level5

This repository exhibits the basic concept of middleware, in the context of Go-based HTTP Server.

Utilities

This also holds utilities on dealing with JWT.

1. rsagen
2. jwtgen
3. jwtval

rsagen

It generates RSA keypair (private.pem and public.pem).

go run cmd/rsagen/main.go

jwtgen

It generates a JWT (token.jwt) file, that can be generated using symmetric (HS256) or assymmetric (RS256) key.

See: https://auth0.com/blog/rs256-vs-hs256-whats-the-difference/.

To run with symmetric key, you need to specify the key.

go run cmd/jwtgen/main.go --symmetric --key supersecret

However, this program is by default generating RS256 token.

Note

Please make sure to generate RSA keypair first.

go run cmd/jwtgen/main.go

jwtval

It validates the generated token.jwt using the defined key strategy (symmetric/asymmetric).

go run cmd/jwtgen/main.go --symmetric --key supersecret

And if the token.jwt was generated using RSHA256.

go run cmd/jwtgen/main.go