crypto/openssl/apps/genrsa.c

   1 /* apps/genrsa.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <openssl/opensslconf.h>
  60 /* Until the key-gen callbacks are modified to use newer prototypes, we allow
  61  * deprecated functions for openssl-internal code */
  62 #ifdef OPENSSL_NO_DEPRECATED
  63 #undef OPENSSL_NO_DEPRECATED
  64 #endif
  65
  66 #ifndef OPENSSL_NO_RSA
  67 #include <stdio.h>
  68 #include <string.h>
  69 #include <sys/types.h>
  70 #include <sys/stat.h>
  71 #include "apps.h"
  72 #include <openssl/bio.h>
  73 #include <openssl/err.h>
  74 #include <openssl/bn.h>
  75 #include <openssl/rsa.h>
  76 #include <openssl/evp.h>
  77 #include <openssl/x509.h>
  78 #include <openssl/pem.h>
  79 #include <openssl/rand.h>
  80
  81 #define DEFBITS 512
  82 #undef PROG
  83 #define PROG genrsa_main
  84
  85 static int MS_CALLBACK genrsa_cb(int p, int n, BN_GENCB *cb);
  86
  87 int MAIN(int, char **);
  88
  89 int MAIN(int argc, char **argv)
  90         {
  91         BN_GENCB cb;
  92 #ifndef OPENSSL_NO_ENGINE
  93         ENGINE *e = NULL;
  94 #endif
  95         int ret=1;
  96         int i,num=DEFBITS;
  97         long l;
  98         int use_x931 = 0;
  99         const EVP_CIPHER *enc=NULL;
 100         unsigned long f4=RSA_F4;
 101         char *outfile=NULL;
 102         char *passargout = NULL, *passout = NULL;
 103 #ifndef OPENSSL_NO_ENGINE
 104         char *engine=NULL;
 105 #endif
 106         char *inrand=NULL;
 107         BIO *out=NULL;
 108         BIGNUM *bn = BN_new();
 109         RSA *rsa = RSA_new();
 110
 111         if(!bn || !rsa) goto err;
 112
 113         apps_startup();
 114         BN_GENCB_set(&cb, genrsa_cb, bio_err);
 115
 116         if (bio_err == NULL)
 117                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 118                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 119
 120         if (!load_config(bio_err, NULL))
 121                 goto err;
 122         if ((out=BIO_new(BIO_s_file())) == NULL)
 123                 {
 124                 BIO_printf(bio_err,"unable to create BIO for output\n");
 125                 goto err;
 126                 }
 127
 128         argv++;
 129         argc--;
 130         for (;;)
 131                 {
 132                 if (argc <= 0) break;
 133                 if (strcmp(*argv,"-out") == 0)
 134                         {
 135                         if (--argc < 1) goto bad;
 136                         outfile= *(++argv);
 137                         }
 138                 else if (strcmp(*argv,"-3") == 0)
 139                         f4=3;
 140                 else if (strcmp(*argv,"-F4") == 0 || strcmp(*argv,"-f4") == 0)
 141                         f4=RSA_F4;
 142                 else if (strcmp(*argv,"-x931") == 0)
 143                         use_x931 = 1;
 144 #ifndef OPENSSL_NO_ENGINE
 145                 else if (strcmp(*argv,"-engine") == 0)
 146                         {
 147                         if (--argc < 1) goto bad;
 148                         engine= *(++argv);
 149                         }
 150 #endif
 151                 else if (strcmp(*argv,"-rand") == 0)
 152                         {
 153                         if (--argc < 1) goto bad;
 154                         inrand= *(++argv);
 155                         }
 156 #ifndef OPENSSL_NO_DES
 157                 else if (strcmp(*argv,"-des") == 0)
 158                         enc=EVP_des_cbc();
 159                 else if (strcmp(*argv,"-des3") == 0)
 160                         enc=EVP_des_ede3_cbc();
 161 #endif
 162 #ifndef OPENSSL_NO_IDEA
 163                 else if (strcmp(*argv,"-idea") == 0)
 164                         enc=EVP_idea_cbc();
 165 #endif
 166 #ifndef OPENSSL_NO_SEED
 167                 else if (strcmp(*argv,"-seed") == 0)
 168                         enc=EVP_seed_cbc();
 169 #endif
 170 #ifndef OPENSSL_NO_AES
 171                 else if (strcmp(*argv,"-aes128") == 0)
 172                         enc=EVP_aes_128_cbc();
 173                 else if (strcmp(*argv,"-aes192") == 0)
 174                         enc=EVP_aes_192_cbc();
 175                 else if (strcmp(*argv,"-aes256") == 0)
 176                         enc=EVP_aes_256_cbc();
 177 #endif
 178 #ifndef OPENSSL_NO_CAMELLIA
 179                 else if (strcmp(*argv,"-camellia128") == 0)
 180                         enc=EVP_camellia_128_cbc();
 181                 else if (strcmp(*argv,"-camellia192") == 0)
 182                         enc=EVP_camellia_192_cbc();
 183                 else if (strcmp(*argv,"-camellia256") == 0)
 184                         enc=EVP_camellia_256_cbc();
 185 #endif
 186                 else if (strcmp(*argv,"-passout") == 0)
 187                         {
 188                         if (--argc < 1) goto bad;
 189                         passargout= *(++argv);
 190                         }
 191                 else
 192                         break;
 193                 argv++;
 194                 argc--;
 195                 }
 196         if ((argc >= 1) && ((sscanf(*argv,"%d",&num) == 0) || (num < 0)))
 197                 {
 198 bad:
 199                 BIO_printf(bio_err,"usage: genrsa [args] [numbits]\n");
 200                 BIO_printf(bio_err," -des            encrypt the generated key with DES in cbc mode\n");
 201                 BIO_printf(bio_err," -des3           encrypt the generated key with DES in ede cbc mode (168 bit key)\n");
 202 #ifndef OPENSSL_NO_IDEA
 203                 BIO_printf(bio_err," -idea           encrypt the generated key with IDEA in cbc mode\n");
 204 #endif
 205 #ifndef OPENSSL_NO_SEED
 206                 BIO_printf(bio_err," -seed\n");
 207                 BIO_printf(bio_err,"                 encrypt PEM output with cbc seed\n");
 208 #endif
 209 #ifndef OPENSSL_NO_AES
 210                 BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
 211                 BIO_printf(bio_err,"                 encrypt PEM output with cbc aes\n");
 212 #endif
 213 #ifndef OPENSSL_NO_CAMELLIA
 214                 BIO_printf(bio_err," -camellia128, -camellia192, -camellia256\n");
 215                 BIO_printf(bio_err,"                 encrypt PEM output with cbc camellia\n");
 216 #endif
 217                 BIO_printf(bio_err," -out file       output the key to 'file\n");
 218                 BIO_printf(bio_err," -passout arg    output file pass phrase source\n");
 219                 BIO_printf(bio_err," -f4             use F4 (0x10001) for the E value\n");
 220                 BIO_printf(bio_err," -3              use 3 for the E value\n");
 221 #ifndef OPENSSL_NO_ENGINE
 222                 BIO_printf(bio_err," -engine e       use engine e, possibly a hardware device.\n");
 223 #endif
 224                 BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 225                 BIO_printf(bio_err,"                 load the file (or the files in the directory) into\n");
 226                 BIO_printf(bio_err,"                 the random number generator\n");
 227                 goto err;
 228                 }
 229
 230         ERR_load_crypto_strings();
 231
 232         if(!app_passwd(bio_err, NULL, passargout, NULL, &passout)) {
 233                 BIO_printf(bio_err, "Error getting password\n");
 234                 goto err;
 235         }
 236
 237 #ifndef OPENSSL_NO_ENGINE
 238         e = setup_engine(bio_err, engine, 0);
 239 #endif
 240
 241         if (outfile == NULL)
 242                 {
 243                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 244 #ifdef OPENSSL_SYS_VMS
 245                 {
 246                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 247                 out = BIO_push(tmpbio, out);
 248                 }
 249 #endif
 250                 }
 251         else
 252                 {
 253                 if (BIO_write_filename(out,outfile) <= 0)
 254                         {
 255                         perror(outfile);
 256                         goto err;
 257                         }
 258                 }
 259
 260         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
 261                 && !RAND_status())
 262                 {
 263                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
 264                 }
 265         if (inrand != NULL)
 266                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 267                         app_RAND_load_files(inrand));
 268
 269         BIO_printf(bio_err,"Generating RSA private key, %d bit long modulus\n",
 270                 num);
 271
 272         if (use_x931)
 273                 {
 274                 BIGNUM *pubexp;
 275                 pubexp = BN_new();
 276                 if (!BN_set_word(pubexp, f4))
 277                         goto err;
 278                 if (!RSA_X931_generate_key_ex(rsa, num, pubexp, &cb))
 279                         goto err;
 280                 BN_free(pubexp);
 281                 }
 282         else if(!BN_set_word(bn, f4) || !RSA_generate_key_ex(rsa, num, bn, &cb))
 283                 goto err;
 284
 285         app_RAND_write_file(NULL, bio_err);
 286
 287         /* We need to do the following for when the base number size is <
 288          * long, esp windows 3.1 :-(. */
 289         l=0L;
 290         for (i=0; i<rsa->e->top; i++)
 291                 {
 292 #ifndef SIXTY_FOUR_BIT
 293                 l<<=BN_BITS4;
 294                 l<<=BN_BITS4;
 295 #endif
 296                 l+=rsa->e->d[i];
 297                 }
 298         BIO_printf(bio_err,"e is %ld (0x%lX)\n",l,l);
 299         {
 300         PW_CB_DATA cb_data;
 301         cb_data.password = passout;
 302         cb_data.prompt_info = outfile;
 303         if (!PEM_write_bio_RSAPrivateKey(out,rsa,enc,NULL,0,
 304                 (pem_password_cb *)password_callback,&cb_data))
 305                 goto err;
 306         }
 307
 308         ret=0;
 309 err:
 310         if (bn) BN_free(bn);
 311         if (rsa) RSA_free(rsa);
 312         if (out) BIO_free_all(out);
 313         if(passout) OPENSSL_free(passout);
 314         if (ret != 0)
 315                 ERR_print_errors(bio_err);
 316         apps_shutdown();
 317         OPENSSL_EXIT(ret);
 318         }
 319
 320 static int MS_CALLBACK genrsa_cb(int p, int n, BN_GENCB *cb)
 321         {
 322         char c='*';
 323
 324         if (p == 0) c='.';
 325         if (p == 1) c='+';
 326         if (p == 2) c='*';
 327         if (p == 3) c='\n';
 328         BIO_write(cb->arg,&c,1);
 329         (void)BIO_flush(cb->arg);
 330 #ifdef LINT
 331         p=n;
 332 #endif
 333         return 1;
 334         }
 335 #else /* !OPENSSL_NO_RSA */
 336
 337 # if PEDANTIC
 338 static void *dummy=&dummy;
 339 # endif
 340
 341 #endif