crypto/bn/bn_prime.pl

   1 #!/usr/local/bin/perl
   2 # bn_prime.pl
   3
   4 $num=2048;
   5 $num=$ARGV[0] if ($#ARGV >= 0);
   6
   7 push(@primes,2);
   8 $p=1;
   9 loop: while ($#primes < $num-1)
  10         {
  11         $p+=2;
  12         $s=int(sqrt($p));
  13
  14         for ($i=0; defined($primes[$i]) && $primes[$i]<=$s; $i++)
  15                 {
  16                 next loop if (($p%$primes[$i]) == 0);
  17                 }
  18         push(@primes,$p);
  19         }
  20
  21 print <<\EOF;
  22 /* Auto generated by bn_prime.pl */
  23 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  24  * All rights reserved.
  25  *
  26  * This package is an SSL implementation written
  27  * by Eric Young (eay@cryptsoft.com).
  28  * The implementation was written so as to conform with Netscapes SSL.
  29  *
  30  * This library is free for commercial and non-commercial use as long as
  31  * the following conditions are aheared to.  The following conditions
  32  * apply to all code found in this distribution, be it the RC4, RSA,
  33  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  34  * included with this distribution is covered by the same copyright terms
  35  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  36  *
  37  * Copyright remains Eric Young's, and as such any Copyright notices in
  38  * the code are not to be removed.
  39  * If this package is used in a product, Eric Young should be given attribution
  40  * as the author of the parts of the library used.
  41  * This can be in the form of a textual message at program startup or
  42  * in documentation (online or textual) provided with the package.
  43  *
  44  * Redistribution and use in source and binary forms, with or without
  45  * modification, are permitted provided that the following conditions
  46  * are met:
  47  * 1. Redistributions of source code must retain the copyright
  48  *    notice, this list of conditions and the following disclaimer.
  49  * 2. Redistributions in binary form must reproduce the above copyright
  50  *    notice, this list of conditions and the following disclaimer in the
  51  *    documentation and/or other materials provided with the distribution.
  52  * 3. All advertising materials mentioning features or use of this software
  53  *    must display the following acknowledgement:
  54  *    "This product includes cryptographic software written by
  55  *     Eric Young (eay@cryptsoft.com)"
  56  *    The word 'cryptographic' can be left out if the rouines from the library
  57  *    being used are not cryptographic related :-).
  58  * 4. If you include any Windows specific code (or a derivative thereof) from
  59  *    the apps directory (application code) you must include an acknowledgement:
  60  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  61  *
  62  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  63  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  64  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  65  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  66  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  67  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  68  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  69  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  70  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  71  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  72  * SUCH DAMAGE.
  73  *
  74  * The licence and distribution terms for any publically available version or
  75  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  76  * copied and put under another distribution licence
  77  * [including the GNU Public Licence.]
  78  */
  79
  80 EOF
  81
  82 for ($i=0; $i <= $#primes; $i++)
  83         {
  84         if ($primes[$i] > 256)
  85                 {
  86                 $eight=$i;
  87                 last;
  88                 }
  89         }
  90
  91 printf "#ifndef EIGHT_BIT\n";
  92 printf "# define NUMPRIMES %d\n",$num;
  93 printf "typedef unsigned short prime_t;\n";
  94 printf "#else\n";
  95 printf "# define NUMPRIMES %d\n",$eight;
  96 printf "typedef unsigned char prime_t;\n";
  97 printf "#endif\n";
  98 print "static const prime_t primes[NUMPRIMES]= {\n    ";
  99 $init=0;
 100 for ($i=0; $i <= $#primes; $i++)
 101         {
 102         printf "\n#ifndef EIGHT_BIT\n    " if ($primes[$i] > 256) && !($init++);
 103         printf "\n    " if (($i%8) == 0) && ($i != 0);
 104         printf "%4d, ", $primes[$i];
 105         }
 106 print "\n#endif\n};\n";