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1 <?php |
1 <?php |
2 |
2 |
3 /* |
3 /* |
4 * Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between |
4 * Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between |
5 * Version 1.1.2 (Caoineag alpha 2) |
5 * Version 1.1.3 (Caoineag alpha 3) |
6 * Copyright (C) 2006-2007 Dan Fuhry |
6 * Copyright (C) 2006-2007 Dan Fuhry |
7 * diffiehellman.php - Diffie Hellman key exchange and supporting functions |
7 * diffiehellman.php - Diffie Hellman key exchange and supporting functions |
8 * |
8 * |
9 * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License |
9 * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License |
10 * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. |
10 * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. |
15 |
15 |
16 /** |
16 /** |
17 * The Diffie-Hellman key exchange protocol |
17 * The Diffie-Hellman key exchange protocol |
18 */ |
18 */ |
19 |
19 |
20 $GLOBALS['_math'] = enanomath_create(); |
20 global $dh_supported; |
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21 $dh_supported = true; |
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22 try |
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23 { |
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24 $GLOBALS['_math'] = enanomath_create(); |
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25 } |
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26 catch ( Exception $e ) |
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27 { |
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28 $dh_supported = false; |
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29 } |
21 // Our prime number as a base for operations. |
30 // Our prime number as a base for operations. |
22 $GLOBALS['dh_prime'] = '82818079787776757473727170696867666564636261605958575655545352515049484746454443424140393837363534333231302928272625242322212019181716151413121110987654321'; |
31 $GLOBALS['dh_prime'] = '82818079787776757473727170696867666564636261605958575655545352515049484746454443424140393837363534333231302928272625242322212019181716151413121110987654321'; |
23 |
32 |
24 // g, a primitive root used as an exponent |
33 // g, a primitive root used as an exponent |
25 // (2 and 5 are acceptable, but BigInt is faster with odd numbers) |
34 // (2 and 5 are acceptable, but BigInt is faster with odd numbers) |