These 3 are set to the default value JwtBearerDefaults. I used the TokenValidationParameters property to specify how the token will be validated on the server.
For this I set true for the Issuer and Audience. The most important property here is the IssuerSigningKey that is used to set the security key with SymmetricSecurityKey class. The security key is the Private key. Through this key the token is signed by the client. If the private key is in-correct then the token is faulty and so the request to the resource is not processed. Next, go to the Configure method and tell your app to use authentication and authorization.
You add the below 2 lines of code after the app. So create a new class called Reservation. Next, create a new controller called ReservationController. This controller will have the task to return reservations to the client whenever request to the API is made.
Explanation : I have marked this controller with [Authorize] attribute of the Microsoft. Authorization namespace. This means if the token is missing or faulty then web api methods will not be initiated. While for proper tokens the Web API will be authorized to the request.
Now request from the clients will be authenticated beforehand and only then the Web API will provide them with the reservation data. In technical terms — the Web API will authenticate the request from the clients and if these requests contain a correct JWT token then only the Web API will authorize the request to view the reservations. Let us perform some testing. Next, run your application on visual studio.
This time you will see Http Error which tells — you are unauthorized to access the reservation controller. We need to nstall the package called IdentityModel.
Check the screenshot from NuGet:. We are ready to create JWT Token but we also need a place to store this token. Normally websites store the token in a database or in a cookie. Here we will store the token in a JWT Cookie. This cookie is just a normal cookie which will be storing the JWT Token.
Whenever we need to call the web api, we will read this cookie to get the JWT Token and add this token on the authorization header of the request. Now you are ready to make API Calls. We will also need to install Newtonsoft. Now add Index action methods which will validate for the username and password.
Recall the JWT Token is created only when the user is successfully validated on the login screen. The code of this action method is given below:. You can replace this code with something that checks the username and password of the user from the database. Next See the lines 13 and On line 13 a function is called which will create a new JWT Token. So add these 2 functions on the controller.
Example: to set the expirty time of the token to be 3 hours after it is created, the C. NET code for this will be expires: DateTime. AddHours 3. I have shown this in highlighted way in the below code:. We can also use DateTime. AddMinutes to set expiry time minutes or DateTime. AddSeconds to set the time in seconds. Notice the JWT token expires after 3 hours and the cookie also expires in 3 hours. We will talk about the expiry time in just a moment.
This action method code is given below. So for HttpStatusCode. For the HttpStatusCode. This message will be displayed on the view. Entrust - A practical approach to data ethics Read More. Inspire InFocus Read More.
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