JSON Web Tokens in Go

JWT (JSON Web Tokens) is an open standard for securely transmitting information between parties. The guide covers JWT structure (header, payload, signature), explains the difference between symmetric (HS256) and asymmetric (RS256) signing methods, and provides a complete Go implementation using the golang-jwt library and Echo framework. It demonstrates how to generate RSA keys, create a login endpoint that issues JWTs, implement middleware for token verification, and follows security best practices including using RS256 signing and HTTPS.