JWT authentication in Go with golang-jwt
Sign and verify JSON Web Tokens in Go using golang-jwt/jwt v5. Covers HS256 and RS256, typed claims, parser options for issuer and audience, JWKS with keyfunc, and net/http middleware.
JWT authentication in Java with JJWT and Spring Security
Sign and verify JSON Web Tokens in Java using JJWT 0.12. Covers HS256 and RS256, claim validation, key generation, a servlet filter, and how Spring Security's resource server handles JWKS for you.
JWT authentication in Node.js with jsonwebtoken and jose
Sign and verify JSON Web Tokens in Node.js. Covers the jsonwebtoken package, the modern jose library, RS256 with PEM keys, JWKS verification, an Express middleware, and the errors you will hit along the way.
JWT authentication in Python with PyJWT
Sign and verify JSON Web Tokens in Python using PyJWT. Covers HS256 and RS256, claim validation, JWKS with PyJWKClient, a FastAPI dependency, a Flask decorator, and the exceptions you need to catch.