crypto/openssl-0.9.7e/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 #ifndef OPENSSL_NO_RSA
  60 #include <stdio.h>
  61 #include <string.h>
  62 #include <sys/types.h>
  63 #include <sys/stat.h>
  64 #include "apps.h"
  65 #include <openssl/bio.h>
  66 #include <openssl/err.h>
  67 #include <openssl/bn.h>
  68 #include <openssl/rsa.h>
  69 #include <openssl/evp.h>
  70 #include <openssl/x509.h>
  71 #include <openssl/pem.h>
  72 #include <openssl/rand.h>
  73
  74 #define DEFBITS 512
  75 #undef PROG
  76 #define PROG genrsa_main
  77
  78 static void MS_CALLBACK genrsa_cb(int p, int n, void *arg);
  79
  80 int MAIN(int, char **);
  81
  82 int MAIN(int argc, char **argv)
  83         {
  84 #ifndef OPENSSL_NO_ENGINE
  85         ENGINE *e = NULL;
  86 #endif
  87         int ret=1;
  88         RSA *rsa=NULL;
  89         int i,num=DEFBITS;
  90         long l;
  91         const EVP_CIPHER *enc=NULL;
  92         unsigned long f4=RSA_F4;
  93         char *outfile=NULL;
  94         char *passargout = NULL, *passout = NULL;
  95 #ifndef OPENSSL_NO_ENGINE
  96         char *engine=NULL;
  97 #endif
  98         char *inrand=NULL;
  99         BIO *out=NULL;
 100
 101         apps_startup();
 102
 103         if (bio_err == NULL)
 104                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 105                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 106
 107         if (!load_config(bio_err, NULL))
 108                 goto err;
 109         if ((out=BIO_new(BIO_s_file())) == NULL)
 110                 {
 111                 BIO_printf(bio_err,"unable to create BIO for output\n");
 112                 goto err;
 113                 }
 114
 115         argv++;
 116         argc--;
 117         for (;;)
 118                 {
 119                 if (argc <= 0) break;
 120                 if (strcmp(*argv,"-out") == 0)
 121                         {
 122                         if (--argc < 1) goto bad;
 123                         outfile= *(++argv);
 124                         }
 125                 else if (strcmp(*argv,"-3") == 0)
 126                         f4=3;
 127                 else if (strcmp(*argv,"-F4") == 0 || strcmp(*argv,"-f4") == 0)
 128                         f4=RSA_F4;
 129 #ifndef OPENSSL_NO_ENGINE
 130                 else if (strcmp(*argv,"-engine") == 0)
 131                         {
 132                         if (--argc < 1) goto bad;
 133                         engine= *(++argv);
 134                         }
 135 #endif
 136                 else if (strcmp(*argv,"-rand") == 0)
 137                         {
 138                         if (--argc < 1) goto bad;
 139                         inrand= *(++argv);
 140                         }
 141 #ifndef OPENSSL_NO_DES
 142                 else if (strcmp(*argv,"-des") == 0)
 143                         enc=EVP_des_cbc();
 144                 else if (strcmp(*argv,"-des3") == 0)
 145                         enc=EVP_des_ede3_cbc();
 146 #endif
 147 #ifndef OPENSSL_NO_IDEA
 148                 else if (strcmp(*argv,"-idea") == 0)
 149                         enc=EVP_idea_cbc();
 150 #endif
 151 #ifndef OPENSSL_NO_AES
 152                 else if (strcmp(*argv,"-aes128") == 0)
 153                         enc=EVP_aes_128_cbc();
 154                 else if (strcmp(*argv,"-aes192") == 0)
 155                         enc=EVP_aes_192_cbc();
 156                 else if (strcmp(*argv,"-aes256") == 0)
 157                         enc=EVP_aes_256_cbc();
 158 #endif
 159                 else if (strcmp(*argv,"-passout") == 0)
 160                         {
 161                         if (--argc < 1) goto bad;
 162                         passargout= *(++argv);
 163                         }
 164                 else
 165                         break;
 166                 argv++;
 167                 argc--;
 168                 }
 169         if ((argc >= 1) && ((sscanf(*argv,"%d",&num) == 0) || (num < 0)))
 170                 {
 171 bad:
 172                 BIO_printf(bio_err,"usage: genrsa [args] [numbits]\n");
 173                 BIO_printf(bio_err," -des            encrypt the generated key with DES in cbc mode\n");
 174                 BIO_printf(bio_err," -des3           encrypt the generated key with DES in ede cbc mode (168 bit key)\n");
 175 #ifndef OPENSSL_NO_IDEA
 176                 BIO_printf(bio_err," -idea           encrypt the generated key with IDEA in cbc mode\n");
 177 #endif
 178 #ifndef OPENSSL_NO_AES
 179                 BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
 180                 BIO_printf(bio_err,"                 encrypt PEM output with cbc aes\n");
 181 #endif
 182                 BIO_printf(bio_err," -out file       output the key to 'file\n");
 183                 BIO_printf(bio_err," -passout arg    output file pass phrase source\n");
 184                 BIO_printf(bio_err," -f4             use F4 (0x10001) for the E value\n");
 185                 BIO_printf(bio_err," -3              use 3 for the E value\n");
 186 #ifndef OPENSSL_NO_ENGINE
 187                 BIO_printf(bio_err," -engine e       use engine e, possibly a hardware device.\n");
 188 #endif
 189                 BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 190                 BIO_printf(bio_err,"                 load the file (or the files in the directory) into\n");
 191                 BIO_printf(bio_err,"                 the random number generator\n");
 192                 goto err;
 193                 }
 194
 195         ERR_load_crypto_strings();
 196
 197         if(!app_passwd(bio_err, NULL, passargout, NULL, &passout)) {
 198                 BIO_printf(bio_err, "Error getting password\n");
 199                 goto err;
 200         }
 201
 202 #ifndef OPENSSL_NO_ENGINE
 203         e = setup_engine(bio_err, engine, 0);
 204 #endif
 205
 206         if (outfile == NULL)
 207                 {
 208                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 209 #ifdef OPENSSL_SYS_VMS
 210                 {
 211                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 212                 out = BIO_push(tmpbio, out);
 213                 }
 214 #endif
 215                 }
 216         else
 217                 {
 218                 if (BIO_write_filename(out,outfile) <= 0)
 219                         {
 220                         perror(outfile);
 221                         goto err;
 222                         }
 223                 }
 224
 225         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
 226                 && !RAND_status())
 227                 {
 228                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
 229                 }
 230         if (inrand != NULL)
 231                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 232                         app_RAND_load_files(inrand));
 233
 234         BIO_printf(bio_err,"Generating RSA private key, %d bit long modulus\n",
 235                 num);
 236         rsa=RSA_generate_key(num,f4,genrsa_cb,bio_err);
 237
 238         app_RAND_write_file(NULL, bio_err);
 239
 240         if (rsa == NULL) goto err;
 241
 242         /* We need to do the following for when the base number size is <
 243          * long, esp windows 3.1 :-(. */
 244         l=0L;
 245         for (i=0; i<rsa->e->top; i++)
 246                 {
 247 #ifndef SIXTY_FOUR_BIT
 248                 l<<=BN_BITS4;
 249                 l<<=BN_BITS4;
 250 #endif
 251                 l+=rsa->e->d[i];
 252                 }
 253         BIO_printf(bio_err,"e is %ld (0x%lX)\n",l,l);
 254         {
 255         PW_CB_DATA cb_data;
 256         cb_data.password = passout;
 257         cb_data.prompt_info = outfile;
 258         if (!PEM_write_bio_RSAPrivateKey(out,rsa,enc,NULL,0,
 259                 (pem_password_cb *)password_callback,&cb_data))
 260                 goto err;
 261         }
 262
 263         ret=0;
 264 err:
 265         if (rsa != NULL) RSA_free(rsa);
 266         if (out != NULL) BIO_free_all(out);
 267         if(passout) OPENSSL_free(passout);
 268         if (ret != 0)
 269                 ERR_print_errors(bio_err);
 270         apps_shutdown();
 271         OPENSSL_EXIT(ret);
 272         }
 273
 274 static void MS_CALLBACK genrsa_cb(int p, int n, void *arg)
 275         {
 276         char c='*';
 277
 278         if (p == 0) c='.';
 279         if (p == 1) c='+';
 280         if (p == 2) c='*';
 281         if (p == 3) c='\n';
 282         BIO_write((BIO *)arg,&c,1);
 283         (void)BIO_flush((BIO *)arg);
 284 #ifdef LINT
 285         p=n;
 286 #endif
 287         }
 288 #else /* !OPENSSL_NO_RSA */
 289
 290 # if PEDANTIC
 291 static void *dummy=&dummy;
 292 # endif
 293
 294 #endif