フラッシュ暗号化PHP復号化

Question

フラッシュでの暗号化については、PHPで簡単に解読できるようにアドバイスしてください。フラッシュ用

Answer 1

あなたはhttp://code.google.com/p/as3crypto/それが

RSA

• をサポートDES
• できAES
• フグ -
• はMD5
• SHA
• X509
• RC4

あなたはmycrypthttp://www.php.net/manual/en/mcrypt.examples.php RSA、DES、AES、Blowfishの、MD5、SHA、X509、RC4上記のすべての暗号化も

のFlashクラスの例

package 
{ 
     import flash.display.Sprite; 
     import flash.utils.ByteArray; 

     import com.hurlant.crypto.symmetric.ICipher; 
     import com.hurlant.crypto.symmetric.IVMode; 
     import com.hurlant.crypto.symmetric.IMode; 
     import com.hurlant.crypto.symmetric.NullPad; 
     import com.hurlant.crypto.symmetric.PKCS5; 
     import com.hurlant.crypto.symmetric.IPad; 
     import com.hurlant.util.Base64; 
     import com.hurlant.util.Hex; 
     import com.hurlant.crypto.Crypto; 

     public class CryptoCode extends Sprite 
     { 
       private var type:String='simple-des-ecb'; 
       private var key:ByteArray; 

       public function CryptoCode() 
       { 
         init(); 
       } 

       private function init():void 
       { 
         key = Hex.toArray(Hex.fromString('TESTTEST'));// can only be 8 characters long 

         trace(encrypt('TEST TEST')); 
         trace(decrypt(encrypt('TEST TEST')); 
       } 

       private function encrypt(txt:String = ''):String 
       { 
         var data:ByteArray = Hex.toArray(Hex.fromString(txt)); 

         var pad:IPad = new PKCS5; 
         var mode:ICipher = Crypto.getCipher(type, key, pad); 
         pad.setBlockSize(mode.getBlockSize()); 
         mode.encrypt(data); 
         return Base64.encodeByteArray(data); 
       } 
       private function decrypt(txt:String = ''):String 
       { 
         var data:ByteArray = Base64.decodeToByteArray(txt); 
         var pad:IPad = new PKCS5; 
         var mode:ICipher = Crypto.getCipher(type, key, pad); 
         pad.setBlockSize(mode.getBlockSize()); 
         mode.decrypt(data); 
         return Hex.toString(Hex.fromArray(data)); 
       } 
     } 

} 

をサポートを使用することができますPHP PHPクラスの例

class Crypt 
{ 
     var $key = NULL; 
     var $iv = NULL; 
     var $iv_size = NULL; 

     function Crypt() 
     { 
       $this->init(); 
     } 

     function init($key = "") 
     { 
       $this->key = ($key != "") ? $key : ""; 

       $this->algorithm = MCRYPT_DES; 
       $this->mode = MCRYPT_MODE_ECB; 

       $this->iv_size = mcrypt_get_iv_size($this->algorithm, $this->mode); 
       $this->iv = mcrypt_create_iv($this->iv_size, MCRYPT_RAND); 
     } 

     function encrypt($data) 
     { 
       $size = mcrypt_get_block_size($this->algorithm, $this->mode); 
       $data = $this->pkcs5_pad($data, $size); 
       return base64_encode(mcrypt_encrypt($this->algorithm, $this->key, $data, $this->mode, $this->iv)); 
     } 

     function decrypt($data) 
     { 
       return $this->pkcs5_unpad(rtrim(mcrypt_decrypt($this->algorithm, $this->key, base64_decode($data), $this->mode, $this->iv))); 
     } 

     function pkcs5_pad($text, $blocksize) 
     { 
       $pad = $blocksize - (strlen($text) % $blocksize); 
       return $text . str_repeat(chr($pad), $pad); 
     } 

     function pkcs5_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); 
     } 
} 

使用フラッシュ

// instance of crypto class 
private var _crypto : CryptoCode; 
public var myLoader : URLLoader; 

// create instance with encryption key 
_crypto = new CryptoCode("PASSWORD"); 

// send crypted string to php script 
var variables : URLVariables = new URLVariables(); 
variables.message = _crypto.encrypt(tosend_in.text); 

// create request with POST method 
var request : URLRequest = new URLRequest("http://www.lecrabe.net/wordpress/demo/crypt/scripts/testcrypto.php"); 
request.method = URLRequestMethod.POST; 
request.data = variables; 

// send request 
myLoader.load(request); 

使用PHP

include_once "lib/cryptlib.php"; 

// init a new instance of Crypto Class 
$crypto = new Crypt; 

// init with the encryption key 
$result = $crypto->init("PASSWORD"); 

// get the POST data 
$messagefromflash = $_POST ["message"]; 

// decrypt data 
$decrypted_messagefromflash = $crypto->decrypt(utf8_decode($messagefromflash));