A simple Go library for generating and validating signed license keys with arbitrary data.
lk is a lightweight licensing library for Go that enables software publishers to generate cryptographically signed license files containing custom data like user emails and expiration dates. It provides a straightforward way to distribute and validate licenses without complex infrastructure, using ECDSA signatures for security.
Go developers building commercial software who need a simple, self-contained method for license key generation and validation without relying on external services.
Developers choose lk for its minimal API and ease of integration, offering a no-fuss solution for basic licensing needs with support for arbitrary structured data and multiple encoding formats for distribution.
Simple licensing library for golang.
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Uses ECDSA P384 for tamper-resistant signing, ensuring license integrity as highlighted in the README's security focus.
Supports arbitrary structured data like JSON or gob, allowing custom fields such as user emails and expiration dates, demonstrated in the examples.
Licenses can be marshalled to base32, base64, or hex strings, simplifying delivery to end users without complex infrastructure.
Provides a straightforward API with clear code examples for generating and validating licenses, reducing integration overhead.
Explicitly admits it cannot prevent hacking of the software binary, limiting effectiveness in high-security environments where reverse engineering is a risk.
Lacks built-in support for online validation, revocation, or dynamic license updates, requiring manual redistribution for any changes.
Tied to the Go ecosystem, making it unsuitable for projects using other languages or needing cross-platform validation without additional wrappers.