Made things functional, decrypt still doesn't work

submit.php

@@ -1,15 +1,9 @@
 <?php
-  require $root."enc.php";
-  $enc = encrypt($_POST["words"], $current_key);
-  $postID =  bin2hex(openssl_random_pseudo_bytes(7));
+  require "enc.php";
+  $enc = encrypt($_POST["words"], $_POST["key"]);
+  $content = '<iv>'.$enc[1].'</iv>'.'<tag>'.$enc[2].'</tag>'.'<content>'.$enc[0]."</content>";
   
-  $stmt = $conn->prepare("INSERT INTO posts (id, user_id, text, iv, tag) VALUES (:id, :uid, :txt, :iv, :tag)");
-  $stmt->bindParam(":id", $postID);
-  $stmt->bindParam(":uid", $current_userID);
-  $stmt->bindParam(":txt", $enc[0]);
-  $stmt->bindParam(":iv", $enc[1]);
-  $stmt->bindParam(":tag", $enc[2]);
-  $stmt->execute();
-  
-  header("Location: /500/read/?post=".$postID);
+  header('Content-type: text/plain');
+  header('Content-Disposition: attachment; filename="encrypted.txt"');
+  echo $content;
 ?>