License

Intro

These public keys are used to decrypt JWT license.

Create license

We can use openssl to generate RSA key

bash

# Create private key
openssl genrsa -out private.pem 2048

# Use private key to generate public key
openssl rsa -in private.pem -outform PEM -pubout -out public.pem

Usage

Load keys in config

The enterprise/config/config.go will load keys depends on environment.

Decrypt

In enterprise/service/license.go, we will use public key to parse JWT

token, err := jwt.Parse(tokenString, func(token *jwt.Token) (any, error) {
    if _, ok := token.Method.(*jwt.SigningMethodRSA); !ok {
        return nil, errors.Errorf("unexpected signing method: %v", token.Header["alg"])
    }

    key, err := jwt.ParseRSAPublicKeyFromPEM([]byte(env.Conf.LicensePubKey))
    if err != nil {
        return nil, err
    }

    return key
}