Episode Details

This story was originally published on HackerNoon at: https://hackernoon.com/how-to-load-and-run-a-java-card-applet-on-real-hardware.
Build a Java Card applet on real hardware. Working commands, a complete device-key demo, and the client bugs we mistook for a locked card.
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Three cards, two operating systems, and a hand-rolled SCP02 stack. We build, load, and run a Java Card applet, then follow its device key through personalization, authentication, rotation, and revocation. Along the way, two apparent hardware failures turn out to be bugs in our own tools.