Online PHP editor | rfc for cOmU1

@ 2015-07-23T02:46:29Z

<?php
/**
* Huawei E303 | E369 | E357 Free Unlocker
* 
**/

class hw {

	public function calculate($imei, $mode){
			$arrayofbytes = array();
			$digesthash = md5($imei.$this->mode($mode));
			$arrayofbytes = $this->bytearray($digesthash);
			return $this->xorbytes($arrayofbytes);
	}
	
	private function mode($arg){
			$this->unlock = "5e8dd316726b0335";
			$this->flash = "97b7bc6be525ab44";

			if($arg == 'unlock'){
				return $this->unlock;
			}
			else{
				return $this->flash;
			}
	}
	
	private function bytearray($hash){
		$splitdigest = substr(chunk_split($hash,2,":"),0,-1);
		$arrdigest = explode(":",$splitdigest);
		return $arrdigest;
	}
	
	private function xorbytes($arr){
		foreach (range(0,3) as $i) {
			$code = dechex(hexdec($arr[$i]) ^ hexdec($arr[4+$i]) ^ hexdec($arr[8+$i])  ^ hexdec($arr[12+$i]));
			if(strlen($code)< 2) {
				$code = "0" . $code;
			}
			$codes = $codes . $code;
		}

		$tmpcdec = hexdec($codes); 
		$tmp1dec = hexdec("1ffffff");
		$tmp2dec = hexdec("2000000");
		$c = $tmpcdec & $tmp1dec;
		$c = $c | $tmp2dec;
		
		return $c;
	}
}


echo "<head><title>Huawei Code Calculator</title></head>
			Huawei E303 | E369 | E357 Code calculator<br><br>";


$imei = htmlspecialchars($_POST['imei']);
$hw = new hw();

if(strlen($imei) == 15){
	$imei = htmlspecialchars($imei);
	echo "Results:<br>";
	echo "Unlock  ". $hw->calculate($imei,"unlock");
	echo "<br>";
	echo "Flash  ".$hw->calculate($imei,"flash");
}
else{
	if($imei < 15 && $imei > 1) {
		echo "Error : Invalid IMEI";
	}
	else {
		echo "Enter imei on box to calculate";
	}
}


echo "<br><br>
			<form method='post' action=''>
			IMEI : <input type='text' name='imei' maxlength='15'><br>
			<input type='submit' value='CALCULATE'>
		</form>";

echo "<hr>";
echo "Credits to Original algo sharer<br>
			Script Kiddie PHP<br>";
?>

Output for git.master, git.master_jit, rfc.property-hooks: <head><title>Huawei Code Calculator</title></head> Huawei E303 | E369 | E357 Code calculator<br><br> Warning: Undefined array key "imei" in /in/cOmU1 on line 58 Deprecated: htmlspecialchars(): Passing null to parameter #1 ($string) of type string is deprecated in /in/cOmU1 on line 58 Enter imei on box to calculate<br><br> <form method='post' action=''> IMEI : <input type='text' name='imei' maxlength='15'><br> <input type='submit' value='CALCULATE'> </form><hr>Credits to Original algo sharer<br> Script Kiddie PHP<br>

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