CryptLib/Core/Strength.php

   1 <?php
   2 /**
   3  * The strength FlyweightEnum class
   4  *
   5  * PHP version 5.3
   6  *
   7  * @category   PHPCryptLib
   8  * @package    Core
   9  * @author     Anthony Ferrara <ircmaxell@ircmaxell.com>
  10  * @copyright  2011 The Authors
  11  * @license    http://www.opensource.org/licenses/mit-license.html  MIT License
  12  * @version    Build @@version@@
  13  */
  14
  15 namespace CryptLib\Core;
  16
  17 /**
  18  * The strength FlyweightEnum class
  19  *
  20  * All mixing strategies must extend this class
  21  *
  22  * @category   PHPCryptLib
  23  * @package    Core
  24  * @author     Anthony Ferrara <ircmaxell@ircmaxell.com>
  25  */
  26 class Strength extends Enum {
  27
  28     /**
  29      * We provide a default value of VeryLow so that we don't accidentally over
  30      * state the strength if we forget to pass in a value...
  31      */
  32     const __DEFAULT = self::VERYLOW;
  33
  34     /**
  35      * This represents Non-Cryptographic strengths.  It should not be used any time
  36      * that security or confidentiality is at stake
  37      */
  38     const VERYLOW = 1;
  39
  40     /**
  41      * This represents the bottom line of Cryptographic strengths.  It may be used
  42      * for low security uses where some strength is required.
  43      */
  44     const LOW = 3;
  45
  46     /**
  47      * This is the general purpose Cryptographical strength.  It should be suitable
  48      * for all uses except the most sensitive.
  49      */
  50     const MEDIUM = 5;
  51
  52     /**
  53      * This is the highest strength available.  It should not be used unless the
  54      * high strength is needed, due to hardware constraints (and entropy
  55      * limitations).
  56      */
  57     const HIGH = 7;
  58
  59 }