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Check a license

A Kwker license is a text file with a signature file next to it. Anyone can check that Kwker issued it and that nobody changed it, without contacting us.

Kwker's license-signing key

The license-signing key is published here when licenses go on sale, with the 0.1.0 release.

Check it with gpg

Download the key once and import it:

gpg --import licenses.asc
gpg --fingerprint licenses@kwker.io

The fingerprint gpg prints must be the one on this page. Then check a license:

gpg --verify kwker-license-KWK-XXXX-XXXX-XXXX-XXXX.txt.asc kwker-license-KWK-XXXX-XXXX-XXXX-XXXX.txt

A genuine license gives Good signature from "Kwker licenses <licenses@kwker.io>" and the primary key fingerprint from this page. Any change to the license file, even one character, gives BAD signature. gpg also warns that the key is not certified with a trusted signature: that is normal, and is why you compare the fingerprint yourself.

The license file names the company, its revenue band and the dates it is valid. It is valid from the first day to the last day it lists, both included.

Check it with kwker-license

Kwker's own checker, kwker-license verify, ships with the 0.1.0 release. It runs the same checks with the key built in and also reads the license for you: who it is for, and whether it is valid today.

kwker-license verify kwker-license-KWK-XXXX-XXXX-XXXX-XXXX.txt

Buying and downloading licenses

Licenses are bought and downloaded from your account. See pricing for who needs one.