注: 暗号化と復号化、php および .net バージョンの実装

php5.x バージョンでは、php 拡張子 php_mcrypt を追加します。

rree

.net バージョン

 1 class STD3Des 2 { 3     private $key = ""; 4     private $iv = ""; 5  6     /** 7     * 构造，传递二个已经进行base64_encode的KEY与IV 8     * 9     * @param string $key10     * @param string $iv11     */12     function __construct ($key, $iv)13     {14         if (empty($key) || empty($iv)) {15             echo 'key and iv is not valid';16             exit();17         }18         $this->key = $key;19         $this->iv = $iv;20     }21 22     /**23     *加密24     * @param <type> $value25     * @return <type>26     */27     public function encrypt ($value)28     {29         $td = mcrypt_module_open(MCRYPT_3DES, '', MCRYPT_MODE_CBC, '');30         $iv = base64_decode($this->iv);31         $value = $this->PaddingPKCS7($value);32         $key = base64_decode($this->key);33         mcrypt_generic_init($td, $key, $iv);34         $ret = base64_encode(mcrypt_generic($td, $value));35         mcrypt_generic_deinit($td);36         mcrypt_module_close($td);37         return $ret;38     }39 40     /**41     *解密42     * @param <type> $value43     * @return <type>44     */45     public function decrypt ($value)46     {47         $td = mcrypt_module_open(MCRYPT_3DES, '', MCRYPT_MODE_CBC, '');48         $iv = base64_decode($this->iv);49         $key = base64_decode($this->key);50         mcrypt_generic_init($td, $key, $iv);51         $ret = trim(mdecrypt_generic($td, base64_decode($value)));52         $ret = $this->UnPaddingPKCS7($ret);53         mcrypt_generic_deinit($td);54         mcrypt_module_close($td);55         return $ret;56     }57 58     private function PaddingPKCS7 ($data)59     {60         $block_size = mcrypt_get_block_size('tripledes', 'cbc');61         $padding_char = $block_size - (strlen($data) % $block_size);62         $data .= str_repeat(chr($padding_char), $padding_char);63         return $data;64     }65 66     private function UnPaddingPKCS7($text)67     {68         $pad = ord($text{strlen($text) - 1});69         if ($pad > strlen($text)) {70             return false;71         }72         if (strspn($text, chr($pad), strlen($text) - $pad) != $pad) {73             return false;74         }75         return substr($text, 0, - 1 * $pad);76     }77 }78 79 80 //使用81 include('STD3Des.class.php');82 $key='abcdefgh';83 $iv='abcdefgh';84 $msg='test string';85 $des=new STD3Des(base64_encode($key),base64_encode($iv));86 $rs1=$des->encrypt($msg);87 echo $rs1.'<br />';88 $rs2=$des->decrypt($rs1);89 echo $rs2;