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Long overdue: Salted password hashes

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This commit is contained in:
Michael Foster 2013-07-24 11:15:55 -04:00
parent 46edec0f2d
commit 31f657e550
4 changed files with 63 additions and 23 deletions
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34
inc/mod/auth.php
View file

@ -29,6 +29,11 @@ function mkhash($username, $password, $salt = false) {
return $hash;
}
function generate_salt() {
mt_srand(microtime(true) * 100000 + memory_get_usage(true));
return md5(uniqid(mt_rand(), true));
}
function login($username, $password, $makehash=true) {
global $mod;
@ -37,20 +42,23 @@ function login($username, $password, $makehash=true) {
$password = sha1($password);
}
$query = prepare("SELECT `id`,`type`,`boards` FROM `mods` WHERE `username` = :username AND `password` = :password LIMIT 1");
$query = prepare("SELECT `id`, `type`, `boards`, `password`, `salt` FROM `mods` WHERE `username` = :username");
$query->bindValue(':username', $username);
$query->bindValue(':password', $password);
$query->execute() or error(db_error($query));
if ($user = $query->fetch()) {
return $mod = array(
'id' => $user['id'],
'type' => $user['type'],
'username' => $username,
'hash' => mkhash($username, $password),
'boards' => explode(',', $user['boards'])
);
} else return false;
if ($user = $query->fetch(PDO::FETCH_ASSOC)) {
if ($user['password'] === hash('sha256', $user['salt'] . $password)) {
return $mod = array(
'id' => $user['id'],
'type' => $user['type'],
'username' => $username,
'hash' => mkhash($username, $user['password']),
'boards' => explode(',', $user['boards'])
);
}
}
return false;
}
function setCookies() {
@ -104,10 +112,10 @@ if (isset($_COOKIE[$config['cookies']['mod']])) {
exit;
}
$query = prepare("SELECT `id`, `type`, `boards`, `password` FROM `mods` WHERE `username` = :username LIMIT 1");
$query = prepare("SELECT `id`, `type`, `boards`, `password` FROM `mods` WHERE `username` = :username");
$query->bindValue(':username', $cookie[0]);
$query->execute() or error(db_error($query));
$user = $query->fetch();
$user = $query->fetch(PDO::FETCH_ASSOC);
// validate password hash
if ($cookie[1] !== mkhash($cookie[0], $user['password'], $cookie[2])) {

24
inc/mod/pages.php
View file

@ -1407,9 +1407,13 @@ function mod_user($uid) {
}
if ($_POST['password'] != '') {
$query = prepare('UPDATE `mods` SET `password` = SHA1(:password) WHERE `id` = :id');
$salt = generate_salt();
$password = hash('sha256', $salt . sha1($_POST['password']));
$query = prepare('UPDATE `mods` SET `password` = :password, `salt` = :salt WHERE `id` = :id');
$query->bindValue(':id', $uid);
$query->bindValue(':password', $_POST['password']);
$query->bindValue(':password', $password);
$query->bindValue(':salt', $salt);
$query->execute() or error(db_error($query));
modLog('Changed password for ' . utf8tohtml($_POST['username']) . ' <small>(#' . $user['id'] . ')</small>');
@ -1430,9 +1434,13 @@ function mod_user($uid) {
if (hasPermission($config['mod']['change_password']) && $uid == $mod['id'] && isset($_POST['password'])) {
if ($_POST['password'] != '') {
$query = prepare('UPDATE `mods` SET `password` = SHA1(:password) WHERE `id` = :id');
$salt = generate_salt();
$password = hash('sha256', $salt . sha1($_POST['password']));
$query = prepare('UPDATE `mods` SET `password` = :password, `salt` = :salt WHERE `id` = :id');
$query->bindValue(':id', $uid);
$query->bindValue(':password', $_POST['password']);
$query->bindValue(':password', $password);
$query->bindValue(':salt', $salt);
$query->execute() or error(db_error($query));
modLog('Changed own password');
@ -1494,9 +1502,13 @@ function mod_user_new() {
if ($_POST['type'] !== JANITOR && $_POST['type'] !== MOD && $_POST['type'] !== ADMIN)
error(sprintf($config['error']['invalidfield'], 'type'));
$query = prepare('INSERT INTO `mods` VALUES (NULL, :username, SHA1(:password), :type, :boards)');
$salt = generate_salt();
$password = hash('sha256', $salt . sha1($_POST['password']));
$query = prepare('INSERT INTO `mods` VALUES (NULL, :username, :password, :salt, :type, :boards)');
$query->bindValue(':username', $_POST['username']);
$query->bindValue(':password', $_POST['password']);
$query->bindValue(':password', $password);
$query->bindValue(':salt', $salt);
$query->bindValue(':type', $_POST['type']);
$query->bindValue(':boards', implode(',', $boards));
$query->execute() or error(db_error($query));