如何在PHP中验证JWT签名?

时间:2018-07-04 21:19:00

标签: php jwt slim

我有一个生成JWT的函数:

function getToken($user, $expTime){
   $jwt = \Firebase\JWT\JWT::encode([
     'iss' => request()->getBaseUrl(),
     'sub' => "{$user['id']}",
     'exp' => $expTime,
     'iat' => time(),
     'nbf' => time(),
     'is_admin' => $user['role_id'] == 1

  ], getenv("SECRET_KEY"), 'HS256');
 return $jwt;
}

此函数返回以下令牌:

eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpc3MiOiJcL2FwaSIsInN1YiI6InVzNWIzY2M4YmRlMDc4MSIsImV4cCI6NTUxMDY1ODkyNDAwMCwiaWF0IjoxNTMwNzM4NTkwLCJuYmYiOjE1MzA3Mzg1OTAsImlzX2FkbWluIjpmYWxzZX0.3bMaxCaMprURZEDurnckZWSoDRp7ePMxZXDW0B6q6fk

当我使用此令牌发出请求时,我得到了:

{
  "status": "error",
  "message": "Signature verification failed"
}

要使其正常工作,我转到https://jwt.io/,添加密钥并通过传递密码进行验证。

然后我得到此令牌:

eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpc3MiOiIvYXBpIiwic3ViIjoidXM1YjNjYzhiZGUwNzgxIiwiZXhwIjo1NTEwNjU4OTI0MDAwLCJpYXQiOjE1MzA3Mzg1OTAsIm5iZiI6MTUzMDczODU5MCwiaXNfYWRtaW4iOmZhbHNlfQ.heF_L9LrFp7Hht2dbVtOMx_gdUtmPKzrMgxW1_jdWLo

这很好用。但是如何使用php代码进行验证,以便我可以将其发送给用户?

响应代码:

 function loginUser($email, $password) {

try {
    // Connecting to databas
    $db = new db();
    $db = $db->connect();

    $user = findUserByEmail($email, $db);

    if(empty($user)){
        echo 'User not found';
        exit;
    }
    if(!password_verify($password, $user['password'])) {
        echo 'Password does not match';
        exit;
    } 

    $expTime = time() * 3600;

    $jwt = getToken($user, $expTime);

    // Close databse
    $db = null;

} catch(PDOException $e){
    echo $e->getMessage();
}

return $jwt;

}

2 个答案:

答案 0 :(得分:0)

好吧,最后我通过稍微更改生成令牌的函数来使其工作:

function getToken($user, $expTime){
    $key = "secretkey";
    $token = array(
      'iss' => request()->getBaseUrl(),
      'sub' => "{$user['id']}",
      'exp' => $expTime,
      'iat' => time(),
      'nbf' => time(),
      'is_admin' => $user['role_id'] == 1
  );
  return JWT::encode($token, $key);
}

答案 1 :(得分:0)

如果您是由于Google搜索“签名验证失败”而登陆此页面,则需要考虑的一件事。我收到此错误的原因是,在“授权人”标题中的“承载者”和我的令牌之间有两个空格。

错误:

Authorization:Bearer  eyJraWQiOiJDT2N...

正确:

Authorization:Bearer eyJraWQiOiJDT2N...