PHP supports Chinese and English encryption and decryption codes

PHP supports Chinese and English encryption and decryption codes_PHP tutorial

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Release： 2016-07-13 17:10:09

Original

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The PHP encryption class shared in this article is a PHP implementation class file that can support Chinese and English encryption and decryption. Students in need can refer to it, but it is best to set the document encoding to UTF-8. .

Save the following code into the MD5Crypt.class.php file

代码如下

复制代码

class MD5Crypt {
/**
* Enter description here ...
* @param unknown_type $str
* @return string
*/
public final static function mdsha($str) {
$code = substr ( md5 ( $str ), 10 );
$code .= substr ( sha1 ( $str ), 0, 28 );
$code .= substr ( md5 ( $str ), 0, 22 );
$code .= substr ( sha1 ( $str ), 16 ) . md5 ( $str );
return self::chkToken () ? $code : null;
}
/**
* Enter description here ...
* @param unknown_type $param
*/
private final static function chkToken() {
return true;
}
/**
* Enter description here ...
* @param unknown_type $txt
* @param unknown_type $encrypt_key
* @return Ambigous
*/
private final static function keyED($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;
}
/**
* Enter description here ...
* @param unknown_type $txt
* @param unknown_type $key
* @return string
*/
public final static function Encrypt($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 ++;
}
$_code = md5 ( $encrypt_key ) . base64_encode ( self::keyED ( $tmp, $key ) ) . md5 ( $encrypt_key . $key );
return self::chkToken () ? $_code : null;
}
/**
* Enter description here ...
* @param unknown_type $txt
* @param unknown_type $key
* @return Ambigous
*/
public final static function Decrypt($txt, $key) {
$txt = self::keyED ( base64_decode ( substr ( $txt, 32, - 32 ) ), $key );
$tmp = "";
for($i = 0; $i < strlen ( $txt ); $i ++) {
$md5 = substr ( $txt, $i, 1 );
$i ++;
$tmp .= (substr ( $txt, $i, 1 ) ^ $md5);
}
return self::chkToken () ? $tmp : null;
}
/**
* Enter description here ...
* @var unknown_type
*/
private static $_key = 'lau';
}
?>

Usage

代码如下	复制代码
define ( 'WORKSPACE', '.' . DIRECTORY_SEPARATOR ); header ( "Content-Type: text/html; charset=utf-8" ); include_once 'Core/Library/MD5Crypt.class.php'; $a = MD5Crypt::Encrypt ( "A", 100 ); echo "EnCode:" . $a, " "; echo "DeCode:" . MD5Crypt::Decrypt ( $a, 100 ); ?>