Is there any possibilities to decode md5 using PHP?

$input = "SmackFactory"; $encrypted = encryptIt( $input ); $decrypted = decryptIt( $encrypted ); echo $encrypted .
'' .
$decrypted; function encryptIt( $q ) { $cryptKey = 'qJB0rGtIn5UB1xG03efyCp'; $qEncoded = base64_encode( mcrypt_encrypt( MCRYPT_RIJNDAEL_256, md5( $cryptKey ), $q, MCRYPT_MODE_CBC, md5( md5( $cryptKey ) ) ) ); return( $qEncoded ); } function decryptIt( $q ) { $cryptKey = 'qJB0rGtIn5UB1xG03efyCp'; $qDecoded = rtrim( mcrypt_decrypt( MCRYPT_RIJNDAEL_256, md5( $cryptKey ), base64_decode( $q ), MCRYPT_MODE_CBC, md5( md5( $cryptKey ) ) ), "\0"); return( $qDecoded ); }