Kotlin Web Dev

Examples

Kotlin Authentication API

Building an Authentication API

Kotlin authentication API uses JWT for secure endpoints.

Introduction to JWT in Kotlin

JSON Web Tokens (JWT) provide a compact and self-contained way to transmit information securely between parties as a JSON object. This information can be verified and trusted because it is digitally signed. In this guide, we'll explore implementing JWT in a Kotlin-based API to secure our endpoints.

Setting Up Dependencies

To get started with JWT in Kotlin, you'll need to add the necessary dependencies to your project. We will use the kotlin-jwt library, which provides a straightforward way to handle JWTs in Kotlin.

Creating a JWT Token

Generating a JWT token is an essential step in the authentication process. You'll typically create a token when a user logs in successfully. Below is a simple example of how to create a JWT token in Kotlin:

Validating a JWT Token

Once a token has been issued, it needs to be validated on each request to a secured endpoint. Here's how you can validate a JWT token in Kotlin:

Securing Endpoints with JWT

With our JWT token creation and validation functions in place, we can now proceed to secure our API endpoints. Below is an example of how you might secure a RESTful endpoint in a Kotlin application:

Conclusion

Implementing JWT for authentication in a Kotlin API enhances security by ensuring that only authorized users can access certain endpoints. By following the steps outlined in this guide, you can efficiently create and validate JWTs, making your application more secure.

Examples

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