Protect your API

Validate the API request's authorization token​

Auth issues a standard JWT format authorization token for each authorized API request. The token is encrypted and signed as a JWS token.

Understanding JWS token​

An encoded JWS token is constructed with three parts:

• JOSE Header: Declares the code type and encoding algorithm

• JWS Payload: Includes all the token's claims

• JWS Signature: Signature signed with JWK

A standard schema of auth issued JWS Payload: (claims may vary, based on your custom OIDC config)

Key	Description
jti	unique JWT ID
sub	subject, usually user-id
iat	timestamp token issues at
exp	timestamp token expires at
client_id	client id
iss	token issuer identity
aud	audience of the token

INFO

For development, to visually inspect a JWT token, you could visit jwt.io to decode and check the tokens you received. Be careful with or never use the tokens from a production environment. As this is a third party provided public online service, your token may be exposed.

Validate the authorization token​

1. Validating a JWT.

2. Validating the JWS signature.

3. The token's issuer is https://<your-auth-domain> (issued by your Auth server).

4. The token is within its expiration time.

There are various open-source libraries and packages that can help you to validate and decode a JWT token easily. You may pick one and integrate with your backend application based on the language and framework you are using. Please check some of the examples we have:

• Node(Express)

• Spring Boot

• Python

Reference

Auth uses the code-based OAuth 2.0 Authorization Protocol to make your API request safer. If you are interested in the strategy behind it, refer to OAuth 2.0's official document for more details.