phpcdes加密

❶ php代碼加密怎麼解密

$key="Thisissupposedtobeasecretkey!!!";
functionkeyED($txt,$encrypt_key)
{
$encrypt_key=md5($encrypt_key);
$ctr=0;
$tmp="";
for($i=0;$i<strlen($txt);$i++){
if($ctr==strlen($encrypt_key))$ctr=0;
$tmp.=substr($txt,$i,1)^substr($encrypt_key,$ctr,1);
$ctr++;
}
return$tmp;
}
functionencrypt($txt,$key)
{
srand((double)microtime()*1000000);
$encrypt_key=md5(rand(0,32000));
$ctr=0;
$tmp="";
for($i=0;$i<strlen($txt);$i++){
if($ctr==strlen($encrypt_key))$ctr=0;
$tmp.=substr($encrypt_key,$ctr,1).
(substr($txt,$i,1)^substr($encrypt_key,$ctr,1));
$ctr++;
}
returnkeyED($tmp,$key);
}
functiondecrypt($txt,$key)
{
$txt=keyED($txt,$key);
$tmp="";
for($i=0;$i<strlen($txt);$i++){
$md5=substr($txt,$i,1);
$i++;
$tmp.=(substr($txt,$i,1)^$md5);
}
return$tmp;
}
$string="HelloWorld!!!";
//encrypt$string,andstoreitin$enc_text
$enc_text=encrypt($string,$key);
//decrypttheencryptedtext$enc_text,andstoreitin$dec_text
$dec_text=decrypt($enc_text,$key);

//加密
functionstr2hex($s)
{
$r="";
$hexes=array("0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f");
for($i=0;$i<strlen($s);$i++)=""$r.=($hexes[(ord($s{$i})>>4)].$hexes[(ord($s{$i})&0xf)]);
return$r;
}

//解密
functionhex2str($s)
{
$r="";
for($i=0;$i<strlen($s);$i=""+="2)"{
$x1=ord($s{$i});
$x1=($x1>=48&&$x1<58)?$x1-48:$x1-97+10;
$x2=ord($s{$i+1});
$x2=($x2>=48&&$x2<58)?$x2-48:$x2-97+10;
$r.=chr((($x1<<4)&0xf0)|($x2&0x0f));
}
return$r;
}
echostr2hex("山東");
echo"
";
echohex2str("c9bdb6ab");
?>

❷ php excel加密的實現方法有什麼

PHP中的加密方式有如下幾種
1. MD5加密

string md5 ( string $str [, bool $raw_output = false ] )
參數
str -- 原始字元串。
raw_output -- 如果可選的 raw_output 被設置為 TRUE，那麼 MD5 報文摘要將以16位元組長度的原始二進制格式返回。
這是一種不可逆加密，執行如下的代碼
$password = 『123456『;
echo md5($password);
得到結果是
2. Crype加密
string crypt ( string $str [, string $salt ] )
crypt() 返回一個基於標准 UNIX DES 演算法或系統上其他可用的替代演算法的散列字元串。
參數
str -- 待散列的字元串。
salt -- 可選的鹽值字元串。如果沒有提供，演算法行為將由不同的演算法實現決定，並可能導致不可預料的結束。
這是也一種不可逆加密，執行如下的代碼
代碼如下:
$password = 『123456『;
$salt = "test";// 只取前兩個
echo crypt($password, $salt);
得到的結果是teMGKvBPcptKo
使用自動鹽值的例子如下：
代碼如下:
$password = crypt(『mypassword『); // 自動生成鹽值
/* 你應當使用 crypt() 得到的完整結果作為鹽值進行密碼校驗，以此來避免使用不同散列演算法導致的問題。（如上所述，基於標准 DES 演算法的密碼散列使用 2 字元鹽值，但是基於 MD5 演算法的散列使用 12 個字元鹽值。）*/
if (crypt(『mypassword『, $password) == $password) {
echo "Password verified!";
}
執行結果是輸出 Password verified!
以不同散列類型使用 crypt()的例子如下：
代碼如下:
if (CRYPT_STD_DES == 1) {
echo 『Standard DES: 『 . crypt(『rasmuslerdorf『, 『rl『) . "\n";
}
if (CRYPT_EXT_DES == 1) {
echo 『Extended DES: 『 . crypt(『rasmuslerdorf『, 『_J9..rasm『) . "\n";
}
if (CRYPT_MD5 == 1) {
echo 『MD5: 『 . crypt(『rasmuslerdorf『, 『$1$rasmusle$『) . "\n";
}
if (CRYPT_BLOWFISH == 1) {
echo 『Blowfish: 『 . crypt(『rasmuslerdorf『, 『$2a$07$usesomesillystringforsalt$『) . "\n";
}
if (CRYPT_SHA256 == 1) {
echo 『SHA-256: 『 . crypt(『rasmuslerdorf『, 『$5$rounds=5000$usesomesillystringforsalt$『) . "\n";
}
if (CRYPT_SHA512 == 1) {
echo 『SHA-512: 『 . crypt(『rasmuslerdorf『, 『$6$rounds=5000$usesomesillystringforsalt$『) . "\n";
}
其結果如下
Standard DES: rl.3StKT.4T8M
Extended DES: _J9..rasmBYk8r9AiWNc
MD5: $1$rasmusle$rISCgZzpwk3UhDidwXvin0
Blowfish: $2a$07$./U9C8sBjqp8I90dH6hi
SHA-256: $5$rounds=5000$usesomesillystri$/Tp.6
SHA-512: $6$rounds=5000$usesomesillystri$.S5KPgErtP/EN5mcO.ChWQW21
在 crypt() 函數支持多重散列的系統上，下面的常量根據相應的類型是否可用被設置為 0 或 1：
CRYPT_STD_DES - 基於標准 DES 演算法的散列使用 "./0-9A-Za-z" 字元中的兩個字元作為鹽值。在鹽值中使用非法的字元將導致 crypt() 失敗。
CRYPT_EXT_DES - 擴展的基於 DES 演算法的散列。其鹽值為 9 個字元的字元串，由 1 個下劃線後面跟著 4 位元組循環次數和 4 位元組鹽值組成。它們被編碼成可列印字元，每個字元 6 位，有效位最少的優先。0 到 63 被編碼為 "./0-9A-Za-z"。在鹽值中使用非法的字元將導致 crypt() 失敗。
CRYPT_MD5 - MD5 散列使用一個以 $1$ 開始的 12 字元的字元串鹽值。
CRYPT_BLOWFISH - Blowfish 演算法使用如下鹽值：「$2a$」，一個兩位 cost 參數，「$」 以及 64 位由 「./0-9A-Za-z」 中的字元組合而成的字元串。在鹽值中使用此范圍之外的字元將導致 crypt() 返回一個空字元串。兩位 cost 參數是循環次數以 2 為底的對數，它的范圍是 04-31，超出這個范圍將導致 crypt() 失敗。
CRYPT_SHA256 - SHA-256 演算法使用一個以 $5$ 開頭的 16 字元字元串鹽值進行散列。如果鹽值字元串以 「rounds=$」 開頭，N 的數字值將被用來指定散列循環的執行次數，這點很像 Blowfish 演算法的 cost 參數。默認的循環次數是 5000，最小是 1000，最大是 999,999,999。超出這個范圍的 N 將會被轉換為最接近的值。
CRYPT_SHA512 - SHA-512 演算法使用一個以 $6$ 開頭的 16 字元字元串鹽值進行散列。如果鹽值字元串以 「rounds=$」 開頭，N 的數字值將被用來指定散列循環的執行次數，這點很像 Blowfish 演算法的 cost 參數。默認的循環次數是 5000，最小是 1000，最大是 999,999,999。超出這個范圍的 N 將會被轉換為最接近的值。
3. Sha1加密

string sha1 ( string $str [, bool $raw_output = false ] )
參數
str -- 輸入字元串。
raw_output -- 如果可選的 raw_output 參數被設置為 TRUE，那麼 sha1 摘要將以 20 字元長度的原始格式返回，否則返回值是一個 40 字元長度的十六進制數字。
這是也一種不可逆加密，執行如下代碼：
$password = 『123456『;
echo sha1($password);
得到的結果是
以上幾種雖然是不可逆加密，但是也可以根據查字典的方式去解密。如下的地址中就提供了可以將上面的加密結果解密出來的功能。
http://www.cmd5.com/
那大家是不是加了就算加了密，也沒用啊，其實不然，只要你的加密足夠復雜，被破解出的可能性就越小，比如用以上三種加密方式混合加密，之後我會推薦給大家一個php的加密庫。
4. URL加密
string urlencode ( string $str )
此函數便於將字元串編碼並將其用於 URL 的請求部分，同時它還便於將變數傳遞給下一頁。
返回字元串，此字元串中除了 -_. 之外的所有非字母數字字元都將被替換成百分號（%）後跟兩位十六進制數，空格則編碼為加號（+）。此編碼與 WWW 表單 POST 數據的編碼方式是一樣的，同時與 application/x-www-form-urlencoded 的媒體類型編碼方式一樣。由於歷史原因，此編碼在將空格編碼為加號（+）方面與 RFC1738 編碼不同。
string urldecode ( string $str )
解碼給出的已編碼字元串中的任何 %##。 加號（『+『）被解碼成一個空格字元。
這是一種可逆加密，urlencode方法用於加密，urldecode方法用於解密，執行如下代碼：
$url = 『http://www.xxx.com/CraryPrimitiveMan/『;
$encodeUrl = urlencode($url);
echo $encodeUrl . "\n";// 如果是在網頁上展示的，就將\n修改為

echo urldecode($encodeUrl);
得到的結果如下
http%3A%2F%2Fwww.xxx.com%2FCraryPrimitiveMan%2F
http://www.xxx.com/CraryPrimitiveMan/
基於RFC 3986的加密URL的方法如下：
代碼如下:
function myUrlEncode($string) {
$entities = array(『%21『, 『%2A『, 『%27『, 『%28『, 『%29『, 『%3B『, 『%3A『, 『%40『, 『%26『, 『%3D『, 『%2B『, 『%24『, 『%2C『, 『%2F『, 『%3F『, 『%25『, 『%23『, 『%5B『, 『%5D『);
$replacements = array(『!『, 『*『, "『", "(", ")", ";", ":", "@", "&", "=", "+", "$", ",", "/", "?", "%", "#", "[", "]");
return str_replace($entities, $replacements, urlencode($string));
}
5. Base64信息編碼加密

string base64_encode ( string $data )
使用 base64 對 data 進行編碼。
設計此種編碼是為了使二進制數據可以通過非純 8-bit 的傳輸層傳輸，例如電子郵件的主體。
Base64-encoded 數據要比原始數據多佔用 33% 左右的空間。
string base64_decode ( string $data [, bool $strict = false ] )
對 base64 編碼的 data 進行解碼。
參數
data -- 編碼過的數據。
strict -- 如果輸入的數據超出了 base64 字母表，則返回 FALSE。
執行如下代碼：
代碼如下:
$name = 『CraryPrimitiveMan『;
$encodeName = base64_encode($name);
echo $encodeName . "\n";
echo base64_decode($encodeName);
其結果如下
代碼如下:
Q3JhcnlQcmltaXRpdmVNYW4=
CraryPrimitiveMan
推薦phpass

經 phpass 0.3 測試，在存入資料庫之前進行哈希保護用戶密碼的標准方式。 許多常用的哈希演算法如 md5，甚至是 sha1 對於密碼存儲都是不安全的， 因為駭客能夠使用那些演算法輕而易舉地破解密碼。
對密碼進行哈希最安全的方法是使用 bcrypt 演算法。開源的 phpass 庫以一個易於使用的類來提供該功能。
代碼如下:
<?php
// Include phpass 庫
require_once(『phpass-03/PasswordHash.php『)
// 初始化散列器為不可移植(這樣更安全)
$hasher = new PasswordHash(8, false);
// 計算密碼的哈希值。$hashedPassword 是一個長度為 60 個字元的字元串.
$hashedPassword = $hasher->HashPassword(『my super cool password『);
// 你現在可以安全地將 $hashedPassword 保存到資料庫中!
// 通過比較用戶輸入內容（產生的哈希值）和我們之前計算出的哈希值，來判斷用戶是否輸入了正確的密碼
$hasher->CheckPassword(『the wrong password『, $hashedPassword); // false
$hasher->CheckPassword(『my super cool password『, $hashedPassword); // true
?>

❸ thinkphp資料庫配置信息加密怎麼處理

今天有一個朋友問我thinkphp的這個問題，剛好網路搜索到你這個問題。已經解決。就幫你解答一下這個問題。
首先我嘗試在入口文件封裝一個加密函數，我用php des 加密，然後在配置文件config.php調用。然後在控制器裡面使用，列印配置文件:mp(C());//輸出所有的配置文件信息, 雖然能看到正確的數據用戶名和密碼，但是會報錯。失敗告終。
我說一下我的解決方法。很簡單。
1:把配置文件裡面的用戶名，密碼，資料庫名瞎寫一寫，別人看到你的代碼的配置文件看到的就是錯誤的資料庫名和密碼了。比如：
'DB_NAME' => 'SB', // 資料庫名
'DB_USER' => 'ni_da_ye', // 用戶名
'DB_PWD' => 'da_da_bi', // 密碼
在每個控制器文件裡面。加入一段代碼。
比如你的IndexController.class.php文件。加下面的代碼。
/* 初始化方法*/
public function __construct(){
parent::__construct();

C("DB_NAME",decrypt('712349721937491237'));//資料庫名，
C('DB_USER',decrypt('712349721937491237'));//用戶名
C('DB_PWD',decrypt('712349721937491237'));//密碼
}
看清楚了嗎？
decrypt（）這個函數就是我封裝的一個加密函數，親自測試沒有錯誤。可能會犧牲一些性能。但是保證了用戶名，密碼，資料庫名沒有泄露。甚至你都可以把資料庫連接地址也加密一下。希望能幫到你。
PHP加密函數可以考慮用des，aes這些可逆加密。別用什麼md4，md5.

❹ 如何用php實現和c#一致的DES加密解密

PHP實現和c#一致的DES加密解密，可以從網上搜到一大堆，但是測試後發現都沒法用。以下正確代碼是我經過苦苦才找到的。希望大家在系統整合時能用的上。

注意：key的長度為8位以內。

[csharp]viewplainprint?
//C#版DES加解密演算法
usingSystem;
usingSystem.Data;
usingSystem.Configuration;
usingSystem.Web;
usingSystem.Web.Security;
usingSystem.Web.UI;
usingSystem.Web.UI.WebControls;
usingSystem.Web.UI.WebControls.WebParts;
usingSystem.Web.UI.HtmlControls;
usingSystem.Data.SqlClient;
usingSystem.Security.Cryptography;
usingSystem.IO;
usingSystem.Text;
publicclassDes{
//加解密密鑰
privatestaticstringskey="12345678";
//初始化向量
privatestaticbyte[]DESIV={0x12,0x34,0x56,0x78,0x90,0xAB,0xCD,0xEF};

#regionDESEnCodeDES加密
publicstaticstringDESEnCode(stringpToEncrypt,stringsKey)
{
pToEncrypt=HttpContext.Current.Server.UrlEncode(pToEncrypt);
DESCryptoServiceProviderdes=newDESCryptoServiceProvider();
byte[]inputByteArray=Encoding.GetEncoding("UTF-8").GetBytes(pToEncrypt);

//建立加密對象的密鑰和偏移量
//原文使用ASCIIEncoding.ASCII方法的GetBytes方法
//使得輸入密碼必須輸入英文文本
des.Key=ASCIIEncoding.ASCII.GetBytes(sKey);
des.IV=ASCIIEncoding.ASCII.GetBytes(sKey);
MemoryStreamms=newMemoryStream();
CryptoStreamcs=newCryptoStream(ms,des.CreateEncryptor(),CryptoStreamMode.Write);

cs.Write(inputByteArray,0,inputByteArray.Length);
cs.FlushFinalBlock();

StringBuilderret=newStringBuilder();
foreach(bytebinms.ToArray())
{
ret.AppendFormat("{0:X2}",b);
}
ret.ToString();
returnret.ToString();
}
#endregion
///<summary>
///
///</summary>
///<paramname="pToDecrypt">待解密的字元串</param>
///<paramname="sKey">解密密鑰,要求為8位元組,和加密密鑰相同</param>
///<returns>解密成功返回解密後的字元串，失敗返源串</returns>
#regionDESDeCodeDES解密
publicstaticstringDESDeCode(stringpToDecrypt,stringsKey)
{
//HttpContext.Current.Response.Write(pToDecrypt+"<br>"+sKey);
//HttpContext.Current.Response.End();
DESCryptoServiceProviderdes=newDESCryptoServiceProvider();

byte[]inputByteArray=newbyte[pToDecrypt.Length/2];
for(intx=0;x<pToDecrypt.Length/2;x++)
{
inti=(Convert.ToInt32(pToDecrypt.Substring(x*2,2),16));
inputByteArray[x]=(byte)i;
}

des.Key=ASCIIEncoding.ASCII.GetBytes(sKey);
des.IV=ASCIIEncoding.ASCII.GetBytes(sKey);
MemoryStreamms=newMemoryStream();
CryptoStreamcs=newCryptoStream(ms,des.CreateDecryptor(),CryptoStreamMode.Write);
cs.Write(inputByteArray,0,inputByteArray.Length);
cs.FlushFinalBlock();

StringBuilderret=newStringBuilder();

returnHttpContext.Current.Server.UrlDecode(System.Text.Encoding.Default.GetString(ms.ToArray()));
}
#endregion
}

[php]viewplainprint?
<?php
classDES
{
var$key;
var$iv;//偏移量

functionDES($key,$iv=0){
//key長度8例如:1234abcd
$this->key=$key;
if($iv==0){
$this->iv=$key;//默認以$key作為iv
}else{
$this->iv=$iv;//mcrypt_create_iv(mcrypt_get_block_size(MCRYPT_DES,MCRYPT_MODE_CBC),MCRYPT_DEV_RANDOM);
}
}

functionencrypt($str){
//加密，返回大寫十六進制字元串
$size=mcrypt_get_block_size(MCRYPT_DES,MCRYPT_MODE_CBC);
$str=$this->pkcs5Pad($str,$size);
returnstrtoupper(bin2hex(mcrypt_cbc(MCRYPT_DES,$this->key,$str,MCRYPT_ENCRYPT,$this->iv)));
}

functiondecrypt($str){
//解密
$strBin=$this->hex2bin(strtolower($str));
$str=mcrypt_cbc(MCRYPT_DES,$this->key,$strBin,MCRYPT_DECRYPT,$this->iv);
$str=$this->pkcs5Unpad($str);
return$str;
}

functionhex2bin($hexData){
$binData="";
for($i=0;$i<strlen($hexData);$i+=2){
$binData.=chr(hexdec(substr($hexData,$i,2)));
}
return$binData;
}

functionpkcs5Pad($text,$blocksize){
$pad=$blocksize-(strlen($text)%$blocksize);
return$text.str_repeat(chr($pad),$pad);
}

functionpkcs5Unpad($text){
$pad=ord($text{strlen($text)-1});
if($pad>strlen($text))
returnfalse;
if(strspn($text,chr($pad),strlen($text)-$pad)!=$pad)
returnfalse;
returnsubstr($text,0,-1*$pad);
}

}
?>

❺ php 怎麼用zend加密

可以加密就可以解密。

解密ZEND加密後的PHP文件：

zend加密php文件解密工具Dezender可以做到。

1、下載Dezender.zip

2、解壓到盤裡面，最好不要有中文路徑，比如解壓到 I:Dezender 裡面，修改I:DezenderPHP5PHP5php.ini文件，修改裡面的文件路徑。

❻ java的 DES 加密解密方法 求對應php的加密解密方法!!!!急切

DES是一種標準的數據加密演算法，關於這個演算法的詳細介紹可以參考wiki和網路：

php中有一個擴展可以支持DES的加密演算法，是：extension=php_mcrypt.dll

在配置文件中將這個擴展打開還不能夠在windows環境下使用

需要將PHP文件夾下的 libmcrypt.dll 拷貝到系統的 system32 目錄下，這是通過phpinfo可以查看到mcrypt表示這個模塊可以正常試用了。

下面是PHP中使用DES加密解密的一個例子：

//$input-stufftodecrypt
//$key-thesecretkeytouse

functiondo_mencrypt($input,$key)
{
$input=str_replace(""n","",$input);
$input=str_replace(""t","",$input);
$input=str_replace(""r","",$input);
$key=substr(md5($key),0,24);
$td=mcrypt_mole_open('tripledes','','ecb','');
$iv=mcrypt_create_iv(mcrypt_enc_get_iv_size($td),MCRYPT_RAND);
mcrypt_generic_init($td,$key,$iv);
$encrypted_data=mcrypt_generic($td,$input);
mcrypt_generic_deinit($td);
mcrypt_mole_close($td);
returntrim(chop(base64_encode($encrypted_data)));
}
//$input-stufftodecrypt
//$key-thesecretkeytouse

functiondo_mdecrypt($input,$key)
{
$input=str_replace(""n","",$input);
$input=str_replace(""t","",$input);
$input=str_replace(""r","",$input);
$input=trim(chop(base64_decode($input)));
$td=mcrypt_mole_open('tripledes','','ecb','');
$key=substr(md5($key),0,24);
$iv=mcrypt_create_iv(mcrypt_enc_get_iv_size($td),MCRYPT_RAND);
mcrypt_generic_init($td,$key,$iv);
$decrypted_data=mdecrypt_generic($td,$input);
mcrypt_generic_deinit($td);
mcrypt_mole_close($td);
returntrim(chop($decrypted_data));
}

參考自：http://www.cnblogs.com/cocowool/archive/2009/01/07/1371309.html

❼ php如何對文件進行RC4加密

1.原始鑰匙 key
2.md5(md5+常量) 加密原始key => mkey
3.mkey 作為AC4的密匙 ac_mkey
4.ac_mkey 對加密數據 進行 AC4 加密 得到AC4密碼
5.AC4密碼 在進行一次 AC4加密可還原 加密數據
簡單來說,一句話,用md5 做AC4的密匙
以下是代碼
<?php
/*
* rc4加密演算法
* $pwd 密鑰
* $data 要加密的數據
*/
function rc4 ($pwd, $data)//$pwd密鑰 $data需加密字元串
{
$key[] ="";
$box[] ="";

$pwd_length = strlen($pwd);
$data_length = strlen($data);

for ($i = 0; $i < 256; $i++)
{
$key[$i] = ord($pwd[$i % $pwd_length]);
$box[$i] = $i;
}

for ($j = $i = 0; $i < 256; $i++)
{
$j = ($j + $box[$i] + $key[$i]) % 256;
$tmp = $box[$i];
$box[$i] = $box[$j];
$box[$j] = $tmp;
}

for ($a = $j = $i = 0; $i < $data_length; $i++)
{
$a = ($a + 1) % 256;
$j = ($j + $box[$a]) % 256;

$tmp = $box[$a];
$box[$a] = $box[$j];
$box[$j] = $tmp;

$k = $box[(($box[$a] + $box[$j]) % 256)];
$cipher .= chr(ord($data[$i]) ^ $k);
}

return $cipher;
}

$key = '5201314'; //原始KEY
$pwd = md5(md5($key).'我是常量'); //md5+常量
$data = '我愛北京天安門'; //要加密的數據
$cipher = rc4($pwd, $data); //AC4 加密演算法
$c = rc4($pwd, $cipher); //AC4 加密演算法還原 (還原只需要重新加密一次)
echo '<pre>';
var_mp($key);
var_mp($pwd);
var_mp($data);
var_mp($cipher);
var_mp($c);
?>

❽ php aes加密～呢

AES加密演算法

密碼學中的高級加密標准（AdvancedEncryptionStandard，AES），又稱Rijndael加密法，是美國聯邦政府採用的一種區塊加密標准。這個標准用來替代原先的DES，已經被多方分析且廣為全世界所使用。

<?php

classCryptAES

{

protected$cipher=MCRYPT_RIJNDAEL_128;

protected$mode=MCRYPT_MODE_ECB;

protected$pad_method=NULL;

protected$secret_key='';

protected$iv='';

publicfunctionset_cipher($cipher)

{

$this->cipher=$cipher;

}

publicfunctionset_mode($mode)

{

$this->mode=$mode;

}

publicfunctionset_iv($iv)

{

$this->iv=$iv;

}

publicfunctionset_key($key)

{

$this->secret_key=$key;

}

publicfunctionrequire_pkcs5()

{

$this->pad_method='pkcs5';

}

protectedfunctionpad_or_unpad($str,$ext)

{

if(is_null($this->pad_method))

{

return$str;

}

else

{

$func_name=__CLASS__.'::'.$this->pad_method.'_'.$ext.'pad';

if(is_callable($func_name))

{

$size=mcrypt_get_block_size($this->cipher,$this->mode);

returncall_user_func($func_name,$str,$size);

}

}

return$str;

}

protectedfunctionpad($str)

{

return$this->pad_or_unpad($str,'');

}

protectedfunctionunpad($str)

{

return$this->pad_or_unpad($str,'un');

}

publicfunctionencrypt($str)

{

$str=$this->pad($str);

$td=mcrypt_mole_open($this->cipher,'',$this->mode,'');

if(empty($this->iv))

{

$iv=@mcrypt_create_iv(mcrypt_enc_get_iv_size($td),MCRYPT_RAND);

}

else

{

$iv=$this->iv;

}

mcrypt_generic_init($td,hex2bin($this->secret_key),$iv);

$cyper_text=mcrypt_generic($td,$str);

$rt=strtoupper(bin2hex($cyper_text));

mcrypt_generic_deinit($td);

mcrypt_mole_close($td);

return$rt;

}

publicfunctiondecrypt($str){

$td=mcrypt_mole_open($this->cipher,'',$this->mode,'');

if(empty($this->iv))

{

$iv=@mcrypt_create_iv(mcrypt_enc_get_iv_size($td),MCRYPT_RAND);

}

else

{

$iv=$this->iv;

}

mcrypt_generic_init($td,$this->secret_key,$iv);

//$decrypted_text=mdecrypt_generic($td,self::hex2bin($str));

$decrypted_text=mdecrypt_generic($td,base64_decode($str));

$rt=$decrypted_text;

mcrypt_generic_deinit($td);

mcrypt_mole_close($td);

return$this->unpad($rt);

}

publicstaticfunctionhex2bin($hexdata){

$bindata='';

$length=strlen($hexdata);

for($i=0;$i<$length;$i+=2)

{

$bindata.=chr(hexdec(substr($hexdata,$i,2)));

}

return$bindata;

}

publicstaticfunctionpkcs5_pad($text,$blocksize)

{

$pad=$blocksize-(strlen($text)%$blocksize);

return$text.str_repeat(chr($pad),$pad);

}

publicstaticfunctionpkcs5_unpad($text)

{

$pad=ord($text{strlen($text)-1});

if($pad>strlen($text))returnfalse;

if(strspn($text,chr($pad),strlen($text)-$pad)!=$pad)returnfalse;

returnsubstr($text,0,-1*$pad);

}

}

//密鑰

$keyStr='';

//加密的字元串

$plainText='test';

$aes=newCryptAES();

$aes->set_key($keyStr);

$aes->require_pkcs5();

$encText=$aes->encrypt($plainText);

echo$encText;

?>

❾ php怎麼實現加密簡單的那種 而且用的時候不需要解密

將整個代碼進行加密這個玩意估計還沒人想過
因為需要將代碼本身保密化的只有一些需要在本地運行的軟體。想php這樣運行在伺服器端的，除非人家黑了你的伺服器將代碼直接考出來或者你講代碼交給了客戶，否則不會有人能看到你的源代碼的。
樓主這個問題我也想過，我是怕給客戶做完以後，人家拿走用去了，不給錢。
大多數人都會給自己的網站流一個「後門」，這個後門只有網站開發者自己知道，必要的時候通過後門進入，強制關閉網站就可以了。
以前我還干過一件蛋疼的事，就是用java的class和C的dll，利用這兩種文件的不可逆編譯性。將一些核心的加密和解密演算法，用java寫好後，編譯成class文件或者用C寫好，編譯成dll文件，然後讓php調用。但是弄起來很蛋疼，尤其是class，需要一個什麼javaBridge的東西。但是目前各種逆編譯手段的完善，最快被幹掉的就是class。似乎現在部分dll文件都被幹掉了。

❿ 80分求DES加密解密演算法實現的PHP源代碼

以下演算法根據js演算法移植：

<?php

function des ($key, $message, $encrypt, $mode, $iv, $padding) {
$message0 = $message;
//declaring this locally speeds things up a bit
$spfunction1 = array (0x1010400,0,0x10000,0x1010404,0x1010004,0x10404,0x4,0x10000,0x400,0x1010400,0x1010404,0x400,0x1000404,0x1010004,0x1000000,0x4,0x404,0x1000400,0x1000400,0x10400,0x10400,0x1010000,0x1010000,0x1000404,0x10004,0x1000004,0x1000004,0x10004,0,0x404,0x10404,0x1000000,0x10000,0x1010404,0x4,0x1010000,0x1010400,0x1000000,0x1000000,0x400,0x1010004,0x10000,0x10400,0x1000004,0x400,0x4,0x1000404,0x10404,0x1010404,0x10004,0x1010000,0x1000404,0x1000004,0x404,0x10404,0x1010400,0x404,0x1000400,0x1000400,0,0x10004,0x10400,0,0x1010004);
$spfunction2 = array (-0x7fef7fe0,-0x7fff8000,0x8000,0x108020,0x100000,0x20,-0x7fefffe0,-0x7fff7fe0,-0x7fffffe0,-0x7fef7fe0,-0x7fef8000,-0x80000000,-0x7fff8000,0x100000,0x20,-0x7fefffe0,0x108000,0x100020,-0x7fff7fe0,0,-0x80000000,0x8000,0x108020,-0x7ff00000,0x100020,-0x7fffffe0,0,0x108000,0x8020,-0x7fef8000,-0x7ff00000,0x8020,0,0x108020,-0x7fefffe0,0x100000,-0x7fff7fe0,-0x7ff00000,-0x7fef8000,0x8000,-0x7ff00000,-0x7fff8000,0x20,-0x7fef7fe0,0x108020,0x20,0x8000,-0x80000000,0x8020,-0x7fef8000,0x100000,-0x7fffffe0,0x100020,-0x7fff7fe0,-0x7fffffe0,0x100020,0x108000,0,-0x7fff8000,0x8020,-0x80000000,-0x7fefffe0,-0x7fef7fe0,0x108000);
$spfunction3 = array (0x208,0x8020200,0,0x8020008,0x8000200,0,0x20208,0x8000200,0x20008,0x8000008,0x8000008,0x20000,0x8020208,0x20008,0x8020000,0x208,0x8000000,0x8,0x8020200,0x200,0x20200,0x8020000,0x8020008,0x20208,0x8000208,0x20200,0x20000,0x8000208,0x8,0x8020208,0x200,0x8000000,0x8020200,0x8000000,0x20008,0x208,0x20000,0x8020200,0x8000200,0,0x200,0x20008,0x8020208,0x8000200,0x8000008,0x200,0,0x8020008,0x8000208,0x20000,0x8000000,0x8020208,0x8,0x20208,0x20200,0x8000008,0x8020000,0x8000208,0x208,0x8020000,0x20208,0x8,0x8020008,0x20200);
$spfunction4 = array (0x802001,0x2081,0x2081,0x80,0x802080,0x800081,0x800001,0x2001,0,0x802000,0x802000,0x802081,0x81,0,0x800080,0x800001,0x1,0x2000,0x800000,0x802001,0x80,0x800000,0x2001,0x2080,0x800081,0x1,0x2080,0x800080,0x2000,0x802080,0x802081,0x81,0x800080,0x800001,0x802000,0x802081,0x81,0,0,0x802000,0x2080,0x800080,0x800081,0x1,0x802001,0x2081,0x2081,0x80,0x802081,0x81,0x1,0x2000,0x800001,0x2001,0x802080,0x800081,0x2001,0x2080,0x800000,0x802001,0x80,0x800000,0x2000,0x802080);
$spfunction5 = array (0x100,0x2080100,0x2080000,0x42000100,0x80000,0x100,0x40000000,0x2080000,0x40080100,0x80000,0x2000100,0x40080100,0x42000100,0x42080000,0x80100,0x40000000,0x2000000,0x40080000,0x40080000,0,0x40000100,0x42080100,0x42080100,0x2000100,0x42080000,0x40000100,0,0x42000000,0x2080100,0x2000000,0x42000000,0x80100,0x80000,0x42000100,0x100,0x2000000,0x40000000,0x2080000,0x42000100,0x40080100,0x2000100,0x40000000,0x42080000,0x2080100,0x40080100,0x100,0x2000000,0x42080000,0x42080100,0x80100,0x42000000,0x42080100,0x2080000,0,0x40080000,0x42000000,0x80100,0x2000100,0x40000100,0x80000,0,0x40080000,0x2080100,0x40000100);
$spfunction6 = array (0x20000010,0x20400000,0x4000,0x20404010,0x20400000,0x10,0x20404010,0x400000,0x20004000,0x404010,0x400000,0x20000010,0x400010,0x20004000,0x20000000,0x4010,0,0x400010,0x20004010,0x4000,0x404000,0x20004010,0x10,0x20400010,0x20400010,0,0x404010,0x20404000,0x4010,0x404000,0x20404000,0x20000000,0x20004000,0x10,0x20400010,0x404000,0x20404010,0x400000,0x4010,0x20000010,0x400000,0x20004000,0x20000000,0x4010,0x20000010,0x20404010,0x404000,0x20400000,0x404010,0x20404000,0,0x20400010,0x10,0x4000,0x20400000,0x404010,0x4000,0x400010,0x20004010,0,0x20404000,0x20000000,0x400010,0x20004010);
$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);
//如果加密，則需要填充
if($encrypt==1){
if($len%8==1){
for($i=0;$i<7;$i++)
$message.=chr(7);
}
if($len%8==2){
for($i=0;$i<6;$i++)
$message.=chr(6);
}
if($len%8==3){
for($i=0;$i<5;$i++)
$message.=chr(5);
}

if($len%8==4){
for($i=0;$i<4;$i++)
$message.=chr(4);
}
if($len%8==5){
for($i=0;$i<3;$i++)
$message.=chr(3);
}
if($len%8==6){
for($i=0;$i<2;$i++)
$message.=chr(2);
}
if($len%8==7){
for($i=0;$i<1;$i++)
$message.=chr(1);
}
if($len%8==0){
for($i=0;$i<8;$i++)
$message.=chr(8);
$len = $len + 8;
}
}
echo "message:".$message;
echo "<br>";
$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));}

echo "3.iterations".$iterations;
echo "<br> 4.looping:";
for($ii = 0; $ii < count($looping); $ii++){
echo ",".$looping[$ii];
}
echo "<br>";

//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 . $temp; if ($temp==8) $len+=8;} //PKCS7 padding
// else if (!$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;
}

echo "mode:".$mode;
echo "<br>";
echo "5.cbcleft:".$cbcleft;
echo "<br>";
echo "6.cbcright:".$cbcright;
echo "<br>";

//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

//des_createKeys
//this takes as input a 64 bit key (even though only 56 bits are used)
//as an array of 2 integers, and returns 16 48 bit keys
function des_createKeys ($key) {
//declaring this locally speeds things up a bit
$pc2bytes0 = array (0,0x4,0x20000000,0x20000004,0x10000,0x10004,0x20010000,0x20010004,0x200,0x204,0x20000200,0x20000204,0x10200,0x10204,0x20010200,0x20010204);
$pc2bytes1 = array (0,0x1,0x100000,0x100001,0x4000000,0x4000001,0x4100000,0x4100001,0x100,0x101,0x100100,0x100101,0x4000100,0x4000101,0x4100100,0x4100101);
$pc2bytes2 = array (0,0x8,0x800,0x808,0x1000000,0x1000008,0x1000800,0x1000808,0,0x8,0x800,0x808,0x1000000,0x1000008,0x1000800,0x1000808);
$pc2bytes3 = array (0,0x200000,0x8000000,0x8200000,0x2000,0x202000,0x8002000,0x8202000,0x20000,0x220000,0x8020000,0x8220000,0x22000,0x222000,0x8022000,0x8222000);
$pc2bytes4 = array (0,0x40000,0x10,0x40010,0,0x40000,0x10,0x40010,0x1000,0x41000,0x1010,0x41010,0x1000,0x41000,0x1010,0x41010);
$pc2bytes5 = array (0,0x400,0x20,0x420,0,0x400,0x20,0x420,0x2000000,0x2000400,0x2000020,0x2000420,0x2000000,0x2000400,0x2000020,0x2000420);
$pc2bytes6 = array (0,0x10000000,0x80000,0x10080000,0x2,0x10000002,0x80002,0x10080002,0,0x10000000,0x80000,0x10080000,0x2,0x10000002,0x80002,0x10080002);
$pc2bytes7 = array (0,0x10000,0x800,0x10800,0x20000000,0x20010000,0x20000800,0x20010800,0x20000,0x30000,0x20800,0x30800,0x20020000,0x20030000,0x20020800,0x20030800);
$pc2bytes8 = array (0,0x40000,0,0x40000,0x2,0x40002,0x2,0x40002,0x2000000,0x2040000,0x2000000,0x2040000,0x2000002,0x2040002,0x2000002,0x2040002);
$pc2bytes9 = array (0,0x10000000,0x8,0x10000008,0,0x10000000,0x8,0x10000008,0x400,0x10000400,0x408,0x10000408,0x400,0x10000400,0x408,0x10000408);
$pc2bytes10 = array (0,0x20,0,0x20,0x100000,0x100020,0x100000,0x100020,0x2000,0x2020,0x2000,0x2020,0x102000,0x102020,0x102000,0x102020);
$pc2bytes11 = array (0,0x1000000,0x200,0x1000200,0x200000,0x1200000,0x200200,0x1200200,0x4000000,0x5000000,0x4000200,0x5000200,0x4200000,0x5200000,0x4200200,0x5200200);
$pc2bytes12 = array (0,0x1000,0x8000000,0x8001000,0x80000,0x81000,0x8080000,0x8081000,0x10,0x1010,0x8000010,0x8001010,0x80010,0x81010,0x8080010,0x8081010);
$pc2bytes13 = array (0,0x4,0x100,0x104,0,0x4,0x100,0x104,0x1,0x5,0x101,0x105,0x1,0x5,0x101,0x105);
$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);

//how many iterations (1 for des, 3 for triple des)
// $iterations = ((strlen($key) > 8) ? 3 : 1); //changed by Paul 16/6/2007 to use Triple DES for 9+ byte keys
$iterations = ((strlen($key) > 24) ? 3 : 1); //changed by Paul 16/6/2007 to use Triple DES for 9+ byte keys
//stores the return keys
$keys = array (); // size = 32 * iterations but you don't specify this in php
//now define the left shifts which need to be done
$shifts = array (0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0);
//other variables
$m=0;
$n=0;

for ($j=0; $j<$iterations; $j++) { //either 1 or 3 iterations
$left = (ord($key{$m++}) << 24) | (ord($key{$m++}) << 16) | (ord($key{$m++}) << 8) | ord($key{$m++});
$right = (ord($key{$m++}) << 24) | (ord($key{$m++}) << 16) | (ord($key{$m++}) << 8) | ord($key{$m++});

$temp = (($left >> 4 & $masks[4]) ^ $right) & 0x0f0f0f0f; $right ^= $temp; $left ^= ($temp << 4);
$temp = (($right >> 16 & $masks[16]) ^ $left) & 0x0000ffff; $left ^= $temp; $right ^= ($temp << 16);
$temp = (($left >> 2 & $masks[2]) ^ $right) & 0x33333333; $right ^= $temp; $left ^= ($temp << 2);
$temp = (($right >> 16 & $masks[16]) ^ $left) & 0x0000ffff; $left ^= $temp; $right ^= ($temp << 16);
$temp = (($left >> 1 & $masks[1]) ^ $right) & 0x55555555; $right ^= $temp; $left ^= ($temp << 1);
$temp = (($right >> 8 & $masks[8]) ^ $left) & 0x00ff00ff; $left ^= $temp; $right ^= ($temp << 8);
$temp = (($left >> 1 & $masks[1]) ^ $right) & 0x55555555; $right ^= $temp; $left ^= ($temp << 1);

//the right side needs to be shifted and to get the last four bits of the left side
$temp = ($left << 8) | (($right >> 20 & $masks[20]) & 0x000000f0);
//left needs to be put upside down
$left = ($right << 24) | (($right << 8) & 0xff0000) | (($right >> 8 & $masks[8]) & 0xff00) | (($right >> 24 & $masks[24]) & 0xf0);
$right = $temp;

//now go through and perform these shifts on the left and right keys
for ($i=0; $i < count($shifts); $i++) {
//shift the keys either one or two bits to the left
if ($shifts[$i] > 0) {
$left = (($left << 2) | ($left >> 26 & $masks[26]));
$right = (($right << 2) | ($right >> 26 & $masks[26]));
} else {
$left = (($left << 1) | ($left >> 27 & $masks[27]));
$right = (($right << 1) | ($right >> 27 & $masks[27]));
}
$left = $left & -0xf;
$right = $right & -0xf;

//now apply PC-2, in such a way that E is easier when encrypting or decrypting
//this conversion will look like PC-2 except only the last 6 bits of each byte are used
//rather than 48 consecutive bits and the order of lines will be according to
//how the S selection functions will be applied: S2, S4, S6, S8, S1, S3, S5, S7
$lefttemp = $pc2bytes0[$left >> 28 & $masks[28]] | $pc2bytes1[($left >> 24 & $masks[24]) & 0xf]
| $pc2bytes2[($left >> 20 & $masks[20]) & 0xf] | $pc2bytes3[($left >> 16 & $masks[16]) & 0xf]
| $pc2bytes4[($left >> 12 & $masks[12]) & 0xf] | $pc2bytes5[($left >> 8 & $masks[8]) & 0xf]
| $pc2bytes6[($left >> 4 & $masks[4]) & 0xf];
$righttemp = $pc2bytes7[$right >> 28 & $masks[28]] | $pc2bytes8[($right >> 24 & $masks[24]) & 0xf]
| $pc2bytes9[($right >> 20 & $masks[20]) & 0xf] | $pc2bytes10[($right >> 16 & $masks[16]) & 0xf]
| $pc2bytes11[($right >> 12 & $masks[12]) & 0xf] | $pc2bytes12[($right >> 8 & $masks[8]) & 0xf]
| $pc2bytes13[($right >> 4 & $masks[4]) & 0xf];
$temp = (($righttemp >> 16 & $masks[16]) ^ $lefttemp) & 0x0000ffff;
$keys[$n++] = $lefttemp ^ $temp; $keys[$n++] = $righttemp ^ ($temp << 16);
}
} //for each iterations
//return the keys we've created
for($ii = 0; $ii < count($keys); $ii++){
echo ",".$keys[$ii];
}
echo "<br>";
return $keys;
} //end of des_createKeys

////////////////////////////// TEST //////////////////////////////
function stringToHex ($s) {
$r = "0x";
$hexes = array ("0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f");
for ($i=0; $i<strlen($s); $i++) {$r .= ($hexes [(ord($s{$i}) >> 4)] . $hexes [(ord($s{$i}) & 0xf)]);}
return $r;
}

function hexToString ($h) {
$r = "";
for ($i= (substr($h, 0, 2)=="0x")?2:0; $i<strlen($h); $i+=2) {$r .= chr (base_convert (substr ($h, $i, 2), 16, 10));}
return $r;
}

function idtag_des_encode($text)
{

$key = '12345678';
$y=pkcs5_pad($text);

echo "y:".$y;
echo "<br />";

$td = mcrypt_mole_open(MCRYPT_DES,'',MCRYPT_MODE_CBC,''); //使用MCRYPT_DES演算法,cbc模式
$iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
$ks = mcrypt_enc_get_key_size($td);
mcrypt_generic_init($td, $key, $key); //初始處理

$encrypted = mcrypt_generic($td, $y); //解密

mcrypt_generic_deinit($td); //結束
mcrypt_mole_close($td);

return $encrypted;
// return base64_encode($encrypted);
}

function pkcs5_pad($text,$block=8)
{
$pad = $block - (strlen($text) % $block);
return $text . str_repeat(chr($pad), $pad);
}

$key = "12345678";
$message = "str4";
$ciphertext = des ($key, $message, 1, 1, $key,null);

//echo "stringToHex (ciphertext): " . stringToHex ($ciphertext);
//echo "<br />";
echo "base64_encode(ciphertext): " . base64_encode($ciphertext);
//echo "<br />";
//echo "encode64(ciphertext): " . encode64($ciphertext);
//echo "<br />";
//echo "base64_encode(stringToHex (ciphertext)): " . base64_encode(stringToHex ($ciphertext));
//echo "<br />";
//echo "stringToHex (base64_encode(ciphertext)): " . stringToHex (idtag_des_encode($message));
echo "<br />";
echo "idtag_des_encode: " .base64_encode(idtag_des_encode($message));
//$recovered_message = des ($key, $ciphertext, 0, 0, null,null);
//echo "\n";
//echo "DES Test Decrypted: " . $recovered_message;

?>