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     BIGNUM *bn=NULL;
  66     BIO *bio_out;
  67
  68     apps_startup();
  69
  70     if (bio_err == NULL)
  71         if ((bio_err=BIO_new(BIO_s_file())) != NULL)
  72             BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
  73
  74     --argc;
  75     ++argv;
  76     while (argc >= 1 && **argv == '-')
  77         {
  78         if(!strcmp(*argv,"-hex"))
  79             hex=1;
  80         else if(!strcmp(*argv,"-checks"))
  81             if(--argc < 1)
  82                 goto bad;
  83             else
  84                 checks=atoi(*++argv);
  85         else
  86             {
  87             BIO_printf(bio_err,"Unknown option '%s'\n",*argv);
  88             goto bad;
  89             }
  90         --argc;
  91         ++argv;
  92         }
  93
  94     if (argv[0] == NULL)
  95         {
  96         BIO_printf(bio_err,"No prime specified\n");
  97         goto bad;
  98         }
  99
 100    if ((bio_out=BIO_new(BIO_s_file())) != NULL)
 101         {
 102         BIO_set_fp(bio_out,stdout,BIO_NOCLOSE);
 103 #ifdef OPENSSL_SYS_VMS
 104             {
 105             BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 106             bio_out = BIO_push(tmpbio, bio_out);
 107             }
 108 #endif
 109         }
 110
 111     if(hex)
 112         BN_hex2bn(&bn,argv[0]);
 113     else
 114         BN_dec2bn(&bn,argv[0]);
 115
 116     BN_print(bio_out,bn);
 117     BIO_printf(bio_out," is %sprime\n",
 118                BN_is_prime_ex(bn,checks,NULL,NULL) ? "" : "not ");
 119
 120     BN_free(bn);
 121     BIO_free_all(bio_out);
 122
 123     return 0;
 124
 125     bad:
 126     BIO_printf(bio_err,"options are\n");
 127     BIO_printf(bio_err,"%-14s hex\n","-hex");
 128     BIO_printf(bio_err,"%-14s number of checks\n","-checks <n>");
 129     return 1;
 130     }