crypto/external/bsd/openssl/dist/apps/genpkey.c

   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         }