Question 1

How to parse a JWT from an HTTP request using lestrrat-go/jwx?

Accepted Answer

Use jwt.ParseRequest with the HTTP request object and a key for verification. The library handles the Authorization header automatically, as shown in the synopsis example with jwt.ParseRequest(req, jwt.WithKey(...)).

Question 2

What's the difference between lestrrat-go/jwx and golang-jwt/jwt?

Accepted Answer

lestrrat-go/jwx provides full JOSE coverage including JWE, JWK, and JWS beyond just JWT, with a uniform API. In contrast, golang-jwt/jwt focuses primarily on JWT with a simpler interface, making it better for basic token handling without encryption needs.

Question 3

How to set up automatic key refresh with jwk.Cache?

Accepted Answer

Create a jwk.Cache instance with a remote JWKS URL and a refresh interval. The cache automatically fetches and updates keys, ensuring your application always has current keys for verification without manual intervention.

Question 4

Does lestrrat-go/jwx support JWE encryption for sensitive data?

Accepted Answer

Yes, it fully implements JWE for encrypting and decrypting arbitrary payloads using algorithms like RSA-OAEP, as demonstrated in the synopsis with jwe.Encrypt and jwe.Decrypt functions.

Question 5

How to handle custom JWT claims without defining new structs?

Accepted Answer

The library allows parsing and writing custom claims transparently using getter and setter methods, avoiding the need for alternate struct definitions, which is a key advantage mentioned in the README.

Question 6

Is lestrrat-go/jwx suitable for high-performance microservices?

Accepted Answer

While feature-rich, its comprehensive nature may introduce overhead compared to minimalist libraries. For microservices with strict latency requirements, benchmark against simpler options to ensure performance meets needs.

jwx

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