1 /* apps/ec.c */ 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 #include <openssl/opensslconf.h> 60 #ifndef OPENSSL_NO_EC 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <string.h> 64 #include "apps.h" 65 #include <openssl/bio.h> 66 #include <openssl/err.h> 67 #include <openssl/evp.h> 68 #include <openssl/pem.h> 69 70 #undef PROG 71 #define PROG ec_main 72 73 /* -inform arg - input format - default PEM (one of DER, NET or PEM) 74 * -outform arg - output format - default PEM 75 * -in arg - input file - default stdin 76 * -out arg - output file - default stdout 77 * -des - encrypt output if PEM format with DES in cbc mode 78 * -text - print a text version 79 * -param_out - print the elliptic curve parameters 80 * -conv_form arg - specifies the point encoding form 81 * -param_enc arg - specifies the parameter encoding 82 */ 83 84 int MAIN(int, char **); 85 86 int MAIN(int argc, char **argv) 87 { 88 #ifndef OPENSSL_NO_ENGINE 89 ENGINE *e = NULL; 90 #endif 91 int ret = 1; 92 EC_KEY *eckey = NULL; 93 const EC_GROUP *group; 94 int i, badops = 0; 95 const EVP_CIPHER *enc = NULL; 96 BIO *in = NULL, *out = NULL; 97 int informat, outformat, text=0, noout=0; 98 int pubin = 0, pubout = 0, param_out = 0; 99 char *infile, *outfile, *prog, *engine; 100 char *passargin = NULL, *passargout = NULL; 101 char *passin = NULL, *passout = NULL; 102 point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED; 103 int new_form = 0; 104 int asn1_flag = OPENSSL_EC_NAMED_CURVE; 105 int new_asn1_flag = 0; 106 107 apps_startup(); 108 109 if (bio_err == NULL) 110 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 111 BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT); 112 113 if (!load_config(bio_err, NULL)) 114 goto end; 115 116 engine = NULL; 117 infile = NULL; 118 outfile = NULL; 119 informat = FORMAT_PEM; 120 outformat = FORMAT_PEM; 121 122 prog = argv[0]; 123 argc--; 124 argv++; 125 while (argc >= 1) 126 { 127 if (strcmp(*argv,"-inform") == 0) 128 { 129 if (--argc < 1) goto bad; 130 informat=str2fmt(*(++argv)); 131 } 132 else if (strcmp(*argv,"-outform") == 0) 133 { 134 if (--argc < 1) goto bad; 135 outformat=str2fmt(*(++argv)); 136 } 137 else if (strcmp(*argv,"-in") == 0) 138 { 139 if (--argc < 1) goto bad; 140 infile= *(++argv); 141 } 142 else if (strcmp(*argv,"-out") == 0) 143 { 144 if (--argc < 1) goto bad; 145 outfile= *(++argv); 146 } 147 else if (strcmp(*argv,"-passin") == 0) 148 { 149 if (--argc < 1) goto bad; 150 passargin= *(++argv); 151 } 152 else if (strcmp(*argv,"-passout") == 0) 153 { 154 if (--argc < 1) goto bad; 155 passargout= *(++argv); 156 } 157 else if (strcmp(*argv, "-engine") == 0) 158 { 159 if (--argc < 1) goto bad; 160 engine= *(++argv); 161 } 162 else if (strcmp(*argv, "-noout") == 0) 163 noout = 1; 164 else if (strcmp(*argv, "-text") == 0) 165 text = 1; 166 else if (strcmp(*argv, "-conv_form") == 0) 167 { 168 if (--argc < 1) 169 goto bad; 170 ++argv; 171 new_form = 1; 172 if (strcmp(*argv, "compressed") == 0) 173 form = POINT_CONVERSION_COMPRESSED; 174 else if (strcmp(*argv, "uncompressed") == 0) 175 form = POINT_CONVERSION_UNCOMPRESSED; 176 else if (strcmp(*argv, "hybrid") == 0) 177 form = POINT_CONVERSION_HYBRID; 178 else 179 goto bad; 180 } 181 else if (strcmp(*argv, "-param_enc") == 0) 182 { 183 if (--argc < 1) 184 goto bad; 185 ++argv; 186 new_asn1_flag = 1; 187 if (strcmp(*argv, "named_curve") == 0) 188 asn1_flag = OPENSSL_EC_NAMED_CURVE; 189 else if (strcmp(*argv, "explicit") == 0) 190 asn1_flag = 0; 191 else 192 goto bad; 193 } 194 else if (strcmp(*argv, "-param_out") == 0) 195 param_out = 1; 196 else if (strcmp(*argv, "-pubin") == 0) 197 pubin=1; 198 else if (strcmp(*argv, "-pubout") == 0) 199 pubout=1; 200 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL) 201 { 202 BIO_printf(bio_err, "unknown option %s\n", *argv); 203 badops=1; 204 break; 205 } 206 argc--; 207 argv++; 208 } 209 210 if (badops) 211 { 212 bad: 213 BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog); 214 BIO_printf(bio_err, "where options are\n"); 215 BIO_printf(bio_err, " -inform arg input format - " 216 "DER or PEM\n"); 217 BIO_printf(bio_err, " -outform arg output format - " 218 "DER or PEM\n"); 219 BIO_printf(bio_err, " -in arg input file\n"); 220 BIO_printf(bio_err, " -passin arg input file pass " 221 "phrase source\n"); 222 BIO_printf(bio_err, " -out arg output file\n"); 223 BIO_printf(bio_err, " -passout arg output file pass " 224 "phrase source\n"); 225 BIO_printf(bio_err, " -engine e use engine e, " 226 "possibly a hardware device.\n"); 227 BIO_printf(bio_err, " -des encrypt PEM output, " 228 "instead of 'des' every other \n" 229 " cipher " 230 "supported by OpenSSL can be used\n"); 231 BIO_printf(bio_err, " -text print the key\n"); 232 BIO_printf(bio_err, " -noout don't print key out\n"); 233 BIO_printf(bio_err, " -param_out print the elliptic " 234 "curve parameters\n"); 235 BIO_printf(bio_err, " -conv_form arg specifies the " 236 "point conversion form \n"); 237 BIO_printf(bio_err, " possible values:" 238 " compressed\n"); 239 BIO_printf(bio_err, " " 240 " uncompressed (default)\n"); 241 BIO_printf(bio_err, " " 242 " hybrid\n"); 243 BIO_printf(bio_err, " -param_enc arg specifies the way" 244 " the ec parameters are encoded\n"); 245 BIO_printf(bio_err, " in the asn1 der " 246 "encoding\n"); 247 BIO_printf(bio_err, " possilbe values:" 248 " named_curve (default)\n"); 249 BIO_printf(bio_err," " 250 "explicit\n"); 251 goto end; 252 } 253 254 ERR_load_crypto_strings(); 255 256 #ifndef OPENSSL_NO_ENGINE 257 e = setup_engine(bio_err, engine, 0); 258 #endif 259 260 if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) 261 { 262 BIO_printf(bio_err, "Error getting passwords\n"); 263 goto end; 264 } 265 266 in = BIO_new(BIO_s_file()); 267 out = BIO_new(BIO_s_file()); 268 if ((in == NULL) || (out == NULL)) 269 { 270 ERR_print_errors(bio_err); 271 goto end; 272 } 273 274 if (infile == NULL) 275 BIO_set_fp(in, stdin, BIO_NOCLOSE); 276 else 277 { 278 if (BIO_read_filename(in, infile) <= 0) 279 { 280 perror(infile); 281 goto end; 282 } 283 } 284 285 BIO_printf(bio_err, "read EC key\n"); 286 if (informat == FORMAT_ASN1) 287 { 288 if (pubin) 289 eckey = d2i_EC_PUBKEY_bio(in, NULL); 290 else 291 eckey = d2i_ECPrivateKey_bio(in, NULL); 292 } 293 else if (informat == FORMAT_PEM) 294 { 295 if (pubin) 296 eckey = PEM_read_bio_EC_PUBKEY(in, NULL, NULL, 297 NULL); 298 else 299 eckey = PEM_read_bio_ECPrivateKey(in, NULL, NULL, 300 passin); 301 } 302 else 303 { 304 BIO_printf(bio_err, "bad input format specified for key\n"); 305 goto end; 306 } 307 if (eckey == NULL) 308 { 309 BIO_printf(bio_err,"unable to load Key\n"); 310 ERR_print_errors(bio_err); 311 goto end; 312 } 313 314 if (outfile == NULL) 315 { 316 BIO_set_fp(out, stdout, BIO_NOCLOSE); 317 #ifdef OPENSSL_SYS_VMS 318 { 319 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 320 out = BIO_push(tmpbio, out); 321 } 322 #endif 323 } 324 else 325 { 326 if (BIO_write_filename(out, outfile) <= 0) 327 { 328 perror(outfile); 329 goto end; 330 } 331 } 332 333 group = EC_KEY_get0_group(eckey); 334 335 if (new_form) 336 EC_KEY_set_conv_form(eckey, form); 337 338 if (new_asn1_flag) 339 EC_KEY_set_asn1_flag(eckey, asn1_flag); 340 341 if (text) 342 if (!EC_KEY_print(out, eckey, 0)) 343 { 344 perror(outfile); 345 ERR_print_errors(bio_err); 346 goto end; 347 } 348 349 if (noout) 350 { 351 ret = 0; 352 goto end; 353 } 354 355 BIO_printf(bio_err, "writing EC key\n"); 356 if (outformat == FORMAT_ASN1) 357 { 358 if (param_out) 359 i = i2d_ECPKParameters_bio(out, group); 360 else if (pubin || pubout) 361 i = i2d_EC_PUBKEY_bio(out, eckey); 362 else 363 i = i2d_ECPrivateKey_bio(out, eckey); 364 } 365 else if (outformat == FORMAT_PEM) 366 { 367 if (param_out) 368 i = PEM_write_bio_ECPKParameters(out, group); 369 else if (pubin || pubout) 370 i = PEM_write_bio_EC_PUBKEY(out, eckey); 371 else 372 i = PEM_write_bio_ECPrivateKey(out, eckey, enc, 373 NULL, 0, NULL, passout); 374 } 375 else 376 { 377 BIO_printf(bio_err, "bad output format specified for " 378 "outfile\n"); 379 goto end; 380 } 381 382 if (!i) 383 { 384 BIO_printf(bio_err, "unable to write private key\n"); 385 ERR_print_errors(bio_err); 386 } 387 else 388 ret=0; 389 end: 390 if (in) 391 BIO_free(in); 392 if (out) 393 BIO_free_all(out); 394 if (eckey) 395 EC_KEY_free(eckey); 396 if (passin) 397 OPENSSL_free(passin); 398 if (passout) 399 OPENSSL_free(passout); 400 apps_shutdown(); 401 OPENSSL_EXIT(ret); 402 } 403 #endif 404