求加密解密的带私密的函数（要求见内容） discuz!的passport里面的加密解密函数貌似可以. 解决方案 » 免费领取超大流量手机卡，每月29元包185G流量+100分钟通话, 中国电信官方发货 $test_key = 'test';/*** test 加密函数** @param string 等待加密的原字串* @param string 私有密匙(用于解密和加密)** @return string 原字串经过私有密匙加密后的结果*/ function test_encrypt($txt, $key) { // 使用随机数发生器产生 0~32000 的值并 MD5() srand((double)microtime() * 1000000); $encrypt_key = md5(rand(0, 32000)); // 变量初始化 $ctr = 0; $tmp = ''; // for 循环，$i 为从 0 开始，到小于 $txt 字串长度的整数 for($i = 0; $i < strlen($txt); $i++) { // 如果 $ctr = $encrypt_key 的长度，则 $ctr 清零 $ctr = $ctr == strlen($encrypt_key) ? 0 : $ctr; // $tmp 字串在末尾增加两位，其第一位内容为 $encrypt_key 的第 $ctr 位， // 第二位内容为 $txt 的第 $i 位与 $encrypt_key 的 $ctr 位取异或。然后 $ctr = $ctr + 1 $tmp .= $encrypt_key[$ctr].($txt[$i] ^ $encrypt_key[$ctr++]); } // 返回结果，结果为 test_key() 函数返回值的 base64 编码结果 return base64_encode(test_key($tmp, $key)); } /** * test 解密函数 * * @param string 加密后的字串 * @param string 私有密匙(用于解密和加密) * * @return string 字串经过私有密匙解密后的结果 */ function test_decrypt($txt, $key) { // $txt 的结果为加密后的字串经过 base64 解码，然后与私有密匙一起， // 经过 test_key() 函数处理后的返回值 $txt = test_key(base64_decode($txt), $key); // 变量初始化 $tmp = ''; // for 循环，$i 为从 0 开始，到小于 $txt 字串长度的整数 for ($i = 0; $i < strlen($txt); $i++) { // $tmp 字串在末尾增加一位，其内容为 $txt 的第 $i 位， // 与 $txt 的第 $i + 1 位取异或。然后 $i = $i + 1 $tmp .= $txt[$i] ^ $txt[++$i]; } // 返回 $tmp 的值作为结果 return $tmp; } /** * test 密匙处理函数 * * @param string 待加密或待解密的字串 * @param string 私有密匙(用于解密和加密) * * @return string 处理后的密匙 */ function test_key($txt, $encrypt_key) { // 将 $encrypt_key 赋为 $encrypt_key 经 md5() 后的值 $encrypt_key = md5($encrypt_key); // 变量初始化 $ctr = 0; $tmp = ''; // for 循环，$i 为从 0 开始，到小于 $txt 字串长度的整数 for($i = 0; $i < strlen($txt); $i++) { // 如果 $ctr = $encrypt_key 的长度，则 $ctr 清零 $ctr = $ctr == strlen($encrypt_key) ? 0 : $ctr; // $tmp 字串在末尾增加一位，其内容为 $txt 的第 $i 位， // 与 $encrypt_key 的第 $ctr + 1 位取异或。然后 $ctr = $ctr + 1 $tmp .= $txt[$i] ^ $encrypt_key[$ctr++]; } // 返回 $tmp 的值作为结果 return $tmp; } /** * test 信息(数组)编码函数 * * @param array 待编码的数组 * * @return string 数组经编码后的字串 */ function test_encode($array) { // 数组变量初始化 $arrayenc = array(); // 遍历数组 $array，其中 $key 为当前元素的下标，$val 为其对应的值 foreach($array as $key => $val) { // $arrayenc 数组增加一个元素，其内容为 "$key=经过 urlencode() 后的 $val 值" $arrayenc[] = $key.'='.urlencode($val); } // 返回以 "&" 连接的 $arrayenc 的值(implode)，例如 $arrayenc = array('aa', 'bb', 'cc', 'dd')， // 则 implode('&', $arrayenc) 后的结果为 ”aa&bb&cc&dd" return implode('&', $arrayenc); } 使用,记得包含上面的函数.$data = array ( 'A' => '测试1', 'B' => 6, 'C' => 8, 'D' => 1, );$auth = test_encrypt(test_encode($data), $test_key);$verify = md5($auth.$test_key);//这里的验证根据自己的需要写了。结合cookie和session,可以做到相当安全。echo "<a href=abc.php?auth=$auth&verify=$verify>test</a>";abc.phpif($_GET['verify'] != md5($_GET['auth'].$test_key))//这里的验证根据自己的需要写了。结合cookie和session,可以做到相当安全。{ echo "请不要构造非法数据。";//执行你自己的错误处理.}else{parse_str(test_decrypt($_GET['auth'],$test_key));echo $A;echo $B;echo $C;echo $D; 谢谢beiliwenxiao之前看过这段代码记得应该会出现加号(+)和(/)的等回家我再测试一下吧 谢谢你！ 这个加密只有大小写字母的。如果还有不要的字符：传值前，把你不要的字符替换为几个连续的字母或数字。比如+替换为000111。/替换为AAABBB。收到传值后，用000111把+替换回来。用AAABBB把/替换回来。 010); $spfunction7 = array (0x200000,0x4200002,0x4000802,0,0x800,0x4000802,0x200802,0x4200800,0x4200802,0x200000,0,0x4000002,0x2,0x4000000,0x4200002,0x802,0x4000800,0x200802,0x200002,0x4000800,0x4000002,0x4200000,0x4200800,0x200002,0x4200000,0x800,0x802,0x4200802,0x200800,0x2,0x4000000,0x200800,0x4000000,0x200800,0x200000,0x4000802,0x4000802,0x4200002,0x4200002,0x2,0x200002,0x4000000,0x4000800,0x200000,0x4200800,0x802,0x200802,0x4200800,0x802,0x4000002,0x4200802,0x4200000,0x200800,0,0x2,0x4200802,0,0x200802,0x4200000,0x800,0x4000002,0x4000800,0x800,0x200002); $spfunction8 = array (0x10001040,0x1000,0x40000,0x10041040,0x10000000,0x10001040,0x40,0x10000000,0x40040,0x10040000,0x10041040,0x41000,0x10041000,0x41040,0x1000,0x40,0x10040000,0x10000040,0x10001000,0x1040,0x41000,0x40040,0x10040040,0x10041000,0x1040,0,0,0x10040040,0x10000040,0x10001000,0x41040,0x40000,0x41040,0x40000,0x10041000,0x1000,0x40,0x10040040,0x1000,0x41040,0x10001000,0x40,0x10000040,0x10040000,0x10040040,0x10000000,0x40000,0x10001040,0,0x10041040,0x40040,0x10000040,0x10040000,0x10001000,0x10001040,0,0x10041040,0x41000,0x41000,0x1040,0x1040,0x40040,0x10000000,0x10041000); $masks = array (4294967295,2147483647,1073741823,536870911,268435455,134217727,67108863,33554431,16777215,8388607,4194303,2097151,1048575,524287,262143,131071,65535,32767,16383,8191,4095,2047,1023,511,255,127,63,31,15,7,3,1,0); //create the 16 or 48 subkeys we will need $keys = des_createKeys ($key); $m=0; $len = strlen($message); $chunk = 0; //set up the loops for single and triple des $iterations = ((count($keys) == 32) ? 3 : 9); //single or triple des if ($iterations == 3) {$looping = (($encrypt) ? array (0, 32, 2) : array (30, -2, -2));} else {$looping = (($encrypt) ? array (0, 32, 2, 62, 30, -2, 64, 96, 2) : array (94, 62, -2, 32, 64, 2, 30, -2, -2));} //pad the message depending on the padding parameter if ($padding == 2) $message .= " "; //pad the message with spaces else if ($padding == 1) {$temp = chr (8-($len%8)); $message .= $temp . $temp . $temp . $temp . $temp . $temp . $temp . $temp;} //PKCS7 padding else if (!$padding) $message .= (chr(0) . chr(0) . chr(0) . chr(0) . chr(0) . chr(0) . chr(0) . chr(0)); //pad the message out with null bytes //store the result here $result = ""; $tempresult = ""; if ($mode == 1) { //CBC mode $cbcleft = (ord($iv{$m++}) << 24) | (ord($iv{$m++}) << 16) | (ord($iv{$m++}) << 8) | ord($iv{$m++}); $cbcright = (ord($iv{$m++}) << 24) | (ord($iv{$m++}) << 16) | (ord($iv{$m++}) << 8) | ord($iv{$m++}); $m=0; } //loop through each 64 bit chunk of the message while ($m < $len) { $left = (ord($message{$m++}) << 24) | (ord($message{$m++}) << 16) | (ord($message{$m++}) << 8) | ord($message{$m++}); $right = (ord($message{$m++}) << 24) | (ord($message{$m++}) << 16) | (ord($message{$m++}) << 8) | ord($message{$m++}); //for Cipher Block Chaining mode, xor the message with the previous result if ($mode == 1) {if ($encrypt) {$left ^= $cbcleft; $right ^= $cbcright;} else {$cbcleft2 = $cbcleft; $cbcright2 = $cbcright; $cbcleft = $left; $cbcright = $right;}} //first each 64 but chunk of the message must be permuted according to IP $temp = (($left >> 4 & $masks[4]) ^ $right) & 0x0f0f0f0f; $right ^= $temp; $left ^= ($temp << 4); $temp = (($left >> 16 & $masks[16]) ^ $right) & 0x0000ffff; $right ^= $temp; $left ^= ($temp << 16); $temp = (($right >> 2 & $masks[2]) ^ $left) & 0x33333333; $left ^= $temp; $right ^= ($temp << 2); $temp = (($right >> 8 & $masks[8]) ^ $left) & 0x00ff00ff; $left ^= $temp; $right ^= ($temp << 8); $temp = (($left >> 1 & $masks[1]) ^ $right) & 0x55555555; $right ^= $temp; $left ^= ($temp << 1); $left = (($left << 1) | ($left >> 31 & $masks[31])); $right = (($right << 1) | ($right >> 31 & $masks[31])); //do this either 1 or 3 times for each chunk of the message for ($j=0; $j<$iterations; $j+=3) { $endloop = $looping[$j+1]; $loopinc = $looping[$j+2]; //now go through and perform the encryption or decryption for ($i=$looping[$j]; $i!=$endloop; $i+=$loopinc) { //for efficiency $right1 = $right ^ $keys[$i]; $right2 = (($right >> 4 & $masks[4]) | ($right << 28 & 0xffffffff)) ^ $keys[$i+1]; //the result is attained by passing these bytes through the S selection functions $temp = $left; $left = $right; $right = $temp ^ ($spfunction2[($right1 >> 24 & $masks[24]) & 0x3f] | $spfunction4[($right1 >> 16 & $masks[16]) & 0x3f] | $spfunction6[($right1 >> 8 & $masks[8]) & 0x3f] | $spfunction8[$right1 & 0x3f] | $spfunction1[($right2 >> 24 & $masks[24]) & 0x3f] | $spfunction3[($right2 >> 16 & $masks[16]) & 0x3f] | $spfunction5[($right2 >> 8 & $masks[8]) & 0x3f] | $spfunction7[$right2 & 0x3f]); } $temp = $left; $left = $right; $right = $temp; //unreverse left and right } //for either 1 or 3 iterations //move then each one bit to the right $left = (($left >> 1 & $masks[1]) | ($left << 31)); $right = (($right >> 1 & $masks[1]) | ($right << 31)); //now perform IP-1, which is IP in the opposite direction $temp = (($left >> 1 & $masks[1]) ^ $right) & 0x55555555; $right ^= $temp; $left ^= ($temp << 1); $temp = (($right >> 8 & $masks[8]) ^ $left) & 0x00ff00ff; $left ^= $temp; $right ^= ($temp << 8); $temp = (($right >> 2 & $masks[2]) ^ $left) & 0x33333333; $left ^= $temp; $right ^= ($temp << 2); $temp = (($left >> 16 & $masks[16]) ^ $right) & 0x0000ffff; $right ^= $temp; $left ^= ($temp << 16); $temp = (($left >> 4 & $masks[4]) ^ $right) & 0x0f0f0f0f; $right ^= $temp; $left ^= ($temp << 4); //for Cipher Block Chaining mode, xor the message with the previous result if ($mode == 1) {if ($encrypt) {$cbcleft = $left; $cbcright = $right;} else {$left ^= $cbcleft2; $right ^= $cbcright2;}} $tempresult .= (chr($left>>24 & $masks[24]) . chr(($left>>16 & $masks[16]) & 0xff) . chr(($left>>8 & $masks[8]) & 0xff) . chr($left & 0xff) . chr($right>>24 & $masks[24]) . chr(($right>>16 & $masks[16]) & 0xff) . chr(($right>>8 & $masks[8]) & 0xff) . chr($right & 0xff)); $chunk += 8; if ($chunk == 512) {$result .= $tempresult; $tempresult = ""; $chunk = 0;} } //for every 8 characters, or 64 bits in the message //return the result as an array return ($result . $tempresult);} //end of des 代码太长了,贴不下.需要的去 http://www.mbaiwan.com/mdb/des.php 查看 http://www.mbaiwan.com/mbd/des.php 是这个地址,写错了.刚才 楼主看看 kemy88的吧，似乎不错 用phpmailer 发送邮件失败，没有报错 如何在页面上使用PHP语言实现打开指定文件夹的操作？ php定时每天11：30在自动执行php程序代码？ 什么函数可以去掉字符串最后的几个字符比如<br> 分析dedecms遇到的问题 急问！！！ 点一个链接，生成一个文件，这个怎么响应？（结贴快） 新手提问有关2级联动菜单问题，高手请指点一二 求帮助，PHP扫描匹配关键字 PHP Warning: PHP Startup: in Unknown on line 0 插入数据到mysql数据库时特定字符串会出错，请问原因。 download counter php
/**
* test 加密函数
*
* @param string 等待加密的原字串
* @param string 私有密匙(用于解密和加密)
*
* @return string 原字串经过私有密匙加密后的结果
*/
function test_encrypt($txt, $key) { // 使用随机数发生器产生 0~32000 的值并 MD5()
srand((double)microtime() * 1000000);
$encrypt_key = md5(rand(0, 32000)); // 变量初始化
$ctr = 0;
$tmp = ''; // for 循环，$i 为从 0 开始，到小于 $txt 字串长度的整数
for($i = 0; $i < strlen($txt); $i++) {
// 如果 $ctr = $encrypt_key 的长度，则 $ctr 清零
$ctr = $ctr == strlen($encrypt_key) ? 0 : $ctr;
// $tmp 字串在末尾增加两位，其第一位内容为 $encrypt_key 的第 $ctr 位，
// 第二位内容为 $txt 的第 $i 位与 $encrypt_key 的 $ctr 位取异或。然后 $ctr = $ctr + 1
$tmp .= $encrypt_key[$ctr].($txt[$i] ^ $encrypt_key[$ctr++]);
} // 返回结果，结果为 test_key() 函数返回值的 base64 编码结果
return base64_encode(test_key($tmp, $key)); } /**
* test 解密函数
*
* @param string 加密后的字串
* @param string 私有密匙(用于解密和加密)
*
* @return string 字串经过私有密匙解密后的结果
*/
function test_decrypt($txt, $key) { // $txt 的结果为加密后的字串经过 base64 解码，然后与私有密匙一起，
// 经过 test_key() 函数处理后的返回值
$txt = test_key(base64_decode($txt), $key); // 变量初始化
$tmp = ''; // for 循环，$i 为从 0 开始，到小于 $txt 字串长度的整数
for ($i = 0; $i < strlen($txt); $i++) {
// $tmp 字串在末尾增加一位，其内容为 $txt 的第 $i 位，
// 与 $txt 的第 $i + 1 位取异或。然后 $i = $i + 1
$tmp .= $txt[$i] ^ $txt[++$i];
} // 返回 $tmp 的值作为结果
return $tmp; } /**
* test 密匙处理函数
*
* @param string 待加密或待解密的字串
* @param string 私有密匙(用于解密和加密)
*
* @return string 处理后的密匙
*/
function test_key($txt, $encrypt_key) { // 将 $encrypt_key 赋为 $encrypt_key 经 md5() 后的值
$encrypt_key = md5($encrypt_key); // 变量初始化
$ctr = 0;
$tmp = ''; // for 循环，$i 为从 0 开始，到小于 $txt 字串长度的整数
for($i = 0; $i < strlen($txt); $i++) {
// 如果 $ctr = $encrypt_key 的长度，则 $ctr 清零
$ctr = $ctr == strlen($encrypt_key) ? 0 : $ctr;
// $tmp 字串在末尾增加一位，其内容为 $txt 的第 $i 位，
// 与 $encrypt_key 的第 $ctr + 1 位取异或。然后 $ctr = $ctr + 1
$tmp .= $txt[$i] ^ $encrypt_key[$ctr++];
} // 返回 $tmp 的值作为结果
return $tmp; } /**
* test 信息(数组)编码函数
*
* @param array 待编码的数组
*
* @return string 数组经编码后的字串
*/
function test_encode($array) { // 数组变量初始化
$arrayenc = array(); // 遍历数组 $array，其中 $key 为当前元素的下标，$val 为其对应的值
foreach($array as $key => $val) {
// $arrayenc 数组增加一个元素，其内容为 "$key=经过 urlencode() 后的 $val 值"
$arrayenc[] = $key.'='.urlencode($val);
} // 返回以 "&" 连接的 $arrayenc 的值(implode)，例如 $arrayenc = array('aa', 'bb', 'cc', 'dd')，
// 则 implode('&', $arrayenc) 后的结果为 ”aa&bb&cc&dd"
return implode('&', $arrayenc); }
使用,记得包含上面的函数.$data = array
(
'A' => '测试1',
'B' => 6,
'C' => 8,
'D' => 1,
);
$auth = test_encrypt(test_encode($data), $test_key);
$verify = md5($auth.$test_key);//这里的验证根据自己的需要写了。结合cookie和session,可以做到相当安全。echo "<a href=abc.php?auth=$auth&verify=$verify>test</a>";abc.php
if($_GET['verify'] != md5($_GET['auth'].$test_key))//这里的验证根据自己的需要写了。结合cookie和session,可以做到相当安全。
{
echo "请不要构造非法数据。";//执行你自己的错误处理.
}
else
{
parse_str(test_decrypt($_GET['auth'],$test_key));
echo $A;
echo $B;
echo $C;
echo $D;
等回家我再测试一下吧 谢谢你！
010);
$spfunction7 = array (0x200000,0x4200002,0x4000802,0,0x800,0x4000802,0x200802,0x4200800,0x4200802,0x200000,0,0x4000002,0x2,0x4000000,0x4200002,0x802,0x4000800,0x200802,0x200002,0x4000800,0x4000002,0x4200000,0x4200800,0x200002,0x4200000,0x800,0x802,0x4200802,0x200800,0x2,0x4000000,0x200800,0x4000000,0x200800,0x200000,0x4000802,0x4000802,0x4200002,0x4200002,0x2,0x200002,0x4000000,0x4000800,0x200000,0x4200800,0x802,0x200802,0x4200800,0x802,0x4000002,0x4200802,0x4200000,0x200800,0,0x2,0x4200802,0,0x200802,0x4200000,0x800,0x4000002,0x4000800,0x800,0x200002);
$spfunction8 = array (0x10001040,0x1000,0x40000,0x10041040,0x10000000,0x10001040,0x40,0x10000000,0x40040,0x10040000,0x10041040,0x41000,0x10041000,0x41040,0x1000,0x40,0x10040000,0x10000040,0x10001000,0x1040,0x41000,0x40040,0x10040040,0x10041000,0x1040,0,0,0x10040040,0x10000040,0x10001000,0x41040,0x40000,0x41040,0x40000,0x10041000,0x1000,0x40,0x10040040,0x1000,0x41040,0x10001000,0x40,0x10000040,0x10040000,0x10040040,0x10000000,0x40000,0x10001040,0,0x10041040,0x40040,0x10000040,0x10040000,0x10001000,0x10001040,0,0x10041040,0x41000,0x41000,0x1040,0x1040,0x40040,0x10000000,0x10041000);
$masks = array (4294967295,2147483647,1073741823,536870911,268435455,134217727,67108863,33554431,16777215,8388607,4194303,2097151,1048575,524287,262143,131071,65535,32767,16383,8191,4095,2047,1023,511,255,127,63,31,15,7,3,1,0); //create the 16 or 48 subkeys we will need
$keys = des_createKeys ($key);
$m=0;
$len = strlen($message);
$chunk = 0;
//set up the loops for single and triple des
$iterations = ((count($keys) == 32) ? 3 : 9); //single or triple des
if ($iterations == 3) {$looping = (($encrypt) ? array (0, 32, 2) : array (30, -2, -2));}
else {$looping = (($encrypt) ? array (0, 32, 2, 62, 30, -2, 64, 96, 2) : array (94, 62, -2, 32, 64, 2, 30, -2, -2));} //pad the message depending on the padding parameter
if ($padding == 2) $message .= " "; //pad the message with spaces
else if ($padding == 1) {$temp = chr (8-($len%8)); $message .= $temp . $temp . $temp . $temp . $temp . $temp . $temp . $temp;} //PKCS7 padding
else if (!$padding) $message .= (chr(0) . chr(0) . chr(0) . chr(0) . chr(0) . chr(0) . chr(0) . chr(0)); //pad the message out with null bytes //store the result here
$result = "";
$tempresult = ""; if ($mode == 1) { //CBC mode
$cbcleft = (ord($iv{$m++}) << 24) | (ord($iv{$m++}) << 16) | (ord($iv{$m++}) << 8) | ord($iv{$m++});
$cbcright = (ord($iv{$m++}) << 24) | (ord($iv{$m++}) << 16) | (ord($iv{$m++}) << 8) | ord($iv{$m++});
$m=0;
} //loop through each 64 bit chunk of the message
while ($m < $len) {
$left = (ord($message{$m++}) << 24) | (ord($message{$m++}) << 16) | (ord($message{$m++}) << 8) | ord($message{$m++});
$right = (ord($message{$m++}) << 24) | (ord($message{$m++}) << 16) | (ord($message{$m++}) << 8) | ord($message{$m++}); //for Cipher Block Chaining mode, xor the message with the previous result
if ($mode == 1) {if ($encrypt) {$left ^= $cbcleft; $right ^= $cbcright;} else {$cbcleft2 = $cbcleft; $cbcright2 = $cbcright; $cbcleft = $left; $cbcright = $right;}} //first each 64 but chunk of the message must be permuted according to IP
$temp = (($left >> 4 & $masks[4]) ^ $right) & 0x0f0f0f0f; $right ^= $temp; $left ^= ($temp << 4);
$temp = (($left >> 16 & $masks[16]) ^ $right) & 0x0000ffff; $right ^= $temp; $left ^= ($temp << 16);
$temp = (($right >> 2 & $masks[2]) ^ $left) & 0x33333333; $left ^= $temp; $right ^= ($temp << 2);
$temp = (($right >> 8 & $masks[8]) ^ $left) & 0x00ff00ff; $left ^= $temp; $right ^= ($temp << 8);
$temp = (($left >> 1 & $masks[1]) ^ $right) & 0x55555555; $right ^= $temp; $left ^= ($temp << 1); $left = (($left << 1) | ($left >> 31 & $masks[31]));
$right = (($right << 1) | ($right >> 31 & $masks[31])); //do this either 1 or 3 times for each chunk of the message
for ($j=0; $j<$iterations; $j+=3) {
$endloop = $looping[$j+1];
$loopinc = $looping[$j+2];
//now go through and perform the encryption or decryption
for ($i=$looping[$j]; $i!=$endloop; $i+=$loopinc) { //for efficiency
$right1 = $right ^ $keys[$i];
$right2 = (($right >> 4 & $masks[4]) | ($right << 28 & 0xffffffff)) ^ $keys[$i+1];
//the result is attained by passing these bytes through the S selection functions
$temp = $left;
$left = $right;
$right = $temp ^ ($spfunction2[($right1 >> 24 & $masks[24]) & 0x3f] | $spfunction4[($right1 >> 16 & $masks[16]) & 0x3f]
| $spfunction6[($right1 >> 8 & $masks[8]) & 0x3f] | $spfunction8[$right1 & 0x3f]
| $spfunction1[($right2 >> 24 & $masks[24]) & 0x3f] | $spfunction3[($right2 >> 16 & $masks[16]) & 0x3f]
| $spfunction5[($right2 >> 8 & $masks[8]) & 0x3f] | $spfunction7[$right2 & 0x3f]);
}
$temp = $left; $left = $right; $right = $temp; //unreverse left and right
} //for either 1 or 3 iterations //move then each one bit to the right
$left = (($left >> 1 & $masks[1]) | ($left << 31));
$right = (($right >> 1 & $masks[1]) | ($right << 31)); //now perform IP-1, which is IP in the opposite direction
$temp = (($left >> 1 & $masks[1]) ^ $right) & 0x55555555; $right ^= $temp; $left ^= ($temp << 1);
$temp = (($right >> 8 & $masks[8]) ^ $left) & 0x00ff00ff; $left ^= $temp; $right ^= ($temp << 8);
$temp = (($right >> 2 & $masks[2]) ^ $left) & 0x33333333; $left ^= $temp; $right ^= ($temp << 2);
$temp = (($left >> 16 & $masks[16]) ^ $right) & 0x0000ffff; $right ^= $temp; $left ^= ($temp << 16);
$temp = (($left >> 4 & $masks[4]) ^ $right) & 0x0f0f0f0f; $right ^= $temp; $left ^= ($temp << 4); //for Cipher Block Chaining mode, xor the message with the previous result
if ($mode == 1) {if ($encrypt) {$cbcleft = $left; $cbcright = $right;} else {$left ^= $cbcleft2; $right ^= $cbcright2;}}
$tempresult .= (chr($left>>24 & $masks[24]) . chr(($left>>16 & $masks[16]) & 0xff) . chr(($left>>8 & $masks[8]) & 0xff) . chr($left & 0xff) . chr($right>>24 & $masks[24]) . chr(($right>>16 & $masks[16]) & 0xff) . chr(($right>>8 & $masks[8]) & 0xff) . chr($right & 0xff)); $chunk += 8;
if ($chunk == 512) {$result .= $tempresult; $tempresult = ""; $chunk = 0;}
} //for every 8 characters, or 64 bits in the message //return the result as an array
return ($result . $tempresult);
} //end of des