Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 1 | /* apps/genpkey.c */ |
| 2 | /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL |
| 3 | * project 2006 |
| 4 | */ |
| 5 | /* ==================================================================== |
| 6 | * Copyright (c) 2006 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 | * licensing@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 | #include <stdio.h> |
| 59 | #include <string.h> |
| 60 | #include "apps.h" |
| 61 | #include <openssl/pem.h> |
| 62 | #include <openssl/err.h> |
| 63 | #include <openssl/evp.h> |
| 64 | #ifndef OPENSSL_NO_ENGINE |
| 65 | #include <openssl/engine.h> |
| 66 | #endif |
| 67 | |
| 68 | static int init_keygen_file(BIO *err, EVP_PKEY_CTX **pctx, |
| 69 | const char *file, ENGINE *e); |
| 70 | static int genpkey_cb(EVP_PKEY_CTX *ctx); |
| 71 | |
| 72 | #define PROG genpkey_main |
| 73 | |
| 74 | int MAIN(int, char **); |
| 75 | |
| 76 | int MAIN(int argc, char **argv) |
| 77 | { |
| 78 | ENGINE *e = NULL; |
| 79 | char **args, *outfile = NULL; |
| 80 | char *passarg = NULL; |
| 81 | BIO *in = NULL, *out = NULL; |
| 82 | const EVP_CIPHER *cipher = NULL; |
| 83 | int outformat; |
| 84 | int text = 0; |
| 85 | EVP_PKEY *pkey=NULL; |
| 86 | EVP_PKEY_CTX *ctx = NULL; |
| 87 | char *pass = NULL; |
| 88 | int badarg = 0; |
| 89 | int ret = 1, rv; |
| 90 | |
| 91 | int do_param = 0; |
| 92 | |
| 93 | if (bio_err == NULL) |
| 94 | bio_err = BIO_new_fp (stderr, BIO_NOCLOSE); |
| 95 | |
| 96 | if (!load_config(bio_err, NULL)) |
| 97 | goto end; |
| 98 | |
| 99 | outformat=FORMAT_PEM; |
| 100 | |
| 101 | ERR_load_crypto_strings(); |
| 102 | OpenSSL_add_all_algorithms(); |
| 103 | args = argv + 1; |
| 104 | while (!badarg && *args && *args[0] == '-') |
| 105 | { |
| 106 | if (!strcmp(*args,"-outform")) |
| 107 | { |
| 108 | if (args[1]) |
| 109 | { |
| 110 | args++; |
| 111 | outformat=str2fmt(*args); |
| 112 | } |
| 113 | else badarg = 1; |
| 114 | } |
| 115 | else if (!strcmp(*args,"-pass")) |
| 116 | { |
| 117 | if (!args[1]) goto bad; |
| 118 | passarg= *(++args); |
| 119 | } |
| 120 | #ifndef OPENSSL_NO_ENGINE |
| 121 | else if (strcmp(*args,"-engine") == 0) |
| 122 | { |
| 123 | if (!args[1]) |
| 124 | goto bad; |
| 125 | e = setup_engine(bio_err, *(++args), 0); |
| 126 | } |
| 127 | #endif |
| 128 | else if (!strcmp (*args, "-paramfile")) |
| 129 | { |
| 130 | if (!args[1]) |
| 131 | goto bad; |
| 132 | args++; |
| 133 | if (do_param == 1) |
| 134 | goto bad; |
| 135 | if (!init_keygen_file(bio_err, &ctx, *args, e)) |
| 136 | goto end; |
| 137 | } |
| 138 | else if (!strcmp (*args, "-out")) |
| 139 | { |
| 140 | if (args[1]) |
| 141 | { |
| 142 | args++; |
| 143 | outfile = *args; |
| 144 | } |
| 145 | else badarg = 1; |
| 146 | } |
| 147 | else if (strcmp(*args,"-algorithm") == 0) |
| 148 | { |
| 149 | if (!args[1]) |
| 150 | goto bad; |
| 151 | if (!init_gen_str(bio_err, &ctx, *(++args),e, do_param)) |
| 152 | goto end; |
| 153 | } |
| 154 | else if (strcmp(*args,"-pkeyopt") == 0) |
| 155 | { |
| 156 | if (!args[1]) |
| 157 | goto bad; |
| 158 | if (!ctx) |
| 159 | { |
| 160 | BIO_puts(bio_err, "No keytype specified\n"); |
| 161 | goto bad; |
| 162 | } |
| 163 | else if (pkey_ctrl_string(ctx, *(++args)) <= 0) |
| 164 | { |
| 165 | BIO_puts(bio_err, "parameter setting error\n"); |
| 166 | ERR_print_errors(bio_err); |
| 167 | goto end; |
| 168 | } |
| 169 | } |
| 170 | else if (strcmp(*args,"-genparam") == 0) |
| 171 | { |
| 172 | if (ctx) |
| 173 | goto bad; |
| 174 | do_param = 1; |
| 175 | } |
| 176 | else if (strcmp(*args,"-text") == 0) |
| 177 | text=1; |
| 178 | else |
| 179 | { |
| 180 | cipher = EVP_get_cipherbyname(*args + 1); |
| 181 | if (!cipher) |
| 182 | { |
| 183 | BIO_printf(bio_err, "Unknown cipher %s\n", |
| 184 | *args + 1); |
| 185 | badarg = 1; |
| 186 | } |
| 187 | if (do_param == 1) |
| 188 | badarg = 1; |
| 189 | } |
| 190 | args++; |
| 191 | } |
| 192 | |
| 193 | if (!ctx) |
| 194 | badarg = 1; |
| 195 | |
| 196 | if (badarg) |
| 197 | { |
| 198 | bad: |
| 199 | BIO_printf(bio_err, "Usage: genpkey [options]\n"); |
| 200 | BIO_printf(bio_err, "where options may be\n"); |
| 201 | BIO_printf(bio_err, "-out file output file\n"); |
| 202 | BIO_printf(bio_err, "-outform X output format (DER or PEM)\n"); |
| 203 | BIO_printf(bio_err, "-pass arg output file pass phrase source\n"); |
| 204 | BIO_printf(bio_err, "-<cipher> use cipher <cipher> to encrypt the key\n"); |
| 205 | #ifndef OPENSSL_NO_ENGINE |
| 206 | BIO_printf(bio_err, "-engine e use engine e, possibly a hardware device.\n"); |
| 207 | #endif |
| 208 | BIO_printf(bio_err, "-paramfile file parameters file\n"); |
| 209 | BIO_printf(bio_err, "-algorithm alg the public key algorithm\n"); |
| 210 | BIO_printf(bio_err, "-pkeyopt opt:value set the public key algorithm option <opt>\n" |
| 211 | " to value <value>\n"); |
| 212 | BIO_printf(bio_err, "-genparam generate parameters, not key\n"); |
| 213 | BIO_printf(bio_err, "-text print the in text\n"); |
| 214 | BIO_printf(bio_err, "NB: options order may be important! See the manual page.\n"); |
| 215 | goto end; |
| 216 | } |
| 217 | |
| 218 | if (!app_passwd(bio_err, passarg, NULL, &pass, NULL)) |
| 219 | { |
| 220 | BIO_puts(bio_err, "Error getting password\n"); |
| 221 | goto end; |
| 222 | } |
| 223 | |
| 224 | if (outfile) |
| 225 | { |
| 226 | if (!(out = BIO_new_file (outfile, "wb"))) |
| 227 | { |
| 228 | BIO_printf(bio_err, |
| 229 | "Can't open output file %s\n", outfile); |
| 230 | goto end; |
| 231 | } |
| 232 | } |
| 233 | else |
| 234 | { |
| 235 | out = BIO_new_fp (stdout, BIO_NOCLOSE); |
| 236 | #ifdef OPENSSL_SYS_VMS |
| 237 | { |
| 238 | BIO *tmpbio = BIO_new(BIO_f_linebuffer()); |
| 239 | out = BIO_push(tmpbio, out); |
| 240 | } |
| 241 | #endif |
| 242 | } |
| 243 | |
| 244 | EVP_PKEY_CTX_set_cb(ctx, genpkey_cb); |
| 245 | EVP_PKEY_CTX_set_app_data(ctx, bio_err); |
| 246 | |
| 247 | if (do_param) |
| 248 | { |
| 249 | if (EVP_PKEY_paramgen(ctx, &pkey) <= 0) |
| 250 | { |
| 251 | BIO_puts(bio_err, "Error generating parameters\n"); |
| 252 | ERR_print_errors(bio_err); |
| 253 | goto end; |
| 254 | } |
| 255 | } |
| 256 | else |
| 257 | { |
| 258 | if (EVP_PKEY_keygen(ctx, &pkey) <= 0) |
| 259 | { |
| 260 | BIO_puts(bio_err, "Error generating key\n"); |
| 261 | ERR_print_errors(bio_err); |
| 262 | goto end; |
| 263 | } |
| 264 | } |
| 265 | |
| 266 | if (do_param) |
| 267 | rv = PEM_write_bio_Parameters(out, pkey); |
| 268 | else if (outformat == FORMAT_PEM) |
| 269 | rv = PEM_write_bio_PrivateKey(out, pkey, cipher, NULL, 0, |
| 270 | NULL, pass); |
| 271 | else if (outformat == FORMAT_ASN1) |
| 272 | rv = i2d_PrivateKey_bio(out, pkey); |
| 273 | else |
| 274 | { |
| 275 | BIO_printf(bio_err, "Bad format specified for key\n"); |
| 276 | goto end; |
| 277 | } |
| 278 | |
| 279 | if (rv <= 0) |
| 280 | { |
| 281 | BIO_puts(bio_err, "Error writing key\n"); |
| 282 | ERR_print_errors(bio_err); |
| 283 | } |
| 284 | |
| 285 | if (text) |
| 286 | { |
| 287 | if (do_param) |
| 288 | rv = EVP_PKEY_print_params(out, pkey, 0, NULL); |
| 289 | else |
| 290 | rv = EVP_PKEY_print_private(out, pkey, 0, NULL); |
| 291 | |
| 292 | if (rv <= 0) |
| 293 | { |
| 294 | BIO_puts(bio_err, "Error printing key\n"); |
| 295 | ERR_print_errors(bio_err); |
| 296 | } |
| 297 | } |
| 298 | |
| 299 | ret = 0; |
| 300 | |
| 301 | end: |
| 302 | if (pkey) |
| 303 | EVP_PKEY_free(pkey); |
| 304 | if (ctx) |
| 305 | EVP_PKEY_CTX_free(ctx); |
| 306 | if (out) |
| 307 | BIO_free_all(out); |
| 308 | BIO_free(in); |
| 309 | if (pass) |
| 310 | OPENSSL_free(pass); |
| 311 | |
| 312 | return ret; |
| 313 | } |
| 314 | |
| 315 | static int init_keygen_file(BIO *err, EVP_PKEY_CTX **pctx, |
| 316 | const char *file, ENGINE *e) |
| 317 | { |
| 318 | BIO *pbio; |
| 319 | EVP_PKEY *pkey = NULL; |
| 320 | EVP_PKEY_CTX *ctx = NULL; |
| 321 | if (*pctx) |
| 322 | { |
| 323 | BIO_puts(err, "Parameters already set!\n"); |
| 324 | return 0; |
| 325 | } |
| 326 | |
| 327 | pbio = BIO_new_file(file, "r"); |
| 328 | if (!pbio) |
| 329 | { |
| 330 | BIO_printf(err, "Can't open parameter file %s\n", file); |
| 331 | return 0; |
| 332 | } |
| 333 | |
| 334 | pkey = PEM_read_bio_Parameters(pbio, NULL); |
| 335 | BIO_free(pbio); |
| 336 | |
| 337 | if (!pkey) |
| 338 | { |
| 339 | BIO_printf(bio_err, "Error reading parameter file %s\n", file); |
| 340 | return 0; |
| 341 | } |
| 342 | |
| 343 | ctx = EVP_PKEY_CTX_new(pkey, e); |
| 344 | if (!ctx) |
| 345 | goto err; |
| 346 | if (EVP_PKEY_keygen_init(ctx) <= 0) |
| 347 | goto err; |
| 348 | EVP_PKEY_free(pkey); |
| 349 | *pctx = ctx; |
| 350 | return 1; |
| 351 | |
| 352 | err: |
| 353 | BIO_puts(err, "Error initializing context\n"); |
| 354 | ERR_print_errors(err); |
| 355 | if (ctx) |
| 356 | EVP_PKEY_CTX_free(ctx); |
| 357 | if (pkey) |
| 358 | EVP_PKEY_free(pkey); |
| 359 | return 0; |
| 360 | |
| 361 | } |
| 362 | |
| 363 | int init_gen_str(BIO *err, EVP_PKEY_CTX **pctx, |
| 364 | const char *algname, ENGINE *e, int do_param) |
| 365 | { |
| 366 | EVP_PKEY_CTX *ctx = NULL; |
| 367 | const EVP_PKEY_ASN1_METHOD *ameth; |
| 368 | ENGINE *tmpeng = NULL; |
| 369 | int pkey_id; |
| 370 | |
| 371 | if (*pctx) |
| 372 | { |
| 373 | BIO_puts(err, "Algorithm already set!\n"); |
| 374 | return 0; |
| 375 | } |
| 376 | |
| 377 | ameth = EVP_PKEY_asn1_find_str(&tmpeng, algname, -1); |
| 378 | |
| 379 | #ifndef OPENSSL_NO_ENGINE |
| 380 | if (!ameth && e) |
| 381 | ameth = ENGINE_get_pkey_asn1_meth_str(e, algname, -1); |
| 382 | #endif |
| 383 | |
| 384 | if (!ameth) |
| 385 | { |
| 386 | BIO_printf(bio_err, "Algorithm %s not found\n", algname); |
| 387 | return 0; |
| 388 | } |
| 389 | |
| 390 | ERR_clear_error(); |
| 391 | |
| 392 | EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth); |
| 393 | #ifndef OPENSSL_NO_ENGINE |
| 394 | if (tmpeng) |
| 395 | ENGINE_finish(tmpeng); |
| 396 | #endif |
| 397 | ctx = EVP_PKEY_CTX_new_id(pkey_id, e); |
| 398 | |
| 399 | if (!ctx) |
| 400 | goto err; |
| 401 | if (do_param) |
| 402 | { |
| 403 | if (EVP_PKEY_paramgen_init(ctx) <= 0) |
| 404 | goto err; |
| 405 | } |
| 406 | else |
| 407 | { |
| 408 | if (EVP_PKEY_keygen_init(ctx) <= 0) |
| 409 | goto err; |
| 410 | } |
| 411 | |
| 412 | *pctx = ctx; |
| 413 | return 1; |
| 414 | |
| 415 | err: |
| 416 | BIO_printf(err, "Error initializing %s context\n", algname); |
| 417 | ERR_print_errors(err); |
| 418 | if (ctx) |
| 419 | EVP_PKEY_CTX_free(ctx); |
| 420 | return 0; |
| 421 | |
| 422 | } |
| 423 | |
| 424 | static int genpkey_cb(EVP_PKEY_CTX *ctx) |
| 425 | { |
| 426 | char c='*'; |
| 427 | BIO *b = EVP_PKEY_CTX_get_app_data(ctx); |
| 428 | int p; |
| 429 | p = EVP_PKEY_CTX_get_keygen_info(ctx, 0); |
| 430 | if (p == 0) c='.'; |
| 431 | if (p == 1) c='+'; |
| 432 | if (p == 2) c='*'; |
| 433 | if (p == 3) c='\n'; |
| 434 | BIO_write(b,&c,1); |
| 435 | (void)BIO_flush(b); |
| 436 | #ifdef LINT |
| 437 | p=n; |
| 438 | #endif |
| 439 | return 1; |
| 440 | } |