DavidMellul

class PseudoRandomness

  # This is the constructor used to instantiate a PseudoRandomness object
  def initialize(seed)
    @instance_seed = seed
  end


  def change_seed
    @instance_seed = @instance_seed + 1

DavidMellul

class PseudoRandomness

  # This is the constructor used to instantiate a PseudoRandomness object
  def initialize(seed)
    @instance_seed = seed
  end

  def change_seed
    @instance_seed = @instance_seed + 1
  end

DavidMellul

# First 3 pseudo random numbers
10
12
14

# Second 3 pseudo random numbers
18
20
22

DavidMellul

def generate_random_uid
  # Generate a random value between 0 and 1 000 000
  base_pseudo_random_value = rand(1_000_000)
 
  uid = evil_maths(base_pseudo_random_value)
  return uid
end

if first_launch?
  uid = generate_random_uid()

DavidMellul

# Seed = 10
Kernel.srand 10

DavidMellul

<?php 

/* Database configuration and so on...*/
$todo_list = $database->retrieve_all_todos();

<ul>
foreach($todo_list as $todo) {
  echo "<li> Task number $todo['id'] -> $todo['description'] </li>"; 
}
</ul>

DavidMellul

<?php

$filter = $_GET['filter']; 

echo "<p>Results for $filter</p>";

$filtered_list = $database->search_query($filter);

/* Rendering stuff */

DavidMellul

<?php

// Don't even look at the code. Just remember, the token must be cryptographically secure
// See : https://medium.com/@davidmellul/broken-by-design-2-randomness-d73f0a0536ed
function RandomToken($length = 32){ // Taken from a comment on http://php.net/manual/fr/function.random-bytes.php
    if(!isset($length) || intval($length) <= 8 ){
      $length = 32;
    }
    if (function_exists('random_bytes')) {
        return bin2hex(random_bytes($length));

DavidMellul

<?php

// Requested URL => http://VerySafePlace.io/deleteEverything
$token = $_GET['token'];

if(empty($token))
  showErrorMessage();
else {
  // This will check that the token matches the logged user's one
  if(token_exists_in_database($token)) 

DavidMellul

<?php

$filter = $_GET['filter'];

$filtered_todo_list = $database->query("SELECT * FROM Todos WHERE name LIKE '.$filter."'");

/* Rendering part */
?>