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refactoring the crypter class.

This commit is contained in:
Taylor Otwell 2011-10-20 22:28:39 -05:00
parent 49b13e6960
commit 0be75fc2d9
1 changed files with 24 additions and 16 deletions
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40
laravel/security/crypter.php
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@ -37,28 +37,36 @@ class Crypter {
*/ */
public static function encrypt($value) public static function encrypt($value)
{ {
// Determine the most appropriate random number generator for the $iv = mcrypt_create_iv(static::iv_size(), static::randomizer());
// OS and system and environment the application is running on.
if (defined('MCRYPT_DEV_URANDOM'))
{
$randomizer = MCRYPT_DEV_URANDOM;
}
elseif (defined('MCRYPT_DEV_RANDOM'))
{
$randomizer = MCRYPT_DEV_RANDOM;
}
else
{
$randomizer = MCRYPT_RAND;
}
$iv = mcrypt_create_iv(static::iv_size(), $randomizer);
$value = mcrypt_encrypt(static::$cipher, static::key(), $value, static::$mode, $iv); $value = mcrypt_encrypt(static::$cipher, static::key(), $value, static::$mode, $iv);
return base64_encode($iv.$value); return base64_encode($iv.$value);
} }
/**
* Get the random number generator appropriate for the server.
*
* There are a variety of sources to get a random number; however, not all
* of them will be available on every server. We will attempt to use the
* most secure random number generator available.
*
* @return int
*/
protected static function randomizer()
{
if (defined('MCRYPT_DEV_URANDOM'))
{
return MCRYPT_DEV_URANDOM;
}
elseif (defined('MCRYPT_DEV_RANDOM'))
{
return MCRYPT_DEV_RANDOM;
}
return MCRYPT_RAND;
}
/** /**
* Decrypt a string using Mcrypt. * Decrypt a string using Mcrypt.
* *