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5dbd3efc | 1 | /* apps/ecparam.c */ |
14a7cfb3 | 2 | /* |
7eb18f12 | 3 | * Written by Nils Larsch for the OpenSSL project. |
14a7cfb3 | 4 | */ |
5dbd3efc | 5 | /* ==================================================================== |
9dd84053 | 6 | * Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved. |
5dbd3efc BM |
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 | */ | |
714df32e BM |
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 | * | |
714df32e BM |
67 | * The elliptic curve binary polynomial software is originally written by |
68 | * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems Laboratories. | |
69 | * | |
70 | */ | |
14a7cfb3 | 71 | #ifndef OPENSSL_NO_EC |
5dbd3efc BM |
72 | #include <assert.h> |
73 | #include <stdio.h> | |
74 | #include <stdlib.h> | |
75 | #include <time.h> | |
76 | #include <string.h> | |
77 | #include "apps.h" | |
78 | #include <openssl/bio.h> | |
79 | #include <openssl/err.h> | |
80 | #include <openssl/bn.h> | |
81 | #include <openssl/ec.h> | |
5dbd3efc BM |
82 | #include <openssl/x509.h> |
83 | #include <openssl/pem.h> | |
84 | ||
85 | #undef PROG | |
86 | #define PROG ecparam_main | |
87 | ||
e2aeb817 BM |
88 | /* -inform arg - input format - default PEM (DER or PEM) |
89 | * -outform arg - output format - default PEM | |
90 | * -in arg - input file - default stdin | |
91 | * -out arg - output file - default stdout | |
92 | * -noout - do not print the ec parameter | |
93 | * -text - print the ec parameters in text form | |
94 | * -check - validate the ec parameters | |
95 | * -C - print a 'C' function creating the parameters | |
96 | * -name arg - use the ec parameters with 'short name' name | |
97 | * -list_curves - prints a list of all currently available curve 'short names' | |
98 | * -conv_form arg - specifies the point conversion form | |
99 | * - possible values: compressed | |
100 | * uncompressed (default) | |
101 | * hybrid | |
102 | * -param_enc arg - specifies the way the ec parameters are encoded | |
103 | * in the asn1 der encoding | |
104 | * possible values: named_curve (default) | |
105 | * explicit | |
106 | * -no_seed - if 'explicit' parameters are choosen do not use the seed | |
107 | * -genkey - generate ec key | |
108 | * -rand file - files to use for random number input | |
109 | * -engine e - use engine e, possibly a hardware device | |
5dbd3efc BM |
110 | */ |
111 | ||
5dbd3efc BM |
112 | |
113 | static int ecparam_print_var(BIO *,BIGNUM *,const char *,int,unsigned char *); | |
114 | ||
115 | int MAIN(int, char **); | |
116 | ||
117 | int MAIN(int argc, char **argv) | |
118 | { | |
119 | EC_GROUP *group = NULL; | |
120 | point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED; | |
121 | int new_form = 0; | |
122 | int asn1_flag = OPENSSL_EC_NAMED_CURVE; | |
123 | int new_asn1_flag = 0; | |
124 | char *curve_name = NULL, *inrand = NULL; | |
125 | int list_curves = 0, no_seed = 0, check = 0, | |
126 | badops = 0, text = 0, i, need_rand = 0, genkey = 0; | |
127 | char *infile = NULL, *outfile = NULL, *prog; | |
128 | BIO *in = NULL, *out = NULL; | |
129 | int informat, outformat, noout = 0, C = 0, ret = 1; | |
58ae65cd | 130 | #ifndef OPENSSL_NO_ENGINE |
5dbd3efc | 131 | ENGINE *e = NULL; |
58ae65cd | 132 | #endif |
5dbd3efc BM |
133 | char *engine = NULL; |
134 | ||
135 | BIGNUM *ec_p = NULL, *ec_a = NULL, *ec_b = NULL, | |
136 | *ec_gen = NULL, *ec_order = NULL, *ec_cofactor = NULL; | |
137 | unsigned char *buffer = NULL; | |
138 | ||
139 | apps_startup(); | |
140 | ||
141 | if (bio_err == NULL) | |
142 | if ((bio_err=BIO_new(BIO_s_file())) != NULL) | |
143 | BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); | |
144 | ||
145 | if (!load_config(bio_err, NULL)) | |
146 | goto end; | |
147 | ||
148 | informat=FORMAT_PEM; | |
149 | outformat=FORMAT_PEM; | |
150 | ||
151 | prog=argv[0]; | |
152 | argc--; | |
153 | argv++; | |
154 | while (argc >= 1) | |
155 | { | |
156 | if (strcmp(*argv,"-inform") == 0) | |
157 | { | |
158 | if (--argc < 1) goto bad; | |
159 | informat=str2fmt(*(++argv)); | |
160 | } | |
161 | else if (strcmp(*argv,"-outform") == 0) | |
162 | { | |
163 | if (--argc < 1) goto bad; | |
164 | outformat=str2fmt(*(++argv)); | |
165 | } | |
166 | else if (strcmp(*argv,"-in") == 0) | |
167 | { | |
168 | if (--argc < 1) goto bad; | |
169 | infile= *(++argv); | |
170 | } | |
171 | else if (strcmp(*argv,"-out") == 0) | |
172 | { | |
173 | if (--argc < 1) goto bad; | |
174 | outfile= *(++argv); | |
175 | } | |
176 | else if (strcmp(*argv,"-text") == 0) | |
177 | text = 1; | |
178 | else if (strcmp(*argv,"-C") == 0) | |
179 | C = 1; | |
180 | else if (strcmp(*argv,"-check") == 0) | |
181 | check = 1; | |
182 | else if (strcmp (*argv, "-name") == 0) | |
183 | { | |
184 | if (--argc < 1) | |
185 | goto bad; | |
186 | curve_name = *(++argv); | |
187 | } | |
188 | else if (strcmp(*argv, "-list_curves") == 0) | |
189 | list_curves = 1; | |
190 | else if (strcmp(*argv, "-conv_form") == 0) | |
191 | { | |
192 | if (--argc < 1) | |
193 | goto bad; | |
194 | ++argv; | |
195 | new_form = 1; | |
196 | if (strcmp(*argv, "compressed") == 0) | |
197 | form = POINT_CONVERSION_COMPRESSED; | |
198 | else if (strcmp(*argv, "uncompressed") == 0) | |
199 | form = POINT_CONVERSION_UNCOMPRESSED; | |
200 | else if (strcmp(*argv, "hybrid") == 0) | |
201 | form = POINT_CONVERSION_HYBRID; | |
202 | else | |
203 | goto bad; | |
204 | } | |
205 | else if (strcmp(*argv, "-param_enc") == 0) | |
206 | { | |
207 | if (--argc < 1) | |
208 | goto bad; | |
209 | ++argv; | |
210 | new_asn1_flag = 1; | |
211 | if (strcmp(*argv, "named_curve") == 0) | |
212 | asn1_flag = OPENSSL_EC_NAMED_CURVE; | |
213 | else if (strcmp(*argv, "explicit") == 0) | |
214 | asn1_flag = 0; | |
215 | else | |
216 | goto bad; | |
217 | } | |
218 | else if (strcmp(*argv, "-no_seed") == 0) | |
219 | no_seed = 1; | |
220 | else if (strcmp(*argv, "-noout") == 0) | |
221 | noout=1; | |
222 | else if (strcmp(*argv,"-genkey") == 0) | |
223 | { | |
224 | genkey=1; | |
225 | need_rand=1; | |
226 | } | |
227 | else if (strcmp(*argv, "-rand") == 0) | |
228 | { | |
229 | if (--argc < 1) goto bad; | |
230 | inrand= *(++argv); | |
231 | need_rand=1; | |
232 | } | |
233 | else if(strcmp(*argv, "-engine") == 0) | |
234 | { | |
235 | if (--argc < 1) goto bad; | |
236 | engine = *(++argv); | |
237 | } | |
238 | else | |
239 | { | |
240 | BIO_printf(bio_err,"unknown option %s\n",*argv); | |
241 | badops=1; | |
242 | break; | |
243 | } | |
244 | argc--; | |
245 | argv++; | |
246 | } | |
247 | ||
248 | if (badops) | |
249 | { | |
250 | bad: | |
251 | BIO_printf(bio_err, "%s [options] <infile >outfile\n",prog); | |
252 | BIO_printf(bio_err, "where options are\n"); | |
e2aeb817 | 253 | BIO_printf(bio_err, " -inform arg input format - " |
5dbd3efc | 254 | "default PEM (DER or PEM)\n"); |
e2aeb817 | 255 | BIO_printf(bio_err, " -outform arg output format - " |
5dbd3efc | 256 | "default PEM\n"); |
e2aeb817 | 257 | BIO_printf(bio_err, " -in arg input file - " |
5dbd3efc | 258 | "default stdin\n"); |
e2aeb817 | 259 | BIO_printf(bio_err, " -out arg output file - " |
5dbd3efc | 260 | "default stdout\n"); |
e2aeb817 | 261 | BIO_printf(bio_err, " -noout do not print the " |
5dbd3efc | 262 | "ec parameter\n"); |
e2aeb817 | 263 | BIO_printf(bio_err, " -text print the ec " |
5dbd3efc | 264 | "parameters in text form\n"); |
e2aeb817 | 265 | BIO_printf(bio_err, " -check validate the ec " |
5dbd3efc | 266 | "parameters\n"); |
e2aeb817 | 267 | BIO_printf(bio_err, " -C print a 'C' " |
5dbd3efc | 268 | "function creating the parameters\n"); |
e2aeb817 | 269 | BIO_printf(bio_err, " -name arg use the " |
5dbd3efc | 270 | "ec parameters with 'short name' name\n"); |
e2aeb817 BM |
271 | BIO_printf(bio_err, " -list_curves prints a list of " |
272 | "all currently available curve 'short names'\n"); | |
273 | BIO_printf(bio_err, " -conv_form arg specifies the " | |
5dbd3efc | 274 | "point conversion form \n"); |
e2aeb817 | 275 | BIO_printf(bio_err, " possible values:" |
5dbd3efc | 276 | " compressed\n"); |
e2aeb817 | 277 | BIO_printf(bio_err, " " |
5dbd3efc | 278 | " uncompressed (default)\n"); |
e2aeb817 | 279 | BIO_printf(bio_err, " " |
5dbd3efc | 280 | " hybrid\n"); |
e2aeb817 | 281 | BIO_printf(bio_err, " -param_enc arg specifies the way" |
5dbd3efc | 282 | " the ec parameters are encoded\n"); |
e2aeb817 | 283 | BIO_printf(bio_err, " in the asn1 der " |
5dbd3efc | 284 | "encoding\n"); |
e2aeb817 | 285 | BIO_printf(bio_err, " possible values:" |
5dbd3efc | 286 | " named_curve (default)\n"); |
e2aeb817 BM |
287 | BIO_printf(bio_err, " " |
288 | " explicit\n"); | |
289 | BIO_printf(bio_err, " -no_seed if 'explicit'" | |
290 | " parameters are choosen do not" | |
291 | " use the seed\n"); | |
292 | BIO_printf(bio_err, " -genkey generate ec" | |
5dbd3efc | 293 | " key\n"); |
e2aeb817 | 294 | BIO_printf(bio_err, " -rand file files to use for" |
5dbd3efc | 295 | " random number input\n"); |
e2aeb817 BM |
296 | BIO_printf(bio_err, " -engine e use engine e, " |
297 | "possibly a hardware device\n"); | |
5dbd3efc BM |
298 | goto end; |
299 | } | |
300 | ||
301 | ERR_load_crypto_strings(); | |
302 | ||
303 | in=BIO_new(BIO_s_file()); | |
304 | out=BIO_new(BIO_s_file()); | |
305 | if ((in == NULL) || (out == NULL)) | |
306 | { | |
307 | ERR_print_errors(bio_err); | |
308 | goto end; | |
309 | } | |
310 | ||
311 | if (infile == NULL) | |
312 | BIO_set_fp(in,stdin,BIO_NOCLOSE); | |
313 | else | |
314 | { | |
315 | if (BIO_read_filename(in,infile) <= 0) | |
316 | { | |
317 | perror(infile); | |
318 | goto end; | |
319 | } | |
320 | } | |
321 | if (outfile == NULL) | |
322 | { | |
323 | BIO_set_fp(out,stdout,BIO_NOCLOSE); | |
324 | #ifdef OPENSSL_SYS_VMS | |
325 | { | |
326 | BIO *tmpbio = BIO_new(BIO_f_linebuffer()); | |
327 | out = BIO_push(tmpbio, out); | |
328 | } | |
329 | #endif | |
330 | } | |
331 | else | |
332 | { | |
333 | if (BIO_write_filename(out,outfile) <= 0) | |
334 | { | |
335 | perror(outfile); | |
336 | goto end; | |
337 | } | |
338 | } | |
339 | ||
58ae65cd | 340 | #ifndef OPENSSL_NO_ENGINE |
5dbd3efc | 341 | e = setup_engine(bio_err, engine, 0); |
58ae65cd | 342 | #endif |
5dbd3efc BM |
343 | |
344 | if (list_curves) | |
345 | { | |
65b1d31d BM |
346 | EC_builtin_curve *curves = NULL; |
347 | size_t crv_len = 0; | |
348 | size_t n = 0; | |
5dbd3efc | 349 | |
65b1d31d BM |
350 | crv_len = EC_get_builtin_curves(NULL, 0); |
351 | ||
7d727231 | 352 | curves = OPENSSL_malloc((int)(sizeof(EC_builtin_curve) * crv_len)); |
65b1d31d BM |
353 | |
354 | if (curves == NULL) | |
355 | goto end; | |
356 | ||
357 | if (!EC_get_builtin_curves(curves, crv_len)) | |
358 | { | |
359 | OPENSSL_free(curves); | |
360 | goto end; | |
361 | } | |
362 | ||
363 | ||
364 | for (n = 0; n < crv_len; n++) | |
7eb18f12 BM |
365 | { |
366 | const char *comment; | |
367 | const char *sname; | |
65b1d31d BM |
368 | comment = curves[n].comment; |
369 | sname = OBJ_nid2sn(curves[n].nid); | |
7eb18f12 | 370 | if (comment == NULL) |
65b1d31d | 371 | comment = "CURVE DESCRIPTION NOT AVAILABLE"; |
7eb18f12 | 372 | if (sname == NULL) |
428112ef | 373 | sname = ""; |
7eb18f12 | 374 | |
51487109 GT |
375 | BIO_printf(out, " %-10s: ", sname); |
376 | BIO_printf(out, "%s\n", comment); | |
7eb18f12 BM |
377 | } |
378 | ||
65b1d31d | 379 | OPENSSL_free(curves); |
5dbd3efc BM |
380 | ret = 0; |
381 | goto end; | |
382 | } | |
383 | ||
384 | if (curve_name != NULL) | |
385 | { | |
d745af4b BM |
386 | int nid; |
387 | ||
388 | /* workaround for the SECG curve names secp192r1 | |
389 | * and secp256r1 (which are the same as the curves | |
390 | * prime192v1 and prime256v1 defined in X9.62) | |
391 | */ | |
392 | if (!strcmp(curve_name, "secp192r1")) | |
393 | { | |
394 | BIO_printf(bio_err, "using curve name prime192v1 " | |
395 | "instead of secp192r1\n"); | |
396 | nid = NID_X9_62_prime192v1; | |
397 | } | |
398 | else if (!strcmp(curve_name, "secp256r1")) | |
399 | { | |
400 | BIO_printf(bio_err, "using curve name prime256v1 " | |
401 | "instead of secp256r1\n"); | |
402 | nid = NID_X9_62_prime256v1; | |
403 | } | |
404 | else | |
405 | nid = OBJ_sn2nid(curve_name); | |
5dbd3efc BM |
406 | |
407 | if (nid == 0) | |
408 | { | |
409 | BIO_printf(bio_err, "unknown curve name (%s)\n", | |
410 | curve_name); | |
411 | goto end; | |
412 | } | |
413 | ||
8b15c740 | 414 | group = EC_GROUP_new_by_curve_name(nid); |
5dbd3efc BM |
415 | if (group == NULL) |
416 | { | |
417 | BIO_printf(bio_err, "unable to create curve (%s)\n", | |
418 | curve_name); | |
419 | goto end; | |
420 | } | |
421 | EC_GROUP_set_asn1_flag(group, asn1_flag); | |
422 | EC_GROUP_set_point_conversion_form(group, form); | |
423 | } | |
424 | else if (informat == FORMAT_ASN1) | |
425 | { | |
426 | group = d2i_ECPKParameters_bio(in, NULL); | |
427 | } | |
428 | else if (informat == FORMAT_PEM) | |
429 | { | |
430 | group = PEM_read_bio_ECPKParameters(in,NULL,NULL,NULL); | |
431 | } | |
432 | else | |
433 | { | |
434 | BIO_printf(bio_err, "bad input format specified\n"); | |
435 | goto end; | |
436 | } | |
437 | ||
438 | if (group == NULL) | |
439 | { | |
440 | BIO_printf(bio_err, | |
441 | "unable to load elliptic curve parameters\n"); | |
442 | ERR_print_errors(bio_err); | |
443 | goto end; | |
444 | } | |
445 | ||
446 | if (new_form) | |
447 | EC_GROUP_set_point_conversion_form(group, form); | |
448 | ||
449 | if (new_asn1_flag) | |
450 | EC_GROUP_set_asn1_flag(group, asn1_flag); | |
451 | ||
452 | if (no_seed) | |
453 | { | |
454 | EC_GROUP_set_seed(group, NULL, 0); | |
455 | } | |
456 | ||
457 | if (text) | |
458 | { | |
459 | if (!ECPKParameters_print(out, group, 0)) | |
460 | goto end; | |
461 | } | |
462 | ||
463 | if (check) | |
464 | { | |
465 | if (group == NULL) | |
466 | BIO_printf(bio_err, "no elliptic curve parameters\n"); | |
467 | BIO_printf(bio_err, "checking elliptic curve parameters: "); | |
468 | if (!EC_GROUP_check(group, NULL)) | |
469 | { | |
470 | BIO_printf(bio_err, "failed\n"); | |
471 | ERR_print_errors(bio_err); | |
472 | } | |
473 | else | |
474 | BIO_printf(bio_err, "ok\n"); | |
475 | ||
476 | } | |
477 | ||
478 | if (C) | |
479 | { | |
480 | size_t buf_len = 0, tmp_len = 0; | |
481 | const EC_POINT *point; | |
482 | int is_prime, len = 0; | |
483 | const EC_METHOD *meth = EC_GROUP_method_of(group); | |
484 | ||
485 | if ((ec_p = BN_new()) == NULL || (ec_a = BN_new()) == NULL || | |
486 | (ec_b = BN_new()) == NULL || (ec_gen = BN_new()) == NULL || | |
487 | (ec_order = BN_new()) == NULL || | |
488 | (ec_cofactor = BN_new()) == NULL ) | |
489 | { | |
490 | perror("OPENSSL_malloc"); | |
491 | goto end; | |
492 | } | |
493 | ||
494 | is_prime = (EC_METHOD_get_field_type(meth) == | |
495 | NID_X9_62_prime_field); | |
496 | ||
497 | if (is_prime) | |
498 | { | |
499 | if (!EC_GROUP_get_curve_GFp(group, ec_p, ec_a, | |
500 | ec_b, NULL)) | |
501 | goto end; | |
502 | } | |
503 | else | |
504 | { | |
505 | /* TODO */ | |
506 | goto end; | |
507 | } | |
508 | ||
509 | if ((point = EC_GROUP_get0_generator(group)) == NULL) | |
510 | goto end; | |
511 | if (!EC_POINT_point2bn(group, point, | |
512 | EC_GROUP_get_point_conversion_form(group), ec_gen, | |
513 | NULL)) | |
514 | goto end; | |
515 | if (!EC_GROUP_get_order(group, ec_order, NULL)) | |
516 | goto end; | |
517 | if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL)) | |
518 | goto end; | |
519 | ||
520 | if (!ec_p || !ec_a || !ec_b || !ec_gen || | |
521 | !ec_order || !ec_cofactor) | |
522 | goto end; | |
523 | ||
524 | len = BN_num_bits(ec_order); | |
525 | ||
526 | if ((tmp_len = (size_t)BN_num_bytes(ec_p)) > buf_len) | |
527 | buf_len = tmp_len; | |
528 | if ((tmp_len = (size_t)BN_num_bytes(ec_a)) > buf_len) | |
529 | buf_len = tmp_len; | |
530 | if ((tmp_len = (size_t)BN_num_bytes(ec_b)) > buf_len) | |
531 | buf_len = tmp_len; | |
532 | if ((tmp_len = (size_t)BN_num_bytes(ec_gen)) > buf_len) | |
533 | buf_len = tmp_len; | |
534 | if ((tmp_len = (size_t)BN_num_bytes(ec_order)) > buf_len) | |
535 | buf_len = tmp_len; | |
536 | if ((tmp_len = (size_t)BN_num_bytes(ec_cofactor)) > buf_len) | |
537 | buf_len = tmp_len; | |
538 | ||
539 | buffer = (unsigned char *)OPENSSL_malloc(buf_len); | |
540 | ||
541 | if (buffer == NULL) | |
542 | { | |
543 | perror("OPENSSL_malloc"); | |
544 | goto end; | |
545 | } | |
546 | ||
547 | ecparam_print_var(out, ec_p, "ec_p", len, buffer); | |
548 | ecparam_print_var(out, ec_a, "ec_a", len, buffer); | |
549 | ecparam_print_var(out, ec_b, "ec_b", len, buffer); | |
550 | ecparam_print_var(out, ec_gen, "ec_gen", len, buffer); | |
551 | ecparam_print_var(out, ec_order, "ec_order", len, buffer); | |
552 | ecparam_print_var(out, ec_cofactor, "ec_cofactor", len, | |
553 | buffer); | |
554 | ||
555 | BIO_printf(out, "\n\n"); | |
556 | ||
557 | BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n\t{\n", len); | |
558 | BIO_printf(out, "\tint ok=0;\n"); | |
559 | BIO_printf(out, "\tEC_GROUP *group = NULL;\n"); | |
560 | BIO_printf(out, "\tEC_POINT *point = NULL;\n"); | |
561 | BIO_printf(out, "\tBIGNUM *tmp_1 = NULL, *tmp_2 = NULL, " | |
562 | "*tmp_3 = NULL;\n\n"); | |
563 | BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_p_%d, " | |
564 | "sizeof(ec_p_%d), NULL)) == NULL)\n\t\t" | |
565 | "goto err;\n", len, len); | |
566 | BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_a_%d, " | |
567 | "sizeof(ec_a_%d), NULL)) == NULL)\n\t\t" | |
568 | "goto err;\n", len, len); | |
569 | BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_b_%d, " | |
570 | "sizeof(ec_b_%d), NULL)) == NULL)\n\t\t" | |
571 | "goto err;\n", len, len); | |
572 | if (is_prime) | |
573 | { | |
574 | BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_" | |
575 | "GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)" | |
576 | "\n\t\tgoto err;\n\n"); | |
577 | } | |
578 | else | |
579 | { | |
580 | /* TODO */ | |
581 | goto end; | |
582 | } | |
583 | BIO_printf(out, "\t/* build generator */\n"); | |
584 | BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_gen_%d, " | |
585 | "sizeof(ec_gen_%d), tmp_1)) == NULL)" | |
586 | "\n\t\tgoto err;\n", len, len); | |
587 | BIO_printf(out, "\tpoint = EC_POINT_bn2point(group, tmp_1, " | |
588 | "NULL, NULL);\n"); | |
589 | BIO_printf(out, "\tif (point == NULL)\n\t\tgoto err;\n"); | |
590 | BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_order_%d, " | |
591 | "sizeof(ec_order_%d), tmp_2)) == NULL)" | |
592 | "\n\t\tgoto err;\n", len, len); | |
593 | BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_cofactor_%d, " | |
594 | "sizeof(ec_cofactor_%d), tmp_3)) == NULL)" | |
595 | "\n\t\tgoto err;\n", len, len); | |
596 | BIO_printf(out, "\tif (!EC_GROUP_set_generator(group, point," | |
597 | " tmp_2, tmp_3))\n\t\tgoto err;\n"); | |
598 | BIO_printf(out, "\n\tok=1;\n"); | |
599 | BIO_printf(out, "err:\n"); | |
600 | BIO_printf(out, "\tif (tmp_1)\n\t\tBN_free(tmp_1);\n"); | |
601 | BIO_printf(out, "\tif (tmp_2)\n\t\tBN_free(tmp_2);\n"); | |
602 | BIO_printf(out, "\tif (tmp_3)\n\t\tBN_free(tmp_3);\n"); | |
603 | BIO_printf(out, "\tif (point)\n\t\tEC_POINT_free(point);\n"); | |
604 | BIO_printf(out, "\tif (!ok)\n"); | |
605 | BIO_printf(out, "\t\t{\n"); | |
606 | BIO_printf(out, "\t\tEC_GROUP_free(group);\n"); | |
607 | BIO_printf(out, "\t\tgroup = NULL;\n"); | |
608 | BIO_printf(out, "\t\t}\n"); | |
609 | BIO_printf(out, "\treturn(group);\n\t}\n"); | |
610 | } | |
611 | ||
612 | if (!noout) | |
613 | { | |
614 | if (outformat == FORMAT_ASN1) | |
615 | i = i2d_ECPKParameters_bio(out, group); | |
616 | else if (outformat == FORMAT_PEM) | |
617 | i = PEM_write_bio_ECPKParameters(out, group); | |
618 | else | |
619 | { | |
620 | BIO_printf(bio_err,"bad output format specified for" | |
621 | " outfile\n"); | |
622 | goto end; | |
623 | } | |
624 | if (!i) | |
625 | { | |
626 | BIO_printf(bio_err, "unable to write elliptic " | |
627 | "curve parameters\n"); | |
628 | ERR_print_errors(bio_err); | |
629 | goto end; | |
630 | } | |
631 | } | |
632 | ||
633 | if (need_rand) | |
634 | { | |
635 | app_RAND_load_file(NULL, bio_err, (inrand != NULL)); | |
636 | if (inrand != NULL) | |
637 | BIO_printf(bio_err,"%ld semi-random bytes loaded\n", | |
638 | app_RAND_load_files(inrand)); | |
639 | } | |
640 | ||
641 | if (genkey) | |
642 | { | |
14a7cfb3 | 643 | EC_KEY *eckey = EC_KEY_new(); |
5dbd3efc | 644 | |
14a7cfb3 | 645 | if (eckey == NULL) |
5dbd3efc BM |
646 | goto end; |
647 | ||
648 | assert(need_rand); | |
649 | ||
9dd84053 NL |
650 | if (EC_KEY_set_group(eckey, group) == 0) |
651 | goto end; | |
5dbd3efc | 652 | |
14a7cfb3 | 653 | if (!EC_KEY_generate_key(eckey)) |
5dbd3efc | 654 | { |
14a7cfb3 | 655 | EC_KEY_free(eckey); |
5dbd3efc BM |
656 | goto end; |
657 | } | |
658 | if (outformat == FORMAT_ASN1) | |
14a7cfb3 | 659 | i = i2d_ECPrivateKey_bio(out, eckey); |
5dbd3efc | 660 | else if (outformat == FORMAT_PEM) |
14a7cfb3 | 661 | i = PEM_write_bio_ECPrivateKey(out, eckey, NULL, |
5dbd3efc BM |
662 | NULL, 0, NULL, NULL); |
663 | else | |
664 | { | |
665 | BIO_printf(bio_err, "bad output format specified " | |
666 | "for outfile\n"); | |
14a7cfb3 | 667 | EC_KEY_free(eckey); |
5dbd3efc BM |
668 | goto end; |
669 | } | |
14a7cfb3 | 670 | EC_KEY_free(eckey); |
5dbd3efc BM |
671 | } |
672 | ||
673 | if (need_rand) | |
674 | app_RAND_write_file(NULL, bio_err); | |
675 | ||
676 | ret=0; | |
677 | end: | |
678 | if (ec_p) | |
679 | BN_free(ec_p); | |
680 | if (ec_a) | |
681 | BN_free(ec_a); | |
682 | if (ec_b) | |
683 | BN_free(ec_b); | |
684 | if (ec_gen) | |
685 | BN_free(ec_gen); | |
686 | if (ec_order) | |
687 | BN_free(ec_order); | |
688 | if (ec_cofactor) | |
689 | BN_free(ec_cofactor); | |
690 | if (buffer) | |
691 | OPENSSL_free(buffer); | |
692 | if (in != NULL) | |
693 | BIO_free(in); | |
694 | if (out != NULL) | |
695 | BIO_free_all(out); | |
696 | if (group != NULL) | |
697 | EC_GROUP_free(group); | |
698 | apps_shutdown(); | |
1c3e4a36 | 699 | OPENSSL_EXIT(ret); |
5dbd3efc BM |
700 | } |
701 | ||
3a160f1d | 702 | static int ecparam_print_var(BIO *out, BIGNUM *in, const char *var, |
5dbd3efc BM |
703 | int len, unsigned char *buffer) |
704 | { | |
705 | BIO_printf(out, "static unsigned char %s_%d[] = {", var, len); | |
706 | if (BN_is_zero(in)) | |
707 | BIO_printf(out, "\n\t0x00"); | |
708 | else | |
709 | { | |
710 | int i, l; | |
711 | ||
712 | l = BN_bn2bin(in, buffer); | |
713 | for (i=0; i<l-1; i++) | |
714 | { | |
715 | if ((i%12) == 0) | |
716 | BIO_printf(out, "\n\t"); | |
717 | BIO_printf(out, "0x%02X,", buffer[i]); | |
718 | } | |
719 | if ((i%12) == 0) | |
720 | BIO_printf(out, "\n\t"); | |
721 | BIO_printf(out, "0x%02X", buffer[i]); | |
722 | } | |
723 | BIO_printf(out, "\n\t};\n\n"); | |
724 | return 1; | |
725 | } | |
726 | #endif |