各種加密解密函數（URL加密解密、sha1加密解密、des加密解密）

各種加密解密函數（URL加密解密、sha1加密解密、des加密解密）

普通hash函數如md5、sha1、base64等都是不可逆函數。雖然我們利用PHP可以利用這些函數寫出可逆函數來。但是跨語言時這類可逆函數非常難搞定。所以這時儘量使用AES DES RC4 Rabbit TripleDes這些方法。

包含超時的加密解密函數

[php] view plaincopyprint?在CODE上查看代碼片派生到我的代碼片
 /** 
    * 加密 
    * @param string $string     要加密或解密的字符串 
    * @param string $operation 加密 ''  解密 DECODE 
    * @param string $key        密鑰，加密解密時保持一致 
    * @param int    $expiry 有效時長，單位：秒 
    * @return string 
    */  
    function encrypt_code($string, $expiry = 0, $key = 'abc12345') {  
    $ckey_length = 7;  
    $key = md5($key ? $key : UC_KEY); //加密解密時這個是不變的  
    $keya = md5(substr($key, 0, 16)); //加密解密時這個是不變的  
    $keyb = md5(substr($key, 16, 16)); //加密解密時這個是不變的  
    $keyc = $ckey_length ?  substr(md5(microtime()), -$ckey_length) : '';  
    $cryptkey = $keya . md5($keya . $keyc); //64  
    $key_length = strlen($cryptkey); //64  

    $string =sprintf('%010d', $expiry ? $expiry + time() : 0) . substr(md5($string . $keyb), 0, 16) . $string;  
    $string_length = strlen($string);  

    $result = '';  
    $box = range(0, 255);  

    $rndkey = array();  
    for ($i = 0; $i <= 255; $i++) { //字母表 64位後重復 數列 範圍爲48~122  
        $rndkey[$i] = ord($cryptkey[$i % $key_length]);  
    }  

    for ($j = $i = 0; $i < 256; $i++) { //這裏是一個打亂算法  
        $j = ($j + $box[$i] + $rndkey[$i]) % 256;  
        $tmp = $box[$i];  
        $box[$i] = $box[$j];  
        $box[$j] = $tmp;  
    }  
    for ($a = $j = $i = 0; $i < $string_length; $i++) {  
        $result .= chr(ord($string[$i]) ^ ($box[$i]));  

    }  
     $str =  $keyc . str_replace('=', '', urlsafe_b64encode($result));    
                //  $str =htmlentities($str, ENT_QUOTES, "UTF-8"); // curl 訪問出錯  
                  return $str ;  
}  


   /** 
    * 解密 
    * @param string $string     要加密或解密的字符串 
    * @param string $operation 加密 ''  解密 DECODE 
    * @param string $key        密鑰，加密解密時保持一致 
    * @param int    $expiry 有效時長，單位：秒 
    * @return string 
    */  
     function encrypt_decode($string, $expiry = 0,$key = 'abc12345') {    
                            //  $string = html_entity_decode($string, ENT_QUOTES, "UTF-8") ; //curl 訪問出錯  
    $ckey_length = 7;  
    $key = md5($key ? $key : UC_KEY); //加密解密時這個是不變的  
    $keya = md5(substr($key, 0, 16)); //加密解密時這個是不變的  
    $keyb = md5(substr($key, 16, 16)); //加密解密時這個是不變的  

    $keyc = $ckey_length ?  substr($string, 0, $ckey_length)   : '';  

    $cryptkey = $keya . md5($keya . $keyc); //64  
    $key_length = strlen($cryptkey); //64  
    $string = urlsafe_b64decode(substr($string, $ckey_length)) ;  
               $string_length = strlen($string);  
    $result = '';  
    $box = range(0, 255);  

    $rndkey = array();  
    for ($i = 0; $i <= 255; $i++) { //字母表 64位後重復 數列 範圍爲48~122  
        $rndkey[$i] = ord($cryptkey[$i % $key_length]);  
    }  
    for ($j = $i = 0; $i < 256; $i++) { //這裏是一個打亂算法  
        $j = ($j + $box[$i] + $rndkey[$i]) % 256;  

        $tmp = $box[$i];  
        $box[$i] = $box[$j];  
        $box[$j] = $tmp;  
    }  
    for ($a = $j = $i = 0; $i < $string_length; $i++) {  
        $result .= chr(ord($string[$i]) ^ ($box[$i]));  
    }  
          if ((substr($result, 0, 10) == 0 || substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26) . $keyb), 0, 16)) {  
                       return substr($result, 26);  
               } else {  
                       return false;  
               }  

}  

最簡單的往往是最好用的。
URL加密解密函數

[php] view plaincopyprint?在CODE上查看代碼片派生到我的代碼片
//加密函數  
function lock_url($txt,$key='www.zhuoyuexiazai.com'){  
    $chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-=+";  
    $nh = rand(0,64);  
    $ch = $chars[$nh];  
    $mdKey = md5($key.$ch);  
    $mdKey = substr($mdKey,$nh%8, $nh%8+7);  
    $txt = base64_encode($txt);  
    $tmp = '';  
    $i=0;$j=0;$k = 0;  
    for ($i=0; $i<strlen($txt); $i++) {  
        $k = $k == strlen($mdKey) ? 0 : $k;  
        $j = ($nh+strpos($chars,$txt[$i])+ord($mdKey[$k++]))%64;  
        $tmp .= $chars[$j];  
    }  
    return urlencode($ch.$tmp);  
}  
//解密函數  
function unlock_url($txt,$key='www.zhuoyuexiazai.com'){  
    $txt = urldecode($txt);  
    $chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-=+";  
    $ch = $txt[0];  
    $nh = strpos($chars,$ch);  
    $mdKey = md5($key.$ch);  
    $mdKey = substr($mdKey,$nh%8, $nh%8+7);  
    $txt = substr($txt,1);  
    $tmp = '';  
    $i=0;$j=0; $k = 0;  
    for ($i=0; $i<strlen($txt); $i++) {  
        $k = $k == strlen($mdKey) ? 0 : $k;  
        $j = strpos($chars,$txt[$i])-$nh - ord($mdKey[$k++]);  
        while ($j<0) $j+=64;  
        $tmp .= $chars[$j];  
    }  
    return base64_decode($tmp);  
}  

用戶密碼可逆加密解密函數：

[php] view plaincopyprint?在CODE上查看代碼片派生到我的代碼片
<?php  
function passport_encrypt($txt, $key = 'www.zhuoyuexiazai.com') {   
    srand((double)microtime() * 1000000);   
    $encrypt_key = md5(rand(0, 32000));   
    $ctr = 0;   
    $tmp = '';   
    for($i = 0;$i < strlen($txt); $i++) {   
    $ctr = $ctr == strlen($encrypt_key) ? 0 : $ctr;   
    $tmp .= $encrypt_key[$ctr].($txt[$i] ^ $encrypt_key[$ctr++]);   
    }   
    return urlencode(base64_encode(passport_key($tmp, $key)));   
}   

function passport_decrypt($txt, $key = 'www.zhuoyuexiazai.com') {   
    $txt = passport_key(base64_decode(urldecode($txt)), $key);   
    $tmp = '';   
    for($i = 0;$i < strlen($txt); $i++) {   
    $md5 = $txt[$i];   
    $tmp .= $txt[++$i] ^ $md5;   
    }   
    return $tmp;   
}   

function passport_key($txt, $encrypt_key) {   
    $encrypt_key = md5($encrypt_key);   
    $ctr = 0;   
    $tmp = '';   
    for($i = 0; $i < strlen($txt); $i++) {   
    $ctr = $ctr == strlen($encrypt_key) ? 0 : $ctr;   
    $tmp .= $txt[$i] ^ $encrypt_key[$ctr++];   
    }   
    return $tmp;   
}   
?>  

測試方法：

[php] view plaincopyprint?在CODE上查看代碼片派生到我的代碼片
<?php   
$txt = "1";   
$key = "testkey";   
$encrypt = passport_encrypt($txt,$key);   
$decrypt = passport_decrypt($encrypt,$key);   

echo $encrypt."<br>";   
echo $decrypt."<br>";   
?>   

SHA1的可逆加密解密函數：

[php] view plaincopyprint?在CODE上查看代碼片派生到我的代碼片
<?php  
$string = "Helloworld";  
echo $str1 = dencrypt($string, true, "www.miaohr.com");  
echo $str2 = dencrypt($str1, false, "www.miaohr.com");  

function dencrypt($string, $isEncrypt = true, $key = KEY_SPACE) {  
if (!isset($string{0}) || !isset($key{0})) {  
return false;  
}  

$dynKey = $isEncrypt ? hash('sha1', microtime(true)) : substr($string, 0, 40);  
$fixedKey = hash('sha1', $key);  

$dynKeyPart1 = substr($dynKey, 0, 20);  
$dynKeyPart2 = substr($dynKey, 20);  
$fixedKeyPart1 = substr($fixedKey, 0, 20);  
$fixedKeyPart2 = substr($fixedKey, 20);  
$key = hash('sha1', $dynKeyPart1 . $fixedKeyPart1 . $dynKeyPart2 . $fixedKeyPart2);  

$string = $isEncrypt ? $fixedKeyPart1 . $string . $dynKeyPart2 : (isset($string{339}) ? gzuncompress(base64_decode(substr($string, 40))) : base64_decode(substr($string, 40)));  

$n = 0;  
$result = '';  
$len = strlen($string);  

for ($n = 0; $n < $len; $n++) {  
$result .= chr(ord($string{$n}) ^ ord($key{$n % 40}));  
}  
return $isEncrypt ? $dynKey . str_replace('=', '', base64_encode($n > 299 ? gzcompress($result) : $result)) : substr($result, 20, -20);  
}  

?>  

DES的加密解密函數：

[php] view plaincopyprint?在CODE上查看代碼片派生到我的代碼片
<?php  

$input ='http://mlaan2.home.xs4all.nl/ispack/isetup-5.5.3.exe';  
 /** 
*加密函數 
*$input 要被加密的字符串 
*$key 密鑰 
*/  

$key = randomkeys(8);//生成隨機密匙  
function do_mencrypt($input, $key)  
{  
    $input = base64_encode(trim($input));  
    //$key = substr(md5($key), 0, 4);  
    $td = mcrypt_module_open('des', '', '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_module_close($td);  
    return trim(base64_encode($encrypted_data));  
}  
print_r(do_mencrypt($input, $key));  
echo "<br/>";  
/** 
*解密函數 
*$input 要被解密的字符串 
*$key 密鑰 
*/  
$input1 = do_mencrypt($input, $key);  
function do_mdecrypt($input1, $key)  
{  
    $input1 = base64_decode(trim($input1));  
    $td = mcrypt_module_open('des', '', 'ecb', '');  
    //$key = substr(md5($key), 0, 4);  
    $iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND);  
    mcrypt_generic_init($td, $key, $iv);  
    $decrypted_data = mdecrypt_generic($td, $input1);  
    mcrypt_generic_deinit($td);  
    mcrypt_module_close($td);  
    return trim(base64_decode($decrypted_data));  
}  
print_r(do_mdecrypt($input1, $key));  

 #2.rand key: "CWSTOAYD"：生成隨機密匙，統一用字母或者數字，長度爲8.      
function randomkeys($length)  
{  
   $pattern = '1234567890';  
    for($i=0;$i<$length;$i++)  
    {  
        @$key .= $pattern{rand(0,9)};    //生成php隨機數  
    }  
    return $key;  
}  
?> 

如果你感覺這些內容對你有幫助，那就收藏他吧。

ping一下這個域名

ping hack-test.com