I am using spring security Oauth2 Jwt token for authentication of rest service. I want to decrypt bearer token and check the user details before Spring Security Oauth verifies it.
Can any one help me how to do?
Thanks
Related
Implementing SSO in my application and from app-1 i need to make a rest call to app-2. Login in app-1 with SAML and authenticated successfully and trying for rest call from app-1 with openid but since authentication is using saml only so not able to get the access/bearer token. Please help how to get the access/bearer token from saml request/response. I'm using Keycloak Server for SSO implementation.
You can't.
REST API need a JWT token not a SAML one.
Change SAML to OpenID Connect and it will work.
(1) OpenID Connect 1.0 is a simple identity layer on top of the OAuth 2.0 protocol. It allows Clients to verify the identity of the End-User based on the authentication performed by an Authorization Server, as well as to obtain basic profile information about the End-User in an interoperable and REST-like manner.
(2) Presently there is no IETF draft document regarding SAML 2.0 Profile for OpenID Connect client.
We can refer to the IETF draft document SAML 2.0 Profile for OAuth 2.0 client.
The OAuth 2.0 Access Token using SAML Assertion filter enables an OAuth client to request an access token using a SAML assertion. This supports the OAuth 2.0 SAML flow, which is used when a client wishes to utilize an existing trust relationship, expressed through the semantics of the SAML assertion, without a direct user approval step at the authorization server. For more details on supported OAuth flows, see API Gateway OAuth 2.0 authentication flows.
(3) Both Auth0 and open-source WSO2 Identity Server implement the SAML profile for OpenID Connect/OAuth to convert SAML token to OpenID Connect/OAuth token, as demonstrated by Auth0 SAML Configuration and WSO2 Adding and Configuring an Identity Provider. In other words, Auth0 and WSO2 Identity Server can relay SAML authentication provided by SAML IdP to either OpenID Connect client or OAuth 2.0 client.
I have done a sample application using Sprint Boot, Spring security and JWT and define my custom authentication & authorization filters. While performing basic authentication (passing username & password) I get JWT token in the format of xxxx.yyyy.zzzz where xxxx is header, yyyy is payload and zzzz is signature and each part is encoded using Base64URL encoder. What I do not understand is how JWT is different from OAuth 2.0. In OAuth 2.0, we can pass 2 types of grant_types as either 'username' or 'client credentials' & also needs to pass client id, secret id to get access & refresh tokens.
Please assist to clarify my following doubts:-
1) Is JWT lighter than OAuth 2.0 as it does not contain the refresh token but just access token?
2) Is JWT cannot be used to make a standalone authorization server like we can make a standalone authorization server using #EnableAuthorizationServer annotation when it comes to OAuth 2.0. Is my assumption correct?
3) JWT does not accept client id/secret client but just used as basic authentication to get bearer tokens?
4) Is the format of access token (or bearer) for both OAuth2.0 and JWT are different?
I have seen an example where both OAuth 2.0 and JWT were used. OAuth 2.0 was to make authorization server which returns JWT token only in the end but did not understand why JWT was used if OAuth2.0 can return a token by itself.
Thank you
JWT is a JSON-based token defined in RFC 7519. OAuth 2.0 is an authorization framework defined in RFC 6749. Comparing both is like asking "How Glucose is different from Apple Pie?".
However, it is possible to bring OAuth 2.0 and JWTs together as is defined in RFC 7523 – The JSON Web Token (JWT) Profile for OAuth 2.0 Client Authentication and Authorization Grants. It standardizes, how to use JWTs as bearer tokens within the OAuth 2.0 framework, which enables what I call stateless authentication.
Regarding your questions:
Whether or not you use JWTs as bearer tokens does not influence whether or not you want to hand out refresh tokens.
Not sure whether I get your questions. However, using JWT allows you to do decentral, stateless auth decisions as there is no necessity to store token state centrally. However, nobody prevents you from having a standalone authorization server.
How you want to do authentication has nothing to do with JWT. It is still OAuth 2.0.
In OAuth 2.0 bearer tokens are considered to be opaque tokens – the format does not matter. If you use JWTs as bearer tokens, you need to follow the corresponding RFC.
I want to know what the best scenarios for using OAuth 2.0 JWT Bearer Token Flow.
I found some info about thit OAUTH 2 flow here.
The OAuth 2.0 JWT bearer token flow is similar to a refresh token flow within OAuth. The JWT is posted to the OAuth token endpoint, which in turn processes the JWT and issues an access_token based on prior approval of the app.
I have questions.
Does WSO2 support something similar to:
https://docs.wso2.com/display/AM190/Exchanging+SAML2+Bearer+Tokens+with+OAuth2+-+SAML+Extension+Grant+Type
using JWT instead of SAML?
Is it possible to achieve it using Facebook/Google as Federated identity provider?
And another one:
Can we use JWT token instead of OAuth2 Access Token in WSO2 Api Manager to authorize incoming requests?
Thanks
Does WSO2 support something similar to:
https://docs.wso2.com/display/AM190/Exchanging+SAML2+Bearer+Tokens+with+OAuth2+-+SAML+Extension+Grant+Type
using JWT instead of SAML?
Yes, it does. We have the JWT Bearer Grant implementation for this. The idea behind JWT Grant is that a signed JWT valid according to [1] issued by a trusted IDP can be exchanged for an access_token. Follow [2] to try out the JWT Bearer Grant.
Facebook and Google do issue JWTs in the form of id_token. But there's a problem with using those id_token as a JWT Bearer Grant at the moment. According to the spec[1], the JWT Bearer Grant must contain some value in the 'aud' claim to let the entity that validates the bearer grant that it was intended to them. At present we cannot do this with any OpenID Connect provider ie. there is no standard way to request a OIDC provider to give us a token that we can use at 'X' identity provider.
Can we use JWT token instead of OAuth2 Access Token in WSO2 Api
Manager to authorize incoming requests?
AFAIK, this is not possible out of the box. One solution would be to use the JWT to get an access token using the JWT Bearer grant type. And then use the access_token APIM.
[1] https://datatracker.ietf.org/doc/html/draft-ietf-oauth-jwt-bearer-12#section-3
[2] https://docs.wso2.com/display/ISCONNECTORS/JWT+Grant+Type+for+OAuth2
Does oauth2RestTemplate or access token providers support validate token request?
Here is the flow:
Mobile/Web-App authenticated from third party Authentication server
and obtains Access-Token.
User tries to access a secured resources, and passed the Access-Token in the request, as expected by the protocol.
Is it possible to check this token against third-party server?
I found a bit similar here in the form of a refresh token.
Is validation request the part of the OAuth2 standard?
Thanks
No, OAuth2 doesn't enforce a specific token format or API for validating tokens. This is something that has to be decided independently between the resource server and the authorization server.
For example, the UAA project, which uses Spring Security OAuth2, uses signed JWT tokens, so the resource server can validate the contents without having to ask the authorization server directly. It also provides a /check_token endpoint, which will decode the token and verify that it has not expired.