PHP security verification with Google Authenticator

PHP security verification through Google Authenticator

With the development of the Internet, user information security has received more and more attention. In order to protect the security of the user login process, two-factor authentication is often used. Google Authenticator is a widely used two-factor authentication tool that provides a secure and reliable way to verify your login. This article will introduce how to use PHP to implement secure verification of Google Authenticator.

First, you need to install the Google Authenticator extension pack. Open the terminal and use Composer to install the extension package:

composer require robthree/twofactorauth

After the installation is completed, we can implement the security verification of Google Authenticator through PHP code.

First, we need to generate a key and a QR code for users to scan. You can use the following code to generate:

require_once 'vendor/autoload.php';

use RobThreeAuthTwoFactorAuth;
$auth = new TwoFactorAuth("Your App Name", 6, 30);  // 创建一个 TwoFactorAuth 实例，设置应用名称、认证码长度以及每个认证码的有效时间

$secretKey = $auth->createSecret();  // 生成一个随机的密钥
$qrCodeUrl = $auth->getQRCodeImageAsDataUri("User Name", $secretKey);  // 生成一个供用户扫描的二维码，其中包含用户名和密钥

echo "密钥：$secretKey<br/>";
echo "<img src='$qrCodeUrl' alt='二维码'/>";  // 显示二维码供用户扫描

Run the above code and you will get a randomly generated key and a QR code.

Next, we need to verify whether the authentication code entered by the user is correct. You can use the following code to verify:

require_once 'vendor/autoload.php';

use RobThreeAuthTwoFactorAuth;
$auth = new TwoFactorAuth("Your App Name", 6, 30);  // 创建一个 TwoFactorAuth 实例，设置应用名称、认证码长度以及每个认证码的有效时间

$secretKey = "用户的密钥";  // 用户输入的密钥

if ($auth->verifyCode($secretKey, "用户输入的验证码")) {  // 验证用户输入的验证码是否正确
    echo "验证通过";
} else {
    echo "验证失败";
}

Run the above code and different prompt messages will be output according to the verification results.

Through the above code example, we can use Google Authenticator to implement PHP's security verification function. During the login process, users need to scan the QR code and enter the dynamic verification code to complete identity authentication. This two-factor authentication method can greatly increase the security of the login process and effectively prevent malicious attacks.

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