PHP Reversible encryption algorithm

Code:

1<?PHP2 3 classTest {4 5     Private $authCodeKey= ' KHUVFB9PIJNYCYMGZDZQEKALYG7DH '; 6 7     functionAuthcode ($input,$key) {8 9         #Input must be of even length.Ten         if(strlen($input)% 2) { One             //$input. = ' 0 '; A         } -  -         #The Keys longer than the input would be truncated. the         if(strlen($key) >strlen($input)) { -             $key=substr($key, 0,strlen($input)); -         } -  +         #The Keys shorter than the input would be padded. -         if(strlen($key) <strlen($input)) { +             $key=Str_pad($key,strlen($input), ' 0 ',str_pad_right); A         } at  -         #Now the key and input is the same length. -         #Zero is used to any trailing padding required. -  -         #Simple XOR ' ing, each input byte with each key byte. -         $result= ' '; in          for($i= 0;$i<strlen($input);$i++) { -             $result.=$input{$i} ^$key{$i}; to         } +         return $result; -     } the  *     /** $ * EncryptionPanax Notoginseng      */ -     functionEncrypt$sessionId) { the  +         $hashKey=$this->base64url_encode ($this->authcode ($sessionId,$this-authcodekey)); A         $hashKey=$this->base64url_encode ($sessionId); the         return $hashKey; +     } -  $  $     /** - * Decryption -      */ the     functionDecrypt$hashKey) { - Wuyi         $authCodeKey= ' KHUVFB9PIJNYCYMGZDZQEKALYG7DH '; the         $sessionId=$this->authcode ($this->base64url_decode ($hashKey),$this-authcodekey); -         $sessionId=$this->base64url_decode ($hashKey); Wu         return $sessionId; -     } About  $     //URL transfer requires replacement of some characters -     functionBase64url_encode ($data) { -         return RTrim(STRTR(Base64_encode($data), ' +/', '-_ '), ' = '); -     } A     //URL transfer requires replacement of some characters +     functionBase64url_decode ($data) { the         return Base64_decode(Str_pad(STRTR($data, '-_ ', ' +/'),strlen($data)% 4, ' = ',str_pad_right)); -     } $}

Test code:

1 $uId= ' Gouge ';2 $signKey= ' gouge-test123 ';3 $timestamp= Time();4 5 //values that need to be encrypted are added according to the actual situation6 $signParam=Array($uId,$timestamp,$signKey);7 $sessionId=implode(‘,‘,$signParam);8 9 $e=NewTest ();Ten //Encrypt One $r=$e->encrypt ($sessionId); A //decryption - $t=$e->decrypt ($r); -  the Echo $r; - Echo"<br/>"; - Echo $t;

Output Result:

1, encryption = "Z291z2usmtq5odc5ntmxnixnb3vnzs10zxn0mtiz

2, decryption = "gouge,1498795316,gouge-test123

PHP Reversible encryption algorithm