<?php $key = "0123456789012345"; $secret = "PHP Testfest 2008"; $cipher = MCRYPT_RIJNDAEL_128; $iv = mcrypt_create_iv(mcrypt_get_iv_size($cipher, MCRYPT_MODE_ECB), MCRYPT_RAND); $enc_data = mcrypt_ofb($cipher, $key, $secret, MCRYPT_ENCRYPT, $iv); // we have to trim as AES rounds the blocks and decrypt doesnt detect that echo trim(mcrypt_ofb($cipher, $key, $enc_data, MCRYPT_DECRYPT, $iv)) . "\n"; // a warning must be issued if we don't use a IV on a AES cipher, that usually requires an IV mcrypt_ofb($cipher, $key, $enc_data, MCRYPT_DECRYPT, $iv);
/**
* sessDecrypt - Decrypts encrypted text created by the sessEncrypt member.
* It needs to be passed the same Initialization Vector (IV) used in the
* encryption process. When you have a few/many fields to decrypt in one
* script cycle, choose to keep the mcrypt module open to speed up
* decryption (only for libmcrypt >= 2.4.x). A correctly decrypted field
* will be returned as a string, so if you're expecting/wanting an integer
* then you have to type cast or use intval() function.
*
* @param string $_enc Pass the encrypted text you would like to decrypt.
* @param string $_IV Pass the same IV used in the encryption phase.
* @param bool $_keep_open TRUE to keep mcrypt module open, FALSE close.
* @return mixed Returns the original plain text or FALSE on error.
* @access public
*/
function sessDecrypt($_enc, $_IV, $_keep_open = FALSE)
{
static $_open_already = FALSE;
// Open encrypt flag For ver >= 2.4.x
static $_module = NULL;
if (!is_bool($_keep_open)) {
$_keep_open = FALSE;
}
if (is_numeric($_IV) && strlen($_IV) > 0 && strlen($_IV) < 4 && intval($_IV) > 0 && intval($_IV) < 501) {
$_text = $this->sessDecode($_enc, intval($_IV));
} else {
if ($this->_MCRYPT && !empty($this->_ENC_ALGO) && !empty($this->_ENC_MODE)) {
$_IV = @base64_decode($_IV);
$_enc = @base64_decode($_enc);
if ($this->_MCRYPT_LATEST) {
// For >= 2.4.x
if (!$_open_already) {
$_module = @mcrypt_module_open($this->_ENC_ALGO, '', $this->_ENC_MODE, '');
if (FALSE === $_module) {
// Could not open encryption module for decryption
$this->_setErrMsg('DEC_OPEN_FAIL', NULL, $this->_ENC_ALGO, $this->_ENC_MODE);
$this->_handleErrors();
return FALSE;
}
$_open_already = TRUE;
}
$_key = substr($this->_ENC_KEY_HASHED, 0, @mcrypt_enc_get_key_size($_module));
$_result = @mcrypt_generic_init($_module, $_key, $_IV);
if ($_result < 0) {
switch ($_result) {
case -3:
// Key length for decryption is incorrect
$this->_setErrMsg('DEC_KEY_LEN', NULL, $this->_ENC_ALGO, $this->_ENC_MODE, strlen($_key));
case -4:
// There were memory allocation problems - decrypt
$this->_setErrMsg('DEC_MEMORY', NULL, $this->_ENC_ALGO, $this->_ENC_MODE);
default:
// There were unknown errors while trying to decrypt
$this->_setErrMsg('DEC_UNKNOWN', NULL, $this->_ENC_ALGO, $this->_ENC_MODE);
}
$this->_handleErrors();
return FALSE;
}
// trim is especially needed in Cipher Block Chaining (CBC) mode
$_text = trim(@mdecrypt_generic($_module, $_enc));
if (!$_keep_open) {
@mcrypt_generic_deinit($_module);
@mcrypt_module_close($_module);
$_open_already = FALSE;
$_module = NULL;
}
} else {
// For 2.2.x
$_key = substr($this->_ENC_KEY_HASHED, 0, @mcrypt_get_key_size($this->_ENC_ALGO));
switch ($this->_ENC_MODE) {
case MCRYPT_MODE_ECB:
$_text = @mcrypt_ecb($this->_ENC_ALGO, $_key, $_enc, MCRYPT_DECRYPT);
break;
case MCRYPT_MODE_CFB:
$_text = @mcrypt_cfb($this->_ENC_ALGO, $_key, $_enc, MCRYPT_DECRYPT, $_IV);
break;
case MCRYPT_MODE_OFB:
$_text = @mcrypt_ofb($this->_ENC_ALGO, $_key, $_enc, MCRYPT_DECRYPT, $_IV);
break;
default:
$_text = @mcrypt_cbc($this->_ENC_ALGO, $_key, $_enc, MCRYPT_DECRYPT, $_IV);
}
$_text = trim($_text);
// Especially needed for CBC mode
}
} else {
$_text = FALSE;
}
}
return $_text;
}
import_request_variables(); mcrypt_generic_end(); mysql_db_query(); mysql_escape_string(); mysql_list_dbs(); mysqli_bind_param(); mysqli_bind_result(); mysqli_client_encoding(); mysqli_fetch(); mysqli_param_count(); mysqli_get_metadata(); mysqli_send_long_data(); magic_quotes_runtime(); session_register(); session_unregister(); session_is_registered(); set_magic_quotes_runtime(); set_socket_blocking(); split(); spliti(); sql_regcase(); php_logo_guid(); php_egg_logo_guid(); php_real_logo_guid(); zend_logo_guid(); datefmt_set_timezone_id(); mcrypt_ecb(); mcrypt_cbc(); mcrypt_cfb(); mcrypt_ofb();
$encrypted = mcrypt_cfb(MCRYPT_RIJNDAEL_128, substr($key, 0, 32), $CC, MCRYPT_ENCRYPT, substr($key, 32, 16));
$decrypted = mcrypt_cfb(MCRYPT_RIJNDAEL_128, substr($key, 0, 32), $encrypted, MCRYPT_DECRYPT, substr($key, 32, 16));
VERIFY($encrypted !== $decrypted);
VS(trim((string) $decrypted), $CC);
//////////////////////////////////////////////////////////////////////
$key = "123456789012345678901234567890123456789012345678901234567890";
$CC = "4007000000027";
$encrypted = mcrypt_ecb(MCRYPT_RIJNDAEL_128, substr($key, 0, 32), $CC, MCRYPT_ENCRYPT, substr($key, 32, 16));
$decrypted = mcrypt_ecb(MCRYPT_RIJNDAEL_128, substr($key, 0, 32), $encrypted, MCRYPT_DECRYPT, substr($key, 32, 16));
VERIFY($encrypted !== $decrypted);
VS(trim((string) $decrypted), $CC);
//////////////////////////////////////////////////////////////////////
$key = "123456789012345678901234567890123456789012345678901234567890";
$CC = "4007000000027";
$encrypted = mcrypt_ofb(MCRYPT_RIJNDAEL_128, substr($key, 0, 32), $CC, MCRYPT_ENCRYPT, substr($key, 32, 16));
$decrypted = mcrypt_ofb(MCRYPT_RIJNDAEL_128, substr($key, 0, 32), $encrypted, MCRYPT_DECRYPT, substr($key, 32, 16));
VERIFY($encrypted !== $decrypted);
VS($decrypted, $CC);
//////////////////////////////////////////////////////////////////////
VS(mcrypt_get_block_size("tripledes", "ecb"), 8);
VS(mcrypt_get_cipher_name(MCRYPT_TRIPLEDES), "3DES");
VS(mcrypt_get_iv_size(MCRYPT_CAST_256, MCRYPT_MODE_CFB), 16);
VS(mcrypt_get_iv_size("des", "ecb"), 8);
VS(mcrypt_get_key_size("tripledes", "ecb"), 24);
$td = mcrypt_module_open("cast-256", "", "cfb", "");
VS(mcrypt_enc_get_algorithms_name($td), "CAST-256");
$td = mcrypt_module_open("tripledes", "", "ecb", "");
VS(mcrypt_enc_get_block_size($td), 8);
$td = mcrypt_module_open("cast-256", "", "cfb", "");
VS(mcrypt_enc_get_iv_size($td), 16);
$td = mcrypt_module_open("tripledes", "", "ecb", "");
