Credits

This package used github.com/dgrijalva/jwt-go underhood and it heavily based on this post: http://www.inanzzz.com/index.php/post/kdl9/creating-and-validating-a-jwt-rsa-token-in-golang

Create key-pair

From http://www.inanzzz.com/index.php/post/kdl9/creating-and-validating-a-jwt-rsa-token-in-golang:

openssl genrsa -out private_key.pem 4096
openssl rsa -in private_key.pem -pubout -out public_key.pem