Question 1

How secure is lk for commercial software?

Accepted Answer

lk uses ECDSA P384 signatures for cryptographic security, making licenses tamper-resistant. However, it doesn't protect against reverse engineering of your application, so it's best for basic validation where the software itself isn't heavily targeted.

Question 2

Can lk handle license expiration automatically?

Accepted Answer

You embed expiration dates in the license data, and during validation, check if the current time is before the end date. The README shows examples using Go's time.Time struct, but automatic renewal isn't built-in.

Question 3

What if my private key gets leaked?

Accepted Answer

If compromised, anyone can generate valid licenses. You must update your software with a new public key and redistribute licenses, which can be disruptive for deployed applications.

Question 4

lk vs other Go licensing libraries like go-license?

Accepted Answer

lk focuses on simplicity and offline signing with ECDSA, while others might offer more features like online validation or GUI tools. lk is ideal for minimal setups without external dependencies, but less feature-rich.

Question 5

How to integrate lk with a Go web application?

Accepted Answer

Hardcode the public key in your server code, load license strings from config or databases, and validate on startup or per-request using the Verify method. Embed user data like roles in the license for access control.

Question 6

Is lk good for mobile or desktop apps?

Accepted Answer

Yes, for offline validation in Go-based desktop apps, but for mobile or cross-platform apps, you'd need to port the logic or use it server-side, as lk is Go-specific.

lk

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