", | |||
220 | .desc = "Output format (DER or PEM)", | |||
221 | .type = OPTION_ARG_FORMAT, | |||
222 | .opt.value = &cfg.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 = &cfg.text, | |||
237 | }, | |||
238 | {NULL((void *)0)}, | |||
239 | }; | |||
240 | ||||
241 | static void | |||
242 | ecparam_usage(void) | |||
243 | { | |||
244 | fprintf(stderr(&__sF[2]), "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((void *)0), *ec_a = NULL((void *)0), *ec_b = NULL((void *)0), *ec_gen = NULL((void *)0); | |||
256 | BIGNUM *ec_order = NULL((void *)0), *ec_cofactor = NULL((void *)0); | |||
257 | EC_GROUP *group = NULL((void *)0); | |||
258 | unsigned char *buffer = NULL((void *)0); | |||
259 | BIO *in = NULL((void *)0), *out = NULL((void *)0); | |||
260 | int i, ret = 1; | |||
261 | ||||
262 | if (pledge("stdio cpath wpath rpath", NULL((void *)0)) == -1) { | |||
| ||||
263 | perror("pledge"); | |||
264 | exit(1); | |||
265 | } | |||
266 | ||||
267 | memset(&cfg, 0, sizeof(cfg)); | |||
268 | cfg.asn1_flag = OPENSSL_EC_NAMED_CURVE0x001; | |||
269 | cfg.form = POINT_CONVERSION_UNCOMPRESSED; | |||
270 | cfg.informat = FORMAT_PEM3; | |||
271 | cfg.outformat = FORMAT_PEM3; | |||
272 | ||||
273 | if (options_parse(argc, argv, ecparam_options, NULL((void *)0), NULL((void *)0)) != 0) { | |||
274 | ecparam_usage(); | |||
275 | goto end; | |||
276 | } | |||
277 | ||||
278 | in = BIO_new(BIO_s_file()); | |||
279 | out = BIO_new(BIO_s_file()); | |||
280 | if ((in == NULL((void *)0)) || (out == NULL((void *)0))) { | |||
281 | ERR_print_errors(bio_err); | |||
282 | goto end; | |||
283 | } | |||
284 | if (cfg.infile == NULL((void *)0)) | |||
285 | BIO_set_fp(in, stdin, BIO_NOCLOSE)BIO_ctrl(in,106,0x00,(char *)(&__sF[0])); | |||
286 | else { | |||
287 | if (BIO_read_filename(in, cfg.infile)BIO_ctrl(in,108, 0x01|0x02,(char *)cfg.infile) <= 0) { | |||
288 | perror(cfg.infile); | |||
289 | goto end; | |||
290 | } | |||
291 | } | |||
292 | if (cfg.outfile == NULL((void *)0)) { | |||
293 | BIO_set_fp(out, stdout, BIO_NOCLOSE)BIO_ctrl(out,106,0x00,(char *)(&__sF[1])); | |||
294 | } else { | |||
295 | if (BIO_write_filename(out, cfg.outfile)BIO_ctrl(out,108, 0x01|0x04,cfg.outfile) <= 0) { | |||
296 | perror(cfg.outfile); | |||
297 | goto end; | |||
298 | } | |||
299 | } | |||
300 | ||||
301 | if (cfg.list_curves) { | |||
302 | EC_builtin_curve *curves = NULL((void *)0); | |||
303 | size_t crv_len = 0; | |||
304 | size_t n = 0; | |||
305 | ||||
306 | crv_len = EC_get_builtin_curves(NULL((void *)0), 0); | |||
307 | ||||
308 | curves = reallocarray(NULL((void *)0), crv_len, sizeof(EC_builtin_curve)); | |||
309 | if (curves == NULL((void *)0)) | |||
310 | goto end; | |||
311 | ||||
312 | if (!EC_get_builtin_curves(curves, crv_len)) { | |||
313 | free(curves); | |||
314 | goto end; | |||
315 | } | |||
316 | for (n = 0; n < crv_len; n++) { | |||
317 | const char *comment; | |||
318 | const char *sname; | |||
319 | comment = curves[n].comment; | |||
320 | sname = OBJ_nid2sn(curves[n].nid); | |||
321 | if (comment == NULL((void *)0)) | |||
322 | comment = "CURVE DESCRIPTION NOT AVAILABLE"; | |||
323 | if (sname == NULL((void *)0)) | |||
324 | sname = ""; | |||
325 | ||||
326 | BIO_printf(out, " %-10s: ", sname); | |||
327 | BIO_printf(out, "%s\n", comment); | |||
328 | } | |||
329 | ||||
330 | free(curves); | |||
331 | ret = 0; | |||
332 | goto end; | |||
333 | } | |||
334 | if (cfg.curve_name != NULL((void *)0)) { | |||
335 | int nid; | |||
336 | ||||
337 | /* | |||
338 | * workaround for the SECG curve names secp192r1 and | |||
339 | * secp256r1 (which are the same as the curves prime192v1 and | |||
340 | * prime256v1 defined in X9.62) | |||
341 | */ | |||
342 | if (!strcmp(cfg.curve_name, "secp192r1")) { | |||
343 | BIO_printf(bio_err, "using curve name prime192v1 " | |||
344 | "instead of secp192r1\n"); | |||
345 | nid = NID_X9_62_prime192v1409; | |||
346 | } else if (!strcmp(cfg.curve_name, "secp256r1")) { | |||
347 | BIO_printf(bio_err, "using curve name prime256v1 " | |||
348 | "instead of secp256r1\n"); | |||
349 | nid = NID_X9_62_prime256v1415; | |||
350 | } else | |||
351 | nid = OBJ_sn2nid(cfg.curve_name); | |||
352 | ||||
353 | if (nid == 0) | |||
354 | nid = EC_curve_nist2nid(cfg.curve_name); | |||
355 | ||||
356 | if (nid == 0) { | |||
357 | BIO_printf(bio_err, "unknown curve name (%s)\n", | |||
358 | cfg.curve_name); | |||
359 | goto end; | |||
360 | } | |||
361 | group = EC_GROUP_new_by_curve_name(nid); | |||
362 | if (group == NULL((void *)0)) { | |||
363 | BIO_printf(bio_err, "unable to create curve (%s)\n", | |||
364 | cfg.curve_name); | |||
365 | goto end; | |||
366 | } | |||
367 | EC_GROUP_set_asn1_flag(group, cfg.asn1_flag); | |||
368 | EC_GROUP_set_point_conversion_form(group, cfg.form); | |||
369 | } else if (cfg.informat == FORMAT_ASN11) { | |||
370 | group = d2i_ECPKParameters_bio(in, NULL)((EC_GROUP*)ASN1_d2i_bio( ((void *(*)(void)) (1 ? ((void *)0) : ((EC_GROUP *(*)(void))0))), ((d2i_of_void*) (1 ? d2i_ECPKParameters : ((EC_GROUP *(*)(EC_GROUP **,const unsigned char **,long))0 ))), in, ((void**) (1 ? ((void *)0) : (EC_GROUP**)0)))); | |||
371 | } else if (cfg.informat == FORMAT_PEM3) { | |||
372 | group = PEM_read_bio_ECPKParameters(in, NULL((void *)0), NULL((void *)0), NULL((void *)0)); | |||
373 | } else { | |||
374 | BIO_printf(bio_err, "bad input format specified\n"); | |||
375 | goto end; | |||
376 | } | |||
377 | ||||
378 | if (group == NULL((void *)0)) { | |||
379 | BIO_printf(bio_err, | |||
380 | "unable to load elliptic curve parameters\n"); | |||
381 | ERR_print_errors(bio_err); | |||
382 | goto end; | |||
383 | } | |||
384 | if (cfg.new_form) | |||
385 | EC_GROUP_set_point_conversion_form(group, cfg.form); | |||
386 | ||||
387 | if (cfg.new_asn1_flag) | |||
388 | EC_GROUP_set_asn1_flag(group, cfg.asn1_flag); | |||
389 | ||||
390 | if (cfg.no_seed) | |||
391 | EC_GROUP_set_seed(group, NULL((void *)0), 0); | |||
392 | ||||
393 | if (cfg.text) { | |||
394 | if (!ECPKParameters_print(out, group, 0)) | |||
395 | goto end; | |||
396 | } | |||
397 | if (cfg.check) { | |||
398 | BIO_printf(bio_err, "checking elliptic curve parameters: "); | |||
399 | if (!EC_GROUP_check(group, NULL((void *)0))) { | |||
400 | BIO_printf(bio_err, "failed\n"); | |||
401 | ERR_print_errors(bio_err); | |||
402 | } else | |||
403 | BIO_printf(bio_err, "ok\n"); | |||
404 | ||||
405 | } | |||
406 | if (cfg.C) { | |||
407 | size_t buf_len = 0, tmp_len = 0; | |||
408 | const EC_POINT *point; | |||
409 | int is_prime, len = 0; | |||
410 | const EC_METHOD *meth = EC_GROUP_method_of(group); | |||
411 | ||||
412 | if ((ec_p = BN_new()) == NULL((void *)0) || (ec_a = BN_new()) == NULL((void *)0) || | |||
413 | (ec_b = BN_new()) == NULL((void *)0) || (ec_gen = BN_new()) == NULL((void *)0) || | |||
414 | (ec_order = BN_new()) == NULL((void *)0) || | |||
415 | (ec_cofactor = BN_new()) == NULL((void *)0)) { | |||
416 | perror("malloc"); | |||
417 | goto end; | |||
418 | } | |||
419 | is_prime = (EC_METHOD_get_field_type(meth) == | |||
420 | NID_X9_62_prime_field406); | |||
421 | ||||
422 | if (!EC_GROUP_get_curve(group, ec_p, ec_a, ec_b, NULL((void *)0))) | |||
423 | goto end; | |||
424 | ||||
425 | if ((point = EC_GROUP_get0_generator(group)) == NULL((void *)0)) | |||
426 | goto end; | |||
427 | if (!EC_POINT_point2bn(group, point, | |||
428 | EC_GROUP_get_point_conversion_form(group), ec_gen, | |||
429 | NULL((void *)0))) | |||
430 | goto end; | |||
431 | if (!EC_GROUP_get_order(group, ec_order, NULL((void *)0))) | |||
432 | goto end; | |||
433 | if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL((void *)0))) | |||
434 | goto end; | |||
435 | ||||
436 | len = BN_num_bits(ec_order); | |||
437 | ||||
438 | if ((tmp_len = (size_t) BN_num_bytes(ec_p)((BN_num_bits(ec_p)+7)/8)) > buf_len) | |||
439 | buf_len = tmp_len; | |||
440 | if ((tmp_len = (size_t) BN_num_bytes(ec_a)((BN_num_bits(ec_a)+7)/8)) > buf_len) | |||
441 | buf_len = tmp_len; | |||
442 | if ((tmp_len = (size_t) BN_num_bytes(ec_b)((BN_num_bits(ec_b)+7)/8)) > buf_len) | |||
443 | buf_len = tmp_len; | |||
444 | if ((tmp_len = (size_t) BN_num_bytes(ec_gen)((BN_num_bits(ec_gen)+7)/8)) > buf_len) | |||
445 | buf_len = tmp_len; | |||
446 | if ((tmp_len = (size_t) BN_num_bytes(ec_order)((BN_num_bits(ec_order)+7)/8)) > buf_len) | |||
447 | buf_len = tmp_len; | |||
448 | if ((tmp_len = (size_t) BN_num_bytes(ec_cofactor)((BN_num_bits(ec_cofactor)+7)/8)) > buf_len) | |||
449 | buf_len = tmp_len; | |||
450 | ||||
451 | buffer = malloc(buf_len); | |||
452 | ||||
453 | if (buffer == NULL((void *)0)) { | |||
454 | perror("malloc"); | |||
455 | goto end; | |||
456 | } | |||
457 | ecparam_print_var(out, ec_p, "ec_p", len, buffer); | |||
458 | ecparam_print_var(out, ec_a, "ec_a", len, buffer); | |||
459 | ecparam_print_var(out, ec_b, "ec_b", len, buffer); | |||
460 | ecparam_print_var(out, ec_gen, "ec_gen", len, buffer); | |||
461 | ecparam_print_var(out, ec_order, "ec_order", len, buffer); | |||
462 | ecparam_print_var(out, ec_cofactor, "ec_cofactor", len, | |||
463 | buffer); | |||
464 | ||||
465 | BIO_printf(out, "\n\n"); | |||
466 | ||||
467 | BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n\t{\n", len); | |||
468 | BIO_printf(out, "\tint ok=0;\n"); | |||
469 | BIO_printf(out, "\tEC_GROUP *group = NULL;\n"); | |||
470 | BIO_printf(out, "\tEC_POINT *point = NULL;\n"); | |||
471 | BIO_printf(out, "\tBIGNUM *tmp_1 = NULL, *tmp_2 = NULL, " | |||
472 | "*tmp_3 = NULL;\n\n"); | |||
473 | BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_p_%d, " | |||
474 | "sizeof(ec_p_%d), NULL)) == NULL)\n\t\t" | |||
475 | "goto err;\n", len, len); | |||
476 | BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_a_%d, " | |||
477 | "sizeof(ec_a_%d), NULL)) == NULL)\n\t\t" | |||
478 | "goto err;\n", len, len); | |||
479 | BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_b_%d, " | |||
480 | "sizeof(ec_b_%d), NULL)) == NULL)\n\t\t" | |||
481 | "goto err;\n", len, len); | |||
482 | if (is_prime) { | |||
483 | BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_" | |||
484 | "GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)" | |||
485 | "\n\t\tgoto err;\n\n"); | |||
486 | } else { | |||
487 | BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_" | |||
488 | "GF2m(tmp_1, tmp_2, tmp_3, NULL)) == NULL)" | |||
489 | "\n\t\tgoto err;\n\n"); | |||
490 | } | |||
491 | BIO_printf(out, "\t/* build generator */\n"); | |||
492 | BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_gen_%d, " | |||
493 | "sizeof(ec_gen_%d), tmp_1)) == NULL)" | |||
494 | "\n\t\tgoto err;\n", len, len); | |||
495 | BIO_printf(out, "\tpoint = EC_POINT_bn2point(group, tmp_1, " | |||
496 | "NULL, NULL);\n"); | |||
497 | BIO_printf(out, "\tif (point == NULL)\n\t\tgoto err;\n"); | |||
498 | BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_order_%d, " | |||
499 | "sizeof(ec_order_%d), tmp_2)) == NULL)" | |||
500 | "\n\t\tgoto err;\n", len, len); | |||
501 | BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_cofactor_%d, " | |||
502 | "sizeof(ec_cofactor_%d), tmp_3)) == NULL)" | |||
503 | "\n\t\tgoto err;\n", len, len); | |||
504 | BIO_printf(out, "\tif (!EC_GROUP_set_generator(group, point," | |||
505 | " tmp_2, tmp_3))\n\t\tgoto err;\n"); | |||
506 | BIO_printf(out, "\n\tok=1;\n"); | |||
507 | BIO_printf(out, "err:\n"); | |||
508 | BIO_printf(out, "\tif (tmp_1)\n\t\tBN_free(tmp_1);\n"); | |||
509 | BIO_printf(out, "\tif (tmp_2)\n\t\tBN_free(tmp_2);\n"); | |||
510 | BIO_printf(out, "\tif (tmp_3)\n\t\tBN_free(tmp_3);\n"); | |||
511 | BIO_printf(out, "\tif (point)\n\t\tEC_POINT_free(point);\n"); | |||
512 | BIO_printf(out, "\tif (!ok)\n"); | |||
513 | BIO_printf(out, "\t\t{\n"); | |||
514 | BIO_printf(out, "\t\tEC_GROUP_free(group);\n"); | |||
515 | BIO_printf(out, "\t\tgroup = NULL;\n"); | |||
516 | BIO_printf(out, "\t\t}\n"); | |||
517 | BIO_printf(out, "\treturn(group);\n\t}\n"); | |||
518 | } | |||
519 | if (!cfg.noout) { | |||
520 | if (cfg.outformat == FORMAT_ASN11) | |||
521 | i = i2d_ECPKParameters_bio(out, group)(ASN1_i2d_bio(((i2d_of_void*) (1 ? i2d_ECPKParameters : ((int (*)(const EC_GROUP *,unsigned char **))0))), out, ((void*) ( 1 ? group : (const EC_GROUP*)0)))); | |||
522 | else if (cfg.outformat == FORMAT_PEM3) | |||
523 | i = PEM_write_bio_ECPKParameters(out, group); | |||
524 | else { | |||
525 | BIO_printf(bio_err, "bad output format specified for" | |||
526 | " outfile\n"); | |||
527 | goto end; | |||
528 | } | |||
529 | if (!i) { | |||
530 | BIO_printf(bio_err, "unable to write elliptic " | |||
531 | "curve parameters\n"); | |||
532 | ERR_print_errors(bio_err); | |||
533 | goto end; | |||
534 | } | |||
535 | } | |||
536 | if (cfg.genkey) { | |||
537 | EC_KEY *eckey = EC_KEY_new(); | |||
538 | ||||
539 | if (eckey == NULL((void *)0)) | |||
540 | goto end; | |||
541 | ||||
542 | if (EC_KEY_set_group(eckey, group) == 0) { | |||
543 | EC_KEY_free(eckey); | |||
544 | goto end; | |||
545 | } | |||
546 | ||||
547 | if (!EC_KEY_generate_key(eckey)) { | |||
548 | EC_KEY_free(eckey); | |||
549 | goto end; | |||
550 | } | |||
551 | if (cfg.outformat == FORMAT_ASN11) | |||
552 | i = i2d_ECPrivateKey_bio(out, eckey); | |||
553 | else if (cfg.outformat == FORMAT_PEM3) | |||
554 | i = PEM_write_bio_ECPrivateKey(out, eckey, NULL((void *)0), | |||
555 | NULL((void *)0), 0, NULL((void *)0), NULL((void *)0)); | |||
556 | else { | |||
557 | BIO_printf(bio_err, "bad output format specified " | |||
558 | "for outfile\n"); | |||
559 | EC_KEY_free(eckey); | |||
560 | goto end; | |||
561 | } | |||
562 | EC_KEY_free(eckey); | |||
563 | } | |||
564 | ret = 0; | |||
565 | ||||
566 | end: | |||
567 | BN_free(ec_p); | |||
568 | BN_free(ec_a); | |||
569 | BN_free(ec_b); | |||
570 | BN_free(ec_gen); | |||
571 | BN_free(ec_order); | |||
572 | BN_free(ec_cofactor); | |||
573 | ||||
574 | free(buffer); | |||
575 | ||||
576 | BIO_free(in); | |||
577 | BIO_free_all(out); | |||
578 | EC_GROUP_free(group); | |||
579 | ||||
580 | return (ret); | |||
581 | } | |||
582 | ||||
583 | static int | |||
584 | ecparam_print_var(BIO * out, BIGNUM * in, const char *var, | |||
585 | int len, unsigned char *buffer) | |||
586 | { | |||
587 | BIO_printf(out, "static unsigned char %s_%d[] = {", var, len); | |||
588 | if (BN_is_zero(in)) | |||
589 | BIO_printf(out, "\n\t0x00"); | |||
590 | else { | |||
591 | int i, l; | |||
592 | ||||
593 | l = BN_bn2bin(in, buffer); | |||
594 | for (i = 0; i < l - 1; i++) { | |||
595 | if ((i % 12) == 0) | |||
596 | BIO_printf(out, "\n\t"); | |||
597 | BIO_printf(out, "0x%02X,", buffer[i]); | |||
| ||||
598 | } | |||
599 | if ((i % 12) == 0) | |||
600 | BIO_printf(out, "\n\t"); | |||
601 | BIO_printf(out, "0x%02X", buffer[i]); | |||
602 | } | |||
603 | BIO_printf(out, "\n\t};\n\n"); | |||
604 | return 1; | |||
605 | } | |||
606 | #endif |