Crypt_TripleDES

# Procedural File: TripleDES.php

Source Location: /lib/3rdParty/phpseclib/Crypt/TripleDES.php

## Classes:

Crypt_TripleDES
  Pure-PHP implementation of Triple DES.

## Page Details:

Pure-PHP implementation of Triple DES.

Uses mcrypt, if available, and an internal implementation, otherwise. Operates in the EDE3 mode (encrypt-decrypt-encrypt).

PHP versions 4 and 5

Here's a short example of how to use this library:

1. <?php
2. include('Crypt/TripleDES.php');
4. $des = new Crypt_TripleDES ();
6. $des->setKey('abcdefghijklmnopqrstuvwx');
8. $size = 10 * 1024;
9. $plaintext = '';
10. for ($i = 0; $i < $size; $i++) {
11. $plaintext.= 'a';
12. }
14. echo $des->decrypt($des->encrypt($plaintext));
15. ?>

LICENSE: This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

#### Tags:

author: | Jim Wigginton <terrafrost@php.net>
version: | $Id: TripleDES.php,v 1.1 2010/05/14 14:06:16 gruberroland Exp $
copyright: | MMVII Jim Wigginton
link: | http://phpseclib.sourceforge.net
license: | http://www.gnu.org/licenses/lgpl.txt

#### Includes:

require_once('DES.php') [line 57]
Include Crypt_DES

### CRYPT_DES_MODE_3CBC [line 64]

`CRYPT_DES_MODE_3CBC = 3`

Encrypt / decrypt using inner chaining

Inner chaining is used by SSH-1 and is generally considered to be less secure then outer chaining (CRYPT_DES_MODE_CBC3).

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### CRYPT_DES_MODE_CBC3 [line 71]

`CRYPT_DES_MODE_CBC3 = CRYPT_DES_MODE_CBC`

Encrypt / decrypt using outer chaining

Outer chaining is used by SSH-2 and when the mode is set to CRYPT_DES_MODE_CBC.

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Documentation generated on Thu, 28 Oct 2010 21:00:40 +0200 by phpDocumentor 1.4.1