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: Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

#### Tags:

author: | Jim Wigginton <terrafrost@php.net>
version: | $Id: TripleDES.php,v 1.2 2011/05/19 18:02:11 gruberroland Exp $
copyright: | MMVII Jim Wigginton
link: | http://phpseclib.sourceforge.net
license: | MIT License

#### Includes:

require_once('DES.php') [line 60]
Include Crypt_DES

### CRYPT_DES_MODE_3CBC [line 67]

`CRYPT_DES_MODE_3CBC = -2`

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 74]

`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 Tue, 22 Nov 2011 16:30:14 +0100 by phpDocumentor 1.4.1