I'm trying to learn spring boot for a project. I want to consume an api which requires auth token. How do I authenticate my token using spring boot? - spring

I am trying to develop a web application using SPRING-BOOT that requires me to consume an external API to authenticate the access token. How do I pass that token in my code?

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Spring boot - Token online verification

I'm developing an app.
Front/bff/api.
I'm using an open id provider that allows to check token remotely.
The bff intercepts the front requests and sends them to the API with the jwt token in the header.
The api should ask the open ip provider if the token is correct (but remotely, not using the offline mode with the public key ).
The api is a spring boot 3.0.1 project.
How to configure security in spring boot 3.0.1 to do that check?
Thank you in advance.
You do that with access-token introspection. In spring-security conf, that means using opaqueToken() instead of jwt() (the first configures a resource-server with introspection and the second with a JWT decoder).
Be aware that token introspection is far less efficient than using a JWT decoder as a request is sent to the authorization-server for each and every request to a resource-server. Tutorial there.

generate azure ad jwt token and call the thrid party api using those token using spring boot

I registered the app in an azure ad, and I have application id(client id) and directory id (tenant id), and secret key.
using this need to generate the jwt token in the azure ad and need to validate that token.
once the token generate need to call the third-party API's using that token in spring boot application.
please provide some example
To achieve the above requirement. You can take Reference of this Post to call the third-party Api using the JWT token using spring boot application.
In the above, there is tutorial they have built a Spring Boot Application that supports Token based Authentication with JWT. Please refer the section How to configure Spring Security to work with JWT that might be solution of requirement.

Adding authentication based on API key and API secret to APIs in Spring Boot application

I am working on a Spring Boot application where existing user authentication is based on Oauth2 with 2FA. Now, I would like to call the APIs in my application from the third-party client as well, say from another service.
Basically, I would like to develop one auth API, where on providing a valid client name, valid API key, and API secret, the client will get an auth token, which will be valid for say 1 hour. Then this auth token can be passed in all successive API invocation until the token gets expired.
I found a few articles here:
a. Securing Spring Boot API with API key and secret
b. How to secure spring Boot API with API key and secret
c. how to implement api key secure in spring boot?
d. How to config multiple level authentication for spring boot RESTful web service?
But, I am not getting any concrete idea regarding, how to achieve this.
Could you please suggest how can I achieve this? Thanks

Keycloak: Spring Boot project as bearer and reusing token from user

I am building an application with an angular frontend and spring boot on the backend. I was able to configure the angular and spring part.
So, the frontend requests a token and sends it with every request to the java backend. This works just fine.
My java backend is now in the need to reuse the client token to request data from another service, which uses the same mechanism.
What is the right way to go forward? Requesting an own token for my service or using the existing token from the authenticated user?
I have not found a way to do this.
Works as pointed out by ravthiru
While calling your 3rd service you can use the same token , Add your third service as bearer-only Client.

Using Swagger with Spring Boot and JWT

I run my app with Spring Boot using JWT token for authentication. I have a filter checks a token. Also my app provide rest API documentation with Swagger 2. I don't want my rest api will be public
So my question is, how i can provide a security for Swagger access? and can provide basic security for it?

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