Archief - PHP/MYSQL: paswoorden encrypten

<?php
	$password = $_POST['passwd'];
	$password_encrypt = md5($password);
	$username = $_POST['username'];
?>

$data = "INSERT INTO phplogin (user_name, passwd) ";
$data = $data . "    VALUES ";
$data = $data . "        ('$username','$password_encrypt');";

function arc_crypt( $string) 
  { 
  $salt = "monkey";
    //This function will return a encryted string 
    //The $string will be encrypted in combination with the $salt 
    $salt_value = calc_salt( $salt ); 
    $len_string = strlen( $string ); 
    for( $char_count = 0; $char_count < $len_string ; $char_count++ ) 
      $string[ $char_count ] = chr( ord( $string[ $char_count ] ) + $salt_value ); 
    return $string; 
  } 
			function arc_decrypt( $string ) 
  { 
  $salt = "monkey";
    //This function will return a decryted string 
    //The $string will be decrypted in combination with the $salt 
    $salt_value = calc_salt( $salt ); 
    $len_string = strlen( $string ); 
    for( $char_count = 0; $char_count < $len_string ; $char_count++ ) 
      $string[ $char_count ] = chr( ord( $string[ $char_count ] ) - $salt_value ); 
    return $string; 
  } 
  function calc_salt( $salt ) 
  { 
    //Calculate the salt 
    $len_salt = strlen( $salt ); 
    //When true, addstract(??) the ascii value. 
    $min_plus = true; 
    //Set the salt_value 
    $salt_value = 0; 
    for( $char_count = 0; $char_count < $len_salt ; $char_count++ ){ 
      $char_value = ord( $salt[ $char_count ] ); 
      if( $min_plus ) 
      { 
        $salt_value += $char_value; 
        $min_plus   = false; 
      } 
      else 
      { 
        $salt_value = $salt_value - $char_value; 
        $min_plus   = true; 
      } 
    } 
    if( $salt_value < 0 ) 
      $salt_value -= $salt_value * 2; 
    return $salt_value; 
  } 
  ?>