Yubico IPR

Yubico proprietary hardware

Yubico hardware inventions, the YubiKey and YubiHSM, are Yubico proprietary technology, protected by several patent applications in leading markets.
 

Yubico free and open source software

Free and open source software (FOSS) is essential to Yubico and Yubico use FOSS in several and different ways. When extending existing FOSS packages, Yubico's policy is to use each project's prefered licensing, in order to work smoothly with the upstream project and to avoid licensing proliferation.

For software that is written natively by Yubico and provided to customers and third parties, our preference is to use the 2-clause BSD license. The 2-clause BSD license is probably the FOSS license that is the most compatible with respect to other software licenses (be it proprietary or FOSS). The 2-clause BSD license permits including our code into proprietary code without any requirements for source code releases. For example, all our low-level C libraries are released under the 2-clause BSD license because they do not rely on any other external component.

Our PAM module is released under the same license as Linux-PAM, i.e. dual-BSD/GPL, in order to blend smothly with the PAM community. These are our general preferences and there may be exceptions, but the complete licensing details are always part of each project.

We are committed to be a good FOSS citizen around licensing choice, so if you have any questions please ask us.