note 99263 modified in ref.mcrypt by danbrown
| From: | danbrown@php.net | Date: | Fri, 06 Aug 2010 18:57:02 +0000 |
| Subject: | note 99263 modified in ref.mcrypt by danbrown | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-171440@lists.php.net to get a copy of this message | ||
This works completely with mysql aes, even long keys.
<?php
function mysql_aes_decrypt($val,$ky)
{
$key="\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
for($a=0;$a<strlen($ky);$a++)
$key[$a%16]=chr(ord($key[$a%16]) ^ ord($ky[$a]));
$mode = MCRYPT_MODE_ECB;
$enc = MCRYPT_RIJNDAEL_128;
$dec = @mcrypt_decrypt($enc, $key, $val, $mode, @mcrypt_create_iv( @mcrypt_get_iv_size($enc,
$mode), MCRYPT_DEV_URANDOM ) );
return rtrim($dec,(( ord(substr($dec,strlen($dec)-1,1))>=0 and ord(substr($dec,
strlen($dec)-1,1))<=16)? chr(ord( substr($dec,strlen($dec)-1,1))):null));
}
function mysql_aes_encrypt($val,$ky)
{
$key="\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
for($a=0;$a<strlen($ky);$a++)
$key[$a%16]=chr(ord($key[$a%16]) ^ ord($ky[$a]));
$mode=MCRYPT_MODE_ECB;
$enc=MCRYPT_RIJNDAEL_128;
$val=str_pad($val, (16*(floor(strlen($val) / 16)+(strlen($val) % 16==0?2:1))),
chr(16-(strlen($val) % 16)));
return mcrypt_encrypt($enc, $key, $val, $mode, mcrypt_create_iv( mcrypt_get_iv_size($enc,
$mode), MCRYPT_DEV_URANDOM));
}
?>
--was--
This works completely with mysql aes, even long keys.
function mysql_aes_decrypt($val,$ky)
{
$key="\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
for($a=0;$a<strlen($ky);$a++)
$key[$a%16]=chr(ord($key[$a%16]) ^ ord($ky[$a]));
$mode = MCRYPT_MODE_ECB;
$enc = MCRYPT_RIJNDAEL_128;
$dec = @mcrypt_decrypt($enc, $key, $val, $mode, @mcrypt_create_iv( @mcrypt_get_iv_size($enc,
$mode), MCRYPT_DEV_URANDOM ) );
return rtrim($dec,(( ord(substr($dec,strlen($dec)-1,1))>=0 and ord(substr($dec,
strlen($dec)-1,1))<=16)? chr(ord( substr($dec,strlen($dec)-1,1))):null));
}
function mysql_aes_encrypt($val,$ky)
{
$key="\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
for($a=0;$a<strlen($ky);$a++)
$key[$a%16]=chr(ord($key[$a%16]) ^ ord($ky[$a]));
$mode=MCRYPT_MODE_ECB;
$enc=MCRYPT_RIJNDAEL_128;
$val=str_pad($val, (16*(floor(strlen($val) / 16)+(strlen($val) % 16==0?2:1))),
chr(16-(strlen($val) % 16)));
return mcrypt_encrypt($enc, $key, $val, $mode, mcrypt_create_iv( mcrypt_get_iv_size($enc,
$mode), MCRYPT_DEV_URANDOM));
}
http://php.net/manual/en/ref.mcrypt.php