Frequently Asked Questions (FAQ)

Answers about how Kehai JWT works in your browser.

What is a JWT?

A JWT (JSON Web Token) is an open standard for securely transmitting information between parties as a JSON object.

How does signature verification work?

The signature is created using the algorithm specified in the header (such as HS256) with a secret key. To verify, we recalculate the signature and compare it with the one in the token.

Are my tokens sent to the server?

No, absolutely not. All operations (decoding, verification, signing) are performed entirely client-side in your browser. No data is transmitted to the server.

What algorithms are supported?

Currently, only HS256 (HMAC with SHA-256) is supported. Other algorithms may be added in future versions.

Can I use this application for production tokens?

This application is designed for development and debugging. Although everything remains local, we recommend not using sensitive production tokens.