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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
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1 |
<?php
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
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2 |
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
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3 |
/*
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
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|
4 |
* Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between
|
536
|
5 |
* Version 1.1.4 (Caoineag alpha 4)
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|
6 |
* Copyright (C) 2006-2008 Dan Fuhry
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467
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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
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7 |
* diffiehellman.php - Diffie Hellman key exchange and supporting functions
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
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|
8 |
*
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
9 |
* This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
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10 |
* as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
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11 |
*
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
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12 |
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
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13 |
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
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14 |
*/
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
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15 |
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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
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16 |
/**
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
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17 |
* EnanoMath GMP backend
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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
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18 |
*/
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
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19 |
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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
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20 |
class EnanoMath_GMP
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
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21 |
{
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
22 |
var $api = 'GMP';
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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
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23 |
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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
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24 |
/**
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
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25 |
* Initializes a number to a GMP integer.
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
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26 |
* @param string String representation of the number
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
27 |
* @param int Base the number is currently in, defaults to 10
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
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28 |
* @return resource
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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
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29 |
*/
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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
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30 |
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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
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31 |
function init($int, $base = 10)
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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
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32 |
{
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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
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diff
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33 |
return ( is_resource($int) ) ? $int : gmp_init($int, $base);
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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
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34 |
}
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
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35 |
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
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36 |
/**
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
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37 |
* Converts a number from a GMP integer to a string
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
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38 |
* @param resource
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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
39 |
* @param int Base, default is 10
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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
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40 |
* @return string
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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
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41 |
*/
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
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42 |
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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
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43 |
function str($int, $base = 10)
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
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44 |
{
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
45 |
return ( is_string($int) ) ? $int : gmp_strval($int, $base);
|
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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
46 |
}
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
47 |
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
48 |
/**
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
49 |
* Converts a number between bases.
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
50 |
* @param resource BigInt to convert
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
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51 |
* @param int Base to convert from
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
52 |
* @param int Base to convert to
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
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53 |
*/
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
54 |
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
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|
55 |
function basecon($int, $from, $to)
|
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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
56 |
{
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
57 |
return $this->init(gmp_strval(gmp_init($this->str($int), $from), $to));
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
58 |
}
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
59 |
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
60 |
/**
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
61 |
* Generates a random integer.
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
62 |
* @param int Length
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
63 |
* @return resource
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
64 |
*/
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
65 |
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e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
66 |
function random($len)
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
67 |
{
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
68 |
return gmp_random($len);
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
69 |
}
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
70 |
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
71 |
/**
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
72 |
* Powmod operation (calculates (a ^ b) mod m)
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
73 |
* @param resource a
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
74 |
* @param resource b
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
75 |
* @param resource m
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
76 |
* @return resource
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
77 |
*/
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
78 |
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
79 |
function powmod($a, $b, $m)
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
80 |
{
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
81 |
$a = $this->init($a);
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
82 |
$b = $this->init($b);
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
83 |
$m = $this->init($m);
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
84 |
return ( function_exists('gmp_powm') ) ? gmp_powm($a, $b, $m) : gmp_mod(gmp_pow($a, $b), $m);
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
85 |
}
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
86 |
}
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
87 |
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
88 |
/**
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
89 |
* EnanoMath big_int backend
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
90 |
*/
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
91 |
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
92 |
class EnanoMath_BigInt
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
93 |
{
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
94 |
var $api = 'big_int';
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
95 |
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
96 |
/**
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
97 |
* Initializes a number to a BigInt integer.
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
98 |
* @param string String representation of the number
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
99 |
* @param int Base the number is in, defaults to 10
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
100 |
* @return resource
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
101 |
*/
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
102 |
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
103 |
function init($int, $base = 10)
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
104 |
{
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
105 |
return (is_resource($int)) ? $int : bi_from_str($int, $base);
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
106 |
}
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
107 |
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
108 |
/**
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
109 |
* Converts a number from a BigInt integer to a string
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
110 |
* @param resource
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
111 |
* @param int Base, default is 10
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
112 |
* @return string
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
113 |
*/
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
114 |
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
115 |
function str($int, $base = 10)
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
116 |
{
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
117 |
return ( is_string($int) ) ? $int : bi_to_str($int, $base);
|
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|
118 |
}
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|
119 |
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|
120 |
/**
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|
121 |
* Generates a random integer
|
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|
122 |
* @param int Length (bits)
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|
123 |
* @return resource
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|
124 |
*/
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|
125 |
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|
126 |
function random($len)
|
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|
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{
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|
128 |
return bi_rand($len);
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|
129 |
}
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|
130 |
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|
131 |
/**
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|
132 |
* Converts a number between bases.
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|
133 |
* @param resource BigInt to convert
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|
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* @param int Base to convert from
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|
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* @param int Base to convert to
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|
136 |
*/
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|
137 |
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|
138 |
function basecon($int, $from, $to)
|
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|
139 |
{
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|
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return bi_base_convert($this->str($int, $from), $from, $to);
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|
141 |
}
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|
142 |
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changeset
|
143 |
/**
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|
144 |
* Powmod operation (calculates (a ^ b) mod m)
|
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|
145 |
* @param resource a
|
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|
146 |
* @param resource b
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|
147 |
* @param resource m
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|
148 |
* @return resource
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|
149 |
*/
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|
150 |
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|
151 |
function powmod($a, $b, $m)
|
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|
152 |
{
|
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|
153 |
$a = $this->init($a);
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|
154 |
$b = $this->init($b);
|
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|
155 |
$m = $this->init($m);
|
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|
156 |
return bi_powmod($a, $b, $m);
|
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|
157 |
}
|
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|
158 |
}
|
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|
159 |
|
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parents:
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changeset
|
160 |
/**
|
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|
161 |
* EnanoMath BCMath backend
|
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|
162 |
*/
|
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|
163 |
|
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|
164 |
class EnanoMath_BCMath
|
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|
165 |
{
|
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|
166 |
var $api = 'BCMath';
|
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|
167 |
|
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parents:
diff
changeset
|
168 |
/**
|
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diff
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|
169 |
* Initializes a number to a BCMath integer.
|
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diff
changeset
|
170 |
* @param string String representation of the number
|
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parents:
diff
changeset
|
171 |
* @param int Base the number is in, defaults to 10
|
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diff
changeset
|
172 |
* @return resource
|
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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
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diff
changeset
|
173 |
*/
|
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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
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parents:
diff
changeset
|
174 |
|
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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
175 |
function init($int, $base = 10)
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
176 |
{
|
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Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
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diff
changeset
|
177 |
return $this->basecon($int, $base, 10);
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
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diff
changeset
|
178 |
}
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
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parents:
diff
changeset
|
179 |
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
180 |
/**
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
181 |
* Converts a number from a BCMath integer to a string
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
182 |
* @param resource
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
183 |
* @param int Base, default is 10
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
184 |
* @return string
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
185 |
*/
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
186 |
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
187 |
function str($res)
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
188 |
{
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
189 |
return ( is_string($res) ) ? $res : strval($this->basecon($res, 10, $base));
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
190 |
}
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
191 |
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
192 |
/**
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
193 |
* Generates a random integer
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
194 |
* @param int Length in bits
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
195 |
* @return resource
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
196 |
*/
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
197 |
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
198 |
function random($len)
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
199 |
{
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
200 |
$len = 4 * $len;
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
201 |
$chars = '0123456789abcdef';
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
202 |
$ret = '';
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
203 |
for ( $i = 0; $i < $len; $i++ )
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
204 |
{
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
205 |
$chid = mt_rand ( 0, strlen($chars) - 1 );
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
206 |
$chr = $chars{$chid};
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
207 |
$ret .= $chr;
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
208 |
}
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
209 |
return $this->basecon($this->init($ret), 16, 10);
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
210 |
}
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
211 |
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
212 |
/**
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
213 |
* Converts a number between bases.
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
214 |
* @param resource BigInt to convert
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
215 |
* @param int Base to convert from
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
216 |
* @param int Base to convert to
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
217 |
*/
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
218 |
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
219 |
function basecon($int, $from, $to)
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
220 |
{
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
221 |
if ( $from != 10 )
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
222 |
$int = $this->_bcmath_base2dec($int, $from);
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
223 |
if ( $to != 10 )
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
224 |
$int = $this->_bcmath_dec2base($int, $to);
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
225 |
return $int;
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
226 |
}
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
227 |
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
228 |
/**
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
229 |
* Powmod operation (calculates (a ^ b) mod m)
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
230 |
* @param resource a
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
231 |
* @param resource b
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
232 |
* @param resource m
|
e4bbd6fb8df3
Modifed EnanoMath layer by segregating it into its own file; got support for big_int PHP extension backend working
Dan
parents:
diff
changeset
|
233 |
* @return resource
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*/
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function powmod($a, $b, $m)
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{
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$a = $this->init($a);
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$b = $this->init($b);
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$m = $this->init($m);
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return ( function_exists('bcpowmod') ) ? bcpowmod($a, $b, $m) : bcmod( bcpow($a, $b), $m );
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}
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// from us.php.net/bc:
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// convert a decimal value to any other base value
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function _bcmath_dec2base($dec,$base,$digits=FALSE) {
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if($base<2 or $base>256) die("Invalid Base: ".$base);
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bcscale(0);
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$value="";
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if(!$digits) $digits=$this->_bcmath_digits($base);
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while($dec>$base-1) {
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$rest=bcmod($dec,$base);
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$dec=bcdiv($dec,$base);
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$value=$digits[$rest].$value;
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}
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$value=$digits[intval($dec)].$value;
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return (string) $value;
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}
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// convert another base value to its decimal value
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function _bcmath_base2dec($value,$base,$digits=FALSE) {
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if($base<2 or $base>256) die("Invalid Base: ".$base);
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bcscale(0);
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if($base<37) $value=strtolower($value);
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if(!$digits) $digits=$this->_bcmath_digits($base);
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$size=strlen($value);
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$dec="0";
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for($loop=0;$loop<$size;$loop++) {
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$element=strpos($digits,$value[$loop]);
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$power=bcpow($base,$size-$loop-1);
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$dec=bcadd($dec,bcmul($element,$power));
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}
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return (string) $dec;
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}
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function _bcmath_digits($base) {
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if($base>64) {
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$digits="";
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for($loop=0;$loop<256;$loop++) {
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$digits.=chr($loop);
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}
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} else {
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$digits ="0123456789abcdefghijklmnopqrstuvwxyz";
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$digits.="ABCDEFGHIJKLMNOPQRSTUVWXYZ-_";
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}
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$digits=substr($digits,0,$base);
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return (string) $digits;
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}
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|
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}
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290 |
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/**
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* Creates a new math object based on what libraries are available.
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* @return object
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*/
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295 |
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function enanomath_create()
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{
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|
298 |
if ( function_exists('gmp_init') )
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return new EnanoMath_GMP();
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else if ( function_exists('bi_from_str') )
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301 |
return new EnanoMath_BigInt();
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302 |
else if ( function_exists('bcadd') )
|
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|
303 |
return new EnanoMath_BCMath();
|
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304 |
else
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|
305 |
throw new Exception('dh_err_not_supported');
|
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|
306 |
}
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|
307 |
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?>
|