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