PHP encryption and decryption class example analysis, encryption and decryption example analysis_PHP tutorial

PHP encryption and decryption class example analysis, encryption and decryption example analysis

The examples in this article describe the PHP encryption and decryption class. Share it with everyone for your reference. The specific analysis is as follows:

This code supports array encryption, ciphertext validity period, and various symmetric encryption

The parameters are as follows:

* @use ption::en($string, $key);
* @param String $string The string that needs to be encrypted
* @param String $skey key
* @param int $expiry Ciphertext validity period, valid during encryption, unit is seconds, 0 means permanent validity
* @return String

1. The php code is as follows:

/*
 * -工具库-加密解密码
*/
class ption
{
 private static $original = array('=', '+', '/');
 private static $later = array('O0O0O', 'o0O0o', 'oo00o');
 function __construct()
 {
 }
 private static function md5($skey = '')
 {
  $skey = $skey ? $skey : 'ui' ; //uicms::_config('security/authkey');
  return md5(substr($skey, 0, 16));
 }
 /**
 * @use ption::en($string, $key);
 * @param String $string 需要加密的字串
 * @param String $skey 密钥
 * @param int $expiry 密文有效期, 加密时候有效， 单位 秒，0 为永久有效
 * @return String
 */
 static public function en($string = '', $skey = '', $expiry=0)
 {
  if( is_array( $string ) )
  {
   $string = json_encode($string); // uicms::json($string, true, 'en');
  }
  $string = str_pad($expiry ? $expiry + TIME : 0, 10, 0).$string;
  $strArr = str_split(base64_encode($string));
  $strCount = count($strArr);
  $skey = static::md5($skey);
  foreach (str_split($skey) as $key => $value)
  {
   $key < $strCount && $strArr[$key].=$value;
  }
  return str_replace(self::$original, self::$later, join('', $strArr));
 }
 /**
 * @use ption::de($string, $key);
 * @param String $string 需要解密的字串
 * @param String $skey 密钥
 * @return String
 */
 static public function de($string = '', $skey = '')
 {
  $strArr = str_split(str_replace(self::$later,self::$original,$string),2);
  $strCount = count($strArr);
  $skey = static::md5($skey);
  foreach (str_split($skey) as $key => $value)
  {
   $key < $strCount && $strArr[$key][1] === $value && $strArr[$key] = $strArr[$key][0];
  }
  $result = base64_decode(join('', $strArr));
  if(substr($result, 0, 10) == 0 || substr($result, 0, 10) - TIME > 0)
  {
   return substr($result, 10);
  }
  else
  {
   return false;
  }
 }
}

2. Usage is as follows:

$str['username'] = 'oschina';
$str['pw'] = '123456';
$str['huoxin'] = '!@#$%^&';
echo "string : " . $str . " <br />";
echo "encode : " . ($enstring = ption::en($str)) . '<br />';
echo "decode : " . ption::de($enstring);

I hope this article will be helpful to everyone’s PHP programming design.

http://www.bkjia.com/PHPjc/987248.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/987248.htmlTechArticlePHP encryption and decryption class example analysis, encryption and decryption example analysis This article describes the PHP encryption and decryption class with examples. Share it with everyone for your reference. The specific analysis is as follows: This code supports array addition...