ecparam.c revision 1.1.1.1.4.1
1285612Sdelphij/* apps/ecparam.c */ 2132451Sroberto/* 354359Sroberto * Written by Nils Larsch for the OpenSSL project. 4285612Sdelphij */ 5285612Sdelphij/* ==================================================================== 654359Sroberto * Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved. 754359Sroberto * 854359Sroberto * Redistribution and use in source and binary forms, with or without 954359Sroberto * modification, are permitted provided that the following conditions 1054359Sroberto * are met: 1154359Sroberto * 1254359Sroberto * 1. Redistributions of source code must retain the above copyright 1354359Sroberto * notice, this list of conditions and the following disclaimer. 1454359Sroberto * 15106163Sroberto * 2. Redistributions in binary form must reproduce the above copyright 1654359Sroberto * notice, this list of conditions and the following disclaimer in 17285612Sdelphij * the documentation and/or other materials provided with the 18285612Sdelphij * distribution. 19285612Sdelphij * 20285612Sdelphij * 3. All advertising materials mentioning features or use of this 21285612Sdelphij * software must display the following acknowledgment: 22285612Sdelphij * "This product includes software developed by the OpenSSL Project 23285612Sdelphij * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 24285612Sdelphij * 25285612Sdelphij * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 26285612Sdelphij * endorse or promote products derived from this software without 27285612Sdelphij * prior written permission. For written permission, please contact 28285612Sdelphij * openssl-core@openssl.org. 29285612Sdelphij * 30285612Sdelphij * 5. Products derived from this software may not be called "OpenSSL" 31285612Sdelphij * nor may "OpenSSL" appear in their names without prior written 32285612Sdelphij * permission of the OpenSSL Project. 33285612Sdelphij * 34285612Sdelphij * 6. Redistributions of any form whatsoever must retain the following 35285612Sdelphij * acknowledgment: 36285612Sdelphij * "This product includes software developed by the OpenSSL Project 37285612Sdelphij * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 38285612Sdelphij * 39285612Sdelphij * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 40285612Sdelphij * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 41285612Sdelphij * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 42285612Sdelphij * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 43285612Sdelphij * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 44285612Sdelphij * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 45285612Sdelphij * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 46285612Sdelphij * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47285612Sdelphij * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 48285612Sdelphij * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 49285612Sdelphij * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 50285612Sdelphij * OF THE POSSIBILITY OF SUCH DAMAGE. 51285612Sdelphij * ==================================================================== 52285612Sdelphij * 53285612Sdelphij * This product includes cryptographic software written by Eric Young 54285612Sdelphij * (eay@cryptsoft.com). This product includes software written by Tim 55285612Sdelphij * Hudson (tjh@cryptsoft.com). 56285612Sdelphij * 57285612Sdelphij */ 58285612Sdelphij/* ==================================================================== 59285612Sdelphij * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 60285612Sdelphij * 61285612Sdelphij * Portions of the attached software ("Contribution") are developed by 62285612Sdelphij * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project. 63285612Sdelphij * 64285612Sdelphij * The Contribution is licensed pursuant to the OpenSSL open source 65285612Sdelphij * license provided above. 66285612Sdelphij * 67285612Sdelphij * The elliptic curve binary polynomial software is originally written by 68285612Sdelphij * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems Laboratories. 69285612Sdelphij * 70285612Sdelphij */ 71285612Sdelphij 7254359Sroberto#include <openssl/opensslconf.h> 73200576Sroberto#ifndef OPENSSL_NO_EC 7454359Sroberto#include <assert.h> 75200576Sroberto#include <stdio.h> 76132451Sroberto#include <stdlib.h> 77132451Sroberto#include <time.h> 78132451Sroberto#include <string.h> 79132451Sroberto#include "apps.h" 8082498Sroberto#include <openssl/bio.h> 81132451Sroberto#include <openssl/err.h> 8254359Sroberto#include <openssl/bn.h> 8354359Sroberto#include <openssl/ec.h> 8454359Sroberto#include <openssl/x509.h> 8554359Sroberto#include <openssl/pem.h> 8654359Sroberto 8754359Sroberto#undef PROG 8854359Sroberto#define PROG ecparam_main 8954359Sroberto 90200576Sroberto/* -inform arg - input format - default PEM (DER or PEM) 91182007Sroberto * -outform arg - output format - default PEM 92285612Sdelphij * -in arg - input file - default stdin 93285612Sdelphij * -out arg - output file - default stdout 94285612Sdelphij * -noout - do not print the ec parameter 95285612Sdelphij * -text - print the ec parameters in text form 96285612Sdelphij * -check - validate the ec parameters 97285612Sdelphij * -C - print a 'C' function creating the parameters 98285612Sdelphij * -name arg - use the ec parameters with 'short name' name 99285612Sdelphij * -list_curves - prints a list of all currently available curve 'short names' 100285612Sdelphij * -conv_form arg - specifies the point conversion form 101285612Sdelphij * - possible values: compressed 102285612Sdelphij * uncompressed (default) 103285612Sdelphij * hybrid 104285612Sdelphij * -param_enc arg - specifies the way the ec parameters are encoded 105285612Sdelphij * in the asn1 der encoding 106285612Sdelphij * possible values: named_curve (default) 107285612Sdelphij * explicit 108285612Sdelphij * -no_seed - if 'explicit' parameters are choosen do not use the seed 109285612Sdelphij * -genkey - generate ec key 110285612Sdelphij * -rand file - files to use for random number input 111285612Sdelphij * -engine e - use engine e, possibly a hardware device 112285612Sdelphij */ 113285612Sdelphij 114285612Sdelphij 115285612Sdelphijstatic int ecparam_print_var(BIO *,BIGNUM *,const char *,int,unsigned char *); 116285612Sdelphij 117285612Sdelphijint MAIN(int, char **); 118289997Sglebius 119285612Sdelphijint MAIN(int argc, char **argv) 120285612Sdelphij { 121285612Sdelphij EC_GROUP *group = NULL; 122285612Sdelphij point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED; 123285612Sdelphij int new_form = 0; 124285612Sdelphij int asn1_flag = OPENSSL_EC_NAMED_CURVE; 125285612Sdelphij int new_asn1_flag = 0; 126285612Sdelphij char *curve_name = NULL, *inrand = NULL; 127285612Sdelphij int list_curves = 0, no_seed = 0, check = 0, 128285612Sdelphij badops = 0, text = 0, i, need_rand = 0, genkey = 0; 129285612Sdelphij char *infile = NULL, *outfile = NULL, *prog; 130182007Sroberto BIO *in = NULL, *out = NULL; 131182007Sroberto int informat, outformat, noout = 0, C = 0, ret = 1; 132285612Sdelphij char *engine = NULL; 133285612Sdelphij 134182007Sroberto BIGNUM *ec_p = NULL, *ec_a = NULL, *ec_b = NULL, 135200576Sroberto *ec_gen = NULL, *ec_order = NULL, *ec_cofactor = NULL; 136182007Sroberto unsigned char *buffer = NULL; 137182007Sroberto 138182007Sroberto apps_startup(); 139200576Sroberto 140285612Sdelphij if (bio_err == NULL) 141285612Sdelphij if ((bio_err=BIO_new(BIO_s_file())) != NULL) 142285612Sdelphij BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 143285612Sdelphij 144285612Sdelphij if (!load_config(bio_err, NULL)) 145285612Sdelphij goto end; 146285612Sdelphij 147285612Sdelphij informat=FORMAT_PEM; 148285612Sdelphij outformat=FORMAT_PEM; 149285612Sdelphij 150285612Sdelphij prog=argv[0]; 151285612Sdelphij argc--; 152182007Sroberto argv++; 153182007Sroberto while (argc >= 1) 154285612Sdelphij { 155285612Sdelphij if (strcmp(*argv,"-inform") == 0) 156285612Sdelphij { 157285612Sdelphij if (--argc < 1) goto bad; 158285612Sdelphij informat=str2fmt(*(++argv)); 159285612Sdelphij } 160285612Sdelphij else if (strcmp(*argv,"-outform") == 0) 161285612Sdelphij { 162285612Sdelphij if (--argc < 1) goto bad; 163285612Sdelphij outformat=str2fmt(*(++argv)); 164285612Sdelphij } 165285612Sdelphij else if (strcmp(*argv,"-in") == 0) 166285612Sdelphij { 167200576Sroberto if (--argc < 1) goto bad; 168200576Sroberto infile= *(++argv); 169285612Sdelphij } 170285612Sdelphij else if (strcmp(*argv,"-out") == 0) 171285612Sdelphij { 172285612Sdelphij if (--argc < 1) goto bad; 173285612Sdelphij outfile= *(++argv); 174285612Sdelphij } 175285612Sdelphij else if (strcmp(*argv,"-text") == 0) 176285612Sdelphij text = 1; 177285612Sdelphij else if (strcmp(*argv,"-C") == 0) 178285612Sdelphij C = 1; 179285612Sdelphij else if (strcmp(*argv,"-check") == 0) 180285612Sdelphij check = 1; 181285612Sdelphij else if (strcmp (*argv, "-name") == 0) 182285612Sdelphij { 183285612Sdelphij if (--argc < 1) 184285612Sdelphij goto bad; 185285612Sdelphij curve_name = *(++argv); 186285612Sdelphij } 187285612Sdelphij else if (strcmp(*argv, "-list_curves") == 0) 188285612Sdelphij list_curves = 1; 189285612Sdelphij else if (strcmp(*argv, "-conv_form") == 0) 190285612Sdelphij { 191285612Sdelphij if (--argc < 1) 192285612Sdelphij goto bad; 193182007Sroberto ++argv; 194182007Sroberto new_form = 1; 195285612Sdelphij if (strcmp(*argv, "compressed") == 0) 196285612Sdelphij form = POINT_CONVERSION_COMPRESSED; 197285612Sdelphij else if (strcmp(*argv, "uncompressed") == 0) 198285612Sdelphij form = POINT_CONVERSION_UNCOMPRESSED; 199285612Sdelphij else if (strcmp(*argv, "hybrid") == 0) 200285612Sdelphij form = POINT_CONVERSION_HYBRID; 201285612Sdelphij else 202285612Sdelphij goto bad; 203285612Sdelphij } 204285612Sdelphij else if (strcmp(*argv, "-param_enc") == 0) 205285612Sdelphij { 206285612Sdelphij if (--argc < 1) 207285612Sdelphij goto bad; 208285612Sdelphij ++argv; 209285612Sdelphij new_asn1_flag = 1; 210285612Sdelphij if (strcmp(*argv, "named_curve") == 0) 211285612Sdelphij asn1_flag = OPENSSL_EC_NAMED_CURVE; 212285612Sdelphij else if (strcmp(*argv, "explicit") == 0) 213285612Sdelphij asn1_flag = 0; 214285612Sdelphij else 215182007Sroberto goto bad; 216182007Sroberto } 217182007Sroberto else if (strcmp(*argv, "-no_seed") == 0) 218182007Sroberto no_seed = 1; 219285612Sdelphij else if (strcmp(*argv, "-noout") == 0) 220285612Sdelphij noout=1; 221285612Sdelphij else if (strcmp(*argv,"-genkey") == 0) 222285612Sdelphij { 223285612Sdelphij genkey=1; 224285612Sdelphij need_rand=1; 225200576Sroberto } 226200576Sroberto else if (strcmp(*argv, "-rand") == 0) 227200576Sroberto { 228200576Sroberto if (--argc < 1) goto bad; 229200576Sroberto inrand= *(++argv); 230200576Sroberto need_rand=1; 231200576Sroberto } 232200576Sroberto else if(strcmp(*argv, "-engine") == 0) 233200576Sroberto { 234200576Sroberto if (--argc < 1) goto bad; 235200576Sroberto engine = *(++argv); 236200576Sroberto } 237200576Sroberto else 238200576Sroberto { 239200576Sroberto BIO_printf(bio_err,"unknown option %s\n",*argv); 240200576Sroberto badops=1; 241200576Sroberto break; 242200576Sroberto } 243200576Sroberto argc--; 244200576Sroberto argv++; 245200576Sroberto } 246200576Sroberto 247200576Sroberto if (badops) 248200576Sroberto { 249200576Srobertobad: 250182007Sroberto BIO_printf(bio_err, "%s [options] <infile >outfile\n",prog); 251182007Sroberto BIO_printf(bio_err, "where options are\n"); 252285612Sdelphij BIO_printf(bio_err, " -inform arg input format - " 253182007Sroberto "default PEM (DER or PEM)\n"); 254285612Sdelphij BIO_printf(bio_err, " -outform arg output format - " 255285612Sdelphij "default PEM\n"); 256182007Sroberto BIO_printf(bio_err, " -in arg input file - " 257132451Sroberto "default stdin\n"); 258285612Sdelphij BIO_printf(bio_err, " -out arg output file - " 25954359Sroberto "default stdout\n"); 260285612Sdelphij BIO_printf(bio_err, " -noout do not print the " 261182007Sroberto "ec parameter\n"); 262132451Sroberto BIO_printf(bio_err, " -text print the ec " 263132451Sroberto "parameters in text form\n"); 264132451Sroberto BIO_printf(bio_err, " -check validate the ec " 26554359Sroberto "parameters\n"); 266289997Sglebius BIO_printf(bio_err, " -C print a 'C' " 267285612Sdelphij "function creating the parameters\n"); 268285612Sdelphij BIO_printf(bio_err, " -name arg use the " 269285612Sdelphij "ec parameters with 'short name' name\n"); 270285612Sdelphij BIO_printf(bio_err, " -list_curves prints a list of " 271285612Sdelphij "all currently available curve 'short names'\n"); 27254359Sroberto BIO_printf(bio_err, " -conv_form arg specifies the " 273132451Sroberto "point conversion form \n"); 27454359Sroberto BIO_printf(bio_err, " possible values:" 275289997Sglebius " compressed\n"); 276285612Sdelphij BIO_printf(bio_err, " " 27754359Sroberto " uncompressed (default)\n"); 278285612Sdelphij BIO_printf(bio_err, " " 27954359Sroberto " hybrid\n"); 280132451Sroberto BIO_printf(bio_err, " -param_enc arg specifies the way" 281285612Sdelphij " the ec parameters are encoded\n"); 282285612Sdelphij BIO_printf(bio_err, " in the asn1 der " 283285612Sdelphij "encoding\n"); 284285612Sdelphij BIO_printf(bio_err, " possible values:" 285285612Sdelphij " named_curve (default)\n"); 286285612Sdelphij BIO_printf(bio_err, " " 287132451Sroberto " explicit\n"); 28854359Sroberto BIO_printf(bio_err, " -no_seed if 'explicit'" 289132451Sroberto " parameters are choosen do not" 29056746Sroberto " use the seed\n"); 291285612Sdelphij BIO_printf(bio_err, " -genkey generate ec" 292285612Sdelphij " key\n"); 293285612Sdelphij BIO_printf(bio_err, " -rand file files to use for" 294132451Sroberto " random number input\n"); 295132451Sroberto BIO_printf(bio_err, " -engine e use engine e, " 296132451Sroberto "possibly a hardware device\n"); 297285612Sdelphij goto end; 298132451Sroberto } 299106163Sroberto 300285612Sdelphij ERR_load_crypto_strings(); 301200576Sroberto 302285612Sdelphij in=BIO_new(BIO_s_file()); 303285612Sdelphij out=BIO_new(BIO_s_file()); 304285612Sdelphij if ((in == NULL) || (out == NULL)) 305285612Sdelphij { 306285612Sdelphij ERR_print_errors(bio_err); 307200576Sroberto goto end; 308285612Sdelphij } 309285612Sdelphij 310285612Sdelphij if (infile == NULL) 311200576Sroberto BIO_set_fp(in,stdin,BIO_NOCLOSE); 312132451Sroberto else 313132451Sroberto { 314132451Sroberto if (BIO_read_filename(in,infile) <= 0) 31582498Sroberto { 316285612Sdelphij perror(infile); 317285612Sdelphij goto end; 318285612Sdelphij } 319285612Sdelphij } 320285612Sdelphij if (outfile == NULL) 321285612Sdelphij { 32254359Sroberto BIO_set_fp(out,stdout,BIO_NOCLOSE); 323285612Sdelphij#ifdef OPENSSL_SYS_VMS 324285612Sdelphij { 325285612Sdelphij BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 326132451Sroberto out = BIO_push(tmpbio, out); 327182007Sroberto } 328182007Sroberto#endif 329182007Sroberto } 33054359Sroberto else 331132451Sroberto { 332182007Sroberto if (BIO_write_filename(out,outfile) <= 0) 333285612Sdelphij { 334285612Sdelphij perror(outfile); 33554359Sroberto goto end; 336200576Sroberto } 337289997Sglebius } 338132451Sroberto 339132451Sroberto#ifndef OPENSSL_NO_ENGINE 34054359Sroberto setup_engine(bio_err, engine, 0); 341182007Sroberto#endif 34254359Sroberto 343132451Sroberto if (list_curves) 34454359Sroberto { 34554359Sroberto EC_builtin_curve *curves = NULL; 346132451Sroberto size_t crv_len = 0; 347285612Sdelphij size_t n = 0; 34854359Sroberto 34954359Sroberto crv_len = EC_get_builtin_curves(NULL, 0); 35054359Sroberto 35182498Sroberto curves = OPENSSL_malloc((int)(sizeof(EC_builtin_curve) * crv_len)); 352285612Sdelphij 353285612Sdelphij if (curves == NULL) 354200576Sroberto goto end; 355285612Sdelphij 356285612Sdelphij if (!EC_get_builtin_curves(curves, crv_len)) 357285612Sdelphij { 358285612Sdelphij OPENSSL_free(curves); 359285612Sdelphij goto end; 360285612Sdelphij } 361285612Sdelphij 362285612Sdelphij 363285612Sdelphij for (n = 0; n < crv_len; n++) 364285612Sdelphij { 365285612Sdelphij const char *comment; 366285612Sdelphij const char *sname; 367285612Sdelphij comment = curves[n].comment; 368285612Sdelphij sname = OBJ_nid2sn(curves[n].nid); 369285612Sdelphij if (comment == NULL) 370285612Sdelphij comment = "CURVE DESCRIPTION NOT AVAILABLE"; 371285612Sdelphij if (sname == NULL) 372285612Sdelphij sname = ""; 373285612Sdelphij 374285612Sdelphij BIO_printf(out, " %-10s: ", sname); 375285612Sdelphij BIO_printf(out, "%s\n", comment); 376285612Sdelphij } 377285612Sdelphij 378285612Sdelphij OPENSSL_free(curves); 379285612Sdelphij ret = 0; 380285612Sdelphij goto end; 381285612Sdelphij } 382285612Sdelphij 383285612Sdelphij if (curve_name != NULL) 384285612Sdelphij { 385285612Sdelphij int nid; 386285612Sdelphij 387285612Sdelphij /* workaround for the SECG curve names secp192r1 388285612Sdelphij * and secp256r1 (which are the same as the curves 389285612Sdelphij * prime192v1 and prime256v1 defined in X9.62) 390285612Sdelphij */ 391285612Sdelphij if (!strcmp(curve_name, "secp192r1")) 392285612Sdelphij { 393285612Sdelphij BIO_printf(bio_err, "using curve name prime192v1 " 394285612Sdelphij "instead of secp192r1\n"); 395285612Sdelphij nid = NID_X9_62_prime192v1; 396285612Sdelphij } 397285612Sdelphij else if (!strcmp(curve_name, "secp256r1")) 398285612Sdelphij { 399285612Sdelphij BIO_printf(bio_err, "using curve name prime256v1 " 400285612Sdelphij "instead of secp256r1\n"); 401285612Sdelphij nid = NID_X9_62_prime256v1; 402285612Sdelphij } 403285612Sdelphij else 404285612Sdelphij nid = OBJ_sn2nid(curve_name); 405285612Sdelphij 406285612Sdelphij if (nid == 0) 407285612Sdelphij { 408285612Sdelphij BIO_printf(bio_err, "unknown curve name (%s)\n", 409285612Sdelphij curve_name); 410285612Sdelphij goto end; 411285612Sdelphij } 412285612Sdelphij 413285612Sdelphij group = EC_GROUP_new_by_curve_name(nid); 414106163Sroberto if (group == NULL) 415285612Sdelphij { 416285612Sdelphij BIO_printf(bio_err, "unable to create curve (%s)\n", 41754359Sroberto curve_name); 418132451Sroberto goto end; 419132451Sroberto } 420132451Sroberto EC_GROUP_set_asn1_flag(group, asn1_flag); 421132451Sroberto EC_GROUP_set_point_conversion_form(group, form); 422200576Sroberto } 423132451Sroberto else if (informat == FORMAT_ASN1) 424285612Sdelphij { 42582498Sroberto group = d2i_ECPKParameters_bio(in, NULL); 426285612Sdelphij } 427132451Sroberto else if (informat == FORMAT_PEM) 428285612Sdelphij { 429285612Sdelphij group = PEM_read_bio_ECPKParameters(in,NULL,NULL,NULL); 430285612Sdelphij } 431285612Sdelphij else 43254359Sroberto { 433285612Sdelphij BIO_printf(bio_err, "bad input format specified\n"); 43454359Sroberto goto end; 435285612Sdelphij } 436132451Sroberto 437132451Sroberto if (group == NULL) 438285612Sdelphij { 439285612Sdelphij BIO_printf(bio_err, 440285612Sdelphij "unable to load elliptic curve parameters\n"); 441285612Sdelphij ERR_print_errors(bio_err); 442285612Sdelphij goto end; 443285612Sdelphij } 444285612Sdelphij 445285612Sdelphij if (new_form) 446285612Sdelphij EC_GROUP_set_point_conversion_form(group, form); 447285612Sdelphij 448132451Sroberto if (new_asn1_flag) 44954359Sroberto EC_GROUP_set_asn1_flag(group, asn1_flag); 450285612Sdelphij 451285612Sdelphij if (no_seed) 452285612Sdelphij { 453285612Sdelphij EC_GROUP_set_seed(group, NULL, 0); 454285612Sdelphij } 455285612Sdelphij 456285612Sdelphij if (text) 457285612Sdelphij { 458285612Sdelphij if (!ECPKParameters_print(out, group, 0)) 459285612Sdelphij goto end; 460285612Sdelphij } 461285612Sdelphij 462285612Sdelphij if (check) 463285612Sdelphij { 464285612Sdelphij if (group == NULL) 46554359Sroberto BIO_printf(bio_err, "no elliptic curve parameters\n"); 466285612Sdelphij BIO_printf(bio_err, "checking elliptic curve parameters: "); 467285612Sdelphij if (!EC_GROUP_check(group, NULL)) 468285612Sdelphij { 469200576Sroberto BIO_printf(bio_err, "failed\n"); 470200576Sroberto ERR_print_errors(bio_err); 471200576Sroberto } 472200576Sroberto else 473285612Sdelphij BIO_printf(bio_err, "ok\n"); 474132451Sroberto 475285612Sdelphij } 476285612Sdelphij 477106163Sroberto if (C) 478132451Sroberto { 479106163Sroberto size_t buf_len = 0, tmp_len = 0; 480182007Sroberto const EC_POINT *point; 481182007Sroberto int is_prime, len = 0; 482132451Sroberto const EC_METHOD *meth = EC_GROUP_method_of(group); 483132451Sroberto 484132451Sroberto if ((ec_p = BN_new()) == NULL || (ec_a = BN_new()) == NULL || 485132451Sroberto (ec_b = BN_new()) == NULL || (ec_gen = BN_new()) == NULL || 486132451Sroberto (ec_order = BN_new()) == NULL || 487132451Sroberto (ec_cofactor = BN_new()) == NULL ) 488200576Sroberto { 489132451Sroberto perror("OPENSSL_malloc"); 490200576Sroberto goto end; 491200576Sroberto } 492200576Sroberto 493132451Sroberto is_prime = (EC_METHOD_get_field_type(meth) == 494132451Sroberto NID_X9_62_prime_field); 495132451Sroberto 496132451Sroberto if (is_prime) 497132451Sroberto { 498132451Sroberto if (!EC_GROUP_get_curve_GFp(group, ec_p, ec_a, 499200576Sroberto ec_b, NULL)) 500132451Sroberto goto end; 501132451Sroberto } 50256746Sroberto else 503132451Sroberto { 504132451Sroberto /* TODO */ 505200576Sroberto goto end; 506132451Sroberto } 507132451Sroberto 508182007Sroberto if ((point = EC_GROUP_get0_generator(group)) == NULL) 509132451Sroberto goto end; 510200576Sroberto if (!EC_POINT_point2bn(group, point, 511132451Sroberto EC_GROUP_get_point_conversion_form(group), ec_gen, 512132451Sroberto NULL)) 513200576Sroberto goto end; 514132451Sroberto if (!EC_GROUP_get_order(group, ec_order, NULL)) 515132451Sroberto goto end; 516200576Sroberto if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL)) 517132451Sroberto goto end; 518132451Sroberto 519132451Sroberto if (!ec_p || !ec_a || !ec_b || !ec_gen || 520200576Sroberto !ec_order || !ec_cofactor) 521200576Sroberto goto end; 522200576Sroberto 523285612Sdelphij len = BN_num_bits(ec_order); 524285612Sdelphij 52554359Sroberto if ((tmp_len = (size_t)BN_num_bytes(ec_p)) > buf_len) 526285612Sdelphij buf_len = tmp_len; 527285612Sdelphij if ((tmp_len = (size_t)BN_num_bytes(ec_a)) > buf_len) 528285612Sdelphij buf_len = tmp_len; 529182007Sroberto if ((tmp_len = (size_t)BN_num_bytes(ec_b)) > buf_len) 530182007Sroberto buf_len = tmp_len; 531182007Sroberto if ((tmp_len = (size_t)BN_num_bytes(ec_gen)) > buf_len) 532132451Sroberto buf_len = tmp_len; 533182007Sroberto if ((tmp_len = (size_t)BN_num_bytes(ec_order)) > buf_len) 534182007Sroberto buf_len = tmp_len; 535182007Sroberto if ((tmp_len = (size_t)BN_num_bytes(ec_cofactor)) > buf_len) 536182007Sroberto buf_len = tmp_len; 537285612Sdelphij 538132451Sroberto buffer = (unsigned char *)OPENSSL_malloc(buf_len); 539132451Sroberto 540132451Sroberto if (buffer == NULL) 541182007Sroberto { 542182007Sroberto perror("OPENSSL_malloc"); 543285612Sdelphij goto end; 544182007Sroberto } 545132451Sroberto 546289997Sglebius ecparam_print_var(out, ec_p, "ec_p", len, buffer); 54782498Sroberto ecparam_print_var(out, ec_a, "ec_a", len, buffer); 548285612Sdelphij ecparam_print_var(out, ec_b, "ec_b", len, buffer); 549285612Sdelphij ecparam_print_var(out, ec_gen, "ec_gen", len, buffer); 550285612Sdelphij ecparam_print_var(out, ec_order, "ec_order", len, buffer); 551285612Sdelphij ecparam_print_var(out, ec_cofactor, "ec_cofactor", len, 552285612Sdelphij buffer); 553285612Sdelphij 554285612Sdelphij BIO_printf(out, "\n\n"); 555285612Sdelphij 556285612Sdelphij BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n\t{\n", len); 557285612Sdelphij BIO_printf(out, "\tint ok=0;\n"); 558298770Sdelphij BIO_printf(out, "\tEC_GROUP *group = NULL;\n"); 559285612Sdelphij BIO_printf(out, "\tEC_POINT *point = NULL;\n"); 560285612Sdelphij BIO_printf(out, "\tBIGNUM *tmp_1 = NULL, *tmp_2 = NULL, " 561285612Sdelphij "*tmp_3 = NULL;\n\n"); 562285612Sdelphij BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_p_%d, " 563285612Sdelphij "sizeof(ec_p_%d), NULL)) == NULL)\n\t\t" 564285612Sdelphij "goto err;\n", len, len); 565285612Sdelphij BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_a_%d, " 566285612Sdelphij "sizeof(ec_a_%d), NULL)) == NULL)\n\t\t" 567285612Sdelphij "goto err;\n", len, len); 568285612Sdelphij BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_b_%d, " 569285612Sdelphij "sizeof(ec_b_%d), NULL)) == NULL)\n\t\t" 570182007Sroberto "goto err;\n", len, len); 571182007Sroberto if (is_prime) 572285612Sdelphij { 573285612Sdelphij BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_" 574285612Sdelphij "GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)" 575285612Sdelphij "\n\t\tgoto err;\n\n"); 576285612Sdelphij } 577182007Sroberto else 578285612Sdelphij { 579182007Sroberto /* TODO */ 580182007Sroberto goto end; 58182498Sroberto } 582285612Sdelphij BIO_printf(out, "\t/* build generator */\n"); 583182007Sroberto BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_gen_%d, " 58482498Sroberto "sizeof(ec_gen_%d), tmp_1)) == NULL)" 585285612Sdelphij "\n\t\tgoto err;\n", len, len); 586285612Sdelphij BIO_printf(out, "\tpoint = EC_POINT_bn2point(group, tmp_1, " 587285612Sdelphij "NULL, NULL);\n"); 588285612Sdelphij BIO_printf(out, "\tif (point == NULL)\n\t\tgoto err;\n"); 589285612Sdelphij BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_order_%d, " 590285612Sdelphij "sizeof(ec_order_%d), tmp_2)) == NULL)" 591285612Sdelphij "\n\t\tgoto err;\n", len, len); 592285612Sdelphij BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_cofactor_%d, " 59382498Sroberto "sizeof(ec_cofactor_%d), tmp_3)) == NULL)" 59454359Sroberto "\n\t\tgoto err;\n", len, len); 595106163Sroberto BIO_printf(out, "\tif (!EC_GROUP_set_generator(group, point," 596285612Sdelphij " tmp_2, tmp_3))\n\t\tgoto err;\n"); 59754359Sroberto BIO_printf(out, "\n\tok=1;\n"); 59882498Sroberto BIO_printf(out, "err:\n"); 59982498Sroberto BIO_printf(out, "\tif (tmp_1)\n\t\tBN_free(tmp_1);\n"); 60054359Sroberto BIO_printf(out, "\tif (tmp_2)\n\t\tBN_free(tmp_2);\n"); 60154359Sroberto BIO_printf(out, "\tif (tmp_3)\n\t\tBN_free(tmp_3);\n"); 602285612Sdelphij BIO_printf(out, "\tif (point)\n\t\tEC_POINT_free(point);\n"); 603182007Sroberto BIO_printf(out, "\tif (!ok)\n"); 604182007Sroberto BIO_printf(out, "\t\t{\n"); 605182007Sroberto BIO_printf(out, "\t\tEC_GROUP_free(group);\n"); 606182007Sroberto BIO_printf(out, "\t\tgroup = NULL;\n"); 607182007Sroberto BIO_printf(out, "\t\t}\n"); 608200576Sroberto BIO_printf(out, "\treturn(group);\n\t}\n"); 609200576Sroberto } 610182007Sroberto 611182007Sroberto if (!noout) 612182007Sroberto { 613182007Sroberto if (outformat == FORMAT_ASN1) 614200576Sroberto i = i2d_ECPKParameters_bio(out, group); 615200576Sroberto else if (outformat == FORMAT_PEM) 616200576Sroberto i = PEM_write_bio_ECPKParameters(out, group); 617182007Sroberto else 618182007Sroberto { 619182007Sroberto BIO_printf(bio_err,"bad output format specified for" 620182007Sroberto " outfile\n"); 621182007Sroberto goto end; 622182007Sroberto } 623182007Sroberto if (!i) 624182007Sroberto { 625182007Sroberto BIO_printf(bio_err, "unable to write elliptic " 62654359Sroberto "curve parameters\n"); 627182007Sroberto ERR_print_errors(bio_err); 62854359Sroberto goto end; 629182007Sroberto } 630182007Sroberto } 631200576Sroberto 632182007Sroberto if (need_rand) 633200576Sroberto { 634200576Sroberto app_RAND_load_file(NULL, bio_err, (inrand != NULL)); 635132451Sroberto if (inrand != NULL) 636132451Sroberto BIO_printf(bio_err,"%ld semi-random bytes loaded\n", 637285612Sdelphij app_RAND_load_files(inrand)); 638285612Sdelphij } 639132451Sroberto 640132451Sroberto if (genkey) 641132451Sroberto { 642132451Sroberto EC_KEY *eckey = EC_KEY_new(); 643182007Sroberto 644200576Sroberto if (eckey == NULL) 645182007Sroberto goto end; 646182007Sroberto 64754359Sroberto assert(need_rand); 64854359Sroberto 649132451Sroberto if (EC_KEY_set_group(eckey, group) == 0) 650182007Sroberto goto end; 651182007Sroberto 652182007Sroberto if (!EC_KEY_generate_key(eckey)) 653182007Sroberto { 654182007Sroberto EC_KEY_free(eckey); 655182007Sroberto goto end; 656182007Sroberto } 657182007Sroberto if (outformat == FORMAT_ASN1) 658200576Sroberto i = i2d_ECPrivateKey_bio(out, eckey); 65954359Sroberto else if (outformat == FORMAT_PEM) 66054359Sroberto i = PEM_write_bio_ECPrivateKey(out, eckey, NULL, 661285612Sdelphij NULL, 0, NULL, NULL); 662285612Sdelphij else 663285612Sdelphij { 664285612Sdelphij BIO_printf(bio_err, "bad output format specified " 665285612Sdelphij "for outfile\n"); 666285612Sdelphij EC_KEY_free(eckey); 667285612Sdelphij goto end; 668285612Sdelphij } 669285612Sdelphij EC_KEY_free(eckey); 670285612Sdelphij } 671285612Sdelphij 672285612Sdelphij if (need_rand) 67354359Sroberto app_RAND_write_file(NULL, bio_err); 67454359Sroberto 675285612Sdelphij ret=0; 676285612Sdelphijend: 677285612Sdelphij if (ec_p) 678285612Sdelphij BN_free(ec_p); 679285612Sdelphij if (ec_a) 68054359Sroberto BN_free(ec_a); 68154359Sroberto if (ec_b) 68254359Sroberto BN_free(ec_b); 68354359Sroberto if (ec_gen) 68454359Sroberto BN_free(ec_gen); 68554359Sroberto if (ec_order) 68654359Sroberto BN_free(ec_order); 687200576Sroberto if (ec_cofactor) 688182007Sroberto BN_free(ec_cofactor); 68954359Sroberto if (buffer) 69054359Sroberto OPENSSL_free(buffer); 69154359Sroberto if (in != NULL) 69254359Sroberto BIO_free(in); 69354359Sroberto if (out != NULL) 694285612Sdelphij BIO_free_all(out); 695285612Sdelphij if (group != NULL) 696285612Sdelphij EC_GROUP_free(group); 697285612Sdelphij apps_shutdown(); 69854359Sroberto OPENSSL_EXIT(ret); 699285612Sdelphij} 700200576Sroberto 70154359Srobertostatic int ecparam_print_var(BIO *out, BIGNUM *in, const char *var, 702182007Sroberto int len, unsigned char *buffer) 703132451Sroberto { 704182007Sroberto BIO_printf(out, "static unsigned char %s_%d[] = {", var, len); 705132451Sroberto if (BN_is_zero(in)) 706132451Sroberto BIO_printf(out, "\n\t0x00"); 707182007Sroberto else 708132451Sroberto { 70954359Sroberto int i, l; 710106163Sroberto 711182007Sroberto l = BN_bn2bin(in, buffer); 712200576Sroberto for (i=0; i<l-1; i++) 713106163Sroberto { 71454359Sroberto if ((i%12) == 0) 715285612Sdelphij BIO_printf(out, "\n\t"); 716200576Sroberto BIO_printf(out, "0x%02X,", buffer[i]); 717200576Sroberto } 718182007Sroberto if ((i%12) == 0) 719200576Sroberto BIO_printf(out, "\n\t"); 720200576Sroberto BIO_printf(out, "0x%02X", buffer[i]); 721200576Sroberto } 722200576Sroberto BIO_printf(out, "\n\t};\n\n"); 723200576Sroberto return 1; 724200576Sroberto } 725200576Sroberto#else /* !OPENSSL_NO_EC */ 726182007Sroberto 727285612Sdelphij# if PEDANTIC 728285612Sdelphijstatic void *dummy=&dummy; 729285612Sdelphij# endif 730285612Sdelphij 731285612Sdelphij#endif 732200576Sroberto