Question 1

How to create and sign a JWT with golang-jwt/jwt?

Accepted Answer

Use jwt.NewWithClaims with a signing method like jwt.SigningMethodHS256, then call the Sign method with your secret key. Examples are provided in the pkg.go.dev documentation for building and signing tokens.

Question 2

golang-jwt/jwt vs the original dgrijalva/jwt-go: which should I use?

Accepted Answer

golang-jwt/jwt is the actively maintained fork with security updates and new features like v5 improvements, while the original is no longer maintained. Migrate using the MIGRATION_GUIDE.md for a smoother transition.

Question 3

Is golang-jwt/jwt safe for production use?

Accepted Answer

Yes, it's production-ready with robust security defaults, RFC 7519 compliance, and regular updates. However, always validate the alg field and follow security notices to prevent vulnerabilities.

Question 4

How to handle token expiration with golang-jwt/jwt?

Accepted Answer

Use jwt.RegisteredClaims with the ExpiresAt field and validate it during parsing with jwt.Parse and custom validation functions. Detailed examples are in the documentation for claim handling.

Question 5

Can I integrate Google Cloud KMS with golang-jwt/jwt?

Accepted Answer

Yes, through third-party extensions like someone1/gcp-jwt-go, but these are community-maintained and might require additional setup or have varying support levels.

Question 6

What are the breaking changes in v5 of golang-jwt/jwt?

Accepted Answer

v5 introduced major improvements to token validation, such as enhanced claim handling, but includes breaking changes. Check VERSION_HISTORY.md and MIGRATION_GUIDE.md for specific updates and migration steps.

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