用于登录密码的PHP salt和hash SHA256

Question

我已经在我的注册脚本中加密了密码,它们存储在数据库中,我必须使用它们登录,所以我想使用未加密的登录.我在这里读过一些帖子,但没有什么能帮到我.如何在login.php中添加它？盐也存储在数据库中.

这是我的register.php加密脚本

$hash = hash('sha256', $password1);

function createSalt()
{
    $text = md5(uniqid(rand(), TRUE));
    return substr($text, 0, 3);
}

$salt = createSalt();
$password = hash('sha256', $salt . $hash);

这是我的login.php与季节

//Create query
$qry="SELECT * FROM member WHERE username='$username' AND password='$password'";
$result=mysql_query($qry);

//Check whether the query was successful or not
if($result) {
    if(mysql_num_rows($result) > 0) {
        //Login Successful
        session_regenerate_id();
        $member = mysql_fetch_assoc($result);
        $_SESSION['SESS_MEMBER_ID'] = $member['id'];
        $_SESSION['SESS_FIRST_NAME'] = $member['username'];
        $_SESSION['SESS_LAST_NAME'] = $member['password'];
        session_write_close();
        header("location: profile.php");
        exit();
    }
    else {
        //Login failed
        //error message 
    }
else {
    die("Query failed");
}

Answer 1

这些例子来自php.net.多亏了你,我也刚刚了解了新的php散列函数.

阅读php文档,了解可能性和最佳实践:http: //www.php.net/manual/en/function.password-hash.php

保存密码哈希:

$options = [
    'cost' => 11,
];
// Get the password from post
$passwordFromPost = $_POST['password'];

$hash = password_hash($passwordFromPost, PASSWORD_BCRYPT, $options);

// Now insert it (with login or whatever) into your database, use mysqli or pdo!

获取密码哈希:

// Get the password from the database and compare it to a variable (for example post)
$passwordFromPost = $_POST['password'];
$hashedPasswordFromDB = ...;

if (password_verify($passwordFromPost, $hashedPasswordFromDB)) {
    echo 'Password is valid!';
} else {
    echo 'Invalid password.';
}