minimal_jwt

A lightweight library for encoding & decoding JSON Web Tokens (JWTs).

• Set the HMAC algorithm signing secret as the environment variable MINIMAL_JWT_SIGNATURE_SECRET. If environment variable is not set, an empty string would be used as the signing secret.
• Include the dependency by either adding gem 'minimal_jwt' in your Gemfile or run gem install minimal_jwt in your terminal in the directory of your codebase.
• Require the library by adding require 'minimal_jwt' wherever the library needs to be utilized.

Use

JWT.encode(payload: your_payload_json)

to encode your payload JSON

You can instantiate a JWT object with any token. There are methods exposed on the object, such as:

• valid? - tells you if the token is a well-formed JWT or not
• header - returns the header component of the JWT as a hash
• payload - returns the payload component of the JWT as a hash
• signature_verified? - tells you if the signature component of the token can be verified or not using the signing secret