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3DES£¨¼´Triple DES£©ÊÇDESÏòAES¹ý¶ÉµÄ¶Ô³ÆÐÔ¼ÓÃÜËã·¨£¬ËüʹÓÃ3Ìõ64λµÄÃÜÔ¿¶ÔÊý¾Ý½øÐÐÈý´Î¼ÓÃÜ¡£ÊÇDESµÄÒ»¸ö¸ü°²È«µÄ±äÐΡ£ËüÒÔDESΪ»ù±¾Ä£¿é£¬Í¨¹ý×éºÏ·Ö×é·½·¨Éè¼Æ³ö·Ö×é¼ÓÃÜËã·¨¡£±ÈÆð×î³õµÄDES£¬3DES¸üΪ°²È«¡£
PHPÀûÓÃÀ©Õ¹¿âMcryptÀ´ÊµÏÖDES¼ÓÃÜ£¬ÕâÖÖ¼ÓÃܵĺô¦Ö÷ÒªÊDz»Í¬µÄÓïÑÔƽ̨Êý¾Ý¿ÉÒÔ½øÐн»»¥¼ÓÃÜ´«Ê䣬·ÀÖ¹Êý¾ÝÍâй£¬ÊµÏÖÕâÖÖ·½Ê½Ë«·½±ØÐ붨ÒåÒ»¸ö¹«ÓõÄKEY£¨ÃÜÔ¿£©
ÏÂÃæÊÇPHPÓëC#µÄ3DESͨÓõļӽâÃÜ´úÂ룺
  <?php
function encrypt($string) {
//¼ÓÃÜÓõÄÃÜÔ¿Îļþ
$key = "a81970b0fa3c9b";

//¼ÓÃÜ·½·¨
$cipher_alg = MCRYPT_TRIPLEDES;
//³õʼ»¯ÏòÁ¿À´Ôö¼Ó°²È«ÐÔ
$iv = mcrypt_create_iv(mcrypt_get_iv_size($cipher_alg,MCRYPT_MODE_ECB), MCRYPT_RAND);

//¿ªÊ¼¼ÓÃÜ
$encrypted_string = mcrypt_encrypt($cipher_alg, $key, $string, MCRYPT_MODE_ECB, $iv);
return base64_encode($encrypted_string);//ת»¯³É16½øÖÆ
// return $encrypted_string;
}

function decrypt($string) {
$string = base64_decode($string);

//½âÃÜÓõÄÃÜÔ¿Îļþ
$key = "8d2e20678";

//½âÃÜ·½·¨
$cipher_alg = MCRYPT_TRIPLEDES;
//³õʼ»¯ÏòÁ¿À´Ôö¼Ó°²È«ÐÔ
$iv = mcrypt_create_iv(mcrypt_get_iv_size($cipher_alg,MCRYPT_MODE_ECB), MCRYPT_RAND);

//¿ªÊ¼½âÃÜ
$decrypted_string = mcrypt_decrypt($cipher_alg, $key, $string, MCRYPT_MODE_ECB, $iv);
return trim($decrypted_string);
}

$ee = encrypt('100');
$dd = decrypt('dQYoiTMha4s=');
echo $ee."<br>".$dd;
?>
  
   //using System;
//using System.Security.Cryptography;
//using System.Text;

/**////
/// Crypto3DES µÄժҪ˵Ã÷¡£
///
/*public class Crypto3DES
{
public Crypto3DES()
{


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