release/src/router/openssl/apps/prime.c

   1 /* ====================================================================
   2  * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  *
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  *
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in
  13  *    the documentation and/or other materials provided with the
  14  *    distribution.
  15  *
  16  * 3. All advertising materials mentioning features or use of this
  17  *    software must display the following acknowledgment:
  18  *    "This product includes software developed by the OpenSSL Project
  19  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  20  *
  21  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  22  *    endorse or promote products derived from this software without
  23  *    prior written permission. For written permission, please contact
  24  *    openssl-core@openssl.org.
  25  *
  26  * 5. Products derived from this software may not be called "OpenSSL"
  27  *    nor may "OpenSSL" appear in their names without prior written
  28  *    permission of the OpenSSL Project.
  29  *
  30  * 6. Redistributions of any form whatsoever must retain the following
  31  *    acknowledgment:
  32  *    "This product includes software developed by the OpenSSL Project
  33  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  34  *
  35  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  36  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  37  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  38  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  39  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  40  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  41  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  42  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  43  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  44  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  45  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  46  * OF THE POSSIBILITY OF SUCH DAMAGE.
  47  *
  48  */
  49
  50 #include <string.h>
  51
  52 #include "apps.h"
  53 #include <openssl/bn.h>
  54
  55
  56 #undef PROG
  57 #define PROG prime_main
  58
  59 int MAIN(int, char **);
  60
  61 int MAIN(int argc, char **argv)
  62     {
  63     int hex=0;
  64     int checks=20;
  65     int generate=0;
  66     int bits=0;
  67     int safe=0;
  68     BIGNUM *bn=NULL;
  69     BIO *bio_out;
  70
  71     apps_startup();
  72
  73     if (bio_err == NULL)
  74         if ((bio_err=BIO_new(BIO_s_file())) != NULL)
  75             BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
  76
  77     --argc;
  78     ++argv;
  79     while (argc >= 1 && **argv == '-')
  80         {
  81         if(!strcmp(*argv,"-hex"))
  82             hex=1;
  83         else if(!strcmp(*argv,"-generate"))
  84             generate=1;
  85         else if(!strcmp(*argv,"-bits"))
  86             if(--argc < 1)
  87                 goto bad;
  88             else
  89                 bits=atoi(*++argv);
  90         else if(!strcmp(*argv,"-safe"))
  91             safe=1;
  92         else if(!strcmp(*argv,"-checks"))
  93             if(--argc < 1)
  94                 goto bad;
  95             else
  96                 checks=atoi(*++argv);
  97         else
  98             {
  99             BIO_printf(bio_err,"Unknown option '%s'\n",*argv);
 100             goto bad;
 101             }
 102         --argc;
 103         ++argv;
 104         }
 105
 106     if (argv[0] == NULL && !generate)
 107         {
 108         BIO_printf(bio_err,"No prime specified\n");
 109         goto bad;
 110         }
 111
 112     if ((bio_out=BIO_new(BIO_s_file())) != NULL)
 113         {
 114         BIO_set_fp(bio_out,stdout,BIO_NOCLOSE);
 115 #ifdef OPENSSL_SYS_VMS
 116             {
 117             BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 118             bio_out = BIO_push(tmpbio, bio_out);
 119             }
 120 #endif
 121         }
 122
 123     if(generate)
 124         {
 125         char *s;
 126
 127         if(!bits)
 128             {
 129             BIO_printf(bio_err,"Specifiy the number of bits.\n");
 130             return 1;
 131             }
 132         bn=BN_new();
 133         BN_generate_prime_ex(bn,bits,safe,NULL,NULL,NULL);
 134         s=hex ? BN_bn2hex(bn) : BN_bn2dec(bn);
 135         BIO_printf(bio_out,"%s\n",s);
 136         OPENSSL_free(s);
 137         }
 138     else
 139         {
 140         if(hex)
 141             BN_hex2bn(&bn,argv[0]);
 142         else
 143             BN_dec2bn(&bn,argv[0]);
 144
 145         BN_print(bio_out,bn);
 146         BIO_printf(bio_out," is %sprime\n",
 147                    BN_is_prime_ex(bn,checks,NULL,NULL) ? "" : "not ");
 148         }
 149
 150     BN_free(bn);
 151     BIO_free_all(bio_out);
 152
 153     return 0;
 154
 155     bad:
 156     BIO_printf(bio_err,"options are\n");
 157     BIO_printf(bio_err,"%-14s hex\n","-hex");
 158     BIO_printf(bio_err,"%-14s number of checks\n","-checks <n>");
 159     return 1;
 160     }