[xaduha]

You mention that SmartCard-HSM/Nitrokey HSM are open source, which to me seems a bit disingenuous, since the most important part, the applet itself, is closed source AFAIK. You can't get the source that you can compile to a .cap file and upload it to your own blank java card.

I'm using this instead https://github.com/philipWendland/IsoApplet

[mdewinter]

I haven't looked into that yet, but it is on my list. Thanks for the link.