<?php

/*
*		smzint/Messages (c) schmamazon.com 2025
*/

include('../Auth/index.php');
include('ready.php');

function grabPublicKey($uid){
  global $dbservername;
  global $dbusername;
  global $dbpassword;
  global $dbname;
  $conn = new mysqli($dbservername, $dbusername, $dbpassword, $dbname);
  if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
  }

  $sql = "SELECT publicKey FROM smz_messages_users WHERE uid='$uid'";
  $result = $conn->query($sql);
  if ($result->num_rows > 0) {
    while($row = $result->fetch_assoc()) {
      return $row["publicKey"];
    }
  } else {
    return false;
  }
  $conn->close();
}

function grabPrivateKey($password){
  global $dbservername;
  global $dbusername;
  global $dbpassword;
  global $dbname;
  global $uid;
  global $upassword_hash;
  if (!password_verify($password, $upassword_hash)){
      echo "Passwortfehler";
      return false;
  }
  $conn = new mysqli($dbservername, $dbusername, $dbpassword, $dbname);
  if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
  }

  $sql = "SELECT privateKey, iv FROM smz_messages_users WHERE uid='$uid'";
  $result = $conn->query($sql);
  if ($result->num_rows > 0) {
    while($row = $result->fetch_assoc()) {
      return openssl_decrypt(base64_decode($row["privateKey"]), 'aes-128-cbc', $password, 0, base64_decode($row["iv"]));
    }
  } else {
    return false;
  }
  $conn->close();
}


 ?>