/**

*@param? DES/3DES加密解密

*@param? 如果是3des，將MCRYPT_DES修改為MCRYPT_3DES，個人筆記

*/

class DesCrypt{

var $key?? = 'mykeycode';

var $deviceid?? = '';

var $user?? = '';

var $lsh?? = '';

var $cipherText = '';

var $HcipherText = '';

var $decrypted_data ='';

function DesCrypt(){}

//加密

function en($str) {

$cipher = mcrypt_module_open(MCRYPT_DES, '', MCRYPT_MODE_ECB, '');

$iv???? = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_DES,MCRYPT_MODE_ECB), MCRYPT_RAND);

if (mcrypt_generic_init($cipher, substr($this->key,0,8), $iv) != -1){

$this->cipherText = mcrypt_generic($cipher,$this->pad($str));

mcrypt_generic_deinit($cipher);

// 以十六進制字符顯示加密后的字符

$this->HcipherText=bin2hex($this->cipherText);

//printf("

3DES encrypted:\n%s

",$this->cipherText);

//printf("

3DES HexEncrypted:\n%s

",$this->HcipherText);

}

mcrypt_module_close($cipher);

//return $this->cipherText;

return strtoupper($this->HcipherText);

}

//解密

function de($str)

{

$str??? = pack('H*', $str);

$cipher = mcrypt_module_open(MCRYPT_DES, '', MCRYPT_MODE_ECB, '');

$iv???? = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_DES,MCRYPT_MODE_ECB), MCRYPT_RAND);

if (mcrypt_generic_init($cipher, substr($this->key,0,8), $iv) != -1)

{

$this->decrypted_data = mdecrypt_generic($cipher,$str);

mcrypt_generic_deinit($cipher);

}

mcrypt_module_close($cipher);

return $this->unpad($this->decrypted_data);

}

private function pad ($data)

{

$data = str_replace("\n","",$data);

$data = str_replace("\t","",$data);

$data = str_replace("\r","",$data);

return $data;

}

private function unpad ($text)

{

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

if ($pad > strlen($text)) {

return false;

}

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

return false;

}

return substr($text, 0, - 1 * $pad);

}

};

$str = 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa';

$des = new DesCrypt();

$sDES = $des->en($str);

echo $sDES;

?>

總結

以上是生活随笔為你收集整理的xiaohai.cf index.php,php des 加密 - 北京破小孩的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。