I have two authorization server application ( spring boot 2.0.5 ).
The two authorization server application are similaire
When a user ask for a token, spring will register a session for that specific user and give back a token, with that token you can access to the resource of application 1 but you can't access to the resource of application 2.
My question is if there is a way to share the same security context in addion when you generate token from application 1 you can use to access of application 2 resource
What you can do is to make your applications stateless when it comes to security.
What does it mean?
Spring Security will no longer generate a session for a new logged in user. When the user logs in, you will issue him a token (e.g. JWT). Each time when the user accesses secured content, he/she will have to provide a token and your applications will verify that token with a public or private key (depending on which type of token encryption you will use - symmetric or asymmetric). In the end, you will not need to share anything, if both of your applications have same keys to verify incoming tokens.
Some tips:
A token you send upon each request to access secured resources is called "access token". Make it expirable and make it short lived (like 15 mins). Why? This token cannot be immediately invalidated unlike session which can be simply deleted. In case if someone hijacks it, it will be still able to access secured resources.
Since your "access token" is short lived, it would be annoying for a user to logs in every 15 minutes. To prolong its life, you can have another type of token called "refresh token" that can be stored in some database. This token can be immediately invalidated by simply deleting it from the database. Therefore, if someone even hijacks it, user will be able to revoke it and the hijacker will not be able to prolong his session.
References: Stateless authentication with JWT
We are also facing similar problem.
For web pages we are using SSO which cache token in clientContext and using Authorization-server-1
For making call to API-1 we are using token generated by Authorization-server-2. In this case we have create another session bean for clientContext and that is caching token (having its own oauth2RestTemplate and clientCredientialResource)
This is two legged scenario
We doing research, how to use three legged scenario for calling web/rest service, but we were not able to do so, as access token retrieval is two step process (using authorization code) and call back will execute the whole method again and not continue from line after call to rest api
Related
I have implemented a spring boot application which does authentication and authorization using Spring OAuth2.
I am using JDBC token store to main the token issued to the client for performing Custom claim verification and some other user status verification during application run-time.
The question is, since i had used traditional JSESSIONID with CSRF token, i cannot find any advantage with the new OAuth standards because after login i would store the user details in the session and retrieve it whenever needed similarly for OAuth i store the User details in the JWT token itself and decode the token every time to get the user information, also i need to hit the database anyway for custom claim verification such as JTI verification .
Everyone says JWT is for stateless application but with JDBC token store i'm holding all the token that is issued to each client. Also there is an additional overhead to purge the expired token which will be done automatically with Session. Also i'm using refresh token as the way to implement session timeout.
Therefore can anyone explain me, when should i use JSESSIONID and when to use JWT ? My application is running on AWS architecture.
From my experience, cookie-based authentication sufficiently complicates scaling and load-balancing. If you have authenticated via the first service replica, your cookie will be not appliable to another replica, cause all sessions are stored in memory. So, if you want to scale your service in the future, session-based authentication can make things much more complex.
Iam new to spring security and i was going through spring boot jwt and the process but i dont know how to use logout feature through jwt .
For example when a user click logout at after that time using that token we can not access the secured Rest end points.
Now i want is implementation of logout functionality using JWT(Spring Boot Rest Api)that is used in real time projects and the code for it.
Please if any one can provide me the github link to the solution
or can send me the code at
ag.rajat113#gmail.com
and anything related to latest spring security projects real time (Backend)
and also of oAuth2 material please send me i need this
Thanks.
On logout, you can perform the following actions
Remove the token from the client
You can remove the token from Client (Local storage, Session/Cookie). Note that it will not prevent the client access as you removing from only client side and for server, it is still valid Token
Maintain Token blacklist
When a client performs logout action. Add that token to blacklist and for next request check token is in a blacklist. If yes then prevent the access. As you have to check for every request it will be costly for large applications
Short expiry time
If you keep the token expiry times at short enough intervals and have the running client keep track and request updates when necessary, It will be working as a complete logout system. The problem with this method is that it makes it impossible to keep the user logged in between closes of the client code (depending on how long you make the expiry interval).
You can also refer this for Details
I was getting started with Spring Boot and Angular 7 and I came across user authentication.
Let's assume the following: I have a frontend with Angular 7 and a Backend with Spring Boot that offers API's that can be accessed via HTTP.
So I know that usually the frontend authenticates the user with e.g. JWT that stores all necessary information about the user that might be needed. But I came across the SecurityContextHoler of Spring Boot Security:
Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
This allows me to simply access granted Authorities and so on. So I thought about the following:
Using JWT for the frontend grants the following advantages (as far as I know):
* Users can identify when using API's
* Users may be prevented from certain UI-Elements (based on roles stored in JWT)
* Modification prevention due to checksum (invalid token afterwards)
Now I could also add a check in my Controller in the Backend that checks the SecurityContextHolder for user permission (something like a Service that checks the current context permissions vs the needed permission and returns true/false). Wouldn't that be even more save, since it is in the backend (so in my inmagination everything that runs server-sided is always a little more save than what runs client-sided)?
I can store information in the frontend (like roles and a username) to use them for the UI-based-access prevention to still have the same advantages as JWT provides, but I do not have the "effort" of implementing the JWT creation.
But obviously it is not common to do it that way (at least I never saw it), so what is the advantage of the Tokenization?
They are not mutually exclusive. You would use what you call "Tokenized Authentication", like an oAuth2 Bearer token most likely in a JWT when the Authentication is performed by a separate system from your Spring Boot backend. For example, you may be using Okta, Keycloak, Google or Facebook to authenticate the user.
At a minimum, your Spring Boot backend stores the username extracted from the JWT in the Authentication. You can get Spring Boot to extract any roles in the token and add those to Authentication::grantedAuthorites. If your backend system, has it's own set of roles in addition to what's in the token, then the backend could implement a PrincipalExtractor to load a UserDetails object for this user from the database as the Principal and merge the roles in the token with those store in the local database.
You'll probably want to security certain methods in your backend with method security annotations like #PreAuthorize(), since you shouldn't trust the front end. The method security will check permissions, like hasRole("ADMIN") or hasPermission(object, 'READ') using the Principal object in SecurityContextHolder.getContext().getAuthentication();
In the end, the token assures the backend the user accessing it is who they say they are, i.e. Authentication, but does not necessarily tell the backend what they are Authorized to do. Yes, if you control the Authentication server you can include roles in the JWT, but roles don't usually provide as fine a grained control as is required.
Independent of what level of security you implement, the token is translated into an Authorization so you can use the Spring Security framework to manage access within your backend code.
There are 3 type of token in spring security OAuth2:
1. InMemory token Store
2.JWT token store
3.JDBC token store
So now you’re talking the JWT token store. The most powerful of JWT token store is prevent the authorization server load against to the database for checking such as role,token expired so it is related database load performance. Since all the information such as: role,username, token expire ,etc include in token itself. So the authorization server or other resource sever may using the public key to verify this token itself without invoke to data store.
Hope helpful! ☺️
So I currently have this POC that I'm tinkering right now. I was thinking if it was possible that I can implement a Spring oAuth2 with JWT with a Authorization Server and a Resource Server both in different projects?
Flow goes like this User gets a token or passes through the Authorization Server and as long as he has the token and it's not expired he can make requests on the resource server.
I think that is the usual way to implement that. You have one authorization service providing tokens, either itself is backed by a database containing user information or maybe is asking another user service if the credentials are valid. The returned tokens can be used to make authorized request against the resource service(s).
Maybe take a look at the grant flow here.
I have been following a tutorial to create a Spring SSO application which uses Facebook for authentication but creates its own access tokens to secure back-end resources.
The sample application creates a user on first login and stores the user's facebook token for further use (getting data from facebook later on).
My question is that how do I handle token expirations? When the facebook token expires, how do we setup spring security to refresh it? What about our application's token expiration?
You can find my sample project here.
The app in the tutorial only uses the token for authentication (i.e. it uses it once when the user logs in to get the user's personal details), so it's highly unlikely to expire in the time it is being used. Having said that, the OAuth2RestOperations instance that is used to carry out that single request is capable of refreshing the token on its own (if the provider sent it a refresh token and allows the access token to be refreshed by your client).