egroupware_official/phpgwapi/inc/adodb/session/adodb-encrypt-mcrypt.php
2004-08-02 08:30:47 +00:00

110 lines
1.8 KiB
PHP

<?php
/*
V4.01 23 Oct 2003 (c) 2000-2004 John Lim (jlim@natsoft.com.my). All rights reserved.
Contributed by Ross Smith (adodb@netebb.com).
Released under both BSD license and Lesser GPL library license.
Whenever there is any discrepancy between the two licenses,
the BSD license will take precedence.
Set tabs to 4 for best viewing.
*/
if (!function_exists('mcrypt_encrypt')) {
trigger_error('Mcrypt functions are not available', E_USER_ERROR);
return 0;
}
/**
*/
class ADODB_Encrypt_MCrypt {
/**
*/
var $_cipher;
/**
*/
var $_mode;
/**
*/
var $_source;
/**
*/
function getCipher() {
return $this->_cipher;
}
/**
*/
function setCipher($cipher) {
$this->_cipher = $cipher;
}
/**
*/
function getMode() {
return $this->_mode;
}
/**
*/
function setMode($mode) {
$this->_mode = $mode;
}
/**
*/
function getSource() {
return $this->_source;
}
/**
*/
function setSource($source) {
$this->_source = $source;
}
/**
*/
function ADODB_Encrypt_MCrypt($cipher = null, $mode = null, $source = null) {
if (!$cipher) {
$cipher = MCRYPT_RIJNDAEL_256;
}
if (!$mode) {
$mode = MCRYPT_MODE_ECB;
}
if (!$source) {
$source = MCRYPT_RAND;
}
$this->_cipher = $cipher;
$this->_mode = $mode;
$this->_source = $source;
}
/**
*/
function write($data, $key) {
$iv_size = mcrypt_get_iv_size($this->_cipher, $this->_mode);
$iv = mcrypt_create_iv($iv_size, $this->_source);
return mcrypt_encrypt($this->_cipher, $key, $data, $this->_mode, $iv);
}
/**
*/
function read($data, $key) {
$iv_size = mcrypt_get_iv_size($this->_cipher, $this->_mode);
$iv = mcrypt_create_iv($iv_size, $this->_source);
$rv = mcrypt_decrypt($this->_cipher, $key, $data, $this->_mode, $iv);
return rtrim($rv, "\0");
}
}
return 1;
?>